Multi-layered insulated cup formed of one continuous sheet

Details Multi-layered insulated cup formed of one continuous sheet Multi-layered insulated cup formed of one continuous sheet

1996-08-16

1998-06-30

Elkins, Gary E.

Receptacles

Receptacle having flexible, removable inner liner

Means for venting air trapped between the liner and its...

220416, 229403, 493 76, 493108, 493111, 493152, B65D 322

Patent

active

RE0358304

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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