Apparatus for forming a paperboard container

Details Apparatus for forming a paperboard container Apparatus for forming a paperboard container

1981-12-16

1983-05-03

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including shaping means comprising fluid pressure contacting...

B29C 1704

Patent

active

043819095

ABSTRACT:
Apparatus for forming a deep drawn paperboard container coated with a layer of grease and water impermeable polymeric material. A paperboard blank is disposed between and acted upon by a heated mandrel and a heated mold to form a container. The surface of the blank engageable by the mandrel bears the polymeric coating, and means are operative relatively to move the mandrel and mold toward one another, to engage, the blank, and, just prior to fully engaging the blank to set the same, to introduce a film of air between the heated mandrel and the polymer coated surface to ensure against sticking of the coating to the mandrel.

REFERENCES:
patent: 2899712 (1959-08-01), Smith
patent: 3113345 (1963-12-01), Butzko
patent: 3173174 (1965-03-01), Edwards
patent: 3321562 (1967-05-01), Wanderer
patent: 3357053 (1967-12-01), Lyon et al.
patent: 3488413 (1970-01-01), Watts, Jr.
patent: 3561057 (1971-02-01), Butzko
patent: 3933562 (1976-01-01), Cruckshank et al.
patent: 4026458 (1977-05-01), Morris et al.

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