Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1998-03-23
2000-07-11
Hess, Bruce
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428195, 428331, 428500, 4289033, 428910, B32B 516
Patent
active
060869887
ABSTRACT:
A lidding material for use as a closure with a polyvinyl chloride (PVC) bottom in a push-through package is disclosed. The lidding material is totally recyclable with the bottom and has moisture vapor barrier characteristics which make it especially suitable for use in various industries where protection of stored products from environmentally based deterioration is desirable. The lidding material is comprised of a PVC base resin in a general purpose rigid PVC formulation bound together with two types of filler materials. The filler materials together regulate the frangibility of the lidding and enhance its moisture vapor barrier characteristic. In the preferred embodiment, for each 100 parts of base resin there are 50 parts of filler. In alternative embodiments, the amounts of fillers may be adjusted to vary the frangibility and other characteristics of the lidding.
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Grendzynski Michael E.
Hess Bruce
Kloeckner Pentaplast of America, Inc.
Roaden Peter E.
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