阅读说明：本技术 盖体、以及采用其的包装物和颗粒物料容器 (Cover body, packaging object adopting cover body and particle material container ) 是由 龚俊 罗美芬 项俊武 龚浩源 何炜彤 于 2020-05-22 设计创作，主要内容包括：本发明涉及包装制品领域,涉及一种盖体、以及采用其的包装物和颗粒物料容器,包括薄片状的本体,本体的外围设置有容器连接部,该容器连接部用于密封连接容器壁；容器连接部通过盖体连接部连接至阻挡片体,且该阻挡片体与容器连接部和盖体连接部一体成型,阻挡片体设置有连通本体上下的通孔,该通孔用于倾倒出颗粒物料。可以实现通过盖体就可以倒出颗粒物料,即可以采用该盖体的包装物,在去除密封结构后,可以直接拿包装物作为倾倒和保藏颗粒物料的容器,且通过盖体的阻挡片上的通孔的分布,用户容易控制倒出颗粒物料的量,从而极大的方便了用户,避免原有包装物中转移到其他专用的调料瓶中,同时免除了原有拆开密封的原包装物的保存问题。(The invention relates to the field of packaging products, in particular to a cover body, a packaging material adopting the cover body and a particle material container, which comprise a flaky body, wherein the periphery of the body is provided with a container connecting part, and the container connecting part is used for being hermetically connected with the wall of the container; the container connecting portion are connected to the blocking sheet body through the cover body connecting portion, the blocking sheet body is integrally formed with the container connecting portion and the cover body connecting portion, the blocking sheet body is provided with through holes which are arranged above and below the communicating body, and the through holes are used for dumping out particle materials. Can realize just can pouring out the granule material through the lid, can adopt the packing material of this lid, get rid of seal structure after, can directly take the packing material as empting and preserving the container of granule material, and through the distribution of the through-hole on the piece that blocks of lid, the volume of granule material is poured out in the easy control of user, thereby very big made things convenient for the user, avoid in the original packing material transfer to other dedicated condiment bottles, avoided the original problem of preserving of taking apart sealed former packing material simultaneously.)

1. The cover body for pouring out the granular materials is characterized by comprising a flaky body, wherein a container connecting part is arranged on the periphery of the body and used for being hermetically connected with the wall of a container; the container connecting portion are connected to the blocking sheet body through the cover body connecting portion, the blocking sheet body is integrally formed with the container connecting portion and the cover body connecting portion, the blocking sheet body is provided with a through hole which is communicated with the upper portion and the lower portion of the body, and the through hole is used for dumping out the particle materials.

2. The cover of claim 1, wherein the barrier sheet has a first mounting surface, the cover comprising a first membrane, and an adhesive layer is disposed between the first membrane and the first mounting surface;

when the first membrane is an aluminum alloy membrane, the adhesive layer correspondingly adopted by the first membrane is a hot melt adhesive layer, and the first membrane corresponding to the first mounting surface is hot-pressed to form sealing connection; or the first membrane is an aluminum alloy membrane, the adhesive layer adopted correspondingly is a cold melt adhesive layer, and the first membrane corresponding to the first mounting surface is coated with the adhesive layer and is in compression joint with the adhesive layer to form sealing connection;

or when the first membrane is an organic transparent membrane or an organic semi-transparent membrane, the correspondingly adopted adhesive layer is an epoxy resin adhesive layer serving as a main material, and the first membrane corresponding to the first mounting surface is hot-pressed to form sealing connection; or when the first membrane is an organic transparent membrane or an organic semi-transparent membrane, the adhesive layer correspondingly adopted is an epoxy resin adhesive layer serving as a main material, and the first membrane corresponding to the first mounting surface is in sealing connection through coating the epoxy resin adhesive layer and crimping.

3. A lid according to claim 2, wherein the through hole for pouring material has a diameter in the range of 0.2 to 45.5 mm; the one or more through holes are arranged near the edge of the cover body; the first mounting surface is arranged around the blocking sheet body, so that the periphery of at least one through hole is sealed by the hot melt adhesive layer and/or at least one through hole is positioned at the non-hot melt adhesive sealing position.

4. A cover according to claim 2, wherein a non-hot melt adhesive seal exists between said barrier sheet and said first membrane, wherein said first membrane is adjacent to said barrier sheet at said non-hot melt adhesive seal, and wherein an air layer exists therebetween, said air layer being in communication with said at least one through hole.

5. The cover according to claim 2, wherein the thickness of the first membrane is 0.01 to 0.09 mm, the thickness of the body at the barrier sheet is 0.1 to 0.5mm, and a plastic layer is formed on the side of the first membrane facing the barrier sheet, and the thickness of the plastic layer is 0.001 to 0.01 mm.

6. The cover body according to claim 2, wherein the whole blocking sheet surface between the blocking sheet body and the first membrane is thermally welded, so that the blocking sheet body is connected with the first membrane, the periphery of the through hole is sealed by a hot melt adhesive layer, and the first membrane is tightly connected with the blocking sheet body.

7. The cover according to claim 2, wherein the number of the through holes is plural, the plural through holes are uniformly arranged, and the pitch of the through holes is 1.3 times to 5 times larger than the radius of the through holes; and a large through hole is formed in the corresponding side of the through holes and used for extending into the spoon.

8. The cover of claim 2, wherein the first membrane is smooth and the through hole is punched from one side of the first membrane to the other side of the body; or the through hole is punched from the other side of the body to one side of the first membrane, and the first membrane is connected with the blocking body in a hot-melt compression joint mode.

9. The cover of claim 2, wherein the first membrane is a concave-convex surface, and the through hole is formed by punching from one side of the first membrane to the other side of the body; or the through hole is punched from the other side of the body to one side of the first membrane, the connection between the first membrane and the blocking piece is hot-melt compression joint, and the first membrane and the blocking piece which are subjected to hot-melt compression joint are subjected to embossing treatment through an embossing piece, wherein the male end face and the female end face of the embossing piece are concave-convex, punching concave points which are evenly spaced are formed on the lower surface of the first membrane, and after the concave-convex surface of the first membrane is extruded through the through hole, an arc-shaped indentation which is consistent with the shape of the through hole is formed and is presented on the upper surface of the first membrane.

10. The cover according to claim 8 or 9, wherein the first membrane is provided with a handle portion integrally connected with the first membrane, connected to an edge of the first membrane, and having a free end folded toward the first membrane to form a partial double-layer membrane structure; the structure is positioned at one side of the plurality of through holes, and when the handle part tears the first membrane, the through holes can be exposed; and at least one through hole is arranged under the double-layer film structure.

11. The closure of claim 10 wherein said closure is in a stacked configuration, a plurality of like closures being stacked one upon the other or side-to-side, said first membrane contacting said barrier panel of an adjacent closure, said double layer membrane contacting said barrier panel of an adjacent closure to partially separate said adjacent closures.

12. A package comprising a lid according to any one of claims 1 to 11 for pouring particulate material, a container wall sealingly connected to the container connection of the lid, the container wall and the lid defining a receiving cavity open at one side and a feed spout at the opening, the container wall surrounding the feed spout to define a spout connection for sealing connection.

13. A container for particulate material, comprising a package according to claim 12, and wherein the lid is adapted to be loaded with material from the opening when the lid is in a lower open-up position, the material being held by the barrier flaps; the feeding bottom opening connecting part is connected with the connecting structure of the bottom cover in a sealing manner.

14. A container for particulate material, comprising a container body having a material opening upwardly disposed and a lower portion sealed, through which material is poured, and a lid seal portion provided on the container body and sealingly connected to a container attachment portion of a lid body according to any one of claims 1 to 11 for pouring particulate material.

15. A container for particulate material, comprising a lid according to any one of claims 1 to 11 for pouring particulate material, and a container body having a sealing connection for sealing engagement with the container connection of the lid, wherein moisture-sensitive material is located in a sealed cavity defined between the lid and the container body.

Technical Field

The invention relates to a cover body, a packing material adopting the cover body and a particle material container, and belongs to the technical field of packing products.

