Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1992-11-02
1994-08-30
Reddick, Judy M.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
428292, 428352, 428355, 524 55, 524145, C08K 552
Patent
active
053428722
ABSTRACT:
Recoverable, peelable masking films prepared from an aqueous emulsion of polyvinyl acetate resins are disclosed. The aqueous composition is an admixture about 70 to 80 wt-% an aqueous vehicle; about 20 to 30 wt-% of a polyvinyl acetate film-forming resin; about 0.1 to 5 wt-% of a plasticizer; about 0.1 to 5 wt-% of a water soluble polysaccharide gum; less than about 1 wt-% of an emulsifiable thickening agent; about 0.01 to 1 wt-% of a release agent to render a film formed from the aqueous composition peelable from a substrate; and about 0.1 to 1 wt-% of a defoaming agent. The composition can then be dried to form a peelable film consisting essentially of a single layer comprising about 70 to 99 wt-% of polyvinyl acetate resin; about 0.1 to 15 wt-% a water soluble polysaccharide gum; about 0.1 to 15 wt-% of a emulsifiable thickening agent; and about 0.01 to 5 wt-% of a release agent to render a film formed from an aqueous composition peelable from a substrate. The aqueous, film-forming composition is reformable by adding a sufficient quantity of water to the dried film.
In addition, the composition can be formed into a pressure sensitive masking film consisting essentially of a single layer of the film. The film can be formed into rolls of tape or stencil sheets. Also, the film can be packaged for shipment and reformulated by a customer or user by reconstitution with an aqueous vehicle.
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Grip-Mask Strippable Coating Product Data Sheet, pp. 57-58.
"Product Review", Sign Builder Illustrated, pp. 32-33 (Sep.-Oct. 1992).
Quality Manufacturing Incorporated
Reddick Judy M.
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