Apparatus to form a flat-topped rim on a thin-walled foam plasti

Details Apparatus to form a flat-topped rim on a thin-walled foam plasti Apparatus to form a flat-topped rim on a thin-walled foam plasti

1979-10-26

1981-08-04

Anderson, Philip

Plastic article or earthenware shaping or treating: apparatus

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

Convoluting or twisting means

264230, 264296, 264321, 264DIG71, 425319, 425393, 425817R, B29C 1700, B29D 2700

Patent

active

042819792

ABSTRACT:
Apparatus for forming the rim on a foam plastic container such as a cup by use of a segmented rim former. The cavity in the rim former is contoured so as to produce a curled rim that is flat on the top. The flat top of the rim is parallel to the bottom of the cup.
The apparatus comprises a segmented rim former with a combination of linear and curved surfaces that form a noncircular container rim.

REFERENCES:
patent: 3065677 (1962-11-01), Loeser
patent: 3096546 (1963-07-01), Edwards
patent: 3271503 (1966-09-01), Shelby
patent: 3357053 (1967-12-01), Lyon et al.
patent: 3373238 (1968-03-01), Powers et al.
patent: 3557275 (1971-01-01), Longshaw et al.
patent: 3917788 (1975-11-01), Padovani
patent: 4071598 (1978-01-01), Meadors
patent: 4121402 (1978-10-01), Cress et al.

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