Method for temporarily protecting sticky surface and a thus prot

Details Method for temporarily protecting sticky surface and a thus prot Method for temporarily protecting sticky surface and a thus prot

1980-12-22

1982-07-13

Epstein, Henry F.

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

Halogen containing compound

156329, 428447, 428464, B32B 3300

Patent

active

043394868

ABSTRACT:
The present invention provides a unique solution of the difficult problem in the prior art that no efficient peelable release paper is available for temporarily protecting the sticky surface of the adhesive sheet material, e.g. adhesive tapes, adhesive labels, stickers and the like, from inadvertent sticking to an undesired surface when the sticking agent on the adhesive sheet is a silicone-based one. The inventive adhesive sheet material with temporarily protecting covering sheet is formed by use of a sheet of a hydrophilic material such as cellophane impregnated with water in a water content of at least 10% by weight as the temporarily protecting covering sheet. The thus hydrated protecting covering sheet is peelable with a relatively small peeling force without affecting the sticking power of the sticky surface of the adhesive sheet material.

REFERENCES:
patent: 1883421 (1932-10-01), Stevens
patent: 2314146 (1943-03-01), Katz
patent: 2368140 (1945-01-01), Johnson
patent: 2599359 (1952-06-01), Banks et al.
patent: 3284276 (1966-11-01), Berenbaum et al.
patent: 3545643 (1970-12-01), Higgins et al.
patent: 4009319 (1977-02-01), Cline
patent: 4016328 (1977-04-01), Horning

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