Film lamination is a process that bonds multiple layers of film materials together using adhesives, widely used in packaging, electronics, automotive, and construction industries. The performance of the adhesive directly affects the strength, weather resistance, and functionality of the composite film.
An ideal adhesive for film lamination should possess the following characteristics:
Strong Bonding Strength: Capable of firmly adhering to different film materials (e.g., PET, BOPP, aluminum foil) to prevent delamination.
Flexibility: Adapts to the bending and stretching of films, avoiding cracking or debonding.
Temperature and Chemical Resistance: Maintains stability in high-temperature or humid environments, with some applications requiring resistance to oils or solvents.
Eco-Friendliness and Safety: Complies with regulations for food packaging or medical use (e.g., solvent-free, water-based, or UV-curable adhesives).
Currently, polyurethane (PU), acrylic, and epoxy adhesives are the mainstream choices. Among them, water-based PU adhesives are preferred for green packaging due to their eco-friendly and low-VOC properties, while UV-curable adhesives are favored in electronic film lamination for their fast curing and energy efficiency.
In the future, as demand for functional films (e.g., high-barrier, biodegradable) grows, adhesives will advance toward high-performance and smart solutions, driving broader applications of film lamination technology.