Flexible packaging polyurethane laminating adhesive - Outstanding low-temperature resistance performance

In the fields of cold chain logistics, frozen food, and low-temperature storage, flexible packaging materials often encounter severe low-temperature challenges. Ordinary laminating adhesives are prone to cracking, delamination, and adhesive failure. Flexible packaging polyurethane laminating adhesives, with their exceptional low-temperature resistance, have become the core preferred material for flexible packaging composite processes, perfectly adapting to various low-temperature usage scenarios. 

 

Compared with the shortcomings of ordinary laminating adhesives, such as easy hardening at low temperatures and loss of toughness, polyurethane laminating adhesives have a unique flexible molecular structure. They can maintain stable elasticity and bonding strength even in extremely low temperatures. Even at -40℃ or lower extremely cold conditions, the adhesive layer will not crack and soften, and can firmly adhere to mainstream flexible packaging substrates such as PET, PE, and aluminum foil. This effectively prevents problems such as packaging delamination, air leakage, and damage, ensuring the sealing and integrity of the packaging. 

 

Meanwhile, polyurethane laminating adhesives have extremely strong adaptability, covering both solvent-free and solvent-based varieties. After curing, the adhesive layer is flexible and resistant to bending, and can withstand the stress and tension caused by the thermal expansion and contraction of films in low-temperature environments. Their performance far exceeds that of traditional laminating adhesives such as acrylics, and they comply with food packaging safety standards, without solvent residues. Thanks to their outstanding low-temperature stability and comprehensive adaptability, polyurethane laminating adhesives are widely used in flexible packaging fields such as frozen food, quick-frozen fresh produce, and low-temperature cosmetics, providing long-term protection for the quality of low-temperature packaging.