Water-emulsion type paper-plastic composite adhesive and method for preparing same

Abstract

The invention discloses a water emulsion paper plastic composite adhesive which comprises the compositions with the weight portions of 2-8 portions of SBS resin, 2-8 portions of EVA resin, 2-12 portions of mixed solvent, 15-25 portions of tackifying resin, 1-25 portions of polyvinyl alcohol, 1-3 portions of composite emulsifier and 20-30 portions of water. After the mutual solution of the SBS resin, the EVA resin, the mixed solvent and the tackifying resin in the compositions and the emulsification of water phase solution prepared from the composite emulsifier, water and the polyvinyl alcohol, the latex adhesive with the viscosity of 500-2500MPa.s and less than 0.6 percent of the water absorption rate is obtained. The adhesive takes water as dispersing medium and has the characteristics of environmental friendly performance of water emulsion laminating adhesive, transporting and storing safety, high adhering strength and good humidity resistance of solvent laminating adhesive, etc. The deficiencies of present solvent laminating adhesive and acrylic water emulsion laminating adhesive are solved.

Description

Technical field

[0001] The invention relates to an adhesive preparation technology, in particular to a water-emulsion paper-plastic composite adhesive suitable for paper-plastic lamination and a preparation method thereof, and belongs to the field of chemical products. Background technique

[0002] Paper-plastic composite has properties such as moisture-proof, anti-fouling, folding resistance, and wear resistance. It can better protect paper products, enhance their safety, and extend their service life. It is widely used in art prints, packaging paper, advertising calligraphy and painting, book covers, and Paper bags and cartons for packaging have been widely used and have become the first choice for modern paper packaging.

[0003] At present, paper-plastic laminating adhesives can be divided into hot-melt type, water-emulsion type and solvent type. Hot-melt laminating adhesives do not contain solvents, are pollution-free, do not require heating and curing, and do not requ...