Polyurethane pad covering

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/40 (2006.01) A47B 21/03 (2006.01) A47G 9/00 (2006.01) B32B 27/02 (2006.01) B32B 27/12 (2006.01) D06N 3/00 (2006.01) D06N 3/14 (2006.01)

Patent

CA 2221698

A barrier fabric laminate for use as a coating for a gel filled article is provided. The barrier fabric laminate comprises a fluid impermeable film (17) and a polyurethane nonwoven web (3) which has a friction value of less than 200 g and a fabric hand of less than 200 g. The polyurethane web is formed of fibers of less than about 50 µm on average and preferably is formed with a fluorochemical melt additive by sequentially melt blowing the polyurethane web on a heated collecting drum (5) and laminated by a nip (4) formed by a heated nip roller (6) and the collecting drum.

L'invention concerne un stratifié constitué d'un tissu formant barrière, utilisé comme revêtement pour un article contenant un gel. Le stratifié en tissu formant barrière comprend une pellicule (7) imperméable aux fluides et une bande de non tissé (3) en polyuréthane qui a une valeur de frottement de moins de 200 g et une main de moins de 200 g. La bande en polyuréthane est formée de fibres de moins de 50 mu m environ en moyenne et, de préférence, est formée à l'aide d'un additif fluorochimique de fusion par fusion-soufflage séquentiel de la bande en polyuréthane sur un tambour collecteur chauffé (5) et stratifiée au niveau de la ligne de pinçage (4) formée par un rouleau de pinçage chauffé (6) et par le tambour collecteur.

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