A PROCESS FOR FORMING A MULTILAYER FILM

摘要

In one embodiment, the process for forming a multilayer film (18) comprises disposing a supportive layer (16) adjacent to an imprinting layer (14) to form a multilayer film and imprinting microstructures in the imprinting layer as the multilayer film passes between a heated roller (112) and a compression roller (116-124). The multilayer film is free of a removable carrier layer. The supportive layer has a supportive layer glass transition temperature that is greater than or equal to about 15·C higher than the imprinting layer glass transition temperature and/or the supportive layer has a supportive layer melting temperature that is greater than or equal to about 15·C higher than an imprinting layer melting temperature. The imprinting temperature is lower than the supportive layer (18) melting temperature.