阅读说明：本技术 发泡成型体、鞋体部件以及其制造方法
(Foam molded body, shoe body member, and method for producing same
) 是由 萧锦勋 于 2018-08-31 设计创作，主要内容包括：本发明提出一种发泡成型体、鞋体部件及其制造方法,该制造方法包含：设置步骤,将发泡基础材料置入不会受到微波影响的模具中,其中,该发泡基础材料包含多个热可塑性聚氨酯(TPU)的半发泡颗粒及至少一镶嵌元件,且该镶嵌元件为不会受到微波影响的材料或其制成品；以及发泡步骤,对模具以微波方式进行加热,使模具中该些半发泡颗粒受微波作用产生温度提升而进行发泡并相互挤压,令镶嵌元件受挤压而固定,经冷却脱模后形成镶嵌有镶嵌元件的发泡成型体。(The invention provides a foam molding body, a shoe body component and a manufacturing method thereof, wherein the manufacturing method comprises the following steps: setting, namely placing a foaming base material into a mold which cannot be influenced by microwaves, wherein the foaming base material comprises a plurality of semi-foaming particles of Thermoplastic Polyurethane (TPU) and at least one embedded element, and the embedded element is a material or a finished product thereof which cannot be influenced by the microwaves; and a foaming step, heating the mould in a microwave mode, so that the semi-foaming particles in the mould are heated by the microwave action to foam and mutually extrude, the embedded element is extruded and fixed, and a foaming forming body embedded with the embedded element is formed after cooling and demoulding.)
1. A method for producing a foamed molded body, characterized by comprising:
a setting step, placing a foaming base material into a mould which is not influenced by microwave, wherein the foaming base material comprises a plurality of semi-foaming particles of thermoplastic polyurethane and at least one mosaic element, and the mosaic element is a material or a finished product thereof which is not influenced by microwave; and
a foaming step, heating the mould in a microwave mode, so that the semi-foaming particles in the mould are heated by the microwave action to foam and extrude each other, the embedded element is extruded and fixed, and a foaming molding body embedded with the embedded element is formed after cooling and demoulding.
2. The method of producing a foam molding according to claim 1, further comprising: in the setting step, one or more positioning elements are placed in the mold, and the inlay element is positioned by at least one of the positioning elements
The positioning elements are made of semi-foaming materials, and are heated together with the semi-foaming particles in a microwave mode in the foaming step to foam.
3. The method of producing a foam molding according to claim 2, further comprising: in the setting step, the mold is divided into different blocks by at least one of the positioning elements, and a plurality of first particles having a first particle size range and a plurality of second particles having a second particle size range are respectively set in the different blocks,
wherein the median value of the first particle size range is substantially greater than the median value of the second particle size range.
4. The method of claim 1, wherein the cavity of the mold is in the shape of a shoe body part, and the foam molding is a shoe body part.
5. The method of claim 4, further comprising, prior to the foaming step, placing a last over which an upper is placed, such that at least a portion of the upper contacts the semi-foamed particles, and such that the semi-foamed particles placed on the last are distributed along a bottom of the last.
6. The method of claim 5, further comprising spreading semi-foamed particles, which are the same as or different from the semi-foamed particles, between the upper and the last along the bottom of the last before the foaming step.
7. The method of claim 5, wherein the upper fitted over the shoe last has a double-layered structure, and the method of manufacturing the foamed molded body further comprises spreading semi-foamed particles, which are the same as or different from the semi-foamed particles, between an inner layer and an outer layer of the upper along a bottom of the shoe last before the foaming step.
8. The method of claim 1, wherein one or more film-like members are further partially disposed in the mold to contact the semi-expanded particles in the disposing step,
wherein the film-like elements comprise a material that can be heated by microwave.
9. The method of claim 8, wherein at least one of the film-like members is a waterproof moisture-permeable film, and the method of manufacturing the foamed molded body further comprises coating at least a portion of the foamed base material with the waterproof moisture-permeable film before the foaming step.
10. The method of claim 8, wherein at least one of the film-like elements has a pattern, and the foamed molded body formed after foaming has a logo pattern corresponding to the pattern.
11. The method of claim 8, wherein at least one of the film-like members comprises a foamable material or a material that can be heated by microwave to be partially melted to weld other materials and is wrapped to define a wrapping space, and at least a portion of the foamed base material disposed in the mold is disposed in the wrapping space,
wherein the coating space comprises an extension section without the semi-foaming particles arranged therein
Wherein the foam molding body is provided with an extension part formed by filling the extension section with the half-foaming particles through foaming.
12. A foamed molded body produced by the method for producing a foamed molded body according to any one of claims 1 to 11, characterized in that:
the embedding element is pressed and fixedly embedded in a foaming structure formed by foaming the semi-foaming particles and mutually pressing and welding the surfaces of the semi-foaming particles.
13. A shoe body part produced by the method for producing a foamed molded body according to any one of claims 1 to 11, characterized in that:
the shoe body part is the foaming forming body with the shape of the shoe body part, and the embedding element is extruded and fixedly embedded in a foaming structure formed by mutually extruding and welding the surfaces of the semi-foaming particles through foaming.
14. A foamed molded article, comprising:
a foam structure formed by foaming a plurality of semi-foamed particles of thermoplastic polyurethane; and
at least one mosaic element which is made of material or finished product thereof which is not influenced by microwave and is fixedly embedded in the foaming structure formed by the surfaces of the semi-foaming particles which are foamed and mutually extruded and welded by extrusion.
15. The foamed molded body according to claim 14, wherein the semi-foamed particles have a plurality of first particles having a first particle size range and a plurality of second particles having a second particle size range,
the median value of the first particle size range is substantially greater than the median value of the second particle size range, and
the hardness of the portion formed by foaming the first particles is lower than that of the portion formed by foaming the second particles.
16. The foamed molding of claim 14 further comprising one or more film-like elements welded or bonded to the surfaces of the semi-foamed particles.
17. The foam molding of claim 16 wherein at least one of the film-like elements is attached to the foam molding in a pattern corresponding thereto.
18. The foam molding of claim 16, wherein at least one of the membrane elements is a waterproof moisture-permeable membrane.
19. The foam molding of claim 16 wherein at least one of the film-like elements covers the foam structure.
20. The foam molding of claim 14 wherein the foam molding is a shoe body part having a shoe body part shape.
21. The foamed molded body according to claim 20, wherein the shoe body part is bonded to at least a portion of an upper in a form of fusion.
