Method for preparing a plastic relief printing plate

Details Method for preparing a plastic relief printing plate Method for preparing a plastic relief printing plate

1973-12-14

1976-01-13

Whitby, Edward G.

Printing

Printing members

Blanks and processes

101426, 156 78, 260 25P, 260 25H, 260 37R, 260 41R, 264 54, 264220, 264321, 264 53, 252513, B41D 304

Patent

active

039317625

ABSTRACT:
When a thermoplastic resin sheet such as polyethylene, polypropylene, polystyrene, ABS or polyvinyl chloride resin sheet which contains 0 - 80 % by weight of an inorganic filler and has a foaming ratio (a) of 1 or 1 < a .ltoreq. 4 and which satisfies the relation 130 .gtoreq. 20a + b .gtoreq. 30 (wherein "a" is the foaming ratio and "b" is amount of the inorganic filler) is pressed onto a matrix in such a manner that the thickness of said resin sheet before pressing is larger than the thickness of the convex portions of the resultant resin relief plate, thus obtained relief plate has excellent printability.

REFERENCES:
patent: 3031959 (1962-05-01), Libberton
patent: 3221654 (1965-12-01), Jernt
patent: 3408437 (1968-10-01), Wheeler et al.
patent: 3463687 (1969-08-01), Folsom et al.
patent: 3589961 (1971-06-01), Fordyer et al.

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