Lijmfilms

Lijmfilms are thin, continuous layers of adhesive material prepared to bond two surfaces. They are typically formed by coating a liquid adhesive onto a backing or by extruding a polymeric adhesive melt, then drying or curing to a solid film. Lijmfilms can be single-sided or double-sided and may include protective liners that are removed just before use.

Materials and forms vary, including solvent-based, water-based, hot-melt, and UV-curable adhesives. Common chemistries used in lijmfilms include acrylics, polyurethanes, EVA and other polymer blends. Film thicknesses range from a few micrometers to several tens of micrometers, with thicker films used for stronger or more rigid bonding requirements. The choice of film depends on substrate compatibility, required bond strength, temperature resistance, and exposure to chemicals.

Production and handling involve coating or extruding the adhesive onto a carrier, followed by drying, curing, and sometimes lamination with a release liner. Properties such as peel strength, shear strength, open time, temperature stability, and aging resistance are specified to match application needs. Environmental considerations include the use of solvent-free or reduced-solvent formulations and hot-melt or UV-curable systems to improve sustainability and handling safety.

Applications are wide-ranging and include packaging and labeling, graphic arts and laminates, electronics assembly, automotive interiors, and medical devices. Lijmfilms offer controlled bond-line thickness, easy automation, clean processing, and longer shelf life compared with some liquid adhesives, though they may require precise storage conditions and specialized equipment for lamination.

Safety and regulatory aspects focus on adhesive composition, solvents or reactive groups, and end-of-life disposal. Advances continue in lower-emitting formulations, recyclability, and compatibility with diverse substrates.