Background

In the existing packaging material, a form of connecting an independent cover body with a wall surface of a packaging object is widely adopted to realize the sealing of the packaging object needing to be sealed. The cover body often exists as a simple single component, functions are very single in use, and the problem that under the condition of a scene with relatively complex contrast, each stage cannot be met is solved. In the real life, there is the particulate matter that easily wets, after detaching sealed lid, will appear great opening, be unfavorable for some at every turn only need a small amount, and the condition that needs take many times. In daily situations, for example, monosodium glutamate is often used as a sealing packaging material for monosodium glutamate, such as a large-package plastic sealing bag or a sealing cylinder, when the packaging materials are directly poured, the pouring amount cannot be controlled, and good dust shielding cannot be realized. In order to better adjust the pouring amount each time, the seasoning bottles are required to be subpackaged into other special seasoning bottles with a plurality of small holes, so that multiple transfer exists, and as seasoning bottle manufacturers and monosodium glutamate manufacturers belong to different production systems respectively and cannot be matched, the volume of the seasoning bottles is often far smaller than the volume of packaging materials of an original factory, once the original package is damaged, the rest of the seasoning bottles can be affected by humidity, pollution and the like due to the fact that the original package cannot be well sealed. The realization demand that can satisfy the production link is waited for to solve simultaneously, satisfies sealed storage requirement before the use, and in use can satisfy the user ration and empty the particulate matter, simultaneously, can temporarily seal or avoid the lid subassembly to multiple demands such as influence that use under the condition of needs.

Disclosure of Invention

The invention aims to solve the technical problem that the existing granular material packaging material and the actual use scene are not uniform, and discloses a cover body for pouring out granular materials, a package adopting the cover body and a sealed container. Can solve particulate matter producer's packing problem simultaneously to and adopt this packaging structure can directly adopt at user's use scene, thereby needn't use special condiment bottle.

The invention firstly provides a cover body for pouring out granular materials, which comprises a flaky body, wherein a container connecting part is arranged on the periphery of the body and used for being hermetically connected with the wall of a container; the container connecting portion are connected to the blocking sheet body through the cover body connecting portion, the blocking sheet body is integrally formed with the container connecting portion and the cover body connecting portion, the blocking sheet body is provided with through holes which are arranged above and below the communicating body, and the through holes are used for dumping out particle materials.

Optionally, a first mounting surface is arranged on the blocking sheet body, the cover body comprises a first membrane, and an adhesive layer is arranged between the first membrane and the first mounting surface;

when the first membrane is an aluminum alloy membrane, the adhesive layer correspondingly adopted by the first membrane is a hot melt adhesive layer, and the first membrane corresponding to the first mounting surface is hot-pressed to form sealing connection; or when the first membrane is an aluminum alloy membrane, the adhesive layer correspondingly adopted by the first membrane is a cold melt adhesive layer, and the first membrane corresponding to the first mounting surface is pressed and connected in a sealing manner by coating the cold adhesive;

or when the first membrane is an organic transparent membrane or an organic semi-transparent membrane, the adhesive layer correspondingly adopted is an epoxy resin adhesive layer serving as a main material, and the first membrane corresponding to the first mounting surface is hot-pressed to form sealing connection; or when the first membrane is an organic transparent membrane or an organic semi-transparent membrane, the adhesive layer correspondingly adopted is an epoxy resin adhesive layer serving as a main material, and the epoxy resin adhesive layer is coated to be in compression joint with the first membrane corresponding to the first mounting surface to form sealing connection.

Optionally, the diameter of the through hole for pouring material ranges from 0.2 to 45.5 mm; one or more through holes are arranged near the edge of the cover body; the first mounting surface is arranged around the barrier sheet body, so that the periphery of at least one through hole is sealed by the hot melt adhesive layer and/or at least one through hole is positioned at the non-hot melt adhesive sealing position.

Optionally, a non-hot-melt-adhesive sealed place exists between the blocking sheet body and the first membrane, where the first membrane is close to the blocking sheet body, and an air layer exists therebetween, where the air layer is communicated with the at least one through hole.

Optionally, the thickness of the first membrane is 0.01 to 0.09 mm, the thickness of the body at the barrier sheet body is 0.1 to 0.5mm, and a plastic layer is formed on the side of the first membrane facing the barrier sheet body, wherein the thickness of the plastic layer is 0.001 to 0.01 mm.

Optionally, block on the whole block piece face between lamellar body and the first diaphragm through hot melt for block lamellar body and first diaphragm and be connected, be the hot melt adhesive layer around the through-hole and seal, first diaphragm with block lamellar body zonulae occludens.

Optionally, the number of the through holes is multiple, the through holes are uniformly arranged, and the distance between the through holes is 1.3 to 5 times larger than the radius of the through holes; and a large through hole is arranged on the corresponding side of the through holes and used for extending into the spoon.

Optionally, the first membrane is a smooth surface, and the through hole is punched from one side of the first membrane to the other side of the body; or the through hole is punched from the other side of the body to one side of the first membrane, and the first membrane is connected with the blocking body in a hot-melt compression joint mode.

Optionally, the first membrane is a concave-convex surface, and the through hole is formed by punching from one side of the first membrane to the other side of the body; or the through hole is punched from the other side of the body to one side of the first membrane, the first membrane is connected with the blocking piece in a hot-melt compression joint mode, the first membrane and the blocking piece which are subjected to hot-melt compression joint are subjected to embossing treatment through the embossing piece, the male end face and the female end face of the embossing piece are concave-convex, punching concave points which are evenly spaced are formed on the lower surface of the first membrane, and after the concave-convex faces of the first membrane are extruded through the through hole, an arc-shaped indentation which is consistent with the shape of the through hole is formed and is displayed on the upper surface of the first membrane.

Optionally, the first membrane is provided with a handle part, the handle part is integrally connected with the first membrane, is connected to the edge of the first membrane, and is folded towards the first membrane at the free end to form a local double-layer membrane structure; the structure is positioned on one side where the through holes are positioned, and when the handle part tears the first membrane, the through holes can be exposed; and at least one through hole is arranged under the double-layer film structure.

Optionally, the covers are stacked, a plurality of identical covers are stacked up and down or left and right, the first membrane is in contact with the blocking sheet of the adjacent cover, and the double-layer membrane structure is in contact with the blocking sheet of the adjacent cover, so that the adjacent covers are partially separated.

The invention also provides a package which comprises the cover body used for pouring out the granular materials and a container wall surface connected with the container connecting part of the cover body in a sealing way, wherein the container wall surface and the cover body form an accommodating cavity with an opening at one side, the opening is a feeding bottom opening, and the container wall surface surrounds the feeding bottom opening to form a bottom opening connecting part used for connecting in a sealing way.

The invention also provides a container for containing the granular materials, which comprises the packaging material, and when the cover body is in a state that the lower opening is upward, the materials are loaded from the opening and are supported and connected by the blocking sheet body; the connecting part of the feeding bottom opening is hermetically connected with the connecting structure of the bottom cover.

The invention also provides a container for containing the granular materials, which comprises a container body with an upward material opening and a sealed lower part, the materials are poured from the material opening, and a top cover sealing part is arranged on the container body and is connected with the container connecting part of the cover body for pouring the granular materials in a sealing way.

The invention also provides a container for containing the granular materials, which comprises the cover body for pouring the granular materials and a container body, wherein the container body is provided with a sealing connecting part which is connected with the container connecting part of the cover body in a sealing way, and the materials which are easy to damp are arranged in a sealing cavity which is formed by the cover body and the container body in an enclosing way.

By adopting the cover body for pouring out the granular materials, the granular materials can be poured out through the cover body, namely, the packing materials of the cover body can be adopted, after the sealing structure is removed, the packing materials can be directly taken as a container for pouring and preserving the granular materials, and through the distribution of the through holes on the blocking piece of the cover body, the quantity of the poured granular materials can be easily controlled by a user, so that the cover body is greatly convenient for the user, the original packing materials are prevented from being transferred to other special seasoning bottles, and meanwhile, the storage problem of the original packed materials which are disassembled and sealed is solved.

