Container wall of paper and process for producing such a...

Details Container wall of paper and process for producing such a... Container wall of paper and process for producing such a...

2001-12-12

2010-06-29

Castellano, Stephen (Department: 3781)

Envelopes, wrappers, and paperboard boxes

Paper or paperboard cup

C229S004500

Reexamination Certificate

active

07743974

ABSTRACT:
A container wall of paper (10, 22) for a container with a predominantly circular or elliptic cross-section is disclosed. The paper is a highly extensible Kraft paper, preferably with an extension of 5% to 20%. The container wall (10, 22) has at least one inwards or outwards (12, 14, 16, 26) from the periphery (20, 14, 32) extending portion. The containers produced with the container wall may be bottles, cans, jars, disposable, cups, drinking glasses, barrels, and vases. Further, a process of producing a container wall of paper (10, 22) is described. In the process highly extensible Kraft paper is pressed between a hard form providing the shape of the container wall (10, 22), and a matching hard counter form; a soft flexible counter form which under pressure follows the shape of the hard form, and liquid or gas that under pressure forces the paper to follow the shape of the hard form.

REFERENCES:
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www.paperonweb.com, Pulp and Paper Dictionary, Oct. 24, 2006, pp. 1 and 28.
Japanese Examined Patent Publication No. 55-051781, “Food container and method for producing the same”, English translation.
Japanese Laid-open Patent Publication No. 58-099391, “Method for filling and hermetically sealing container at high temperature”, English translation.
Japanese Laid-open Patent Publication No. H10-94848, “Method for forming concave-convex pattern on side wall of seamless can”, English translation.
Japanese Laid-open Patent Publication No. H10-008394, “Press-molding paper and method for producing molded products by carrying out press-molding”, English translation.
Japanese Examined Patent Utility Model Publication No. S37-030596, “Elongatable composite web”, English translation.

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