Prefabricated plastic tube and process for producing...

Details Prefabricated plastic tube and process for producing... Prefabricated plastic tube and process for producing...

2005-09-20

2005-09-20

Rayford, Sandra Nolan (Department: 1772)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C428S036900, C428S043000

Reexamination Certificate

active

06946044

ABSTRACT:
A plastic tube is prefabricated for producing gas-filled filling bodies. The tube comprises an upper film and a lower film which are connected together in superposed relationship along both of their longitudinal edges. The upper film is divided in its center by a longitudinal cut, thus forming upstanding flaps on both sides of the cut. The films are also subdivided into individual pockets by weld seams extending in the transverse direction of the tube at a spacing from each other. The tube can be filled by introducing a filling gas under the film flaps, the open ends of the pockets being closed after they have been inflated in that way.

REFERENCES:
patent: 5693163 (1997-12-01), Hoover et al.
patent: 6213167 (2001-04-01), Greenland
patent: 19913408 (2000-10-01), None
patent: WO97 46453 (1997-12-01), None
patent: WO01 85434 (2001-11-01), None
patent: WO 2003051742 (2003-06-01), None

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