Drawings

FIG. 1 is a partial cross-sectional view of a cap for pouring out particulate material in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1;

FIG. 3 is a partial cross-sectional view of a cap for pouring out particulate material according to another embodiment of the present invention;

FIG. 4 is a partial cross-sectional view of a cap for pouring out particulate material according to another embodiment of the present invention;

FIG. 5 is a partial cross-sectional view of a wrapper of an embodiment of the present invention;

FIG. 6 is a partial cross-sectional view of a container holding particulate material in accordance with an embodiment of the present invention;

FIG. 7 is a partial cross-sectional view of a container for particulate material according to another embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a cover for sealing a paper can according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view and an enlarged view of a paper can according to an embodiment of the present invention;

FIG. 10 is a sectional view and an enlarged view of a cover for sealing a paper can according to an embodiment of the present invention;

FIG. 11 is a cross-sectional view and an enlarged view of the top wall contact section of the cover body with an adhesive layer;

FIG. 12 is a cross-sectional view and an enlarged view of an adhesive layer provided on an inner wall surface contact section of the lid body;

FIG. 13 is a cross-sectional view and an enlarged view of an adhesive layer provided on an inner wall surface contact section and a part of a top wall contact section of the lid body;

FIG. 14 is a cross-sectional view and an enlarged view of an adhesive layer formed on a top wall contact section of the lid body after the lid body is pressed with the paper can;

FIG. 15 is a cross-sectional view and an enlarged view of an adhesive layer formed on a contact section of an inner wall surface of the lid body after the lid body and the paper can are pressed;

fig. 16 is a sectional view and an enlarged view of an adhesive layer provided on an inner wall surface contact section and a part of a top wall contact section of the lid body after the lid body and the paper can are pressed.

Reference numerals:

a cover body 100, a body 110, a blocking sheet 111, a cover body connecting part 112, a through hole 113, a large through hole 114,

a container connecting portion 120, an inner wall surface contact section 121, a top wall contact section 122, an outer wall surface contact section 123, an inner crimping section 1231,

a handle portion 131, a material port 132, an adhesive layer 133, a first membrane 134,

a paper can 200, a container wall 201, a bottom opening connecting part 202,

a first flared portion 210, a step portion 211, a second flared portion 220, label paper 300, and a sealant layer 400;

granular material 500, bottom cover 600.

Detailed Description

It is to be noted that the embodiments and features of the embodiments may be combined with each other without conflict in structure or function. The present invention will be described in detail below with reference to examples.

The invention discloses a cover body for pouring out granular materials, wherein the cover body and a corresponding container body jointly form a container enclosing structure for containing the granular materials, and a cavity for containing the granular materials is formed. In addition to the cover structure disclosed in the present invention, other cover structures may be further provided for the sake of appearance and sealing requirements, and do not interfere with the cover disclosed in the present invention. Wherein a particulate material is contained in the chamber, the particle size of the particulate material being from 0.01 to 25mm, the particle size herein being such that the particle size of the majority of the material meets the requirements of this particle size range, as there is no requirement for the material to be of uniform diameter. For irregular particles, the equivalent diameter of the volume is taken as the standard.

In order to further reduce dust falling on the cover body of the invention, a shielding material can be arranged outside the cover body, or an outer cover is arranged outside the cover body and does not interfere with the cover body disclosed by the invention. The covering referred to in the present invention means that the area of the covering is larger than the opening from the physical structure so that the opening can be shielded. The sealing structure or the sealing connection mentioned in the invention means that the sealing structure is airtight, and the air, moisture and oxygen permeability of the sealing structure meets the protection requirement of the materials in the container. The container body may be cylindrical, square column shaped, or any other shape that can adopt the above cap body, and the shape of the outer periphery of the cap body is not limited, and although the embodiment is mostly a circular cap body, it is a common technical means to change the shape of the outer periphery of the cap body to adapt to the shape of the container according to the design development ability of those skilled in the art. The material of the container body can be paper, plastic, iron, aluminum alloy and composite processed materials, and is not limited, and according to the property of the contained materials, the packaging material which can meet the requirements of humidity, air tightness and strength and has the consistent connectivity is also available for the technical personnel in the field without creative work in the design and development.

An embodiment of the present invention provides a cover for pouring out particulate materials, as shown in fig. 1, fig. 2 and fig. 5, including a lamellar body 110, a container connecting portion 120 is disposed on a periphery of the body 110, and the container connecting portion 120 is used for sealing and connecting a container wall 201; the container connecting portion 120 is connected to the blocking sheet 111 through the cover connecting portion 112, the blocking sheet 111 is integrally formed with the container connecting portion 120 and the cover connecting portion 112, the blocking sheet 111 is provided with a through hole 113 communicating the upper and lower parts of the body 110, and the through hole 113 is used for pouring out the granular material 500. The cover 100 is used to connect the container body 110, and a cavity for containing the particulate material 500 is formed in the container body 110, and the diameter of the through hole 113 is larger than that of the particulate material 500, so that the particulate material 500 can pass through the through hole 113 when pouring.

In this embodiment, the sheet-like body 110 of the lid 100, and the lid connecting portion 112 connected thereto, can form a tightly connected cavity with the container wall 201, so as to prevent the particulate material 500 from impacting structures other than the body 110 during transportation or use of the container containing the particulate material 500, or in the event of tipping over, such as an external plastic cover covering the can and the lid 100 for protecting and preventing dust from falling onto the lid 100 for pouring the particulate material 500. Even a small amount of the particulate material 500 passing through the through-hole 113 does not cause any problem, and after all, a large amount of impact force is blocked and absorbed by the cover 100 and the cover connection portion 112.

In some embodiments of the invention, the diameter of the through hole 113 for pouring out the material is in the range of 0.2 to 45.5mm, which encompasses the diameter of the usual edible granular material 500 such as salt, granulated sugar, chicken essence, pepper, etc. When the diameter of the material is larger, the diameter of the through hole 113 is selected to be larger, and when the diameter of the material is smaller, the diameter of the through hole 113 is selected to be smaller, and for different particle materials 500, the diameter of the through hole 113 can be 0.5mm, 0.8mm, 1.5mm, 2.8mm, 5.0mm, 8.0mm, 12mm, 22mm and the like. Thus, when pouring, the granular material 500 can be poured out from the through hole 113 by a small amount at a time, which is convenient for the user to control the amount poured out at a time, and to control the total amount poured out by a plurality of times. In certain instances, a relatively large opening such as a salt granule may be required for small granular material 500, and in restaurant applications where a cook may desire to pour a specific amount of salt quickly, a relatively large opening may be provided having a diameter of 45mm, and due to the numerous practices of the cook, the proper amount of pour may be easily and easily controlled through the aperture 113, which may range from 25mm to 45.5mm in order to accommodate the cook.

In other embodiments, at least one through hole 113 or a plurality of through holes 113 are provided near the edge of the blocking sheet 111, or around the entire circumference of the edge of the blocking sheet 111, so that the user can randomly pick up the container body 110 for pouring regardless of the current holding position; in other embodiments, at least one through hole 113 or a plurality of through holes 113 are located close to and in a part of the barrier sheet 111, so that the area of the through holes 113 is smaller, the number of the through holes 113 is smaller, and therefore, dust is less likely to enter the container, and humid air is less likely to enter the container; in other embodiments, the plurality of through holes 113 have different diameters, and the diameter of the through holes 113 near the edge of the blocking sheet 111 is smaller, so that the amount of the particulate material 500 poured each time can be more effectively controlled by adjusting the inclination angle of the container.

