Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1986-02-27
1987-06-02
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156645, 156668, 1563071, 1563086, 428421, B44C 122, B29C 3700, B32B 3100
Patent
active
046700897
ABSTRACT:
A method of bonding a fluoroplastic material to a preselected surface of a metal substrate is disclosed. The method comprises: providing a flexible film, tape or sheet comprised of a fluoroplastic material which expands when heated; etching one side of the fluoroplastic film, tape or sheet; providing a flexible adhesive laminate having a surface layer comprised of a thermosetting adhesive film adhered to a non-adhesive and removable backing; treating the surface layer with a solvent to render it tacky; joining the tacky surface to the etched surface of the fluoroplastic film under pressure to form a laminate; cutting a shape from the laminate which replicates the shape of the preselected surface of the metal substrate; removing the non-adhesive backing from the laminate shape to expose the thermosetting adhesive film layer; covering the preselected surface of the metal substrate with the exposed adhesive film layer of the laminate; restraining the laminate from lateral expansion while heating the laminate to a temperature which thermosets the adhesive film and expands the fluoroplastic, for a time period sufficient to bond the fluoroplastic material to the preselected surface of the metal substrate.
REFERENCES:
patent: 3067078 (1962-12-01), Gluck
patent: 3411965 (1968-11-01), Hobaica
patent: 4465547 (1984-08-01), Belke et al.
Dixon Industries Corporation
Powell William A.
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