Application of Polyurethane Laminating Adhesive in Metal Film Composites

Polyurethane laminating adhesives can be fully utilized for the composite of metal films. They are also the mainstream bonding materials for the composite of metal films such as aluminum foil and aluminum-coated films with plastic films. They are widely applied in fields like flexible packaging and moisture-proof barrier materials. 

 

This laminating adhesive has excellent adhesion compatibility with metal films. The polar groups in the adhesive liquid can form a stable bond with the surface of the metal film, resulting in a firm adhesion and avoiding problems such as delamination and gelation. Moreover, after the adhesive layer cures, it has excellent flexibility, which can adapt to the subsequent bending, rolling and other processing operations of the film, and will not cause cracking or peeling due to deformation, meeting the usage requirements of various flexible composite products. 

 

Its comprehensive performance is stable, featuring excellent temperature resistance, weather resistance and corrosion resistance. Its performance is not likely to deteriorate under normal usage conditions. Some modified varieties can also be adapted to special working conditions such as high-temperature steaming. The applicable scenarios are very extensive. In addition, this adhesive process has strong compatibility and can be matched with mainstream film composite production processes, and can also be well adhered to various plastic film substrates. 

 

In practical applications, for aluminized films, a special polyurethane laminating adhesive needs to be selected to effectively prevent the aluminized layer from peeling off or transferring. As long as the core processes such as coating, drying and curing are well controlled, high-quality and tightly adhered metal composite films can be produced, making it an excellent bonding material for metal film composites.