Multi-layered insulated cup formed of one continuous sheet
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United States of America
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Jun 30, 1998
Grant Date -
N/A
app pub date -
Aug 16, 1996
filing date -
Mar 7, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A thermally insulated cup or container (30) includes a smooth outer shell (12S), a smooth inner shell (13S), a corrugated layer (11L) sandwiched therebetween, and a bottom closure (14). The inner shell, corrugated layer, and outer shell are formed by simply winding a continuous elongated paper sheet (10) in a three-layered spiral, then sealing them together. The corrugated layer forms many air pockets between the shells to thermally insulate the contents of the cup, and also provide structural strength. The paper construction of the cup makes it biodegradable and recyclable, and the simple construction method of the cup makes it easy and inexpensive to manufacture.
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Cited Art Landscape
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