Method of producing a support for photographic paper

Details Method of producing a support for photographic paper Method of producing a support for photographic paper

1988-10-24

1990-01-23

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Layered, stratified traversely of length, or multiphase...

26421123, 264216, 264349, 425204, 427391, 430538, B29C 4706, B29C 4740, B32B 2710, B32B 3130

Patent

active

048956880

ABSTRACT:
A support for photographic paper is produced by a method including the steps of coating one or two surfaces of a substrate sheet with a resinous melt includes a water-proof thermoplastic polymer and a pigment, by a melt-extrude-coating method, and solidifying the coating layer of the resinous melt on the substrate sheet, and wherein at least one melt-kneading procedure is applied to the resinous melt in a melt extruder having a pair of biaxial screws engaged with each other and satisfying the relationship (i)

REFERENCES:
patent: 3382536 (1968-05-01), Fritsch et al.
patent: 4113822 (1978-09-01), Takiura et al.
patent: 4447524 (1984-05-01), Uno et al.
patent: 4513050 (1985-04-01), Akao
patent: 4663103 (1987-05-01), McCullough et al.

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