Technical Field
The present invention relates to a foam molded body, a shoe body member and a method for producing the same. More particularly, the present invention relates to a foamed molded body having an inlay element, a shoe body member, and a method for manufacturing the same.
Background
Molded plastic rubber articles have been widely used in various fields in modern times to produce various appliances or products. Such as toys, shoes, automotive parts, electronic parts, etc. In general, injection molding is used to melt plastic at high temperature and then inject the plastic into a mold to form various plastic-rubber molded bodies. However, in this process, an injection molding machine and a relatively high-temperature-resistant mold are required to be arranged, so that the setting specification and cost of the entire process are increased. In addition, the high temperature of injection molding is also not favorable for adding members which are required to be additionally embedded in the plastic rubber molded body when preparing the plastic rubber molded body. Therefore, there is a need for the development of various configurations of molded plastic rubber articles, methods for preparing such molded plastic rubber articles, and detailed processes for adapting the molded plastic rubber articles to various designs or products.
In view of the above, in order to provide other plastic-rubber molded products with other structures, taiwan patent publication TW201736423A proposes a foamable composition for foaming, foamed Thermoplastic Polyurethane (TPU) particles produced by foaming and granulating the foamable composition, a microwave molded product made of the foamable composition, and a corresponding manufacturing method; taiwan patent publication TW201736450A proposes a method of forming a microwave molded body on a surface portion of an object and a microwave molded body produced thereby; and taiwan patent publication TW201736093A proposes a corresponding method for forming microwave-formed shoes and microwave-formed shoes made thereby. The taiwan patent publication discloses several foaming granular materials specially designed for adjusting the color or hardness of the granules during granulation, and discloses a part or an object which can be bonded with the foaming granular material through an adhesive layer or can be welded with the foaming granular material through melting by microwave heating. However, the above patent does not further propose materials applicable according to the properties of microwave heating and various configurations of foaming, so as to further provide a method for preparing microwave molded bodies with various detailed structures and configurations and a finished product thereof.
Disclosure of Invention
The technical means for solving the problems are as follows:
in order to solve the above problems, an embodiment of the present invention provides a method for producing a foamed molded body. The method comprises the following steps: setting, namely placing a foaming base material into a mold which cannot be influenced by microwaves, wherein the foaming base material comprises a plurality of semi-foaming particles of Thermoplastic Polyurethane (TPU) and at least one embedded element, and the embedded element is a material or a finished product thereof which cannot be influenced by the microwaves; and a foaming step, heating the mould in a microwave mode, so that the semi-foaming particles in the mould are subjected to temperature rise under the action of microwaves to foam and extrude each other, the embedded element is extruded and fixed, and a foaming forming body embedded with the embedded element is formed after cooling and demoulding.
In one embodiment, the method further comprises: in the setting step, one or more positioning elements are placed in the mold, and the inlay element is positioned by at least one of the positioning elements, and wherein the positioning elements are made of semi-foamed material and are heated in a microwave manner together with the semi-foamed particles in the foaming step to foam.
In one embodiment, the method further comprises: in the setting step, the mold is divided into different blocks by at least one of the positioning elements, and a plurality of first particles having a first particle size range and a plurality of second particles having a second particle size range are respectively set in the different blocks, wherein the middle value of the first particle size range is substantially larger than the middle value of the second particle size range.
In one embodiment, the cavity of the mold is in the shape of a shoe body part, and the foam molding body is a shoe body part.
In one embodiment, before the foaming step, the method further comprises placing a shoe last sleeved with an upper on the mold, so that at least a portion of the upper contacts the semi-foamed particles, and the semi-foamed particles placed on the mold are distributed along the bottom of the shoe last.
In one embodiment, before the foaming step, the method further comprises spreading semi-foaming particles, which are the same as or different from the semi-foaming particles, between the upper and the last along the bottom of the last.
In one embodiment, the upper fitted over the last has a double-layered structure, and before the foaming step, the method of manufacturing the foamed molded body further includes laying semi-foamed particles, which are the same as or different from the semi-foamed particles, between an inner layer and an outer layer of the upper along the bottom of the last.
In one embodiment, in the disposing step, one or more film-like elements are further disposed partially in the mold to contact the semi-foamed particles, wherein the film-like elements comprise a material that can be heated by microwave.
In one embodiment, at least one of the membrane-like elements is a waterproof moisture-permeable membrane, and the method for manufacturing the foamed molded body further comprises coating at least a part of the foamed base material with the waterproof moisture-permeable membrane before the foaming step.
In one embodiment, at least one of the film-like elements has a pattern, and the foamed molded body formed after foaming has a logo pattern corresponding to the pattern.
In one embodiment, at least one of the film-like elements includes a foamable material or a material that can be heated by microwave to be partially melted and welded to another material, and is covered to define a covering space, and at least a portion of the foamed base material disposed in the mold is disposed in the covering space, wherein the covering space includes an extension section where the semi-foamed particles are not disposed, and wherein the foamed molded body has an extension portion formed by foaming the semi-foamed particles to fill the extension section.
According to another embodiment of the present invention, there is provided a foamed molded body produced by the above method, and wherein the insert member is pressed to be fixedly inserted into the foamed structure formed by foaming the semi-foamed particles and surface-press-welding the semi-foamed particles to each other.
According to yet another embodiment of the present invention, a footwear component made by the above method is provided. The shoe body part is a foaming forming body with the shape of the shoe body part, and the embedding element is extruded and fixedly embedded in a foaming structure formed by mutually extruding and welding the surfaces of the semi-foaming particles through foaming.
According to another embodiment of the present invention, there is provided a foamed molded body comprising a foamed structure formed by foaming a plurality of semi-foamed particles of Thermoplastic Polyurethane (TPU), and at least one inlay element which is a material or a finished product thereof that is not affected by microwaves. Wherein, the mosaic element is pressed and fixedly embedded in the foaming structure of which the surfaces are mutually pressed and welded by the foaming of the semi-foaming particles.
In one embodiment, the semi-foamed particles have a plurality of first particles with a first particle size range and a plurality of second particles with a second particle size range. The middle value of the first particle size range is substantially larger than the middle value of the second particle size range, and the hardness of the part formed by foaming the first particles is smaller than that of the part formed by foaming the second particles.
In one embodiment, the foam further comprises one or more film-like elements welded or bonded to the surfaces of the semi-foamed particles.
In one embodiment, at least one of the film-like elements is attached to the foam molding body in a pattern corresponding thereto.
In one embodiment, at least one of the membrane-like elements is a waterproof moisture-permeable membrane.