In some prior art, a manufacturer produces a packaging container containing a porous cap, such as a container for packaging pepper, which can easily lead out particulate materials from the through hole of the outer cap, but the air tightness is difficult to ensure, so that the particulate materials are easily affected by moisture during long-term storage and use, and in some embodiments of the present invention, the blocking sheet 111 is provided with a first mounting surface, and the cap body 100 comprises a first film 134, and an adhesive layer 133 is arranged between the first film 134 and the first mounting surface. This seals the through-holes 113 in the barrier sheet 111 and the first membrane 134 is removably attached, which means that the first membrane 134 can be manually torn open to expose one or more through-holes 113 in the barrier sheet 111. For easier tearing of the first film 134, an easy-to-grasp handle portion 131 is further provided at an edge of the surface of the first film 134, and the handle portion 131 may be integrally formed with the first film 134 to enhance the connection stability with the first film 134, and the handle portion 131 is lifted up to facilitate tearing of the first film 134. Through first diaphragm 134 for particulate material 500 in the container is sealed before the first use of user from the producer leaves the factory, avoids arousing the tide because through-hole 113 communicates the outside air. In the case of encapsulating the particulate material 500, the first film 134 is used to seal the plurality of through holes 113 on the blocking sheet 111, and may be an adhesive layer 133 forming a seal, and all the through holes 113 are disposed in an annular sealing area or a sealing area formed by extending along a curve; or a structure that a part of the first membrane 134 covers a through hole 113 is formed around the through hole 113 by the adhesive layer 133; or each through hole 113 is formed around the through hole 113 and a structure is formed by partially covering the through hole 113 with the first film 134 through the adhesive layer 133. All of the above structures can achieve the sealing of at least one or more through holes 113 by the first membrane 134, thereby sealing the inside of the container to which the cover body 100 is coupled. Through setting up first diaphragm 134 and blocking piece 111 sealedly to this gas tightness demand that has realized granule material in the container cavity makes the dry demand that also can satisfy granule material when long-term storage, and conveniently pours out granule material again after tearing first diaphragm 111 when using.

The first membrane 134 is connected to the cover 100 through the adhesive layer 133, and the connection is detachable, so that the force-bearing capability is low, and leakage is easily caused by force bearing, so that a large amount of particle materials 500 are required to be prevented from directly impacting the first membrane 134 as much as possible. Wherein the sheet-like body 110 of the cover 100 and the cover connecting portion 112 are connected to form a tightly connected cavity with the container wall 201, so as to prevent the particulate material 500 from impacting structures other than the body 110, such as the first membrane 134, during transportation or use of the container containing the particulate material 500, or in case of overturning. Even if a small amount of the particulate material 500 passes through the through-hole 113 and remains between the first membrane 134 and the blocking sheet 111 of the lid 100, the small amount of the particulate material 500 does not cause any problem, and after all, a large amount of impact force is blocked and absorbed by the lid 100 and the lid connecting portion 112.

As a preferred embodiment, the through holes 113 are distributed in a local area close to the edge of the blocking sheet 111, and at this time, the handle portion 131 is disposed at the edge of the first membrane 134 corresponding to the local area, as shown in fig. 2, a local area of the through holes 113 close to the edge of the blocking sheet 111 is distributed in a concentrated manner, and the handle portion 131 is disposed at the edge of the first membrane 134 corresponding to the local area, so that when a user pinches the handle to lift the handle, only the edge of the first membrane 134 is torn to expose the through holes 113, so that when the user uses the particulate material 500 in the cavity for the first time, the location of the through holes 113 is quickly achieved. And can also facilitate the user to selectively tear a portion of the first membrane 134 to expose only a portion of the through hole 113, so as to control the flow rate of the particles.

In some embodiments of the present invention, the first membrane 134 may be a thin membrane made of an aluminum alloy or a polymer organic material, and when the first membrane 134 is an aluminum alloy membrane, the adhesive layer 133 correspondingly used is a hot melt adhesive layer, and the first membrane 134 corresponding to the first mounting surface is hot-pressed to form a sealing connection.

Or in some embodiments of the present invention, when the first film 134 is an aluminum alloy film and the adhesive layer 133 applied correspondingly is a cold melt adhesive layer, the adhesive layer 133 is applied to press-contact the first film 134 corresponding to the first mounting surface to form a sealed connection.

In some embodiments of the present invention, the first film 134 is an organic transparent film or an organic translucent film, and the adhesive layer 133 adopted correspondingly is an epoxy adhesive layer 133, and the first film 134 corresponding to the first mounting surface is thermally pressed to form a sealing connection; or the first membrane 134 corresponding to the first mounting surface is pressed to form a sealing connection by coating the epoxy adhesive layer 133. Through transparent or translucent diaphragm, can see the position that through-hole 113 set up, convenience of customers tears the first diaphragm 134 of corresponding position to improve user experience.

Wherein the hot melt adhesive can be a PLA material or an environment-friendly water-based coating.

In some embodiments of the present invention, the first membrane 134 is a thin film made of an aluminum alloy or a polymer organic material, and when the first membrane 134 is an aluminum alloy membrane, the adhesive layer 133 correspondingly used is a cold adhesive coated on the first mounting surface, and the first membrane 134 corresponding to the first mounting surface is pressed to form a sealing connection; or the first membrane 134 is an organic transparent film or an organic semi-transparent film, the adhesive layer 133 adopted correspondingly is cold adhesive, and the first membrane 134 corresponding to the first mounting surface is pressed to form sealing connection.

One or more through-holes 113 are provided near the edge of the cover body 100 and the first mounting surface is provided around the barrier sheet 111 such that at least one through-hole 113 is peripherally sealed by a layer of hot melt adhesive and/or at least one through-hole 113 is located at a non-hot melt adhesive seal. Therefore, under the condition that the adhesive layer 133 is pressed at high temperature, part of the adhesive layer 133 can intrude into the vertical face of the through hole 113, so that the contact area is enlarged, and meanwhile, the connection strength in the horizontal direction is enhanced, and particularly, under the condition that the plurality of through holes 113 adopt the connection form, the connection tightness between the first membrane 134 and the blocking sheet body 111 in the horizontal direction can be effectively improved. As shown in fig. 1 and 2, the first mounting surface is disposed at a peripheral position of the blocking sheet 111 to form an annular mounting surface surrounding the periphery of the blocking sheet 111, and the through hole 113 is located in the annular mounting surface, so that the material of the adhesive layer 133 is saved while the blocking sheet 111 is sealed, and the sealing process between the first membrane 134 and the blocking sheet 111 is simplified.

In some embodiments of the present invention, a non-hot-melt adhesive seal is present between barrier sheet 111 and first membrane 134, where first membrane 134 is adjacent to barrier sheet 111, and all of through-holes 113 are disposed within an annular sealing region or a sealing region formed by extending along a curved line in a closed manner, such that a sealing region is formed, and an air layer is present between first membrane 134 and barrier sheet 111, and is in communication with at least one through-hole 113, such that when cover 100 is sealingly connected to a container, air in the air layer is in communication with air in the container. As shown in fig. 1 and 2, the first mounting surface is disposed in the sealing area of the blocking sheet 111 forming the annular mounting surface, and the annular mounting surface is a non-sealing area, so that a small gap exists between the blocking surface and the first membrane 134 in the sealing area, and the height of the gap is about 0.1-5mm, so as to form an air layer and communicate with the cavity of the container through the through hole 113. After a manufacturer of the granular material 500 seals the container containing the granular material 500 with the cover 100 of the embodiment to form a product, during transportation or transportation of the product, a part of the granular material 500 enters the space formed by the air layer from the gaps, and in the area of the blocking sheet 111 where the plurality of through holes 113 are located, the area of the blocking sheet 111 between the through holes 113 is small, so that a large gap is easily formed in the area with the first membrane 134, and the distance between the blocking sheet 111 and the first membrane 134 is large relative to the gap between the blocking sheet 111 where the non-through holes 113 are located and the first membrane 134, so that the granular material 500 entering the air layer is easily returned to the cavity of the container from the large gap where the through holes 113 are located during movement of the container.

In some embodiments of the present invention, the first membrane 134 is formed with a plastic layer having a thickness of 0.001 to 0.01 mm on the side facing the barrier sheet 111, and the first membrane 134 has a thickness of 0.01 to 0.09 mm, so that the first membrane 134 is thin and has a certain softness to be easily bent by force, so that the user can easily tear from the barrier sheet 111 by pinching the handle portion 131. The thickness of the body 110 at the position of the blocking sheet 111 is 0.1 to 0.5mm, such as 0.2mm, 0.25mm and 0.3mm, so that the body 110 meets the hardness requirement and the container connecting portion 120 is connected with a container, such as a paper can, with a certain strength, and the plastic layer is very thin relative to the thickness of the blocking sheet 111, and is made of a transparent material, so that the plastic layer is not easy to be perceived on the blocking sheet 111. The plastic layer heats and presses the barrier sheet 111 and the first film 134 by a device at the first mounting surface, so that the two form a hot melt adhesive layer at the first mounting surface, thereby realizing the sealed connection of the two.

