Reusable core for paper rolls
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United States of America Patent
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-
Dec 1, 1992
Grant Date -
N/A
app pub date -
Apr 19, 1991
filing date -
Apr 19, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multiple ply tubular core having continuous vapor barrier layers near the inner and outer surfaces of the tube. The vapor barrier layers have overlying and underlying layers comprising fibrous cellulosic material. The tube is stable to dimensional changes caused by absorption or loss of moisture to the atmosphere.
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