Method and apparatus for folding printed/coated sheet material

Details Method and apparatus for folding printed/coated sheet material Method and apparatus for folding printed/coated sheet material

1989-10-23

1992-02-18

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Bending

Form-scoring

493403, 493470, B31F 110, B31B 125

Patent

active

050889737

ABSTRACT:
A method and apparatus for use with folding machines of the type having a score roll for scoring sheet material which has been coated and/or printed with ink and the like. The method includes, and the apparatus provides for, heating the score roll to a sufficiently high temperature (generally 150.degree.-400.degree. F.) for softening or otherwise tempering the coating material and/or ink for precluding, or minimizing, unsightly damage resulting from cracking of the coating during scoring and creasing, bending or folding of the sheet material along the score line.

REFERENCES:
patent: 3240611 (1966-03-01), Williams
patent: 3379814 (1968-04-01), Bracey
patent: 3981213 (1976-09-01), Lopman
patent: 4067761 (1978-01-01), Shirley
patent: 4179252 (1979-12-01), Seufert
patent: 4406648 (1983-09-01), Cavagna et al.
patent: 4586917 (1986-05-01), Robinson
patent: 4808150 (1989-02-01), Herrington et al.
patent: 4931031 (1990-06-01), Lisiecki
patent: 4936818 (1990-06-01), Holohan

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