In one embodiment, at least one of the film-like elements covers the foam structure.
In one embodiment, the foamed molded body is a shoe body part having a shoe body part shape.
In one embodiment, the body member is bonded to at least a portion of an upper in a fused form.
Efficacy against the prior art:
according to the method for manufacturing a foamed molded body, the foamed molded body and the shoe body part provided by the embodiment of the invention, different from the general high-temperature injection molding, the inlaying of the inlaying element which has different properties with the main body of the foamed molded body and is not influenced by microwaves can be simultaneously carried out during the microwave foaming, and thus the foamed molded body which is provided with the inlaying element and is integrally molded with the whole structure can be obtained. Therefore, various embedded elements can be arranged in a simplified process in more ways, and the finished product has a more complete integrated appearance, so that the delicacy and the applicability of the foaming molded body are improved.
Drawings
Fig. 1 is a flowchart of a method of manufacturing a foamed molded body according to an embodiment of the present invention.
Fig. 2A to 2C are schematic views illustrating a foamed base material including an inlay element according to an embodiment of the present invention.
Fig. 2D is a schematic diagram of microwave heating foaming according to an embodiment of the present invention.
Fig. 2E is a schematic view of a foamed molded body produced by the method shown in fig. 2A to 2D.
Fig. 2F is a schematic view of a foamed molded body manufactured by a mold having a shape of a shoe body part according to an embodiment of the present invention.
FIG. 3A is a schematic view of a foamed base material including an inlay element according to another embodiment of the present invention.
Fig. 3B is a schematic view of microwave heating foaming according to another embodiment of the present invention.
FIG. 4A is a schematic view of a foamed base material including an inlay element according to another embodiment of the present invention.
Fig. 4B is a schematic view of microwave heating foaming according to another embodiment of the present invention.
Fig. 5A to 5D are schematic diagrams illustrating a foaming base material including an inlay element and semi-foaming particles with different particle size ranges according to another embodiment of the present invention.
Fig. 5E is a schematic view of microwave heating foaming according to another embodiment of the present invention.
Fig. 6 is a schematic view of a foamed molded body produced by the method shown in fig. 5A to 5E.
FIGS. 7A and 7B are schematic diagrams of a foaming base material including an inlay element and semi-foaming particles with different particle size ranges and heating and foaming by microwave according to still another embodiment of the present invention.
Fig. 8 is a schematic view of a foamed base material and a film-like member according to an embodiment of the invention.
Fig. 9 is a schematic view of a foamed molded body produced by heating foaming in a microwave manner with the configuration of fig. 8.
Fig. 10A to 10D are schematic views illustrating a foamed base material and a film-like member according to still another embodiment of the present invention.
FIG. 10E is a schematic view of microwave heating for foaming according to another embodiment of the present invention.
Fig. 11 is a schematic view of a foamed molded body produced by the method shown in fig. 10A to 10E.
Fig. 12A and 12B are schematic views illustrating the arrangement of the foamed base material and the footwear last and the upper according to another embodiment of the present invention.
Fig. 13 is a schematic view of the shoe body part produced by microwave heat foaming and the bonding of the shoe body part to the shoe upper of the arrangement of fig. 12A and 12B.
Fig. 14 is a schematic view illustrating the arrangement of the foamed base material and the footwear last and the upper according to the first modified embodiment of the present invention.
FIG. 15 is a schematic view of the arrangement of FIG. 14, with the insole and the upper bonded to the shoe body part produced by microwave heat foaming.
Fig. 16 is a schematic view illustrating the arrangement of a foamed base material and a footwear last and an upper according to a second variation of the present invention.
FIG. 17 is a schematic view of the arrangement of FIG. 16, with the insole and the upper bonded to the shoe body part produced by microwave heat foaming.
Description of the main element symbols:
10: method of producing a composite material
S100: setting step
S200: foaming step
r1, r2, r 3: block
r1 ', r2 ', r3 ': in part
h1, h2, h 3: hardness of
A1, a2, a1 ', a 2': segment of
100: die set
110: die cavity
120: upper cover
200. 200': foamed base material
205. 205': semi-foamed particles
210: first particles
220: second granule
300: microwave oven
400. 400', 400 ": foamed molded article
401. 402, a step of: particle boundary
450: extension part
500: partition board
510: base seat
600. 600': mosaic element
700: film-like element
710: pattern(s)
710': indicating pattern
720: cladding space
721: main body space
722: extension section
800: shoe last
805: shoe tree bottom
900: shoe upper
905. 915: foamed molded article
910: outer layer
920: inner layer
1000. 2000, 3000: shoes with air-permeable layer
Detailed Description
Various embodiments will be described hereinafter, and the spirit and principles of the invention will be readily understood by those skilled in the art by reference to the following description taken in conjunction with the accompanying drawings. However, while certain specific embodiments are specifically illustrated herein, these embodiments are merely exemplary and are not to be considered in all respects as limiting or exhaustive. Thus, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and principles of the invention.
Referring to fig. 1, a method 10 of manufacturing a foamed molded body according to an embodiment of the present invention includes a setting step S100 of setting a foamed base material, and a foaming step S200 of foaming the foamed base material. For example, referring to fig. 2A to 2C in conjunction with fig. 1, according to the method 10 of the present embodiment, in the setting step S100, the foamed base material 200 is first placed into the mold 100 that is not affected by microwaves (i.e., into the cavity 110 of the mold 100). In particular, it is not affected by microwaves, e.g. it is not heated by microwaves and can withstand ambient temperature increases due to microwave heating. In detail, a material that is too transparent and low-loss material is not easily penetrated by microwaves and cannot be absorbed, or a material that is completely opaque such as a metal conductor is not completely reflected and cannot be penetrated by microwaves, and such a material that cannot be heated by microwaves is a material that is not affected by microwaves without being denatured or changed (for example, foamed) due to temperature rise of other surrounding materials. In contrast, a high loss material that is sensitive to microwaves is a material that can be heated by absorbing microwaves, since the transparency is such that the microwaves are absorbed only after a certain distance. In addition, even if the microwave is not directly absorbed and heated, the material is affected by the microwave when the temperature is raised and the material is denatured or changed (for example, foamed) when the peripheral material absorbs the microwave.
