阅读说明：本技术 一种热收缩包装袋 (Heat-shrinkable packaging bag ) 是由 赖建民 田心平 赖新民 李玲 黄永志 于 2019-10-03 设计创作，主要内容包括：本发明公布了一种热收缩包装袋,包括：前袋面和后袋面,所述前袋面和后袋面的两侧和底部封闭,上端开口,构成袋体；在所述袋体的中上部横向设置有一条易撕线,所述前袋面横向粘贴有一粘贴带用以覆盖所述易撕线。本发明所公布出来的热收缩包装袋,具备使用时方便打开的优点。(The invention discloses a heat-shrinkable packaging bag, which comprises: the bag comprises a front bag face and a rear bag face, wherein the two sides and the bottom of the front bag face and the bottom of the rear bag face are closed, and the upper ends of the front bag face and the rear bag face are opened to form a bag body; an easy-to-tear line is transversely arranged at the middle upper part of the bag body, and a sticking belt is transversely stuck on the front bag surface and used for covering the easy-to-tear line. The heat-shrinkable packaging bag disclosed by the invention has the advantage of convenience in opening when in use.)

1. A heat-shrinkable packaging bag comprising: the bag comprises a front bag face and a rear bag face, wherein the two sides and the bottom of the front bag face and the bottom of the rear bag face are closed, and the upper ends of the front bag face and the rear bag face are opened to form a bag body; the method is characterized in that: an easy-to-tear line is transversely arranged at the middle upper part of the bag body, and a sticking belt is transversely stuck on the front bag surface and used for covering the easy-to-tear line.

2. The heat-shrinkable packaging bag according to claim 1, wherein: the lower end of the front bag face is also provided with a reverse folding opening which faces outwards; the opening ends of the front bag surface and the rear bag surface are staggered.

3. The heat-shrinkable packaging bag according to claim 1 or 2, wherein: the easy-tear line is a dotted line.

4. The heat-shrinkable bag according to claim 3, wherein: the length of the dotted line is equal to the width of the pouch.

5. The heat-shrinkable bag according to claim 4, wherein: a plurality of air holes are arranged between the easy-tearing line and the reverse-folding opening of the bag body.

6. The heat-shrinkable packaging bag according to claim 1 or 2, wherein: the front bag face and the rear bag face are both made of POF and PE cross-linked shrink films.

7. The heat-shrinkable packaging bag according to claim 1 or 2, wherein: the material of pasting the area is PE, it towards to paste the area the latter half of the face of easy tear line scribbles the viscidity thing.

Technical Field

The invention relates to the field of packaging materials, in particular to a heat-shrinkable packaging bag.

Background

The packaging bag is a bag used for packaging various foods and articles, the consumption level of people is continuously improved along with the development of the society, meanwhile, with the rise of light-weight packaging, the packaging bag is widely used for bundling and packaging various products in industry and retail industry, such as food, cosmetics, drugs and electronic products, the existing packaging bag is mostly made of Polyethylene (PE), poly in Shrink Film (POF), Polyvinyl chloride (PVC) plastic Film, the POF and PE cross-linked Film belong to a novel material, and are colorless, tasteless, odorless, transparent and nontoxic insulating materials, the Polyolefin cross-linked Film generally adopts a surface radiation method, the film surface is processed by cross-linking treatment, and the performance of the film after surface treatment is superior to that of a common polyolefin film, and the film has the comprehensive performance of high transparency, high strength and rubbing resistance. Therefore, the packaging bag made of the POF and PE cross-linked film has high safety and is suitable for light packaging of industrial products.

Along with the use of wrapping bag more and more frequent, have higher requirement to convenience and the availability factor that the product used: wherein the difficulty of opening before and after shrinking is two problems.

Present shrink film wrapping bag majority is the plastic bag of constituteing through two front and back thin slices, this type of wrapping bag is placed and is overlapped together a plurality of wrapping bags usually, because of the existence that does not have the air between two thin slices around the single wrapping bag, adsorb each other between two thin slices and be difficult for opening together around the wrapping bag, the user can not be easily open the wrapping bag and put into the wrapping bag with article, thereby it is inconvenient to make the wrapping bag use when adorning the product before the shrink, and normal wrapping bag is after packing the product shrink, all sealed together in four sides, because all be airtight and hug closely in the product surface after the shrink, it is also inconvenient to open when client uses, the product is very easily unrestrained, easily cause the product dispersion when opening, in disorder.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention discloses a heat-shrinkable packaging bag, aiming at solving the problems that the packaging bag is not easy to open before and after shrinkage and is inconvenient to use.

The technical scheme of the invention is as follows:

a heat-shrinkable packaging bag comprising: the bag comprises a front bag face and a rear bag face, wherein the two sides and the bottom of the front bag face and the bottom of the rear bag face are closed, and the upper ends of the front bag face and the rear bag face are opened to form a bag body; the method is characterized in that: an easy-to-tear line is transversely arranged at the middle upper part of the bag body, and a sticking belt is transversely stuck on the front bag surface and used for covering the easy-to-tear line.

Further: the lower end of the front bag face is also provided with a reverse folding opening which faces outwards; the opening ends of the front bag surface and the rear bag surface are staggered.

Further: the easy-tear line is a dotted line.

Further: the length of the dotted line is equal to the width of the pouch.

Further: a plurality of air holes are arranged between the easy-tearing line and the reverse-folding opening of the bag body.

Further: the front bag face and the rear bag face are both made of POF and PE cross-linked shrink films.

Further: the material of pasting the area is PE, it towards to paste the area the latter half of the face of easy tear line scribbles the viscidity thing.

