Method for molding a curved flexible printing plate

Details Method for molding a curved flexible printing plate Method for molding a curved flexible printing plate

1976-01-27

1979-01-23

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264334, 425441, 425DIG5, B29C 700

Patent

active

041361504

ABSTRACT:
A flexible printing plate is separated from the inner surface of a curved matrix after formation of the plate in a mold by first moving the ends of the plate inwardly away from the matrix, while maintaining the center of the plate in stationary contact with the matrix, and then moving the center of the plate inwardly away from the matrix, while maintaining the ends of the plate away from the matrix. The matrix is held in an outer mold half, and the printing plate is formed in a mating inner mold half having a center section with sloping side surfaces that converge toward the outer mold half, a first end section having a side surface contiguous to one sloping side surface of the center section, and a second end section having a side surface contiguous to the other sloping side surface of the center section.

REFERENCES:
patent: 500682 (1893-07-01), Vallee
patent: 1036416 (1912-08-01), Aylsworth
patent: 2948031 (1960-08-01), Webb
patent: 3444288 (1969-05-01), Mead
patent: 3618170 (1971-11-01), Owens

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