Process and apparatus for thermoforming a thermoplastic carton having an aperture therein for latching the cover
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United States of America Patent
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-
Sep 16, 1986
Grant Date -
N/A
app pub date -
Jul 12, 1984
filing date -
Jul 12, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apertures are formed in plastic resin sheet material during a thermoforming process by shearing the heated plastic sheet between shear members which have cooperating shear faces extending in two dimensions in a plane perpendicular to the direction of movement of the thermoforming dies. The resulting apertures have a three dimensional configuration.
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Cited Art Landscape
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