Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1978-07-19
1980-04-15
Lawrence, Evan K.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
427198, 427244, 427270, 427276, 427373, 428161, 428195, 428203, 428285, 428304, 428315, B32B 326, B05D 500
Patent
active
041984560
ABSTRACT:
The process for making a cellular surface covering having a multi-level embossed decorative wear surface by applying to a porous substrate a plurality of thermoplastic resinous inks developed from thermoplastic binders having different molecular weights and therefore different melt viscosities, the inks and substrate comprising a composite structure which also includes a blowing agent. The blowing agent may be either in the substrate or in the inks applied thereto. Upon final heating to fuse and foam all the resinous material of this structure, the metal viscosity differences of the resins in the inks provide varying degrees of physical resistance to expansion of the total system in the inked areas, thus producing multi-level design areas on the final product.
REFERENCES:
patent: 3453171 (1969-07-01), Crowley
patent: 3490985 (1970-01-01), Marzocchi et al.
patent: 3968275 (1976-07-01), Dees, Jr. et al.
patent: 4068030 (1978-01-01), Witman
patent: 4090007 (1978-05-01), Crowley
Adams Kim M.
Dees, Jr. Martin
Mazzur Richard P.
Armstrong Cork Company
Lawrence Evan K.
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