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Hot melt adhesive film for adhering rubber/foamed EVA (ethylene-vinyl acetate copolymer) composite sole and preparation method thereof

A technology of hot-melt adhesive film and composite shoe sole, which is applied in the direction of natural rubber adhesives, shoe soles, adhesives, etc., and can solve the problems of poor moisture resistance, cold resistance and mechanical stability, poor creep resistance of film formation, and difficulty in coating Increase and other problems, achieve the effect of short curing time, prevent degumming and cracking, and simple method

Inactive Publication Date: 2015-04-29
GUANGZHOU LUSHAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Application number is disclosed in the Chinese patent application of CN103756576A a kind of hot-melt adhesive film that is used for SBS / foaming EVA composite sole bonding, adopts EVA as base resin, because EVA water resistance, heat resistance are poor, its The bonding strength will be greatly reduced, and the creep resistance of the film is poor. Under the long-term static load, the adhesive layer will slide, and its moisture resistance, cold resistance and mechanical stability are also poor; Therefore, terpene resin is added to the raw material of the hot melt adhesive film to improve the above-mentioned performance deficiencies of EVA; however, the addition of terpene resin will increase the viscosity of the hot melt adhesive and increase the difficulty of coating, and the terpene resin will The price is higher, which increases the cost of the product

Method used

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preparation example Construction

[0038]The coupling agent is one or more mixtures of vinyl silane coupling agent, amino silane coupling agent, silane coupling agent Si-69, oligomeric amino silane, etc.; Oxide initiator, specifically can be selected from one of benzoyl peroxide, benzoyl tert-butyl peroxide, methyl ethyl ketone peroxide; the rubber vulcanizing agent is sulfur, dimorphine disulfide, dimorphine tetrasulfide , disulfide-N, N'-dicaprolactam, trisulfide bis(diethylthiophosphoryl), dicyclohexyl tetrathiodiazine or a mixture of two or more; the rubber activator is oxidized One or more of zinc, magnesium oxide, lead monoxide, stearic acid, and calcium oxide are mixed; the rubber vulcanization accelerators are thiazole accelerators, sulfenamide accelerators, and thiuram accelerators 1. One or two or more of dithiocarbamate accelerators are mixed; the crosslinking agent is blocked isocyanate; the catalyst is dibutyltin dilaurate or / and stannous octoate. A kind of preparation method of rubber / foaming EVA...

Embodiment 1

[0047] A rubber / foaming EVA composite shoe sole bonding hot-melt adhesive film comprises a hot-melt adhesive film and a release film, and the hot-melt adhesive film is prepared by the following method:

[0048] Mix 90 parts of polyethylene-vinyl acetate copolymer (Taiwan Polymer Chemicals Co., Ltd., UE633), 10 parts of natural rubber, 4 parts of vinyltrimethoxysilane, and 0.3 parts of benzoyl peroxide at high speed Machine for mixing, sealed and placed for 24 hours, so that the initiator and silane are fully absorbed by the polymer matrix, extruded at 185°C with an extruder to granulate, and then scraped the rubber particles at 200°C with a hot-melt coater to obtain 0.15 mm thick hot melt adhesive film.

Embodiment 2

[0050] A rubber / foaming EVA composite shoe sole bonding hot-melt adhesive film comprises a hot-melt adhesive film and a release film, and the hot-melt adhesive film is prepared by the following method:

[0051] 60 parts of polyethylene-methyl acrylate copolymer (DuPont, AC 1820), 40 parts of EPDM (Dow, NORDEL IP 3720P), 3 parts of oligomeric aminosilane (Degussa, 1146), 1 part of silane coupling agent Si-69 for high speed The mixer is mixed, sealed and placed for 24 hours, so that the silane is fully absorbed by the polymer matrix, extruded with an extruder at 130°C to granulate, and then cast at 160°C with a casting machine to obtain a 0.15mm thick heat Melt film.

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Abstract

The invention discloses a hot melt adhesive film for adhering a rubber / foamed EVA (ethylene-vinyl acetate copolymer) composite sole and a preparation method thereof. The hot melt adhesive film for adhering the rubber / foamed EVA composite sole comprises a hot melt adhesive film and a release film, wherein the hot melt adhesive film comprises the following raw materials in part by weight: 60 to 95 parts of polyethylene-lipin polymer, 5 to 40 parts of rubber and 0.1 to 8 parts of an assistant; the hot melt adhesive film is prepared by carrying out extrusion pelletization in an extruder at the temperature of 80-200 DEG C to obtain hot melt adhesive particles and then carrying out tape casting by a tape-casting machine or carrying out scrape coating by a coating machine. The hot melt adhesive film disclosed by the invention is uniformly adhered; the hot melt adhesive film is adhered to the surface of a rubber outsole to be vulcanized together with the outsole and then the rubber outsole with an adhesive is compounded with an EVA midsole, so that complete adhesion between the hot melt adhesive film and the outsole as well as the midsole can be realized; in the vulcanizing process, bubbles are avoided, so that adhesion strength of the hot melt adhesive film is enhanced, the adhesive failure and cracking of the sole are prevented and the service life of the sole is prolonged.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a hot-melt adhesive film for bonding rubber / foamed EVA composite shoe soles and a preparation method thereof. Background technique [0002] The rubber / foamed EVA composite sole combines the advantages of the wear resistance of rubber, the portability and comfort of foamed soles, and has become the most commonly used sole for sports shoes and casual shoes. The bonding of rubber outsole and EVA midsole is generally bonded with solvent-based neoprene adhesive or polyurethane adhesive. The process of using solvent-based adhesive is complicated, and the rubber outsole and EVA midsole need to be roughened, rinsed with primer, Glue coating, baking solvent, and bonding are cumbersome, time-consuming and labor-intensive processes, and the production cost is high, and the benzene-based solvent in the adhesive has caused huge pollution to the environment and seriously endangered t...

Claims

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Application Information

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IPC IPC(8): C09J123/08C09J107/00C09J123/16C09J181/04C09J109/06C09J109/00C09J11/06C09J11/04C09J7/00A43B13/32
Inventor 伍金奎唐舫成张阳阳汪加胜
Owner GUANGZHOU LUSHAN NEW MATERIALS
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