In some embodiments of the present invention, as shown in fig. 4, the entire blocking sheet 111 surface between the blocking sheet 111 and the first membrane 134 is thermally welded, so that the blocking sheet 111 is connected to the first membrane 134, the periphery of the through hole 113 is sealed by the thermal melting adhesive layer, and the first membrane 134 and the blocking sheet 111 are tightly connected. Different from the schemes of fig. 1 and 2, the first mounting surface on the blocking sheet 111 is not limited around the blocking sheet 111, but is disposed on the surface of the entire blocking sheet 111, and when the machine heats and presses the blocking sheet 111 and the first film 134, the machine heats and presses the entire outer surface of the blocking sheet 111, and presses the first film 134, so that the formed thermosol layer is distributed between the surface of the entire blocking sheet 111 and the first film 134, and the periphery of the through hole 113 is sealed by the thermosol layer, so that no gap exists between the blocking sheet 111 and the first film 134. In the above embodiment, when the mounting surface of the blocking sheet 111 is located around the blocking sheet 111, the area inside the mounting surface allows an air layer to exist between the blocking sheet 111 and the first film 134, and a gap is formed between the blocking sheet 111 and the first film 134, because the thickness of the first film 134 is much thinner than that of the blocking sheet 111, if the first film 134 is an aluminum alloy film, the thin aluminum film is soft, so that after the first film 134 is connected to the first film 134 by heating and pressing, the area where the surface of the first film 134 is located in the air layer is likely to have uneven distribution, thereby affecting the appearance of the product formed after the whole cover 100 and the container are packaged. By adopting the scheme of the embodiment of thermally welding the body surface of the whole blocking sheet 111 and the first film 134, the surface of the first film 134 is flat, and the above-mentioned problems are avoided.

In some embodiments of the present invention, the number of the through holes 113 is plural, the plural through holes 113 are uniformly arranged, and the pitch of the through holes 113 is 1.3 times to 5 times the radius of the through holes 113; preferably, the through holes 113 are concentrated and uniformly distributed in an area of the blocking sheet 111, so that the flow rate of the discharged material particles is concentrated and uniform. Since in some embodiments, the first diaphragm 134 is a smooth, planar diaphragm, it is not subject to pressure; in some embodiments, the first film 134 is pressed by upper and lower dies during thermal welding, wherein the pressing surfaces of the dies have concave-convex shapes, and a plurality of first films 134 extending repeatedly in a repeated concave-convex pattern are formed at the pressing position. In the pressing process, the body 110 of the cover body is also pressed, and when the diameter of the through hole 113 is larger, a complete concave-convex pattern falls into a certain through hole 113, so that a larger downward pressure is applied to the membrane at the position, the consistency of the cover body 100 is reduced, and the risk of air leakage is generated. Therefore, on one hand, the aperture of the through holes 113 is limited to be 0.5 to 5.0mm, and the distance between the through holes 113 is limited to be 1.3 times to 5 times of the radius of the through holes 113, so that the above situation can be effectively reduced, and the consistency of the cover body 100 in the concave-convex pattern pressing process can be improved.

In some embodiments of the present invention, as shown in fig. 3, a large through hole 114 is further provided at a side corresponding to the plurality of through holes 113 for inserting a spoon or pouring the particulate material 500, wherein the plurality of through holes 113 are collectively distributed at a side close to the edge of the blocking sheet 111, the large through hole 114 is provided at the other side opposite to the area where the plurality of through holes 113 are located, and the diameter of the large through hole 114 is preferably 20-60mm, so as to facilitate penetration into a large tableware such as a spoon, a chopstick or a fork, etc., for facilitating the taking out of the particulate material 500 in a disposable large dose, or when the particulate material 500 such as chicken essence is difficult to pour out from the plurality of through holes 113 after being affected with moisture, the particulate material 500 is penetrated into the spoon or the like through the large through hole 114, thereby facilitating the use of a user. Like this empty the condition of particulate material 500 at a small amount of ration, can not influence the use at the big through-hole 114 that the opposite side set up, will pour when particulate material 500, through a plurality of through-holes 113 condition that are difficult for pouring, just can convenient pour in this big through-hole 114 side, perhaps take the ladle help to pour totally.

In some embodiments of the present invention, the first diaphragm 134 is smooth, and the through hole 113 is punched from one side of the first diaphragm 134 to the other side of the body 110; or the through hole 113 is punched from the other side of the body 110 to one side of the first membrane 134, the connection between the first membrane 134 and the barrier body 110 is hot melt compression joint, and the male and female end faces of the compression joint are planar. A ring-shaped hot-pressing surface is formed around the barrier body 110 to form a ring-shaped sealing area, and the first membrane 134 is smooth at a position corresponding to the plurality of through holes 113 in the middle. The opening direction on the blocking body 110 has two directions, which is to punch a hole from one side of the first membrane 134 to be adhered to the other side of the body 110, or punch a hole from the other side of the body 110 to one side of the first membrane 134, wherein the former opening direction can form a tiny burr on one side of the body 110 facing the container cavity, that is, the lower surface of the blocking sheet 111, and the latter opening direction can form a tiny burr on one side of the body 110 away from the container cavity, that is, the upper surface of the blocking sheet 111. When the burr is directed toward the first membrane 134 covered on the cover 100 from which the particulate material 500 is currently poured, the first membrane 134 is easily punctured to break the seal when motion or other squeezing occurs, and therefore, the burr removing means, in some embodiments, flattening is used to reduce the burr; in some embodiments, the burrs are reduced by sanding. The quality reliability can be effectively improved.

In the process of producing the lid body 100 by a lid manufacturer, firstly, the body 110 is compression molded by a mold device of a machine, and is punched to form the through hole 113; while another device cuts the aluminum foil to form the shape of the first membrane 134, including forming the handle portion 131 integrally formed with the first membrane 134; then, the body 110 and the first membrane 134 are heated and pressed by a machine to realize hot-melt compression joint of the two, the handle part 131 is shaped to be bent towards the surface of the first membrane 134 and arranged close to the surface, and because the handle part 131 is convenient to pull open and the through hole 113 is correspondingly seen in the tearing process, under the condition that the handle part 131 is bent and is simultaneously compressed with the corresponding position of the first membrane 134, at least one through hole 113 is positioned in the projected area of the handle part 131, the compression joint condition can be improved due to the thickness of the first membrane 134 with two layers locally, and the stability of the first membrane 134 is obviously improved due to the influence of the through hole 113.

