Abstract: A film for tamper-proof coverings for product carriers consisting of platic is suggersted, which can replace the aluminum cover films known previously and which comprises a plastic matrix containing a particulate filler, this filler being selected and contained in the matrix with a proportion such that the penetration resistance of the film is reduced to below a limit of 450N/mm (measured on a film approximately 150 .mu.m thick).
Type:
Grant
Filed:
November 22, 1995
Date of Patent:
August 3, 1999
Assignees:
BP Chemicals Plastec GmbH, PCD Polymere Gesellschaft