Coating processes – With pretreatment of the base – Etching – swelling – or dissolving out part of the base
Patent
1987-08-21
1989-04-25
Bell, Janyce
Coating processes
With pretreatment of the base
Etching, swelling, or dissolving out part of the base
156 83, 427 35, 427 38, 427 39, 427 40, 427 41, 427 541, 427322, 4273855, B05D 310, B32B 3112
Patent
active
048246999
ABSTRACT:
The present invention relates to a process for adhering coatings directly to semicrystalline polymer films. The surface of the film is first rendered quasi-amorphous. The quasi-amorphous surface is then either (a) washed with a solvent for amorphous polyester and then coated or (b) coated and heated to a temperature to recrystallize the surface of the polymer. These treatments improve both the consistency and strength of the bond between the coating and the polymer surface.
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Woo Edward J.
Yorkgitis Elaine M.
Bell Janyce
Kirn Walter N.
Litman Mark A.
Minnesota Mining and Manufacturing Company
Sell Donald M.
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