One piece foam cup

Details One piece foam cup One piece foam cup

1977-02-23

1978-08-22

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Box material includes a coating or a nonpaperboard...

B65D 2102, B65D 310

Patent

active

041083474

ABSTRACT:
A container manufactured from a single piece of foamed plastic sheet material. A simplified process for producing a one-piece container from foamed sheet material. The process including the creation of a container blank from sheet stock, forming a cylinder and through controlled heat shrinking, forming a cup blank that is pressed to final configuration.

REFERENCES:
patent: 2431537 (1947-11-01), Bogoslowsky
patent: 3505310 (1970-03-01), Goetz
patent: 3531555 (1970-09-01), Tiffin et al.
patent: 3589592 (1971-06-01), Tigner
patent: 3931380 (1976-01-01), Belivakici et al.
patent: 3970492 (1976-07-01), Amberg
patent: 3971471 (1976-07-01), Ludder
patent: 3995740 (1976-12-01), Amberg et al.

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