Polyurethane adhesives are suitable for a wide range of applications depending on their technology. Adhesives based polyurethanes are indispensable in the production of flexible packaging. Most of this packaging is composed of two or more layers held together by laminating adhesives.
The typical flexible packaging production process is composed of laminating unit, drying, mixing unit. While solvent-based polyurethane adhesives need a drying unit before going through the lamination process, solvent-free polyurethane adhesives can be used without this production step.
Because polyurethane adhesives have high flexibility and bonding strength, they are widely used throughout the packaging industry. Food packaging, for example polyurethane adhesives for coffee pouches ( bags for coffee powder and chips) can be used for applications at room temperature and below, but some formulations are also suitable for elevated temperatures such as polyurethane adhesives for pasterisation or retort applications.
The technical information provided by the adhesive manufacturer should be followed to ensure complete curing. Time, temperature and humidity are the most important factors for the curing process. Megabond can provide various high quality polyurethane adhesives with different functional benefits for flexible packaging. If you feel interested in any items of the products, we will be happy to give you more information upon receipt of your detailed requirements.