As mentioned above, according to an embodiment of the present invention, the foaming base material 200 includes a plurality of semi-foaming particles 205 capable of being directly heated to foam in the microwave or being heated by other adjacently disposed materials to cause temperature increase to foam, and at least one inlay element 600 not affected by the microwave. For example, the semi-foamed particles 205 in the foamed base material 200 may be a high loss material that can be foamed by microwave heating. Alternatively, in the case where the semi-foamed particles 205 are materials that are difficult to heat by microwave, an additive that readily absorbs microwaves (e.g., Al) may be further added to the foamed base material 2002O3SiC, etc.) so that semi-foamed particles 205 can be foamed by the temperature increase caused by heating by the absorption of microwaves by the surrounding additives.
Here, the mold 100 that is not affected by the microwave may be, for example, the mold 100 made of a material that is affected by the microwave without temperature increase, and/or the mold 100 made of a material that can endure high temperature without deformation. Further, the mold 100 (the cavity 110 of the mold 100) may have various desired shapes to produce a foamed molded body having a desired shape, and may be an integrally molded member or assembled of a plurality of members.
According to some embodiments of the present invention, the semi-foamed particles 205 may be made of Polyurethane (PU), Thermoplastic Polyurethane (TPU), or thermoplastic elastomer (TPE), and may be particles of a certain size that have foaming ability and are formed after being foamed to a certain degree. Specifically, the semi-foamed particles 205 can be made of Polyurethane (PU), Thermoplastic Polyurethane (TPU) or thermoplastic elastomer (TPE) material by molding, adding a foaming agent, mixing, and performing incomplete foaming, and still have foaming ability. For example, semi-foamed particles 205 may be formed by semi-foaming a foamed thermoplastic polyurethane (i.e., a foamed Thermoplastic Polyurethane (TPU)). However, the present invention is not limited thereto, and the semi-expanded particles 205 may be particles prepared by any means to be expanded to some extent to have a particle form and still maintain the expansion capability.
In detail, according to the present embodiment, the semi-foamed particles 205 disposed in the mold 100 may include a plurality of first particles 210 having a first particle size range. Since the shape of the particles used in accordance with embodiments of the present invention may not be a regular sphere but rather a nearly spherical one, the particle size is defined as the maximum major axis length of the particle. In view of the above, in a preferred embodiment, the middle of the first particle size range is substantially equal to the average particle size of the first particles 210. However, due to process tolerances and the like, the plurality of first particles 210 may have a particle size difference therebetween, and the average particle size thereof is not necessarily equal to the intermediate value. The first particles 210 having substantially uniform particle diameters are merely examples. That is, according to other embodiments of the present invention, semi-foamed particles 205 may be configured to include various particles having different particle size ranges according to requirements and design, and will be further described below.
Accordingly, an inlay element 600 may be co-arranged with the semi-foamed particles 205 in the mold 100. For example, according to the present embodiment, in the setting step S100, as shown in fig. 2A and fig. 2B sequentially, the semi-foamed particles 205 may be placed to a certain degree, then at least one inlay element 600 is placed at a desired position, and then the semi-foamed particles 205 are continuously filled, so that the inlay element 600 is surrounded by the semi-foamed particles 205. Wherein the inlay element 600 may be made of a material that is not affected by microwaves. For example, the inlay element 600 may be made of a material that cannot be heated by microwave, and thus the inlay element 600 may retain its original properties and shape after microwave.
According to a preferred embodiment, referring to fig. 2C, the mold 100 may further include an upper cover 120, and after the foaming base material 200 is placed as shown in fig. 2A and 2B, the upper cover 120 may be disposed on the mold 100 to define a space in which the foaming base material 200 can be foamed.
Next, referring to fig. 2D together with fig. 1 and fig. 2A to 2C, according to the method 10 of the present embodiment, the foaming step S200 includes heating the mold 100 by microwave, so that the semi-foaming particles 205 in the mold 100 are subjected to microwave action to generate temperature rise for foaming and mutual extrusion. That is, the mold 100 and the foamed base material 200 including the semi-foamed particles 205 (i.e., the first particles 210) and the inlay element 600 described above therein may be heated together by the microwaves 300. Thus, the semi-foamed particles 205 can be foamed (e.g., due to microwave induced temperature increase or temperature increase of surrounding materials such as additives), and the inlay element 600 is not affected by the microwave, e.g., is not foamed by microwave heating. As a result, referring to FIG. 2E, the foamed particles 205 can be fused by pressing the surfaces of the foamed particles to each other, so that the insert 600 is pressed and fixed. Therefore, the foam molding 400 with the embedded element 600 embedded therein can be formed after cooling and demolding. Wherein the foamed molded body 400 is not scattered and fragmented, and the whole appearance is an integrated object. Meanwhile, the insert element 600 may be inserted as a different material in the integrally formed foam molding 400 while maintaining its original shape and functional properties. That is, the insert element 600 can be pressed and fixedly embedded in the foaming structure formed by the foaming of the semi-foaming particles 205 and the surface of the semi-foaming particles being pressed and welded together.
According to some embodiments of the present invention, the damascene element 600 may comprise a chip, a metal sheet, or any object made of a material that has no polarity and cannot be heated by microwave or other materials that are not affected by microwave, and may be used as a decoration or a functional component in the finished foam molding 400. For example, according to some embodiments of the present invention, damascene element 600 may be a GPS tracking wafer. Therefore, the instant trace of the object having the article made of the foamed molded body 400 can be tracked.
Accordingly, the foamed molded article 400 may have various shapes depending on the shape of the mold 100 used in the setting step S100, and may be manufactured into various products. For example, the foamed molded article can be used as a shoe body member. For example, referring to fig. 2F, according to the method of manufacturing a foamed molded body according to another embodiment of the present invention, the cavity 110 of the mold 100 has a shape of a shoe body part. Therefore, after performing the setting step S100 and the foaming step S200 similarly to the above, the foamed molded body 400' may have a shoe body part shape (e.g., a midsole, an outsole, or an insole) as a shoe body part including the inlay element 600. That is, the shoe body part is a foamed molded body 400' having a shoe body part shape, and the insert element 600 is pressed and fixedly inserted into the foamed structure in which the surfaces of the semi-foamed particles 205 are pressed and welded to each other.
As described above, according to one embodiment, damascene element 600 may be a GPS tracking wafer. Therefore, in this case, the real-time trace of the sports competitor wearing the shoe body part made of the foamed molded body 400' or the subject having the self-care ability disorder can be tracked.
Next, another embodiment of providing the foaming base material 200 and performing foaming by microwave according to the present invention will be described with reference to fig. 3A and 3B.
