Polyurethane elastomer organ bag of welded polyurethane film

Details Polyurethane elastomer organ bag of welded polyurethane film Polyurethane elastomer organ bag of welded polyurethane film

1995-06-07

1997-10-21

Dye, Rena

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 355, 428 43, 428136, 428194, 428200, 428213, 428220, 383 76, 383107, 383108, 383209, 128850, 128852, 128856, B65D 6528, B65D 3328

Patent

active

056794231

ABSTRACT:
A method of welding at least two layers of a thin thermoplastic polyurethane elastomer (10A, B) to form a weld seam (12) to produce polyurethane barrier products such as, but not limited to, gloves (20), condoms (30), inflatable catheter balloon cuffs (48A, B), ostomy pouches (50), organ bags (60), and instrument covers (70) through a process of pre-heating a sealing die platen, the at least two layers of the polyurethane (10A, B) softened while under pressure from the preheated die platen, followed by welding the at least two layers of polyurethane (10A, B) film by transmission of a radio-frequency energy to the film (10A, B) to produce a weld seam (12) and then allowing the weld seam (12) to cool, the resultant product having seam integrity.

REFERENCES:
patent: 2549039 (1951-01-01), Adams
patent: 4777066 (1988-10-01), White et al.
patent: 4810451 (1989-03-01), Ermert et al.
patent: 4925711 (1990-05-01), Akao et al.
patent: 5006380 (1991-04-01), Fraser
patent: 5037379 (1991-08-01), Clayman et al.
patent: 5169696 (1992-12-01), Lang et al.
patent: 5395681 (1995-03-01), Hargarter et al.

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