Is Polyurethane Laminating Adhesive Suitable for Liquid Flexible Packaging?

Polyurethane laminating adhesive is completely suitable for liquid flexible packaging applications, and it is also the mainstream bonding material for liquid beverages, sauces, daily chemical liquids, etc. With its excellent comprehensive properties, it has become the core bonding consumables for liquid flexible packaging.

 

Liquid flexible packaging has strict requirements for adhesives, which need long-term resistance to liquid immersion, acid and alkali, anti-delamination degumming and multi-layer film composite technology. Polyurethane laminated adhesive perfectly meets these requirements. It has high bonding strength and good flexibility, and can firmly bond various soft packaging substrates such as PET, PE and aluminum foil, and is suitable for various packaging forms such as self-standing bags, suction nozzle bags and liquid sauce bags. At the same time, it has outstanding medium resistance, can resist the corrosion of fruit juice, sauce and daily chemical liquid, and is not prone to gum opening and foaming after long-term soaking.

 

The solvent-free, two-component Polyurethane Adhesive on the market also has the advantages of environmental protection, non-toxicity and high-temperature sterilization resistance, which can meet the safety standards of food-grade liquid packaging and is suitable for high-temperature sterilization of liquid food packaging production. However, it should be noted that the common polyurethane adhesive has limited medium resistance and cannot be used for liquid packaging.

 

To sum up, the selection of special polyurethane laminating adhesive for flexible packaging can fully meet the use requirements of liquid flexible packaging, giving consideration to safety, stability and practicality.