TWM584614U - Composite sole - Google Patents

Abstract

A composite shoe sole includes a rubber base material, a composite cloth material, and a PU foam layer. The composite cloth material includes a non-woven fabric layer and a hot-melt adhesive layer, and the hot-melt adhesive layer includes short fibers, hot-melt adhesive, and hot-melt adhesive. Part of the hot-melt penetration is combined in the rubber base material, and the hot-melt adhesive is partially bonded to the non-woven fabric layer, so that a part of the plurality of short fibers is exposed and the hot-melt adhesive is partially bonded to the non-woven fabric layer, and the part of the PU foamed layer is The short fibers covered with the hot-melt adhesive layer and the PU foam layer are combined on the surface of the non-woven fabric layer, so that it becomes a new type of composite sole, which is different from the traditional artificial gluing and sanding combined sole.

Description

Compound sole

This creation is about a sole, especially a composite sole made from several materials.

The role of shoes is mainly to protect your feet and keep warm. You can subdivide various types of shoes according to the use. Most of the various types of shoes that have evolved today are designed to match clothing and activities, and become a unique culture and trend. One of the indicators.

The composition of shoes generally includes soles (midsoles, outsoles), uppers, insoles and other parts. Among them, the soles are used as a stable support between the wearer and the ground, and the reaction force buffers and returns from the ground. Ammunition equivalent. Commonly used in shoe outsoles or midsoles are rubber, PU (Polyurethanes, polyurethane), EVA (Ethylene Vinyl Acetate, ethylene vinyl acetate copolymer) and other material types.

At present, the combination method between the midsole and the outsole requires manual grinding and gluing to complete the combination of the midsole and the sole. For the current demand for mechanical automation to improve the assembly efficiency of the industry, it is Very inconvenient.

In addition, the aforementioned common materials have their own advantages and disadvantages when applied to the sole. For example, although the aforementioned rubber sole has good support and durability for the foot, it is due to weight factors, poor shock absorption and poor elasticity. As a result, the reaction force of the ground is quickly and directly transmitted to the feet, so the wearing feeling is stiff and not everyone can adapt today. According to the assembly of the midsole and the sole mentioned above, and the sole of a single material has its problems, currently in the related industry, one of the problems of actively improving the manufacture and use of shoes is one of the problems.

This creative composite sole provides a new type of composite shoe sole that does not require the use of conventional manual gluing and sanding to complete the sole, but also combines the two materials of rubber and PU.

A composite shoe sole includes a rubber sole material, a composite cloth material, and a PU foam layer, wherein: the rubber sole material has a top surface; and the composite cloth material includes a non-woven fabric layer and a hot-melt adhesive layer. The hot-melt adhesive layer includes a plurality of short fibers and a hot-melt adhesive. The hot-melt adhesive is partially melt-infiltrated into the top surface of the rubber base material, and the hot-melt adhesive is partially melt-infiltrated into the non-woven fabric layer. Parts of the plurality of short fibers are exposed and bonded to the non-woven fabric layer by the hot-melt adhesive; part of the PU foamed layer is short fibers covering the hot-melt adhesive layer, and part of the PU foamed layer is bonded to the non-woven fabric layer surface.

The composite shoe soles shown in the first to third figures include a rubber sole material 1, a composite cloth material 3, and a PU foam layer 61, wherein: the rubber sole material 1 has a top surface; the composite cloth material 3, It includes a non-woven fabric layer 31 and a hot-melt adhesive layer 32, and the hot-melt adhesive layer 32 includes a plurality of short fibers 321 and a hot-melt adhesive 322, and a part of the hot-melt adhesive 322 is thermally fused and bonded to the rubber base material 1. The top surface, and the hot-melt adhesive 322 part is hot-melt penetrated and bonded to the non-woven fabric layer 31, so that a part of the plurality of short fibers 321 is exposed and partially bonded to the non-woven fabric 31 by the hot-melt adhesive 322; the PU foamed layer 61 Part of the short fiber 321 covering the hot-melt adhesive layer 32 and part of the PU foamed layer 61 are bonded to the surface of the non-woven fabric layer 31.

This creative composite shoe sole 1 is produced through a heating step, a vulcanization step, a pouring step, and a baking step. The manufacturing process is as follows:

1. The rubber base material 1 is placed in a synthetic cavity of a synthetic mold, and the synthetic mold is heated to 150 ° C to 160 ° C, and the heating time is 10 seconds to 15 seconds.

