Photographic support

Details Photographic support Photographic support

1978-11-02

1980-12-09

Smith, William F.

Paper making and fiber liberation

Processes and products

Synthetic fiber

162206, 162207, 162188, 430538, O21H 520

Patent

active

042382807

ABSTRACT:
A photographic support is produced by heat consolidating paper made wholly of thermoplastic synthetic fibres. The consolidation is carried out in such a way as to produce a homogeneous surface film having a desired surface finish for receiving a photographic coating, a fully bonded but still fibrous layer adjacent the film, and a lightly bonded fibrous layer adjacent the fully bonded fibrous layer. The homogeneous surface film is produced in such a manner that its surface is substantially free of pits. This may be achieved by consolidating the web by heating it on one surface while cooling it on the other surface.

REFERENCES:
patent: 2999788 (1961-09-01), Morgan
patent: 3100733 (1963-08-01), Bundy
patent: 3635713 (1972-01-01), Van Paesschen
patent: 3702258 (1972-11-01), Gibbons et al.
"SWP" Crown Zellerbach Brochure, Jan. 24, 1972.
"SWP" Crown Zellerbach Brochure, Sep. 1974.

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