Plastic-plastic compound waterborne bi-component adhesive

Abstract

The invention provides a plastic-plastic compound waterborne bi-component adhesive. The plastic-plastic compound waterborne bi-component adhesive comprises a component A and a component B. The component A comprises polyester polyol, waterborne epoxy resin, glycerol, adhesion promoters, wetting agents, defoaming agents, preservatives and water; the component B comprises diisocyanate and triphenylmethane tri-isocyanate. Compared with the prior art, the plastic-plastic compound waterborne bi-component adhesive has the advantages that the plastic-plastic compound waterborne bi-component adhesive is waterborne and environmentally friendly and contains little VOC (volatile organic compound), solvent residues are fewer than 1 mg, and food sanitation requirements can be met; delamination and bag breaking can be prevented during high-temperature steaming, and the plastic-plastic compound waterborne bi-component adhesive is high in plastic-plastic peel strength; the plastic-plastic compound waterborne bi-component adhesive is free of PE (polyethylene) film slipping agent absorption phenomena; the plastic-plastic compound waterborne bi-component adhesive is short in solidification time, can be completely solidified in a curing chamber at the temperature of 40 DEG C in 8 hours and is high in production efficiency; the plastic-plastic compound waterborne bi-component adhesive is wide in bagged material adaptability and can resist acid, alkali, oil and salt.

Description

technical field [0001] The invention relates to a water-based two-component adhesive used for plastic-plastic compounding, and belongs to the technical field of adhesives. Background technique [0002] As a composite medium between different substrates, adhesives are widely used in the field of food flexible packaging. By compounding substrates with different functional characteristics, it can meet various performance requirements. As we all know, PE and CPP films have good heat sealing properties, PA films have good impact resistance properties, aluminized layers have strong metallic luster properties, aluminum foil has good barrier properties and so on. With the continuous development of the packaging industry, people require higher and higher performance for composite packaging, such as barrier, freezing, acid and alkali resistance, oil and salt resistance, water boiling resistance, high temperature cooking resistance and so on. At present, there are three main types of...

AI Technical Summary

Problems solved by technology

At present, the adhesives that can meet the high-temperature cooking performance on the market are all solvent-based products, such as a high-temperature cooking-resistant adhesive disclosed in Chinese patent CN104059519A, but the product system is a solvent-based structure, which is not environmentally friendly, unsafe, and requires the addition of solvents. Recycling and disposal costs, unsafe production process in summer, and solvent emissions pollute the environment

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