Laser scoring of metal/polymer structures

摘要

A method of scoring a multi-layer film structure, wherein the multi-layer film structure comprises a metal layer and polymer layer bonded to each other, the method comprises using a single laser beam incident to the polymer layer to produce a score line in the polymer layer, wherein the laser energy is absorbed only by the metal layer.

主权项

1. A method of scoring a multi-layer film structure comprising a metal layer positioned between a first and a second polymer layer, the metal layer being bonded to the first polymer layer, the method comprising:
scoring with a single laser beam, the laser beam being incident to the first polymer layer and having a wavelength such that laser energy is not absorbed but transmitted through the first polymer layer, the wavelength being sufficiently absorbable by the metal layer such that a plume is generated from the metal layer of sufficient energy to cut through the first polymer layer such that the film structure is selectively scored concurrently through the first polymer layer and the metal layer while the second polymer layer is either not scored or only partially scored.