Specifically, referring to fig. 3A, in order to exactly set the inlay element 600 at the desired position, one or more positioning elements, such as the base 510, may be used to place the inlay element 600 in the setting step S100, and the base 510 where the inlay element 600 is placed in the mold 100 to be aligned with the semi-foaming particles 205. Thereby, the inlay element 600 is positioned by the positioning element. Here, the positioning element, such as base 510, may be made of a semi-foamed material similar to semi-foamed particles 205. Therefore, the positioning element does not need to be taken out before the foaming step S200, and can be heated together with the semi-foamed particles 205 in the foaming step S200 shown in fig. 3B by microwave heating to perform foaming.
As described above, the setting of inlay element 600 in setting step S100 may take various forms, for example, base 510 may be used as a positioning element. In addition, referring to fig. 4A and 4B, according to other embodiments of the present invention, one or more spacers 500 may be used as positioning elements to position the inlay element 600 in the setting step S100, and the spacers 500 may be made of semi-foaming material similar to the semi-foaming particles 205. Therefore, the partitions 500 do not need to be taken out before the foaming step S200, and can be heated together with the semi-foamed particles 205 in the foaming step S200 by microwave to perform foaming (for example, foaming due to self-temperature increase caused by microwave or temperature increase caused by surrounding materials such as additives). Thus, the partition 500 is welded to the surfaces of the semi-foamed particles 205 to form a foamed molded body embedded with the insert 600.
As mentioned above, in the setting step S100, the inlay element 600 can be set without a positioning element or with various positioning elements. That is, the method of directly embedding the damascene element 600 or embedding the damascene element 600 by using the pedestal 510 or the spacer 500 is only an example, and according to various embodiments, the damascene element 600 may be embedded by other methods than the above.
Further, the mold 100 may be additionally divided into different blocks by a partition 500 similar to that described above with reference to fig. 4A and 4B. For example, as shown in fig. 5A to 5E, the cavity 110 of the mold 100 may be divided into different blocks r1, r2 and r3 by the partition board 500. Then, a plurality of first granules 210 having a first particle size range and a plurality of second granules 220 having a second particle size range are respectively placed in different blocks r1, r2 and r3 of the mold 100 partitioned by the partitions 500. That is, semi-foamed particles 205 may comprise: the first particles 210 having a first particle size range and the second particles 220 having a second particle size range, and the first particles 210 and the second particles 220 may be separately disposed in different blocks.
In this way, according to the present embodiment, the median value of the first particle size range is substantially larger than the median value of the second particle size range. That is, the first particles 210 are substantially larger than the second particles 220. In a preferred embodiment, the middle of the first particle size range is substantially equal to the average particle size of the first particles 210, and the middle of the second particle size range is substantially equal to the average particle size of the second particles 220. However, due to process tolerance, etc., there may be a difference in particle size between the plurality of first particles 210 or between the plurality of second particles 220, and the average particle size thereof is not necessarily equal to the intermediate value.
As described above, the first particles 210 and the second particles 220 with different sizes may be respectively disposed in different regions of the mold 100. For example, the first granules 210 may be disposed in the block r1 and the block r3, and the second granules 220 may be disposed in the block r 2. However, the above are merely examples, and the mold 100 may be divided into a plurality of different blocks in other forms, and the first particles 210 and the second particles 220 may be respectively disposed in different blocks. In addition, according to other embodiments of the present invention, it is also possible to further include other particles with different particle size ranges according to the above principle, and the particles are separately arranged in different blocks from the first particles 210 and the second particles 220, and the present invention is not limited thereto.
After the foaming base material 200 is disposed as shown in fig. 5A to 5B in sequence as described above, the foaming step S200 may be performed. As shown in fig. 5C, the partition 500 may be removed before the foaming step S200, and then as shown in fig. 5D and 5E, the upper cover 120 is covered and heated by microwave to perform the foaming step S200 (for example, foaming due to self-temperature increase caused by microwave or temperature increase caused by surrounding materials such as additives). Thus, the surfaces of the semi-foamed particles 205 are welded to each other, and the foamed molded body 400 in which the insert 600 is embedded is integrally molded as shown in fig. 6. However, if the partition board 500 is made of a semi-foaming material similar to the semi-foaming particles 205, the partition boards 500 may not be taken out before the foaming step S200, and may be heated together with the semi-foaming particles 205 in the foaming step S200 in a microwave manner for foaming (for example, foaming due to self-temperature increase caused by microwave or temperature increase caused by surrounding materials such as additives). Thus, the partition 500 and the surfaces of the semi-foamed particles 205 can be welded together to form the foam molding 400 embedded with the insert 600 as shown in fig. 6.
Here, referring to fig. 6, the half foamed particles 205 corresponding to the section r1 where the first particles 210 were originally disposed are formed as the first portion r1 ' of the foamed molded body 400, the half foamed particles 205 corresponding to the section r2 where the second particles 220 were originally disposed are formed as the second portion r2 ' of the foamed molded body 400, and the half foamed particles 205 corresponding to the section r3 where the first particles 210 were originally disposed are formed as the third portion r3 ' of the foamed molded body 400. In summary, the second portion r2 ' formed by the smaller second granules 220 has a higher density relative to the first and third portions r1 ' and r3 ' formed by the larger first granules 210. Thus, the second portion r2 ' may have a higher stiffness relative to the first and third portions r1 ', r3 '. In particular, the hardness h2 of the second portion r2 ' may be higher than the hardness h1 of the first portion r1 ' and the hardness h3 of the third portion r3 '. That is, the hardness of the portion formed by foaming the first particles 210 is lower than the hardness of the portion formed by foaming the second particles 220. In addition, although only the first particles 210 and the second particles 220 are used to form the foam molding 400 inlaid with the inlay element 600 having two different hardnesses or softness, according to other embodiments of the present invention, when it is expected that each portion of the foam molding 400 should have more than three hardnesses or softness, other particles having other particle size ranges may be added according to the above principle, and the present invention is not limited thereto.
Further, according to some embodiments of the present invention, referring to fig. 6, particle boundaries formed by fusion-bonding surfaces of the semi-expanded particles 205 to each other can be seen in the completed foamed molded body 400. For example, particle boundaries 401 in the first and third portions r1 ' and r3 ' formed by the foaming of the first particles 210 can be observed, and particle boundaries 402 in the second portion r2 ' formed by the foaming of the second particles 220 can be observed. Accordingly, the density of the particle boundary 401 of the portion formed by foaming the first particles 210 may be lower than the density of the particle boundary 402 of the portion formed by foaming the second particles 220. In addition, according to some embodiments of the present invention, the particle boundaries of the foamed molded body 400 may be difficult to be distinguished by the naked eye, or even the degree of surface fusion to each other after foaming is high to eliminate the particle boundaries. Accordingly, the above description of particle interfaces is merely exemplary, and the invention is not limited thereto.
