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eva hot melt adhesive for kitchenware

A technology for hot melt adhesives and kitchen utensils, which is applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., and can solve the problems of limited application, reduced bonding strength, and oil resistance.

Inactive Publication Date: 2017-07-11
SHANGHAI JENTAI NANO SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, EVA hot melt adhesives are not resistant to grease, and their bond strength will decrease after contact with grease.
For kitchen products that are often placed in high-temperature, high-oil environments, the inherent defects of EVA hot-melt adhesives limit the application in kitchen products

Method used

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  • eva hot melt adhesive for kitchenware

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0048] As an embodiment of the present invention, the VA content in the EVA resin is 20-32% by weight.

[0049] The melt index of the EVA resin is 15-400 g / 10min.

[0050] In EVA hot-melt adhesives, the lower the VA content, the higher the crystallinity increases the hardness; the higher the VA content, the lower the crystallinity and the greater the elasticity. The choice of EVA melt index is also very important. The smaller the melt index, the poorer the fluidity, the higher the strength, the higher the melting temperature, and the poorer the wetting and permeability of the adherend; better, but lower bond strength.

[0051] As a most preferred embodiment of the present invention, the VA content in the EVA resin is 28% by weight.

[0052] Vinylbenzene fused heterocyclic mixture

[0053] In the present invention, the vinylbenzene fused heterocyclic mixture includes sulfonated vinylbenzene fused heterocyclic compounds and unsulfonated vinylbenzene fused heterocyclic compoun...

Embodiment approach 1

[0121] Embodiment 1: An EVA hot melt adhesive for kitchen utensils, in parts by weight, its preparation raw materials at least include:

[0122] 100 parts of EVA resin;

[0123] Vinylbenzene condensed heterocyclic mixture 0.1-10 parts;

[0124] 15-40 parts of tackifier;

[0125] Viscosity modifier 10-20 parts;

[0126] Antioxidant 0.01-0.5 parts;

[0127] Initiator 0.05-0.5 part;

[0128] Filling 20-50 parts;

[0129] Wherein, the vinylbenzene fused heterocyclic mixture includes sulfonated vinylbenzene fused heterocyclic compounds and unsulfonated vinylbenzene fused heterocyclic compounds, and the vinylbenzene fused heterocyclic compounds are selected from: 2-ethylene Base-1-benzofuran or 2-vinyl-1-benzothiophene.

Embodiment approach 2

[0130] Embodiment 2: Same as Embodiment 1, the difference is that the molar ratio of the sulfonated vinylbenzene fused heterocyclic compound to the non-sulfonated vinylbenzene condensed heterocyclic compound is 1: (2-10).

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Abstract

The invention discloses an EVA hot-melt adhesive for kitchenware. The EVA hot-melt adhesive for kitchenware is at least prepared from, by weight, 100 parts of EVA resin, 0.1-10 parts of a vinylbenzene fused heterocycle mixture, 15-40 parts of a tackifier, 10-20 parts of a viscosity modifier, 0.01-0.5 part of an antioxidant, 0.05-0.5 part of an initiator and 20-50 parts of filler, wherein the vinylbenzene fused heterocycle mixture is prepared from a sulfonated vinylbenzene fused heterocycle compound and a non-sulfonated vinylbenzene fused heterocycle compound, and the vinylbenzene fused heterocycle compounds are selected from 2-vinyl-1-benzofuran and 2-vinyl-1-benzothiophene.

Description

technical field [0001] The invention relates to the field of hot-melt adhesives, in particular to EVA hot-melt adhesives for kitchen utensils, and also to a preparation method for EVA hot-melt adhesives for kitchen utensils. Background technique [0002] Hot melt adhesive is known as "green" adhesive due to its solvent-free, pollution-free, fast curing speed, and good process performance. It is solid at room temperature, and when heated and melted to a certain extent, it becomes fluid and viscous. After melting, it becomes Light brown translucent body or white. The scope of application of hot melt adhesives is getting wider and wider, and has expanded from traditional packaging fields (book binding, hygiene products) to various fields of life. [0003] EVA-type hot-melt adhesive is a type of hot-melt adhesive that is widely used at present. EVA-type hot-melt adhesive does not cross-link when it is cured, and can be softened repeatedly by heating, so it can be bonded multipl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/08C09J11/04C09J11/06C09J11/08
CPCC08L2201/08C08L2205/03C09J11/04C09J11/06C09J11/08C09J123/0853C09J2301/304C08L93/04C08L23/06C08K13/02C08K5/1535C08K5/45C08K2003/265C08L45/00
Inventor 史立秀林进森
Owner SHANGHAI JENTAI NANO SCI & TECH CO LTD
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