Flexible packaging polyurethane laminating adhesive-Excellent flexibility

Polyurethane laminated adhesive for flexible packaging is the core material of flexible packaging composite technology. Its excellent flexibility is the core advantage different from ordinary laminated adhesive, and it is also the key performance to ensure the quality and service life of flexible packaging products. Relying on the unique molecular structure characteristics, the cured adhesive layer has both elasticity and toughness, which can perfectly meet the deformation requirements of various flexible packaging substrates.

 

Flexible packaging mostly uses flexible materials such as plastic film, aluminum foil and aluminum-plated film, which will continue to deform during production folding, transportation extrusion and daily bending. Ordinary hard laminating adhesives are prone to problems such as brittle cracking, delamination and edge warping, while the flexible adhesive layer of polyurethane laminating adhesive can stretch and bend synchronously with the substrate, effectively buffering external stress, preventing cracking and peeling at the bonding place, and greatly improving the composite stability of packaging.

 

At the same time, the polyurethane laminating adhesive has strong flexibility and adaptability, is compatible with the multi-layer film composite structure, and has excellent low-temperature resistance. It remains flexible in the cold chain and low-temperature storage environment and will not become hard and brittle due to low temperature. With this advantage, it is widely used in food retort pouch, daily chemical packaging bags, medical soft packages, electronic moisture-proof packaging and other fields.

 

Excellent flexibility makes polyurethane laminated adhesive perfectly meet the industry demand of light weight, easy bending and wear resistance of flexible packaging, giving consideration to bonding strength and application adaptability, and becoming the preferred adhesive for modern flexible packaging composite production.