Paperboard sheets with a scribed grid and a method for making th

Details Paperboard sheets with a scribed grid and a method for making th Paperboard sheets with a scribed grid and a method for making th

1989-05-02

1991-09-03

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428155, 428156, 428167, 428219, 428340, 4285375, 40616, 156250, 156254, 156271, 162109, 162120, 162194, 162197, B32B 300, B32B 3100, D21H 1100

Patent

active

050453785

ABSTRACT:
A scribed paperboard sheet and a method for its manufacture is characterized by scribing a plurality of parallel guidelines in a finished paperboard web while the web is being tensioned. Adjustable scribing knife assemblies are provided for simultaneously scribing both surfaces of the web, following which the web of scribed paperboard is cut into individual sheets. The depth of penetration and the lateral spacing of the scribing knives are controlled to define a particular scribed layout of lines in the surfaces of the paperboard sheets. Alternatively, a grid of guidelines may be scribed into the web by an embossed roller arranged adjacent a tension roller to define a nip through which the paperboard web passes.

REFERENCES:
patent: 2668786 (1954-02-01), Perry
patent: 2778658 (1957-01-01), Kaighin
patent: 3130412 (1964-04-01), Fox et al.
patent: 3214855 (1965-11-01), Winkler et al.
patent: 4407417 (1983-10-01), Boyle
patent: 4751115 (1988-06-01), Smith et al.
patent: 4854610 (1989-08-01), Kwiatek

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