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Method for producing general-purpose hot melt adhesive

A technology of hot melt adhesive and production method, applied in the direction of adhesive, monocarboxylate copolymer adhesive, adhesive type, etc., can solve the problems of poor heat resistance, inability to maintain dimensional stability, low strength, etc.

Inactive Publication Date: 2011-09-21
张耀华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low-melting hot-melt adhesives will creep at any time under load, and cannot maintain dimensional stability under load, so hot-melt adhesives are mainly used for positioning without load, so the main disadvantage of hot-melt adhesives is low strength, Poor heat resistance, please pay attention when using

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0004] The production of the product of the present invention needs to be divided into four steps. The first step: in the reaction vessel, first add 65 parts of ethylene-vinyl acetate copolymer resin with a content of 40%, and raise the temperature to 80°C at the same time to make ethylene-vinyl acetate copolymerization When the bulk resin reaches a molten state, start the mixer at a speed of 30 rpm. Step 2: Add 15 parts of terpene resin, keep warm and continue stirring for about 20 minutes. Step 3: Add 5 parts of paraffin, 4 parts of calcium carbonate, 4 parts of barium sulfate, and 2 parts of titanium dioxide, and keep stirring for 30 minutes. Step 4: Add 5 parts of barium stearate, continue stirring for 15 minutes, stop stirring, and obtain the finished product after cooling.

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Abstract

The invention discloses a method for producing a general-purpose hot melt adhesive. A product to be produced is an ethylene-vinylacetate copolymer hot melt agent, a working principle of which is different from that of other types of adhesives; the hot melt adhesive is not cross-linked when bonded, is solidified without dependence on volatilization of a glue solvent, and restores to a solid-state naturally from a heating molten state via a cooling process. Thus, the bonding effect of the hot melt adhesive is realized based on the good wetting property of the hot melt adhesive to a bonding surface in the molten state, and the bonding strength generated in a cooling solidified state. The hot melt adhesive is mainly applied to corrosion-resistant coating for wireless binding of books, packages, furniture side sealing, assembly of automobiles and household appliances, shoemaking, carpet coatings and metal products. The hot melt adhesive comprises the following main components: 40 percent of ethylene-vinylacetate copolymer resin, terpene resin, paraffin wax, calcium carbonate, barium sulfate, titanium dioxide and barium stearate.

Description

Technical field: [0001] The product of the invention belongs to the field of chemical industry. Background technique: [0002] The product of the present invention is a hot-melt adhesive, referred to as a hot-melt adhesive. Because of its fast curing speed, it has good wettability for various materials, including some non-polar plastics that are difficult to bond with other adhesives. High bonding strength. It has rich sources of raw materials and low price, so it has become one of the most promising adhesives. According to the chemical composition of the matrix, the hot melt agent can be divided into ethylene-vinyl acetate copolymer type, polyamide type, polyester type and polyurethane type, among which the most important one is ethylene-vinyl acetate copolymer type. The curing of hot melt adhesives is different from other types of adhesives. It does not produce cross-linking reactions, nor does it rely on the volatilization of the glue solvent to achieve the purpose of c...

Claims

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Application Information

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IPC IPC(8): C09J131/04C09J123/08C09J147/00
Inventor 张耀华
Owner 张耀华
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