Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Deforming the surface only
Patent
1978-03-27
1980-08-12
Lesmes, George F.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Deforming the surface only
264284, 264296, 264320, 428 43, 428188, B28B 1108, B65D 6528
Patent
active
042173272
ABSTRACT:
Plastic films or sheets having tear lines formed therein are disclosed. These films are made by forming a score along a predetermined line in the surface of a plastic film to form a tear line and then restoring the scored film surface without eliminating the line of tear. The products tear very easily along predetermined lines even though the restored plastic films have enhanced impact strengths. By restoring the surface of the scored film, score lines become invisible to the naked eye and the useful life of the film is extended. Single-ply or multi-ply products are disclosed including products having an embossed or textutred surface, still without eliminating the capability for a smooth line of tear. The products have many utilities as structural materials which may be sized or torn by hand, including wall coverings, window shade coverings, rupturable packages and envelopes, to mention a few.
REFERENCES:
patent: 2626302 (1953-01-01), Cox
patent: 3086692 (1963-04-01), Cage
patent: 3719548 (1973-03-01), Keck et al.
patent: 3790744 (1974-02-01), Bowen
patent: 3812002 (1974-05-01), Lurie
patent: 4093761 (1978-06-01), Taylor
Cancio Leo V.
Miller Gerald W.
Mortellite Robert M.
Peterson Brian P.
Steimle Anthony R.
Clopay Corporation
Lesmes George F.
Thomas Alexander S.
LandOfFree
Method of forming tear lines in plastic films does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of forming tear lines in plastic films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming tear lines in plastic films will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2182346