Method for removing insolubilized PVA from the surface of a body

Details Method for removing insolubilized PVA from the surface of a body Method for removing insolubilized PVA from the surface of a body

1982-10-27

1983-08-30

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

134 42, 1566611, 156668, 156904, 156644, 430 23, 430323, 430329, C23F 102, B44C 122, C03C 1500, C03C 2506

Patent

active

044015089

ABSTRACT:
In a method for removing insolubilized polyvinyl alcohol portions from the surface of a body on which it is adhered, the step of contacting said stencil and surface with an aqueous stripping solution containing at least one nonoxidizing mineral acid, such as hydrochloric acid and phosphoric acid, in concentration that is effective to remove said portions with at most light mechanical action.

REFERENCES:
patent: 3175907 (1965-03-01), Fishman
patent: 3415648 (1968-12-01), Certa
patent: 3796603 (1974-03-01), Cox et al.
patent: 4208242 (1980-06-01), Zampiello
patent: 4339528 (1982-07-01), Goldman
patent: 4339529 (1982-07-01), Goldman

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