The invention has the beneficial effects that: the utility model discloses a bag face of thermal contraction wrapping bag, including the bag face of wrapping bag, the upper end position of wrapping bag face is transversely set up one and is easily torn the line to paste easily on tearing the line and have the sticky tape, when user of service when using the wrapping bag, paste the area on tearing the wrapping bag body, the viscidity in the sticky tape of wrapping bag this moment makes the broken line can be smooth torn out an opening, and user of service can make the smooth opening of wrapping bag through pulling this opening. 2. According to the invention, the front bag face and the rear bag face of the opening end of the packaging bag are staggered, and the reverse folding opening is used on the bag face of one side, so that when a user uses the packaging bag to package a product, the packaging bag can be easily pulled open through the dislocation and the reverse folding opening, and the packaging bag is more convenient to use.

Drawings

FIG. 1 is a schematic view of an adhesive tape attached to a tear line on a package;

fig. 2 is a schematic view showing the structure of the packing bag with the adhesive tape torn to expose the easy-tear line.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the present invention discloses a heat-shrinkable packaging bag, comprising: the front bag face and the rear bag face are respectively a front bag face 10 and a rear bag face 11, two side edges and bottom edges of the front bag face 10 and the rear bag face 11 are sealed, an opening at the upper end is not sealed, and the front bag face 10 and the rear bag face 11 form a bag body of the packaging bag. An easy-to-tear line 13 is transversely arranged at the middle upper part of the bag body, the easy-to-tear line 13 is formed by processing a line pressing knife, and a pasting belt 12 is pasted on the easy-to-tear line. That is, the easy-tear line 13 is present at the same position on both the front bag surface 10 and the rear bag surface 11, and the adhesive tape 12 is adhered to the front bag surface 10. It will be appreciated that the adhesive strip 12 overlies the tear line 13 along the tear line 13.

In fig. 1 and 2, the upper part of the adhesive tape 12 is printed with fonts and the side facing the easy-tear line 13 (i.e., the side facing the front pouch side) is not sticky, and the fonts include, for example, "please tear along here", and the lower part is not printed with fonts and the side facing the easy-tear line 13 (i.e., the side facing the front pouch side 10) is coated with stickers, such as glue and glue. When the bag body needs to be opened to contain articles, namely the front bag face 10 and the rear bag face 11 need to be separated, the adhesive tape 12 (see fig. 2) is torn, the middle upper part of the packaging bag enables the easy-tear line 13 to be smoothly torn out of an opening through the viscosity of the adhesive tape 12, air enters the opening, and a user can smoothly open the packaging bag by pulling the opening, so that the packaging bag is convenient for the user to use.

As an optimization of the technical scheme of the invention, the lower end of the front bag surface 10 in fig. 1 and 2 is further provided with a reverse folding opening 15, the reverse folding opening 15 faces outwards, and the opening ends of the front bag surface 10 and the rear bag surface 11 are arranged to be staggered, so that when a user uses the packaging bag to fill products, the packaging bag is easier to pull open through the dislocation and the reverse folding opening, and the use is more convenient.

Preferably, the easy-to-tear line 13 is a dotted line, so that the bag body can be torn off more easily.

In order to make the bag look more beautiful and make the easy-to-tear line 13 tear, the length of the easy-to-tear line 13 is preferably selected to be equal to the width of the bag.

In order to further facilitate the front bag surface and the rear bag surface of the bag body to be more conveniently torn, a plurality of air holes 14 are arranged in the middle of the bag body, namely, the bag body between the reverse folding opening 15 and the easy tearing line 13. The air holes 14 facilitate air to enter the bag body, so that the bag body is easier to tear.

Further, the front bag surface 10 and the rear bag surface 11 are preferably made of a common POF or PE crosslinked film, but of course PVC may be selected, and the adhesive tape 12 is preferably made of PE. Besides the above materials, the materials of the front bag surface, the back bag surface and the adhesive tape can also be selected from the following materials: (1) LDPE-Low Density Polyethylene (LDPE) is the most used variety in plastic packaging and printing industries of various countries. The polyethylene has a specific gravity of 0.92-0.93, can float in water, has low crystallinity (60%), and can be used for bulk polymerization under the pressure of 1000-3000 kg/C square meter, so that it is also called high-pressure polyethylene. At 23 degrees celsius, the density is around 0.92. The film is poor in calender moldability and can be processed into a tubular film by inflation molding. Is suitable for food packaging, fiber product packaging and daily chemical product packaging.

HDPE- -high density polyethylene, HDPE for short, the density is 0.941-0.965 g/cc. Is made by low pressure polymerization, so it is also called low pressure polyethylene. It was milky white, indicating poor gloss. The processed film may be used in blow molding and T-die extrusion processes. Heat resistance, boiling resistance, cold resistance, freezing resistance, moisture resistance, gas resistance, good isolation performance, difficult damage and twice strength of LDPE. The opening is easy. The paper imitating property is strong, and the paper imitating plastic film is known as the paper imitating plastic film.

BOPP, biaxially oriented polypropylene film. The biaxially oriented polypropylene film is also called biaxially oriented polypropylene film, and is called BOPP (biaxially oriented Polypropylene) by English abbreviation code, and is characterized in that the oriented molecules are oriented, and the mechanical strength, the folding strength, the air tightness and the moisture-proof barrier property are superior to those of common plastic films. The unit price is lower than that of glassine paper compared to glassine paper. Because the film has excellent transparency, the reproduced color after the inner printing is extremely bright and beautiful, and the film is an important base material of plastic composite flexible packages.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included therein.