What is the introduction of Solvent-Free Film Laminating Adhesives?

Film laminate adhesives are used to connect a plurality of substrates. These adhesives can be preformed or heated before application to the substrate. They are used in various applications, including the fabrication of nonwoven products. The adhesives can withstand a wide range of temperatures. Typically, they have a melting temperature of 96degC and 250degF.

Solventless film-laminating adhesives are cured chemically through a reaction between isocyanates and hydroxyl groups. The rate at which these adhesives cure is dependent on environmental conditions. Cold and dry environments will cause the adhesive to cure slowly, while humid and hot conditions will speed up the curing process.
Once a laminate has been formed, it must be properly cured before slitting. The laminate should be dry and no longer feel tacky or gummy. Some converters store laminated rolls at high temperatures to speed up the curing process. After lamination, a second pass is necessary for final curing.

Film laminate adhesives can be applied to a variety of surfaces. They can be used for protection, enhanced appearance, and many more applications. Typically, films are twenty-four to one hundred microns thick. They use either a hot or cold adhesive, which is pressure-sensitive, and one that uses a heated roller at 60 degrees Celsius.

The application process of a solventless adhesive can be a bit complex. Different adhesives have different cure rates, which depends on the film, environmental conditions, and curing time. Optimizing your lamination process can be challenging, but the good news is that today's technology has come a long way. The fill time of many conventional solventless adhesives is now under three days.