Radial line punch

Details Radial line punch Radial line punch

1975-08-20

1976-08-10

Yost, Frank T.

Cutting

Processes

Puncturing

83620, 83636, 83639, 83660, 83695, B26F 118

Patent

active

039734536

ABSTRACT:
A method and apparatus for the perforation of flexible film products, specifically flexible film bags wherein openings are provided for releasable retention of the bags on a wicket pin. Means are provided to form first and second openings, with said first opening comprising a plurality of spaced line slits intersecting generally at the mid-points thereof to form arcuately spaced wicket pin receiving sectors, and with one of said line slits being disposed generally parallel to the axis of the film bag. The second opening comprises a single line slit in projected continuation with that line slit of the first opening which is disposed parallel to the film bag axis, with the slit forming the second opening being disposed between the top open edge of the film bag and that line slit of the first opening which is parallel to the film bag axis.

REFERENCES:
patent: 3263547 (1966-08-01), Pfaff, Sr. et al.
patent: 3274869 (1966-09-01), Piazze
patent: 3802324 (1974-04-01), Izumi et al.
patent: 3898899 (1975-08-01), Weinstein

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