As described above, the hardness or softness of each portion of the foam molding 400 in which the insert element 600 is embedded may be configured according to the requirements and design. For example, when the foamed molded body 400' of the footwear body component as shown in fig. 2F is formed in the above-described manner, the stiffness or softness can be controlled based on factors such as the comfort of the foot of the intended wearer. For example, softer portions of the resulting footwear component (e.g., midsole, outsole, or sockliner) may be made to correspond to portions of the wearer's ball that are expected to contact the footwear for increased comfort of wear, and harder portions may be made to correspond to portions of the wearer's ball that are not expected to contact the footwear for increased support. However, the above are only examples, and the present invention is not limited thereto.
In addition, the manner of providing the foamed base material 200 in the above embodiments may be variously combined and changed without conflicting with each other. For example, referring to fig. 7A and 7B, the insert 600 may be placed on the base 510 in a manner similar to that of fig. 3A and 3B, and the partition 500 (and optionally the partition 500 may not be removed) and the particles with different particle size ranges may be disposed in a manner similar to that of fig. 5A to 5E to foam the foam molding body 400 embedded with the insert 600. However, this is merely an example, and other combinations and variations are possible according to different embodiments of the present invention.
Further, according to other embodiments of the present invention, one or more film-like elements 700 may also be locally disposed in the mold 100 in the disposing step S100 to contact with the semi-foamed particles 205 (e.g., the first particles 210 and/or the second particles 220). The membrane-like element 700 may be made of a material that can be heated by microwave, for example. For example, the membrane-like element 700 may comprise a material similar to the semi-foamed particles 205 or may be bonded to the semi-foamed particles 205 after microwaving. For example, the membrane-like element 700 may comprise PU, TPU, or TPE. Thus, after microwaving, the film-like elements 700 can adhere to the foamed semi-foamed particles 205.
For example, referring to fig. 8, in addition to the above-mentioned semi-foamed particles 205 and the damascene element 600, a film-like element 700 having a pattern 710 may be further disposed in the mold 100 in the disposing step S100. Here, for convenience of illustration, the mold 100 of fig. 8 is transparent, and the walls of the mold 100 defining the cavity 110 are so thin as to be ignored.
As described above, referring to fig. 9, after the foaming step S200, the film-like member 700 itself and the surfaces of the semi-foamed particles 205 are welded to each other to form the integrally formed foamed molded body 400, and the pattern 710 originally on the film-like member 700 is correspondingly attached to the foamed molded body 400 (the appearance of the foamed molded body 400 is like the "printed" pattern 710). That is, the foamed molded body 400 formed after foaming has the indication pattern 710' corresponding to the pattern 710. For example, the indication pattern 710' may be a mark or a description for indicating the kind of the internal inlay element 600, or may be any decoration pattern. In detail, according to an embodiment, the film-like member 700 may be a non-foaming material, and may be a material having the same or similar properties as Thermoplastic Polyurethane (TPU). Thus, the surface of film-like member 700 is only slightly melted when it is heated by microwaves, thereby forming an adhesive force with the semi-foamed material (e.g., semi-foamed particles 205) when it is squeezed by the microwave post-foaming. In this case, since the film-like member 700 is not foamed, the film-like member 700 is not deformed, and the original position of the pattern 710 is not changed or affected. Thus, the indication pattern 710' corresponding to the pattern 710 can be formed after the foaming step S200. Furthermore, according to another embodiment, the membrane-like element 700 may be a non-foamed material and may not be a material of the same or similar nature as the Thermoplastic Polyurethane (TPU). Therefore, there is no melting of the surface of the film-like member 700 (e.g., cling film) when heated by microwave. In this case, when the film-like member 700 and the semi-foamed material (e.g., the semi-foamed particles 205) are foamed and extruded by the microwave, the semi-foamed material can be coated and positioned even though the firm adhesion is not easily achieved, so that the original position of the pattern 710 is not changed or affected. Thus, the indication pattern 710' corresponding to the pattern 710 can be formed after the foaming step S200. However, the above are only examples, and the present invention is not limited thereto.
According to still another embodiment of the present invention, at least one of the membrane-like elements 700 may be a waterproof moisture-permeable membrane (not shown in the drawings). Specifically, the waterproof moisture-permeable film can help to discharge sweat of a human body in the form of water vapor and can help to isolate the permeation of external water liquid. For example, the waterproof moisture-permeable film may have a waterproof capacity of 1000-2Moisture permeability of 24hr or more. However, the above are merely examples, and the waterproof moisture-permeable film may be designed to have various degrees of waterproof ability and moisture permeability according to the needs and expectations.
As mentioned above, according to an embodiment of the present invention, the waterproof moisture-permeable film may include or may be made of a material that can be heated by microwave, and may, for example, include a material having properties similar to those of the semi-foamed particles 205. For example, the waterproof moisture-permeable film may comprise Polyurethane (PU), Thermoplastic Polyurethane (TPU), or thermoplastic elastomer (TPE), which are not foamed or have negligible foaming ability. As described above, at least a part of the foamed base material 200 may be further coated with a waterproof moisture-permeable film before the foaming step S200. Therefore, the waterproof moisture-permeable film can be welded or coated and fixed to at least a part of the surface of the formed foamed molded article 400 after the foaming step S200 due to the commonality with the material of the semi-foamed particles 205. That is, at least a part of the foamed molded body 400 may be insulated or coated with the waterproof moisture-permeable films that are welded to each other and substantially maintain the original properties or the original structure, thereby improving the waterproof moisture-permeable ability of at least a part of the formed foamed molded body 400.
In addition, according to still another embodiment of the present invention, at least one of the film-like elements 700 may contain a foamable material that can be foamed by heating in a microwave manner. Thereby, various detailed structures or shapes of the foamed molded body 400 can be formed according to the intended design.
Specifically, referring to fig. 10A to 10E, at least one of the film-like elements 700 may include a foamable material or a material that may be heated in a microwave manner to be partially melted to weld other materials, and may cover and define the covering space 720. As shown in fig. 10A to 10B, the foaming base material 200 including the inlay element 600 and the semi-foaming particles 205 may be disposed in the coating space 720 defined by the film-like member 700. Next, as sequentially shown in fig. 10C and 10D, the film-like member 700 may be closed and the closed film-like member 700 with the foaming base material 200 inside may be set in the mold 100, and the mold 100 may be capped with the upper cap 120 in preparation for foaming. As mentioned above, when the disposing step S100 is completed, the covering space 720 may include a main space 721 in which the semi-foamed particles 205 are disposed and an extending section 722 in which the semi-foamed particles 205 are not disposed.
