Flexible packaging polyurethane laminating adhesives are the core lamination materials in the fields of food, daily chemicals, and medicine packaging. With their unique molecular structure advantages, they possess seven core functional features, which are suitable for the efficient, safe, and durable production requirements of modern flexible packaging.
1. Excellent bonding performance, highly compatible with various flexible packaging substrates such as plastics and aluminum films. It has sufficient initial adhesion and high final bonding strength, and the composite film is not prone to delamination or peeling.
2. Outstanding weather resistance, capable of withstanding temperature differences between high and low temperatures. It does not crack at low temperatures or soften at high temperatures, suitable for various storage and transportation scenarios such as steaming and refrigeration.
3. Outstanding resistance to media, capable of resisting erosion from oils, acids, alkalis, and seasonings, effectively avoiding problems such as blistering and leakage of the packaging.
4. Excellent barrier reinforcement function, can stabilize the composite structure, improve the packaging's oxygen barrier, water barrier, and light protection effects, and extend the shelf life of the contents.
5. Wide process compatibility, covering various types such as solvent-based, solvent-free, and water-based. The coating is uniform and has good leveling properties, suitable for high-speed lamination production lines, with high production efficiency.
6. Safe, environmentally friendly, and clean, without any excessive curing by-products, with low migration of small molecules, in line with food contact packaging safety standards, with low VOC emissions, green and pollution-free.
7. Extremely strong plasticity, can adjust the formula according to packaging requirements, achieve functional customization, adapt to differentiated packaging needs of high-end food, medicine, etc., and is the preferred bonding material in the flexible packaging industry.
