Stock material or miscellaneous articles – Sheet including cover or casing – Complete cover or casing
Patent
1990-12-17
1992-11-10
Ryan, Patrick J.
Stock material or miscellaneous articles
Sheet including cover or casing
Complete cover or casing
4289088, 4289133, 4285422, 4285426, B32B 302
Patent
active
051621410
ABSTRACT:
The adhesive system of the present invention is suitable for use in adhering an incompatible ink system to a polymeric film; particularly, adhering a lithographic ink or electrographic toner bonded to a floor covering. The polymeric sheet and incompatible ink have a primer layer interposed between them or the ink layer is encapsulated between the two primer layers. The primer may be solvent based or aqueous based and preferably includes a benzene derivative, ketone, acetate or nitroparaffin solvent or film former. The primer is compatible with the polymeric sheet and diffuses into the ink layer. The preferred solvent or film former includes methyl isobutyl ketone, methyl ethyl ketone, n-propyl acetate, isopropyl acetate, or N-methyl-2-pyrrolidone. The primer also includes a polyvinyl resin, acrylic resin, polyurethane resin or polyester resin, and optionally a pigment. To deter dot distortion of the ink, the primer should have a glass transition temperature (T.sub.g) of at least about 60.degree. C., and preferably at least about 100.degree. C.
REFERENCES:
patent: 3667983 (1972-06-01), Haggas
patent: 3808024 (1974-04-01), Witman
patent: 3958990 (1976-05-01), Parent
patent: 4701837 (1987-10-01), Sakaki et al.
patent: 4801497 (1989-01-01), Kono et al.
Davey Raymond G.
Hines Charles H.
Ko Kenneth K.
Lewicki, Jr. Walter J.
Putt Dean L.
Armstrong World Industries Inc.
Lee Kam F.
Ryan Patrick J.
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