Plastic containers with folded-over internal layers and methods

Details Plastic containers with folded-over internal layers and methods Plastic containers with folded-over internal layers and methods

1983-04-13

1985-11-19

Kittle, John E.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

215 1C, 264 451, 26432812, 264513, B65D 2300, B29D 504

Patent

active

045541906

ABSTRACT:
Injection molded and injection blow molded multi-layer plastic articles, parisons and containers are provided, which, in preferred embodiments are substantially rigid and have at least three layers wherein a portion of the marginal end portion of their internal layer is folded over within the marginal end portion of the side wall of the article, preferably in the flange if the article is a parison or container. The articles folded over portion can be toward the inside or the outside of the side wall. The articles, parison, and containers can be open-ended, or closed, for example, with end closures double seamed thereto or flexible lids secured thereto by an adherent, or heat seal, or other suitable means. The folded over portion and any not folded over portion of the internal layer preferably extends substantially uniformly into the marginal end portion of the side wall.

REFERENCES:
patent: 3978232 (1976-08-01), Dodsworth
patent: 4035466 (1977-07-01), Langecker

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