Next, referring to fig. 10E together with fig. 10A to 10D, when the above configuration is performed in the foaming step S200, the semi-foamed particles 205 are foamed and expanded along the covering space 720 defined by the film-like member 700, and thus a part of the foamed and expanded semi-foamed particles 205 extend to fill the extension section 722. Thus, referring to fig. 11, the unevenness of the shape of the foamed molded body 400 ″ that may be caused by the insertion of the insert element 600 may be reduced and the fineness of the foamed molded body 400 ″ may be improved by the film-like member 700.
In detail, as shown in fig. 10A to 11, when the insert element 600 is inserted directly or through other auxiliary positioning elements, the vertical section a1 (indicated by a dotted line) where the insert element 600 is disposed may have a different number of semi-foamed particles 205 than the adjacent vertical section a2 (indicated by a dotted line), and may cause non-uniformity in the shape of the foamed structure. As described above, according to the present embodiment, the desired shape can be defined by the film-like member 700 to reduce the possibility of such unevenness, thereby completing the desired shape of the foamed molded body 400 ″. For example, as shown in fig. 11, the sections a1 'and a 2' (indicated by dotted lines) of the foamed molded body 400 ″ may have substantially the same height.
In addition, as shown in fig. 11, the finished foamed molded body 400 ″ may have an extended portion 450 formed by foaming the semi-foamed particles 205 to fill the extended region 722. That is, the desired details or shape can be produced by the configuration of the membrane-like element 700. For example, flanges (extensions 450) slightly protruding from both side edges of the foam molded body 400 ″ may be formed. The flanges may serve as both side flanges of the footwear body member, thereby improving the coupling strength of the footwear body member to other parts of the footwear, such as the upper, or enhancing the protective strength of the footwear body on both sides of the foot. However, the above is merely an example, and the present invention is not limited to the shape of the covering space 720 and the shape of the resulting foamed molded body 400 ″ shown here.
As described above, since the method of manufacturing a foamed molded body and the foamed molded body manufactured according to the present invention can be used to manufacture a shoe body part, according to other embodiments of the present invention, the foamed molded body (i.e., the shoe body part) can be further connected to or manufactured into other portions of the shoe body while being completed. Therefore, the process can be further simplified and the preparation time or cost can be reduced.
Specifically, referring to fig. 12A and 12B, similar to fig. 2F, the cavity 110 of the mold 100 may have a shape of a shoe body part. In this regard, before the foaming step S200, a last 800 covered with the upper 900 may be further disposed on the mold 100. Here, the disposition of the shoe tree 800 on the mold 100 is a relative concept, and is not limited to the disposition of the shoe tree 800 above the mold 100 defined by the direction of gravity. For example, as shown in fig. 12A, after disposing step S100 to dispose foamed base material 200 including semi-foamed particles 205 and inlay element 600 in mold 100, last 800 covered with upper 900 may be disposed on mold 100 (i.e., above in the direction of gravity). Alternatively, as shown in fig. 12B, a last 800 covered with upper 900 may be first placed on mold 100 (i.e., under gravity), and a cavity 110 for placing foamed base material 200 may be defined by mold 100 and a last bottom 805 of last 800 covered with upper 900. Next, foamed base material 200, including semi-foamed particles 205 and insert 600, is placed in mold 100 and carried by last bottom 805 of last 800 over which upper 900 is placed.
As described above, as shown in fig. 12A and 12B, before the foaming step S200, a last 800 sleeved with the upper 900 may be further disposed on the mold 100, such that at least a portion of the upper 900 contacts the semi-foaming particles 205, and the semi-foaming particles 205 disposed on the mold 100 are distributed along a last bottom 805 of the last 800. Therefore, when semi-foamed particles 205 are foamed by heating in a microwave manner in a fixed space subsequent to foaming step S200, semi-foamed particles 205 can be fused to each other by foaming and simultaneously bonded to upper 900 along last bottom 805 of last 800. That is, semi-foamed particles 205 may form an integrally formed shoe body part (i.e., foamed molded body 400') adhered to upper 900 at last bottom 805 corresponding to last 800. Therefore, after the foaming step S200, the shoe 1000 combining the upper 900 and the shoe body part with the insert element 600 as shown in fig. 13 can be formed by removing the last 800 without additionally performing a process of bonding the shoe body part and the upper 900 after forming the shoe body part.
In order to form the footwear body components while more smoothly adhering to upper 900, according to some embodiments of the present invention, upper 900 may include PU, TPU, or TPE, which do not foam or have negligible foaming. For example, upper 900 may be woven from yarns of PU, TPU, or TPE. However, the present invention is not limited thereto as long as it can be bonded with a shoe body part (i.e., the foamed molded body 400').
In addition, although not shown in the drawings, according to another embodiment of the present invention, an outsole material or an outsole may be laid on the semi-foamed particles 205 before the foaming step S200. For example, the outsole material or outsole may be laid on the semi-foamed particles 205 only under the condition that the shoe tree 800 and the upper 900 are not provided, or on the other side of the semi-foamed particles 205 opposite to the shoe tree 800 and the upper 900 under the condition that the shoe tree 800 and the upper 900 are provided. In addition, when the outsole material or outsole is scattered and not completely laid on one surface of the entire foam base material 200, the outsole material or outsole may be laid on the surface of the foam base material 200 according to a pattern expected to be presented by the outsole. In this way, in the foaming step S200, the outsole, the foamed molded article 400 '(for example, the foamed molded article 400' as the midsole), and the upper 900 having the surfaces welded to each other can be selectively formed at the same time.
According to some embodiments of the present invention, in order to allow the shoe body part (i.e., the foamed molded body 400') to be more smoothly bonded to the outsole or outsole material while being formed, the outsole or outsole material may include PU, TPU, or TPE, which are not foamed or have negligible foaming capacity. However, the present invention is not limited thereto, as it can be bonded with the shoe body part (i.e., the foamed molded body 400').
