Push-pull apparatus and method for web cutting and trim strip re

Cutting – With product handling means – By fluid current

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Details

83 24, 83100, 83123, 83346, B26D 718

Patent

active

051408805

ABSTRACT:
An improved device for cutting a single or multiple-layer continuous web is equipped with a closed-loop, fan-driven air system to "push" air onto the leading edge of the continuous web and "pull" air from about the knife edges to capture the waste material produced by the removal of blank portions. Chambers in the knife roll assembly direct positive air pressure continually to the leading edge for reliably guiding the web into subsequent machinery. Additional chambers direct suction to the waste material at the cutting operation to restrain the waste material within the knife roll assembly for most of the rotation of the knife assembly and to transport waste material to a disposal system including a cowl, which is maintained at a substantially greater suction.

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patent: 5036737 (1991-08-01), Glaser

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