Water-based polyurethane adhesive refers to an adhesive formed by dissolving or dispersing polyurethane in water. Some people also call water-based polyurethane as water-based polyurethane or water-based polyurethane. Water-based laminating adhesive is a kind of water-based polyurethane adhesive, generally used for film bonding.
1. The first application and popularization of water-based laminating adhesive is VAE type laminating adhesive. The glue has high brightness, strong powder covering ability and excellent operation performance. But its high cost, poor adhesion, and poor low temperature resistance.
2. The successful shaping and gradual perfection of acrylic polymer emulsion in laminating adhesives ushered in the spring for the large-scale promotion of water-based laminating adhesives. Acrylic compound film adhesive has strong adhesion, high cost performance and strong adaptability, which successfully overcomes the shortcomings of VAE type water-based compound film adhesive.
With the maturity and perfection of water-based dry laminating adhesives, people increasingly like to use water-based dry laminating adhesives. Although the cold glue laminating machine occupies less space, consumes less power, and is easy to operate. However, its laminated product has poor stiffness and poor adaptability to gold and silver inks. Many high-end products cannot meet the requirements. The dry laminated film will have a broader prospect.
In addition, the water-based dry laminating machine can be successfully applied to the oil-based laminating machine, so it has made an important contribution to the water-based industry.
