Method of making releasable metalized embossed transfer film

摘要

A method is presented for making releasable transfer film suitable to provide a metalized embossed composite onto a paper substrate without a release layer between the composite and a polymeric carrier layer. The transfer film includes a polymeric base layer, an embossing material layer and a metal layer. The transfer film is bonded to the paper substrate with an adhesive layer allowing the polymeric barrier layer to peel away from and to expose the metal-backed, embossing material layer. The substrate covered with the metalized embossed composite can be used to impart holographic style images to packaging, printed media products such as magazines.

主权项

1. A method of forming a releasable metalized embossed transfer film comprising the steps of
(A) providing a polymeric base layer defining a side having a surface energy less than 60 dynes/cm, (B) applying in direct contact with the side of the polymeric base layer an embossing material layer comprising a major fraction of polyurethane, the embossing material layer exhibiting an elongation at break of about 400-550% determined by ASTM method D882010, (C) embossing a surface on a side of the embossing material layer opposite the polymeric barrier layer in which the surface defines a diffraction grating pattern, and (D) depositing a metal layer on the surface of the embossing material layer.