초록 ▼

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

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.

대표청구항 ▼

[ I claim:] [24.] A thermally insulated container, comprising:an outer shell,an inner shell concentrically positioned within said outer shell,a deformed layer sandwiched between said outer shell and said inner shell, anda bottom closure attached to a bottom portion of said inner shell,said outer she

[ I claim:] [24.] A thermally insulated container, comprising:an outer shell,an inner shell concentrically positioned within said outer shell,a deformed layer sandwiched between said outer shell and said inner shell, anda bottom closure attached to a bottom portion of said inner shell,said outer shell, said inner shell, and said deformed layer all formed of one continuous elongated sheet,whereby said outer shell, said deformed layer, and said inner shell cooperate to define plural air pockets therebetween for providing thermal insulation for any material disposed within said container, yet said container is easy and economical to fabricate. .Iaddend..Iadd.