Hot melt pressure sensitive adhesive for environmental protection and sanitary articles and preparation method thereof

Abstract

The invention relates to a hot melt pressure sensitive adhesive for environmental protection and sanitary articles, which comprises the following components in parts by weight: 40-70 parts of thermoplastic elastomer; 20-30 parts of tackifier, 5-8 parts of cross-linking agent, 1-3 parts of antioxidant; 10-15 parts of first coupling agent, 1-3 parts of other auxiliary agents. The tackifier is prepared from tackifier resin, reactive monomer, second coupling agent and inorganic nanoparticles. The tackifier resin can be selected from aromatic series tackifier resin, inorganic nanometer ion is nanoalumina, and thermoplastic elastomer is two or more compositions of SBS, SIS and SEBS. More than two kinds of thermoplastic elastomers are used to make the hot melt pressure sensitive adhesive achieveequilibrium complementarity in initial viscosity, holding viscosity and fluidity. The viscosifier adopts a unique composition formula, which makes the viscosifier increase viscosity, fluidity and wettability, at the same time, it can improve the bond strength and water resistance.

Description

technical field [0001] The invention relates to the technical field of pressure-sensitive adhesives, in particular to a hot-melt pressure-sensitive adhesive for environmental hygiene products and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive is a kind of adhesive that is sensitive to pressure. It does not need to add other additives or heat. It only needs to apply a small pressure to be firmly bonded to the substrate to be adhered. It will have an impact on the surface of the base material, and its characteristics are that it is easy to stick, easy to remove, peeling without damage, and the adhesive layer will not dry up in a long period of time, so the pressure-sensitive adhesive is also called self-adhesive. Pressure-sensitive adhesive products are used in various fields such as packaging, automobiles, transportation, communications, electrical appliances, building materials, machinery, aviation, light industry, and hygiene. Becaus...

AI Technical Summary

Problems solved by technology

However, due to the excessive pursuit of environmental protection performance, the existing adhesives for sanitary products lead to a decrease in adhesive performance, poor water resistance, low tensile strength, poor heat resistance and cold resistance; The viscosity of the melt adhesive is very high when it melts, and its fluidity is poor, which leads to high energy consumption in the coating operation, uneven coating, large coating volume and high cost, and will affect the use of sanitary products

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