Process for recycling waste film and product made therefrom

摘要

The present disclosure is directed to a process for recycling film materials, and is particularly directed to collecting spent release liners for labels and constructing new release liner stock from the spent materials. In order to use the waste film, the film is subjected to a process for increasing the intrinsic viscosity. In addition, a coloring agent may be incorporated into the film in order to mask yellowing. In one embodiment, a multilayered composite film is formed.

主权项

1. A process for recycling polymer films comprising:
collecting spent liner stock that has been removed from labels, the liner stock comprising a release layer; reducing the spent liner stock into chips; solid state polymerizing the liner stock chips in order to increase intrinsic viscosity; and heating and extruding the liner stock chips into a film.