Preparation method of high-strength low-temperature hot-melt adhesive

A high-strength, low-temperature heating technology, applied in chemical instruments and methods, adhesives, film/sheet adhesives, etc., can solve the problem of hardness, strength, impact resistance, puncture resistance and other performances that cannot meet shoemaking standards High practical value, strong rigidity, and extremely elastic effects

Active Publication Date: 2018-05-22
HANGZHOU KAIYUE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Disadvantages of the existing technology: the existing traditional low-temperature hot-melt film is not suitable for use in labor insurance shoes, outdoor shoes, mountaineering shoes, military boots, etc. It does not meet the requirements of shoemaking standards, and its density is higher, the material is heavier, the price is more expensive, and it is prone to breakage of the main heel and toe cap in severe low temperature environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of high-strength low-temperature hot-melt adhesive, described preparation method is carried out as follows:

[0027] (1) The high-strength spunlace non-woven fabric is impregnated with emulsion resin in the dipping tank and then rolled, so that the mass ratio of the emulsion resin content to the high-strength spunlace non-woven fabric is 1:3, and it is perforated up and down under high pressure in an oven. ℃ High temperature and high pressure drying for tenter setting, cooling and setting;

[0028] (2) On the front and back of the formed sheet, the polyurethane TPU is melted and kneaded at a high temperature of 130°C by a screw extruder to form a sheet and the front and back are respectively cast and hot-pressed. Composite a layer of high-strength square grid cloth, and at the same time multi-layer heat-pressed and pasted to shape, and then cooled to shape;

[0029] The high-strength spunlace non-woven fabric is polyester large chemical fiber, wh...

Embodiment 2

[0034] The preparation method of high-strength low-temperature hot-melt adhesive, described preparation method is carried out as follows:

[0035] (1) The high-strength spunlace non-woven fabric is impregnated with emulsion resin in the dipping tank and then rolled, so that the mass ratio of the emulsion resin content to the high-strength spunlace non-woven fabric is 1:5, and it is perforated up and down under high pressure in an oven at 185°C. High temperature and high pressure drying for stenter setting, cooling and setting;

[0036] (2) On the front and back of the formed sheet, the polyurethane TPU is melted and kneaded at a high temperature of 150°C by a screw extruder to form a sheet and the front and back are respectively cast and hot-pressed. Composite a layer of high-strength square grid cloth, and at the same time multi-layer heat-pressed and pasted to shape, and then cooled to shape;

[0037] The high-strength spunlace non-woven fabric is polyester large chemical f...

Embodiment 3

[0042] A preparation method of high-strength low-temperature hot-melt adhesive, the preparation process of the fibrous fiberboard is as follows:

[0043] (1) Mix 30 parts by weight of negative ion / diatom mud composite material, 20 parts by weight of deionized water, and stir well, then add 50 parts by weight of emulsion resin, and mix and stir for 30 minutes to make the slurry fully mixed evenly. Then the non-woven fabric is rolled through the dipping tank, dried at 180°C for tentering and shaping, and then cooled and shaped to obtain a water-permeable semi-finished material;

[0044] (2) The 0.6MM spunlace non-woven fabric is treated with waterproof emulsion resin and then pad-rolled. The ratio of the mass content of the emulsion resin to the mass of the spunlace non-woven fabric is 1:4, and then it is perforated up and down under high pressure in an oven and dried at a high temperature of 180°C. Dry stenter setting, then cooling and setting to obtain waterproof semi-finished...

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Abstract

The invention relates to a preparation method of a high strength low temperature hot melt adhesive. The preparation method is carried out according to the steps of: (1) dipping high strength spunlaced nonwoven in emulsion resin in a rubber dipping groove, then conducting rolling to make the mass ratio of the emulsion resin content to the high strength spunlaced nonwoven at 1:3-5, conducting oven high pressure vertical perforation, and at 175-185DEG C, performing high temperature and high pressure drying tentering shaping and cooling shaping; and (2) on the front surface and back surface of the shaped sheet, carrying out multilayer hot-pressing laminating shaping at the same time, and then performing cooling shaping. The high strength low temperature hot melt adhesive solves the physical defects of insufficient impact resistance, compressive strength, puncture resistance and low temperature resistance generated in the application process of existing low temperature hot melt adhesives in outdoor shoes, mountaineering shoes and army boots, etc., and has high practical value.

Description

technical field [0001] The invention relates to a preparation method of high-strength low-temperature hot-melt adhesive. Background technique [0002] The low-temperature hot-melt film has extremely high elasticity, excellent rigidity, and strong flexibility. The three-dimensional effect is more excellent after the front and rear are solidified and shaped. Smooth lines, comfortable to wear, excellent elasticity, long-lasting shape, no need to apply glue, good adhesion, extremely convenient operation, and can be reused, the product is green and environmentally friendly. Leftovers can be recycled and reused. It is an environmentally friendly material that replaces traditional materials. At present, the low-temperature hot-melt film on the shoe material market can be used in various types of shoe shaping midsoles and automotive interiors, luggage, handbags, stationery, toys, leather goods, furniture and other fields. [0003] Disadvantages of the existing technology: the exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/02B32B27/06B32B27/36D06M15/263D06M101/32
CPCC09J7/21C09J2301/12D06M15/263D06M2101/32
Inventor 傅陆军
Owner HANGZHOU KAIYUE NEW MATERIAL CO LTD
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