In some embodiments of the present invention, the first diaphragm 134 is a concave-convex surface, and the through hole 113 is formed by punching from one side of the first diaphragm 134 to the other side of the body 110; or the through hole 113 is punched from the other side of the body 110 to one side of the first film 134, the connection between the first film 134 and the blocking member is hot-melt compression-connected, and the first film 134 and the blocking member which are hot-melt compression-connected are subjected to embossing treatment through an embossing member, wherein the male and female end surfaces of the embossing member are concave-convex, punching concave points which are evenly spaced are formed on the lower surface of the first film 134, and after the concave-convex surface of the first film 134 is extruded through the through hole 113, an arc-shaped convex indentation is formed and appears on the upper surface of the first film 134. In this embodiment, compared to the embodiment of the above embodiment in which the first film 134 is smooth, a process is added at the end of the process of producing the cover 100, the cover 100 after the handle shaping is sent to the mold of the embossing member for embossing, and the upper surface of the first film 134 and the lower surface of the barrier sheet 111 are simultaneously pressed by the concave-convex end surfaces of the upper and lower embossing members, wherein the end surface of the embossing member contacting with the upper surface of the first film 134 is concave, the end surface of the embossing member contacting with the lower surface of the barrier sheet 111 is convex, because the first film 134 is much thinner than the barrier sheet 111, the first film 134 is easily formed with respect to the barrier sheet 111, so that after pressing, the convex pattern of the concave-convex surface is formed on the upper surface of the first film 134, only the concave points are formed on the lower surface of the barrier, rather than the concave lines, and the through holes 113 on the barrier sheet 111 are formed during the pressing process, an arc-shaped convex indentation conforming to the shape of the through hole 113 is formed on the upper surface of the first diaphragm 134, and taking the through hole 113 as a circle as an example, a circular indentation conforming to the circular size of the through hole 113 is formed on the first diaphragm 134 after pressing. This circular indentation makes end user use the container finished product of granule material 500 for the first time, and the slight attention is promptly discernible to let the easy discernment of user block the position that the through-hole 113 of lamellar body 111 distributes under the first diaphragm 134, thereby convenience of customers controls the area size of tearing first diaphragm 134, in order to expose the through-hole 113 that corresponds the demand, thereby the control derives the flow of granule material 500. Moreover, in the above embodiment, when the first film 134 is connected to the hot melt adhesive layer of the blocking sheet 111 through the mounting surface disposed around the blocking sheet 111, the surface of the first film 134 is a smooth plane, the area of the first film 134 located within the mounting surface is easily subjected to uneven distribution, which affects the appearance of the whole cover 100, and the first film 134 and the blocking member subjected to hot melt crimping are subjected to embossing treatment through an embossing member in the embodiment, so that a convex pattern of a concave-convex surface is formed on the surface within the mounting surface of the first film 134, and the convex pattern enhances the appearance, and also eliminates the original uneven distribution to a great extent, i.e., the original uneven distribution is eliminated through the concave-convex surface, so that the surface of the whole first film 134 is leveled, and the problem of affecting the appearance is further overcome.

In some embodiments of the present invention, the first membrane 134 is provided with a handle portion 131, the handle portion 131 is integrally connected with the first membrane 134, is connected to the edge of the first membrane 134, and has a free end folded toward the first membrane 134 to form a partial double-layer membrane structure; the structure is positioned at one side of the plurality of through holes 113, and when the handle part 131 tears the first membrane 134, the through holes 113 can be exposed; and at least one through hole 113 is formed under the double-layered film structure. The plurality of through holes 113 are preferably located near the first membrane 134 where the handle is located so that when the first membrane 134 is torn by the handle, the through holes 113 are exposed.

In some embodiments of the present invention, the covers 100 are stacked, a plurality of identical covers 100 are stacked up and down or left and right, the first film 134 contacts the barrier sheet 111 of the adjacent cover 100, and the double-layered film structure contacts the barrier sheet 111 of the adjacent cover 100, thereby partially separating the adjacent covers 100.

After the cover body 100 is manufactured and packaged, a stacked state exists, that is, a plurality of identical cover bodies 100 are stacked up and down or left and right, taking the stacking of the upper and lower layers as an example, the stacking of the plurality of cover bodies 100 forms a cylindrical package with a height of about 50-200CM, such a high stacking may cause an up-and-down pressure to exist between the cover bodies 100, especially a pressure of the cover body 100 which is close to the lower layer and bears the cover body 100 thereon is relatively large, and in operation, in order to save space, a plurality of packages may be stacked up and down, so that the pressure is larger. In the above embodiment, when the body 110 is perforated to form the through hole 113 in the production process of the cover 100, the different directions of the perforation may form tiny burrs on different surfaces of the blocking sheet 111 of the body 110, if there is a tiny burr on the upper surface of the blocking sheet 111, the pressure formed between the covers 100 may cause the burr to affect the lower surface of the first film 134, that is, a tiny scratch mark is formed on the lower surface of the first film 134, and the scratch mark is located on the lower surface of the first film 134, so that the scratch mark is not easily perceived by a user when the user actually uses a product of the particulate material 500, and therefore, the user may not substantially affect the product in use or in appearance. If the blocking sheet 111 has a minute burr on the lower surface thereof, the burr may generate a minute scratch mark on the upper surface of the first film 134 of the other cover 100 which is overlapped and contacted therewith, and the scratch mark may increase due to an excessive pressure or a mutual sliding between the covers 100 during transportation and transportation, thereby generating a visible visual appearance to affect the user's feeling. The opening direction of the body 110 is preferably punched from the other side of the body 110 toward one side of the first membrane 134 to form a minute burr on the upper surface of the barrier sheet 111.

The invention also provides a package, as shown in fig. 5 and fig. 6, comprising a cover body 100 for pouring out the particulate material 500, a container wall 201 hermetically connected to the container connecting portion 120 of the cover body 100, wherein the container wall 201 and the cover body 100 form a receiving cavity with an opening at one side, the opening is a feeding bottom port, and a bottom port connecting portion 202 for sealing connection is formed at a position where the container wall 201 surrounds the feeding bottom port. In order to adopt the packaging of the cover body 100, in addition to the cover body 100 for pouring out the particulate material 500 and the container wall 201 hermetically connected with the container connecting portion 120 of the cover body 100, the container wall 201 and the cover body 100 form an accommodating cavity with an opening at one side, the opening is a feeding bottom opening, and a bottom opening connecting portion 202 for sealing connection is formed at the position where the container wall 201 surrounds the feeding bottom opening. The mill of production material can invert this packing material for the feeding end opening is up, and granule material 500 gets into the holding chamber from the feeding end opening after weighing, and granule material 500 is towards blockking the lamellar body because the action of gravity, and at this moment impact strength is great, through the lamellar body that blocks with lid 100 connecting portion integrated into one piece, the impact of resisting a large amount of granule material 500 that can be better.

Further, the container wall 201 surrounds the feeding bottom opening to form a bottom opening connecting portion 202 for sealing connection, the bottom opening connecting portion 202 needs to be neatly processed, and the end portion of the bottom opening connecting portion 202 is ready to be formed for connection, and usually can be flared or shrunk to facilitate connection of the corresponding connecting portion of the bottom cover. Because the cost of bottom is lower, and connect simple and mature technology, so, when material manufacture factory need fill granule material 500, will generally leave the bottom of simpler processing for oneself and seal the usefulness, that is to say, material manufacture factory can purchase the packing material that contains the lid 100 that is used for pouring out granule material 500 to the can manufacturing enterprise as above, fill granule material 500 after, carry out the sealed of bottom and this packing material again.

The invention also provides a container for containing the granular material 500, which comprises the packaging material mentioned in the embodiment, and when the cover body 100 is in a state that the lower opening is upward, the material is loaded from the opening and is supported and connected by the barrier sheet body; the feeding bottom port connecting part 202 is connected with the connecting structure of the bottom cover in a sealing manner.

The present invention also provides a container for containing particulate material 500, as shown in fig. 7, which comprises a container body having a material opening disposed upward and a lower portion sealed, and into which the material is poured from the material opening, and a cap sealing portion disposed on the container body and hermetically connected to the container connecting portion 120 of the cap body 100 for pouring the particulate material 500 as proposed in the above embodiment. In order to adopt the container for containing the granular material 500 of the cover body 100, a lower sealed container body is arranged under the cover body 100, the container body is provided with an upward arranged material opening 132, the container body is arranged upward, the granular material 500 enters the container body from the material opening 132, and a top cover sealing part is arranged on the container body and is connected with the container connecting part 120 of the cover body 100 in a sealing way. Under the condition, due to the adoption of the container body with the sealed bottom, the arrangement of the sealing connection structure and the processing of the sealing connection structure can be reduced, and particularly, for plastic containers, easily-formed aluminum alloy containers, iron tank containers or glass containers and the like, the sealing surface can be reduced, the sealing performance can be improved, and the influence of the processing technology on the granular materials 500 can be reduced. When a material manufacturer processes such a container containing the granular material 500, it is necessary to purchase the lid 100 and the container body, and in the case of loading the granular material 500, the container connecting portion 120 and the lid sealing portion are hermetically connected.

