Dual perforation of scrim-reinforced webs

Details Dual perforation of scrim-reinforced webs Dual perforation of scrim-reinforced webs

1987-06-02

1988-04-12

Bell, James J.

Stock material or miscellaneous articles

Sheet, web, or layer weakened to permit separation through...

428105, 428107, 428109, 428131, 428136, 428137, 428224, 428284, B65D 6528

Patent

active

047373938

ABSTRACT:
There is disclosed a scrim-reinforced web which is divided into individual sheets by a perforation pattern across the web. In order to insure all scrim filaments running lengthwise are severed, a dual perforation pattern is used. The dual perforation pattern has a primary perforation pattern with alternating, unsevered primary bond portions and primary perforations and a secondary perforation pattern with unsevered secondary bond portions and secondary perforations. The secondary perforations are spaced lengthwise from the primary perforation pattern, are aligned with, and overlap the unsevered primary bond portions.

REFERENCES:
patent: 3205750 (1965-09-01), Strange
patent: 3255648 (1966-06-01), Buttery
patent: 3268136 (1966-08-01), Huffman
patent: 3716132 (1973-02-01), Lewyckyj
patent: 3835754 (1974-09-01), Lewyckyj

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