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Hot-melt pressure-sensitive adhesive with excellent thermal stability

A hot-melt pressure-sensitive adhesive, thermal stability technology, applied in the direction of adhesives, adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., can solve problems affecting the sizing process, production line shutdown, clogged nozzles, etc. Achieve the effects of improving equipment utilization, reducing clogging frequency, and small viscosity changes

Inactive Publication Date: 2015-05-13
聚胶新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, hot-melt pressure-sensitive adhesives used in disposable hygiene products and tape label industries have thermal stability problems. Hot-melt adhesives are degraded or cross-linked when heated at high temperatures for a long time, resulting in a decrease or increase in viscosity, which affects the sizing process; At the same time, skinned or coked substances (referred to as carbides) accumulate at the bottom of the glue tank or at the throat or glue gun, thereby blocking the nozzle and causing the production line to stop

Method used

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  • Hot-melt pressure-sensitive adhesive with excellent thermal stability
  • Hot-melt pressure-sensitive adhesive with excellent thermal stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh each component according to the corresponding weight ratio in Table 1, put each component into a temperature-controllable aluminum tank in order to heat, and raise the temperature to 170°C to melt all the raw materials and stir them evenly. Cool in a silicone paper box.

Embodiment 2

[0037] Weigh each component according to the corresponding ratio in Table 1, and the rest of the steps are the same as in Example 1.

Embodiment 3

[0039] Weigh each component according to the corresponding ratio in Table 1, and the rest of the steps are the same as in Example 1.

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PUM

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Abstract

The invention discloses a hot-melt pressure-sensitive adhesive with excellent thermal stability. The hot-melt pressure-sensitive adhesive is characterized by being prepared from the following components in percentage by weight: 0-30% of a styrene-based block polymer, 1-30% of an olefin copolymer, 18-70% of tackifying resin, 10-40% of a liquid plasticizer and 0.1-2% of an antioxidant. By virtue of the preparation with cooperative utilization of the olefin copolymer and the antioxidant, the thermal stability of the hot-melt pressure-sensitive adhesive is remarkably improved; the hot-melt adhesive is small in viscosity change after being heated for a long time; the influence on the production process is avoided; the production and accumulation of carbide are reduced; the abnormal halt frequency and the waste of the production materials are reduced; meanwhile, the color retention performance is improved; the skinning and gelling conditions are improved; the blockage frequency of an adhesive nozzle is reduced; the utilization rate of equipment is increased.

Description

technical field [0001] The invention relates to the technical field of hot-melt pressure-sensitive adhesives, in particular to a hot-melt pressure-sensitive adhesive with excellent thermal stability used in the industries of disposable hygiene products and tape labels. Background technique [0002] Hot melt adhesive is a kind of plastic adhesive. Its physical state changes with temperature within a certain temperature range, but its chemical properties remain unchanged. It is non-toxic and tasteless, and is an environmentally friendly chemical product. The pressure-sensitive adhesive refers to a type of adhesive that is sensitive to pressure and can be bonded to the adherend with a little finger pressure. Hot-melt pressure-sensitive adhesive has dual characteristics of hot-melt adhesive and pressure-sensitive adhesive, so it is the third generation of pressure-sensitive adhesive products after solvent-based and emulsion-type pressure-sensitive adhesives. Compared with the p...

Claims

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Application Information

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IPC IPC(8): C09J153/02C09J123/08C09J193/04C09J157/02C09J11/06
Inventor 李国强余刚树钟桥古
Owner 聚胶新材料股份有限公司