The invention also provides a container for containing the granular material 500, which comprises the cover body 100 for pouring out the granular material 500 and the container body, wherein the container body is provided with a sealing connecting part which is hermetically connected with the container connecting part 120 of the cover body 100, and the damp-prone material is the granular material 500 which is easy to damp, such as chicken essence, granulated sugar and the like, in a sealed cavity which is enclosed by the cover body 100 and the container body. For example, when the container is an iron can, the container connecting portion 120 of the lid 100 and one end of the iron can may adopt a sealing connection manner of mutual fastening and pressing as set forth in the prior art, and when the container is a paper can, one end of the paper can forms a flared portion, and the container connecting portion 120 is firstly crimped and sealed by pressing with the flared portion, thereby achieving sealing of the lid 100 and the container body at one time.

It should be noted that the container in the above embodiments may be a paper can, an iron can and a plastic can, in some embodiments, the iron can has a circular can opening, the cover body 100 for pouring out the particulate material 500 is disposed on the circular can opening of the iron can, an outward flange is disposed on the circular can opening of the iron can, the inner wall surface of the container connecting portion 120 at the periphery of the cover body 100 is provided with a sealant, the container connecting portion 120 is engaged with the flange of the can opening, the sealant is deformed to fill a gap between the container connecting portion 120 and the flange, and the container connecting portion 120 and the flange are engaged into a consolidated sealing connecting surface through machining.

In some embodiments, the plastic tank has a circular opening, and the flaring extends outward, the cover body 100 for pouring out the particulate material 500 is disposed on the circular opening of the plastic tank, the inner wall surface of the container connecting portion 120 at the periphery of the cover body 100 is provided with a sealant, the sealant abuts against the outward extending opening of the plastic tank, the container connecting portion 120 is pressed after clamping the plastic tank opening extension portion through machining, and the sealant is deformed to fill the gap between the container connecting portion 120 and the plastic tank opening, so that the container connecting portion 120 and the plastic tank opening form a consolidated sealing connecting surface.

The present invention also provides a lid for sealing a paper can, which adopts the structure of the lid for pouring out particulate material in the above embodiment, as shown in fig. 8 to 13, the periphery of the body 110 is provided with a container connecting portion 120, where the container connecting portion 120 corresponds to the container connecting portion 120 in the above lid for pouring out particulate material, and is used for connecting with a container body, which is a paper can in this embodiment. The container connecting portion 120 is provided with an inner wall surface contact section 121 that contacts the inner wall surface of the paper can 200, and the inner wall surface contact section 121 is provided with the sealant 400. The cover body 100 is used for sealing the paper can 200, and includes a middle body 110, the container connecting portion 120 on the periphery of the body 110 is connected with the paper can 200, and the container connecting portion 120 is pressed by a machine, so that the container connecting portion 120 is pressed against the inner and outer wall surfaces of one end of the paper can 200 to seal the two.

In some embodiments of the present invention, the container connecting portion 120 is connected to the blocking sheet 111 by a cover connecting portion (not shown), and the blocking sheet 111 is integrally formed with the container connecting portion 120 and the cover connecting portion.

In some embodiments, the blocking sheet 111 is provided with a through hole 113 communicating the upper and lower parts of the body 110, the through hole 113 being used for pouring out the particulate material. The blocking sheet 111 has a first mounting surface, the cover 100 further includes a first film 134, and an adhesive layer 133 is disposed between the first film 134 and the first mounting surface. The cover connecting portion is a portion of the body 110 connecting the container connecting portion 120 to the adhesive layer 133.

In some embodiments of the present invention, in order to press the paper can 200 against the lid body 100 to achieve a good seal, as shown in fig. 11, the container connecting portion 120 of the lid body 100 is coated with the sealant 400 before pressing, specifically, the sealant 400 is disposed at the top wall contact section 122 of the container connecting portion 120, so that the sealant 400 is located between the contact surfaces of the container connecting portion 120 and the paper can 200 during pressing to enhance the seal. When the cover body 100 and the paper can 200 are pressed, the sealant 400 is generally filled between the end surface of the paper can 200 and the container connecting portion 120, so that the air tightness requirement is realized by filling the sealant 400 between the paper can 200 and the cover body 100 when the cover body 100 and the paper can are pressed. Through test, the scheme can bear the air tightness requirement of the atmospheric pressure of about 20 Kp.

In some embodiments of the present invention, as shown in fig. 12, the sealant 400 is disposed on the inner wall surface contact section 121 of the container connecting portion 120, so that after the container connecting portion is pressed against the paper can 200, the sealant 400 is filled between the inner wall surface contact section 121 and the inner wall surface at the opening of the paper can 200, because the area of the inner wall surface contact section 121 relative to the top wall contact section 122 is large, and the inner wall surface contact section 121 and the inner wall surface of the paper can 200 are in close contact during machine pressing, the sealant 400 is pressed, and thus the two contact surfaces are sealed well. In addition, the inner wall of the paper can connected with the sealant 400 is a smooth wall, and the wall is specifically a paper wall, an aluminum foil wall or a plastic film wall, or a wall formed by combining the paper wall, the aluminum foil wall or the plastic film wall, and after pressing, the sealant 400 is in full contact with the smooth wall to form a good connecting surface. Experiments show that compared with the scheme of arranging the sealant 400 on the top wall contact section 122 of the container connecting part 120 in the previous embodiment, the scheme can bear the sealing performance detection of the atmospheric pressure above 30Kpa, even the atmospheric pressure can reach above 40Kpa, thereby greatly improving the sealing performance of the paper can 200, and further improving the product quality. The general paper tank is manufactured in a composite spiral bonding mode, the end face of the paper tank is rough and uneven after being cut, therefore, the end face is connected with the top wall contact section through the sealant in the prior art, the sealant can enter the end face after being pressed, burrs or paper materials are still in direct contact with the top contact section, the bonding and sealing performance is reduced, and the paper tank can only bear the sealing performance detection of the atmospheric pressure below 22 Kpa.

In some embodiments of the present invention, specifically, as shown in fig. 10, the container connecting part 120 includes an inner wall surface contact section 121, a top wall contact section 122 contacting with a top wall of the paper can 200, and an outer wall surface contact section 123 contacting with an outer wall surface of the paper can 200, which are connected in sequence, and form an approximately U-shaped structure, when the paper can 200 is packaged, an opening at one end of the paper can 200 extends into a cavity formed by the U-shaped structure, and is then pressed by a machine, so that the three sections are tightly fitted with the opening of the paper can 200 to achieve sealing.

In addition to the above-mentioned inner wall surface contact section 121, the sealant 400 may be provided on a part of the top wall contact section 122, as shown in fig. 13, the sealant 400 is coated on the inner wall surface contact section 121 and the part of the top wall contact section 122 which are connected to each other, so that the sealant 400 is filled between the section and the inner wall surface at the opening of the paper can 200 and at least a part of the end surface when the section and the paper can 200 are pressed, thereby achieving a better sealing effect.

In some embodiments of the present invention, in particular, in addition to the sealant 400 provided on the above-mentioned inner wall surface contact section 121 and part of the top wall surface contact section 122, the sealant 400 (not shown in the drawings) may be further provided on part of the outer wall surface contact section 123, so that when the paper can 200 is pressed, the sealant 400 is filled between the inner wall surface at the opening of the paper can 200, at least part of the end surface and at least part of the outer wall surface, thereby better achieving the sealing effect.

In some embodiments of the present invention, as shown in fig. 9 and 10, the body 110 is a plane, the inner wall surface contact section 121 is annularly connected to the periphery of the body 110, the inner wall surface contact section 121 forms an included angle B of 3 to 30 ° with respect to a cross-sectional line passing through the center of the body 110 and formed perpendicular to the cross-section of the body 110 and a cover body flaring formed perpendicular to the center line of the body 110, and the inner wall surface contact section 121 forms an outward flaring of the cover body 100 relative to the body 110. The surface of the paper can 200 in contact with the inner wall surface contact section 121 is a first flared portion 210, and an included angle a formed by a cross-sectional line formed by the flared portion with respect to a cross-section formed through an axis of the paper can 200 and the first flared portion of the axis is 3 to 30 °. The body 110 is flat, which means that the surface of the body 110 is substantially flat, and may be a horizontal plane, or the surface of the body 110 is formed in a step shape to increase the strength of the cover 100 against bending.

