Method of forming tear lines in plastic films

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Deforming the surface only

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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.

Rate now

     

Profile ID: LFUS-PAI-O-2182346

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.