Robert C Schrader

US Patent:

49215566, May 1, 1990

Filed:

Nov 17, 1988

Appl. No.:

7/272271

Inventors:

Zbigniew Hakiel - Webster NY
Gerald G. Reafler - Rochester NY
Robert W. Schrader - Rochester NY
James R. Schuler - Brockport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B32B 3108

US Classification:

156164

Abstract:

A protective web is releasably laminated to an adhesive-coated stretchable web by continuously drawing the webs at differential degrees of tensile strain into laminating contact in the nip formed by a resilient and a non-resilient roller.

US Patent:

41417356, Feb 27, 1979

Filed:

Feb 18, 1977

Appl. No.:

5/770128

Inventors:

Robert W. Schrader - Rochester NY
John F. Carroll - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 152

US Classification:

96 75

Abstract:

A heat-tempered film element having a core-set curling tendency and a net core-set curl at least about 15% below that of a similar non-heat-tempered film element is provided by a process which comprises heating a sheet or roll of self-supporting, core-set-prone thermoplastic polymeric film, which is non-coated or is coated with one or more layers on at least one surface, under ambient relative humidity of less than 100%, at a temperature in the temperature range of from about 30. degree. C. up to about the glass transition temperature (Tg) of said polymer for 0. 1 to 1500 hours, said heating being continued until the change in the number of ANSI curl units that the resulting film undergoes upon subsequent core-setting at 21. degree. C. and 50% R. H. for 2200 hours is reduced by at least 15%, compared to the change in the number of ANSI curl units untreated thermoplastic polymer film undergoes upon core-setting under like conditions.