In the process of pressing the cover body 100 and the paper can 200 by the machine, the press head of the machine penetrates into the inner wall surface contact section 121 and abuts against the body 110, then the outer wall surface contact section 123 is bent inwards by the forming and clamping device of the machine and is pressed with the outer wall surface of the paper can 200 to press the paper can 200 and the cover body 100, and after the pressing is finished, the paper can 200 and the cover body 100 naturally fall off from the press head of the machine to finish the whole process. By forming the outward flaring of the inner wall surface contact section 121 relative to the body 110, the cover body 100 can be naturally released from the press head after the cover body 100 and the paper can 200 are pressed by a device, and the opening of the paper can 200 is set to be an outward flaring surface, which is beneficial to forming effective combination of the outer wall surface contact section 123 of the cover body 100 and the outer wall surface of the flaring surface of the paper can 200 and preventing the cover body 100 from releasing in the using process.

In some embodiments of the present invention, in order to glue the cover body 100 to form the sealant 400, the cover body 100 may be held by a gluing machine to rotate at a high speed, and the sealant nozzle sprays the sealant made of an environmentally friendly material at a fixed position, so as to uniformly coat the sealant 400 on the container connecting portion 120 of the cover body 100; or the position of the cap body 100 is fixed and the sealant nozzle is rotated at a high speed around the container connecting portion 120 of the circumference of the cap body, thereby uniformly applying the sealant 400 to the container connecting portion 120 of the cap body 100.

The present invention further provides a sealing structure, as shown in fig. 14 to 16, including the above-mentioned lid structure for sealing a paper can, and further including a paper can 200, the lid 100 and the paper can 200 are hermetically connected by pressing, and the paper can 200 and the inner wall surface contact section 121 of the lid 100 are bonded by a sealant 400.

In the process that the paper can 200 and the cover body 100 are pressed by a machine, according to the difference of the inclination angles of the press heads of the machine, in the pressing process, the included angle C of the flaring of the cover body 100 formed by the contact of the inner wall surface with the inner wall surface is changed or unchanged, if the inclination angle of the press head is different from the first flaring included angle, the included angle C of the flaring of the cover body 100 after the pressing is finished is changed, for example, the angle is slightly increased or slightly decreased; if the inclination angle of the pressure head is the same as the flaring included angle of the cover body 100, the flaring included angle C of the cover body 100 is unchanged after pressing is completed. In the pressing procedure, the thickness of the contact section of the paper can 200 and the container connecting part 120 of the cover body 100 is slightly thinned by the extrusion force formed by pressing, the sealant 400 is also thinned and extends in the width direction, so that the area of the sealant 400 is increased, the contact area between the contact surface of the paper can 200 and the contact surface of the container connecting part 120 is enlarged, in addition, in the pressing process, micro gaps exist at some places at the contact part of the paper can 200, which is prevented from being in contact with the container connecting part 120, and the gaps can be filled after the thinning and extending of the sealant 400, so that the air tightness and the sealing effect are enhanced.

Specifically, taking the example of fig. 12 in which the sealant 400 is disposed at the inner wall surface contact section 121, during the pressing process of the cover body 100 and the machine, the sealant 400 becomes thinner and extends towards both ends in the width direction, specifically along the peripheral direction of the body 110 and the direction of the top wall contact section 122, as shown in fig. 15. Thereby increasing the area of the sealant 400. Fig. 13 and 16 show a variation before and after pressing in which the inner wall surface contact section 121 and a part of the top wall contact section 122 of the lid body are provided with the sealant 400, and fig. 11 and 14 show a variation before and after pressing in which the top wall contact section 122 is provided with the sealant 400. As can be seen, the sealant 400 becomes thinner and increases in area after pressing. Fig. 14 shows a cross-sectional view of the sealant 400 after pressing the cover body 100 and the paper can 200, which are provided with the sealant at the top wall contact section as shown in fig. 11, and the sealant is also thinned as shown in the drawing, but the area size of the sealant is smaller than that of the former two ways, and a gap state exists between the sealant and the end face of the paper can 200 and the top wall contact section 122, which is not completely attached, so that the air tightness is not as good as that of the solutions shown in fig. 15 and 16.

In some embodiments of the present invention, as shown in fig. 14 and 15, during the machine pressing process, the free end of the outer wall surface contact section 123 is formed as the inner curled section 1231, the flared section of the paper can 200 is formed as the stepped section 211, and the curled section 1231 is in close contact with the stepped surface of the stepped section 211, thereby achieving stable and reliable connection of the lid body 100 and the paper can 200. Depending on the pressing machine, the outer wall-contacting segment 123 may be curved or flat after pressing, and in this embodiment the outer wall-contacting segment 123 is curved.

Specifically, in the machine pressing process, the inner wall surface contact section 121 is elongated after being formed, the width of the top wall contact section 122 is narrowed, the outer wall surface contact section 123 is also elongated, the free end of the outer wall surface contact section 123 is bent inward to form the inner curled section 1231, the inner curled section 1231 is abutted to the outer wall surface of the paper container 200 to generate stress, the outer wall surface of the paper container 200 is formed into the stepped portion 211 by the inner curled section 1231, so that the tight abutment of the inner curled section 1231 and the outer wall surface of the paper container 200 is realized, and the firm connection between the cover body 100 and the paper container 200 is realized.

In some embodiments of the present invention, the other end of the paper can 200 is formed with a second flared portion 220, as shown in fig. 9. The flaring thereof may be shaped in the same manner as the first flared portion 210. The manufacturer of the paper can 200 expands the paper can 200 and both ends, presses one end of the paper can 200 and the cover body 100, and then sells the paper can to a food manufacturer, and the food manufacturer fills food materials such as chicken essence, potato chips and the like into the other open end of the paper can, and then presses the bottom cover and the paper can 200, thereby realizing the packaging of the food can. The second flared portion 220 has the same function as the first flared portion 210, and is favorable for forming a stable connection with the bottom cover, thereby improving the overall sealing effect.

In some embodiments of the present invention, the paper can 200 is externally covered with the label paper 300, and both ends of the label paper 300 are aligned with both ends of the paper can 200, so that the label paper 300 is pressed together with the surface of the paper can to be brought into close contact with the outer wall surface contact section 123 of the cover body 100 during the pressing of the paper can 200 with the cover body 100.

In some embodiments of the present invention, the paper tube forming the paper can 200 is at least one spiral paper layer, the inner side of the paper layer is spirally provided with an aluminum foil layer or an aluminum-plated film layer, the aluminum foil layer and the aluminum-plated film layer are provided with PE layers facing the inner side of the paper tube (or the aluminum foil layer or the aluminum-plated film layer is not provided and the paper is attached with PE layers facing the inner side of the paper tube), one side of the PE layer is provided with an inward-turned hem, the width of the hem is 0.5 to 35 mm, preferably 10 mm, the PE layers at the hem and the PE layer at the position overlapping with the hem in the process of rolling the paper tube are heated to heat and press the PE layers into a whole body to form a sealed PE layer,

in order to improve the lubricity of the PE layer, an oil layer is coated on the PE surface of the aluminum foil layer, the oil layer is used as a lubricant for preventing the PE film from being damaged due to friction between the PE layer and a pipe coiling mould, and the PE film can be prevented from being damaged by a layer of paper isolation between the PE film and the mould.

The PE layer extends to one end of the body of the paper can 200, and when the mouth is flared, the inner side of the PE layer has a turned edge, and the PE layer at the turned edge is welded to the PE layer at the overlapped position. The inner side of the PE layer in the flaring section is also provided with an aluminum foil layer, an aluminum-plated paper layer or a rough paper-rolling layer end face, the outer side of the paper-rolling layer is provided with a packaging decoration layer, and the outermost side of the flaring section is the end face of the packaging decoration surface.

The invention also provides a sealing tank which comprises the sealing structure, and the two ends of the sealing tank can be pressed and sealed by adopting the cover arranged by gluing and the two ends of the paper tank, so that the pressure bearing can reach the test level of more than 30Kp, and the high-level air tightness can be realized.

The invention also provides a sealed tank with the built-in moisture-sensitive substances, which comprises the sealed tank, wherein the sealed tank is internally packaged with moisture-sensitive substances such as chicken essence, granulated sugar and other foods.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.