Plastic article or earthenware shaping or treating: apparatus – Means treating shaped work – In or on work confining surface
Patent
1981-09-29
1984-01-31
Czaja, Donald E.
Plastic article or earthenware shaping or treating: apparatus
Means treating shaped work
In or on work confining surface
2642101, 264216, 264280, 264345, 264348, 264556, 425 66, 425224, 425404, 425445, B29C 2500, B29D 720
Patent
active
044287240
ABSTRACT:
Sheets of organic thermoplastic polymeric film are contacted with processing rolls having a microgrooved surface to reduce the air layer therebetween, thereby aiding heat transfer between film and roll and consequently increasing processing speed.
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U.S. Ser. No. 417,594, filed Nov. 20, 1973, by Whitfield.
Czaja Donald E.
E. I. Du Pont de Nemours and Company
Housel James C.
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