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Hot melt adhesive powder

A technology of front top and composite nucleating agent, which is applied in the field of front top glue, can solve the problems of high price, achieve the effects of low cost, reduced processing cost, and fast curing speed

Inactive Publication Date: 2017-01-11
东莞市舜天实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the top rubber used in China's shoe industry cannot fully meet the above requirements, and the price is very expensive

Method used

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  • Hot melt adhesive powder
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Front side glue, comprises each component of following parts by weight:

[0023]

[0024]

[0025] Wherein, the composite nucleating agent is a silicon dioxide ultrafine powder-sodium benzoate composite nucleating agent.

[0026] The antioxidant is tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, referred to as antioxidant 1010.

Embodiment 2

[0028] Front side glue, comprises each component of following parts by weight:

[0029]

[0030] Wherein, the composite nucleating agent is a silicon dioxide ultrafine powder-sodium benzoate composite nucleating agent.

Embodiment 3

[0032] Front side glue, comprises each component of following parts by weight:

[0033]

[0034]

[0035] Wherein, the composite nucleating agent is a silicon dioxide ultrafine powder-sodium benzoate composite nucleating agent.

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Abstract

The invention relates to the technical field of hot melt adhesives, in particular to hot melt adhesive powder, which is prepared from the following components in parts by weight: 20 to 55 parts of aliphatic seriesdihydric alcohol, 30 to 60 parts of binary acid, 15 to 30 parts of dimethyl terephthalate, 0.1 to 2 parts of titanium catalyst, 0.1 to 2 parts of stabilizer, 0.1 to 2 parts of antioxidant,and 0.1 to 2 parts of composite nucleating agent. Compared with the prior art, the hot melt adhesive powder provided by the invention adopts the aliphatic seriesdihydric alcohol, the binary acid and the dimethyl terephthalate as a synthesis system, a composite additive is added, and the polyester is modified, so that the hot melt adhesive powder has a good adhesion force; particularly, after the composite nucleating agent is added, the hot melt adhesive powder is fast in curing speed, has the shore hardness being 70, the softening point being 175 DEG C, the resistance to low temperature of minus 45 DEG C, the peeling strength being 6.8N / mm, and the elongation being 620 percent, has good low temperature flexibility and adhesion, is particularly suitable for various sizing machines for lasting, realizes automatic sizing, is good in processing performance and low in cost, and is beneficial to greatly reducing the processing cost of shoes.

Description

technical field [0001] The invention relates to the technical field of hot melt adhesives, in particular to front top adhesives. Background technique [0002] China is the world's largest producer of footwear, with an annual output of 7 to 8 billion pairs of shoes. Adhesives are used in many processes in shoemaking. The stretch last uses hot melt adhesive to firmly bond the upper and the inner sole. The middle and back stretch last mainly uses strips of front upper glue. The strips of glue pass through the rubber hose of the automatic gluer, and the glue is applied between the mid-heel and the inner sole of the upper, and the bonding operation is completed within a few seconds. The front upper adhesive for shoes requires good comprehensive properties, including high softening point, good adhesive strength and low temperature flexibility, fast curing, moderate hardness (Shore hardness greater than 40) and moderate melt viscosity. At present, the front upper rubber used in C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/02C09J11/04C09J11/06
CPCC09J167/02C08K3/36C08K5/098C08K5/1345C08K5/524C08K13/02C09J11/04C09J11/06
Inventor 冷先勇
Owner 东莞市舜天实业有限公司
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