Methods and means for manufacturing foam plastic containers and

Details Methods and means for manufacturing foam plastic containers and Methods and means for manufacturing foam plastic containers and

1976-03-10

1978-10-24

Whitby, Edward G.

Package making

Methods

Forming or partial forming a receptacle and subsequent filling

53559, 83158, 83408, 93 365R, 93 39C, 93 391R, 93 44, 93 551R, 93 84TW, 156 69, 156 88, 156203, 156256, 156264, 156443, 156523, 156556, 156583, 264 95, 264266, 264268, 264342R, 264DIG71, 425324R, 425385, 425388, 425403, 425501, 425DIG201, 4253241, B29C 2714

Patent

active

041214021

ABSTRACT:
Preprinted rectangular blanks of longitudinally stretch-oriented foam sheet material are formed into cylinders by a continuous folder and seamer and transferred onto mandrels on which they are shrunken by heat to assume the shape of the mandrel. In forming containers, means are provided to place bottom blanks on the mandrels prior to the loading of the cylinders thereon so as to shrink the cylinders to sidewall shapes overlying the bottom blanks. The top curl on containers such as drinking cups and food tubs is formed after shrink forming and the bottom seam of the container is also reinforced by ironing after shrink forming. A method of continuously forcing and filling containers on a continuous in-line basis is also provided.

REFERENCES:
patent: 2431697 (1947-12-01), Grau
patent: 3066562 (1962-12-01), Barnett et al.
patent: 3118800 (1964-01-01), Snelling
patent: 3345801 (1967-10-01), West
patent: 3495506 (1970-02-01), Plymale
patent: 3658615 (1972-04-01), Ambers
patent: 3967991 (1976-07-01), Shimano et al.
patent: 3969173 (1976-07-01), Amberg et al.

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