Method for forming a transparent protective coating on a photogr

Details Method for forming a transparent protective coating on a photogr Method for forming a transparent protective coating on a photogr

1975-07-08

1977-11-29

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156230, 156238, 156495, 427148, 427152, B32B 3120

Patent

active

040604411

ABSTRACT:
A releasing layer is formed on a heat resistant backing sheet and a transparent thermal bonding layer is formed on top of the releasing layer to provide a coating material. The sheet of material such as photograph is mated with the coating material. When the sheet material is a photograph its emulsion side contacts the bonding layer and is passed through a heated roller assembly to bond the bonding layer to the photograph. The backing sheet and the releasing layer are then separated from the sheet material or photograph and bonding layer.

REFERENCES:
patent: 2417060 (1947-03-01), Capstaff
patent: 2556078 (1951-06-01), Francis, Jr.
patent: 3511732 (1970-05-01), Brookfield et al.
patent: 3575754 (1971-04-01), Duerden et al.

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