Method and apparatus for severing a paper web, particularly perf

Details Method and apparatus for severing a paper web, particularly perf Method and apparatus for severing a paper web, particularly perf

1988-07-01

1990-08-07

Phan, Hien H.

Severing by tearing or breaking

Methods

Transversely of continuously fed work

225 93, 225100, 225105, B26F 302, B65H 3510

Patent

active

049460862

ABSTRACT:
A method and an apparatus for severing a perforated web involves clamping the web (4) by two clamping members (6, 7) extending essentially transversely over the web (4) against an anvil (1) placed on the opposite side of the web (4) so as to leave a perforated line (5) of the web aligned between the clamping members (6,7). The clamped web is then tensioned by allowing a tensioning member (2) located between the clamping members (6,7) to expand toward a backing bight (20, 21) formed behind the web (4) thus causing the web (4) to be severed at the perforation (5) with the help of tensile stress.

REFERENCES:
patent: 3615047 (1971-10-01), Feldman et al.
patent: 3794228 (1974-02-01), Colwill et al.
patent: 3863821 (1975-02-01), Van Bennekom

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