Method for producing a double-walled paper container

Details Method for producing a double-walled paper container Method for producing a double-walled paper container

1980-08-11

1982-04-20

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

156108, 156212, 156287, 264522, 425504, B29C 1704, B29D 300, B32B 110

Patent

active

043259057

ABSTRACT:
A double-walled paper container produced by placing a preformed paper container in a shaping die set cavity of a vacuum draw shaping apparatus, positioning a single piece of synthetic resin film or sheet on the top of said paper container, holding the film at the peripheral edge thereof, heating the film to make the plastic film, stretching the film and applying negative pressure to the film to line said preformed paper container with the film is in water-tight fashion and wherein the lined paper container has a good shape holding ability and is hygienic for the user thereof.

REFERENCES:
patent: 2691797 (1954-10-01), Bertleff et al.
patent: 2736065 (1956-02-01), Wilcox
patent: 2985915 (1961-05-01), Winstead
patent: 3041669 (1962-07-01), Marshall et al.
patent: 3042969 (1962-07-01), Shaul
patent: 3169086 (1965-02-01), Meissner
patent: 3453162 (1969-07-01), Turner
patent: 3528865 (1970-09-01), Amberg et al.
patent: 3533135 (1970-10-01), Christensson
patent: 3654012 (1972-04-01), Schlager
patent: 3893882 (1975-07-01), Repenning

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