Next, a first variation of the above-described embodiment based on the setup last 800 will be described with continued reference to fig. 14 and 15. Specifically, referring to fig. 14, when the shoe tree 800 sleeved with the upper 900 is disposed, before the foaming step S200, the step of additionally spreading semi-foamed particles 205' identical to or different from the semi-foamed particles 205 disposed in the mold 100 between the upper 900 and the shoe tree 800 along the bottom 805 of the shoe tree 800 may be further included. That is, foamed base material 200 'including semi-foamed particles 205' may be additionally distributed between upper 900 and last 800 along last bottom 805 of last 800. Therefore, the semi-foamed particles 205' are also heated by microwave to be foamed in the foaming step S200 (for example, due to the self-temperature increase caused by microwave or the temperature increase caused by surrounding materials such as additives). As shown in fig. 15, the foamed semi-expanded beads 205 'may be separately formed into an integrally molded foamed molded body 905 from the foamed molded body 400'.
As shown in fig. 14, according to some embodiments, the foamed base material 200 'may also include an inlay element 600' in a manner similar to the principles and manners described above. In this case, the formed foam molding 905 may be inlaid with the inlay element 600'.
According to an embodiment, the foam molding 905 may be an insole of the shoe 2000 formed after the foaming step S200 is performed in the configuration of fig. 14. That is, the shoe body part (i.e., the foaming molded body 400 ') inlaid with the inlay element 600, the footwear insole (i.e., the foaming molded body 905) optionally inlaid with the inlay element 600 ' may be simultaneously formed and bonded to the shoe body part (i.e., the foaming molded body 400 ') and the upper 900 through a single foaming step S200.
According to some embodiments of the present invention, inlay element 600' may be the same or different item that is not affected by microwaves than inlay element 600. For example, in the case of an insole, the inlay element 600' may be a chip for measuring blood pressure, body fat, or for pacing. However, the above is merely an example, and the present invention is not limited thereto.
In addition, a second variation of the above-described embodiment based on the setup shoe tree 800 will be described hereinafter with reference to fig. 16 and 17. In the second variation, the shoe tree 800 may be covered with the double upper 900, and the foamed molded body may be further formed between the double upper 900. In detail, referring to fig. 16, an upper 900 fitted over a last 800 has a double-layered structure including an outer layer 910 and an inner layer 920. Further, similar to the first variation described above with reference to fig. 14 and 15, before the foaming step S200, semi-foamed particles 205' that are the same as or different from the semi-foamed particles 205 disposed in the mold 100 may be additionally distributed and laid between the inner layer 920 and the outer layer 910 of the upper 900 along the bottom 805 of the last 800. That is, foamed base material 200 'including semi-foamed particles 205' may be additionally distributed between inner layer 920 and outer layer 910 of upper 900 along last bottom 805 of last 800. Therefore, the semi-foamed particles 205' are also heated by microwave to be foamed in the foaming step S200 (for example, due to the self-temperature increase caused by microwave or the temperature increase caused by surrounding materials such as additives). As shown in fig. 17, the above-mentioned foamed semi-expanded beads 205 'may be additionally formed separately from the foamed molded article 400' into an integrally molded foamed molded article 915.
As shown in fig. 16, according to some embodiments, the foamed base material 200 'may also include an inlay element 600' in a manner similar to the principles and manners described above. In this case, the formed foam molding 915 may be embedded with the insert 600'. The details of inlay device 600' are the same as or similar to those described above with reference to fig. 14 and 15, and will not be repeated herein.
According to an embodiment, the foamed molded body 915 may be an insole or a filler of the shoe 3000 formed after the foaming step S200 is performed in the configuration of fig. 16. That is, the shoe body part (i.e., the foaming molded body 400 ') inlaid with the inlay element 600, the insole or the filler (i.e., the foaming molded body 915) optionally inlaid with the inlay element 600 ' may be simultaneously formed and bonded to the shoe body part (i.e., the foaming molded body 400 ') and the upper 900 through a single foaming step S200.
Further, although not shown in the drawings, based on the third variation of the above-described embodiment in which the footwear last 800 is provided, the foamed molded body 905 or 915 may be directly formed according to the above-described principle without forming the foamed molded body 400 ', and the insert member 600' may be provided inside thereof accordingly. Alternatively, based on the fourth variation of the above-described embodiment of the installation of the footwear last 800, the foamed molded body 905 and the foamed molded body 915 may be directly formed at the same time according to the above principle without forming the foamed molded body 400 ', and the insert element 600' may be installed in at least one interior thereof accordingly. Alternatively, based on the fifth variation of the above-described embodiment for installing the shoe tree 800, the foam molding 400 ', the foam molding 905 and the foam molding 915 may be formed at the same time, and the insert 600 and/or 600' may be installed in at least one of the foam molding, the foam molding 905 and the foam molding 915. Accordingly, various modifications may be made by those skilled in the art in light of the above teachings.
Further, although not shown in the drawings, a waterproof moisture-permeable membrane as described above may also be applied in the embodiment in which the footwear last 800 and the upper 900 are provided. Specifically, the waterproof moisture-permeable film may cover a portion of the foamed base material 200 and a portion of the upper 900 at the same time, and may be bonded to the formed shoe body part (i.e., the foamed molded body 400 ') and the upper 900 after the foaming step S200, so as to provide the portion of the shoe body part (i.e., the foamed molded body 400') and the portion of the upper 900 with waterproof moisture-permeable capability. Similarly, the waterproof moisture-permeable film can also be applied to other foamed molded bodies formed together as described above, and will not be described in detail herein.
In summary, according to the embodiments of the present invention, the foamed molded body or the shoe body part with the inlay element can be completed in an integrated process by setting the conditions of the relatively cheap and simple microwave heating process. In detail, compared to the conventional injection molding process, the microwave heating process performed according to the embodiments of the present invention can shorten the process time and save energy because the base material does not need to be melted at a high temperature, thereby greatly reducing the production cost. Furthermore, microwave heating enables the heating object to heat from the inside to the whole body in a short time, compared with the existing outside-in heating mode, the microwave heating method is rapid and uniform in heating, so that the homogeneity of the finally produced product can be improved, and the microstructure is not easy to damage and can be kept with the optimized microstructure and the corresponding functional properties. Therefore, the performance and yield of the manufactured product can be improved, and the manufactured foaming molded body or the shoe body part can have the required embedded element, detailed structure, shape or property. This can improve or improve the applicability and usability of the foamed molded article.
What has been described above are merely some of the preferred embodiments of the present invention. It should be noted that various changes and modifications can be made in the present invention without departing from the spirit and principle of the invention. It will be understood by those skilled in the art that the present invention is defined by the appended claims and that various changes in form, combination, modification and alteration may be made without departing from the spirit and scope of the invention as defined by the appended claims.