2. Open the aforementioned synthetic mold and place a composite cloth material 3 on the top surface of the rubber base material 1. The composite cloth material 3 includes a non-woven fabric layer 31 and a hot-melt adhesive layer 32, and the hot-melt adhesive layer 32 includes The short fibers 321 and the hot-melt adhesive 322 covering the short fibers 321 are put into the vulcanizing machine and vulcanized for 250 seconds to 350 seconds, so that the hot-melt adhesive layer 32 of the composite cloth material 3 is partially melt-melted and bonded to the rubber. The top surface of the base material 1 and a part of the hot-melt adhesive layer 32 are thermally fused and bonded to the non-woven fabric layer 31, so that a part of the short fibers 321 is exposed and a part of the hot-melt adhesive 322 is bonded to the non-woven fabric layer 31. A semi-finished compound sole.

3. In the pouring step, the semi-finished product of the composite shoe sole is placed in the pouring cavity of the pouring mold, and the PU is poured into the pouring cavity and stacked on the surface of the composite cloth 3, and the pouring mold is left to stand until the PU foams, and Part of the PU short fibers 321 covering the hot-melt adhesive layer 32 and part of the PU are bonded to the surface of the nonwoven fabric layer 31.

4. Put the aforementioned infusion mold into the oven and bake at 50 ° C to 70 ° C for 6 minutes to 7 minutes, so that the PU is cured to become a flexible PU foam layer 61, and a PU foam layer 61 and a composite fabric are prepared. Material 3 and rubber sole 1.

Through the above-mentioned description of the manufacturing process, the combination of the original rubber base material 1 and the composite cloth material 3 is mainly caused by the hot melt adhesive 322 on the composite cloth material 3 due to heat melting and penetration, so that the nonwoven fabric layer 31 is bonded to the rubber. The base material 1 and the short fibers 321 are adhered to the non-woven fabric layer 31 through the hot-melt adhesive 322, so that the short fibers 321 can be partially exposed, which helps the PU foam layer 61 to cover the short fibers 321 with the subsequent PU infusion. The combination, and the PU foam layer 61 combined with the non-woven fabric layer 31, so the composite cloth material 3 of this creation can provide a combination of different materials from the rubber base material 1 and the PU foam layer 61 respectively. It is not necessary to combine artificial sanding and gluing in the past to quickly complete the composition of soles of different materials.

Further explain the technical characteristics of the details of the composite shoe sole of this creation, wherein the thickness of the composite cloth material 3 before the rubber base material 1 is laid is 0.8 ㎜ to 1.5 ㎜.

The hot-melt adhesive 322 of the composite fabric 3 is latex, and the short fiber 321 is polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or Polytrimethylene Terephthalate (PTT).

Please refer to the fourth figure, which is another embodiment of the composite shoe sole, which is different from the above embodiment in that the PU foam layer 61 is covered with the cushioning accessory 8 and is located at the rear end position of the composite sole, and the cushioning accessory 8 The coefficient of elasticity is different from that of the PU foamed layer 61.

1‧‧‧ rubber base

3‧‧‧ composite cloth

31‧‧‧Non-woven layer

32‧‧‧Hot Melt Adhesive Layer

321‧‧‧ staple fiber

322‧‧‧Hot Melt Adhesive

61‧‧‧PU foam layer

8‧‧‧ buffer accessories

The first picture is an exploded perspective view of the composite shoe sole.
The second picture is a three-dimensional schematic view of the composite sole of this creation.
The third figure is a schematic sectional view of the second figure.
The fourth figure is a schematic cross-sectional view of another composite shoe sole with cushioning accessories.

Claims (4)

A composite shoe sole includes a rubber sole material, a composite cloth material, and a PU foam layer, wherein: the rubber sole material has a top surface; and the composite cloth material includes a non-woven fabric layer and a hot-melt adhesive layer. The hot-melt adhesive layer includes a plurality of short fibers and a hot-melt adhesive. The hot-melt adhesive is partially melt-infiltrated into the top surface of the rubber base material, and the hot-melt adhesive is partially melt-infiltrated into the non-woven fabric layer. Parts of the plurality of short fibers are exposed and bonded to the non-woven fabric layer by the hot-melt adhesive; part of the PU foamed layer is short fibers covering the hot-melt adhesive layer, and part of the PU foamed layer is bonded to the non-woven fabric layer surface. The composite shoe sole according to claim 1, wherein the thickness of the composite cloth material is less than 1.5 ㎜. The composite shoe sole according to claim 1, wherein the hot-melt adhesive of the composite cloth material is latex, and the plurality of short fibers are polyethylene terephthalate (PET), polybutylene terephthalate Polybutylene terephthalate (PBT) or polytrimethylene terephthalate (PTT). The composite sole according to any one of claim 1 to claim 3, wherein the PU foam layer is covered with at least one cushioning accessory.