Apparatus for scoring rigid plastic sheet material
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United States of America Patent
Stats
-
Oct 31, 1989
Issued Date -
N/A
app pub date -
Aug 18, 1988
filing date -
Aug 11, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for forming frangible score lines in rigid plastic sheet material. The apparatus utilizes a flat surface having a serrated edge having points and notches. The rigid plastic sheet material is laid on the flat surface. A scoring means is positioned to strike downwardly on the sheet material whereby the points of the serrated edge of the flat surface will extend into the sheet material a distance further than the notches of the serrated edge to thus form a corrugated fracturable score line in the plastic sheet material. The apparatus is useful for forming score lines in lids for drink cups intended for fast food service.
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Cited Art Landscape
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