Preparation method and application of environment-friendly hot melt adhesive having low initial adhesion and no compression sensitivity after curing and used for disposable sanitary material

Abstract

The invention discloses a preparation method and an application of an environment-friendly hot melt adhesive having low initial adhesion and no compression sensitivity after curing and used for a disposable sanitary material. The hot melt adhesive is prepared from 10%-25% of naphthenic oil, 15%-35% of a macromolecular polymer, 1%-10% of synthetic wax and 0.1%-1.0% of an antioxidant. The inventionmainly aims to provide the environment-friendly hot melt adhesive which is used at four end seal parts of the disposable sanitary material, is not carbonized, has excellent bonding property, low initial adhesion, no compression sensitivity and low odors, continuous production of a production line can be guaranteed, the repair and maintenance costs of equipment can be reduced, and 10%-30% of production cost can be saved as compared with a traditional SBC formula hot melt adhesive. The hot melt adhesive overcomes the defects of high initial adhesion and high compression sensitivity of hot melt adhesives after curing in the prior art. The hot melt adhesive reduces initial adhesion and compression sensitivity of the hot melt adhesive after curing by use of a novel host material at four end seal parts of the disposable sanitary material.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a hot-melt adhesive, in particular to a disposable hygienic environment-friendly hot-melt adhesive with low initial viscosity and no pressure sensitivity after curing, its preparation method and application. Background technique [0002] Hot-melt adhesives are widely used in the disposable sanitary materials industry, which improves production efficiency and promotes quality assurance in the industrialization process of these fields. At present, hot-melt adhesives used in disposable sanitary materials are mainly based on SIS and SBS are the basic components, plus naphthenic oil, tackifying resin such as rosin, modified petroleum resin C5 or C9, etc. These traditional SBC formula hot melt adhesives are used in the disposable hygiene material industry. Although they can meet the bonding requirements of this station, they will cause the following problems during use: 1) The SBC form...

AI Technical Summary

Problems solved by technology

These traditional SBC formula hot melt adhesives are used in the disposable hygiene material industry. Although they can meet the bonding requirements of this station, they will cause the following problems during use: 1) The SBC formula hot melt adhesive is long Carbonized crust will appear when used at high temperature for a long time, and carbide precipitation will cause damage to the melting adhesive system and blockage of the adhesive spraying system. On the one hand, it will increase equipment repair and maintenance costs, and on the other hand, it will affect production efficiency.

2) Traditional SBC formula hot melt adhesives have high initial adhesive strength and high pressure sensitivity, resulting in adhesive leaks sticking to the skin during use of disposable sanitary materials, which can easily cause skin damage

3) Traditional SBC formula hot melt adhesives have a strong smell, which may cause physical discomfort or allergies during use