Method of making perforated films

Details Method of making perforated films Method of making perforated films

1982-07-28

1985-04-16

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

15624419, 156253, 156277, 264 25, 264132, 264154, 264171, B29C 1708

Patent

active

045115206

ABSTRACT:
A perforated plastic film is produced by forming a pattern of light absorbing material (e.g., in dot and/or circular forms) on the film and subjecting the printed film to radiant energy from a light source in order to melt the film areas covered with the light absorbing material, thus producing a corresponding plurality of perforations in the plastic film.

REFERENCES:
patent: 2699113 (1955-01-01), Hoover
patent: 2715363 (1955-08-01), Hoover
patent: 2763759 (1956-09-01), Mito et al.
patent: 3587459 (1971-06-01), Spencer et al.
patent: 3999918 (1976-12-01), Landsman
patent: 4117181 (1978-09-01), Minami et al.

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