Antiallergenic covering for receiving objects contaminated...

A - Human Necessities – 47 – C

Patent

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Details

A47C 21/06 (2006.01) A44B 19/32 (2006.01) A47C 27/00 (2006.01) A47C 27/12 (2006.01) A47C 31/10 (2006.01) A47G 9/02 (2006.01) A47G 9/00 (2006.01)

Patent

CA 2314085

Disclosed is an antiallergenic covering for receiving objects and air contaminated with fine or very fine dust, house dust, mould fungus and allergens, i.e. the debris of house dust mites, more particularly all types of bedclothing and/or upholstery. Said covering comprises at least one strip (4) of woven or nonwoven material and a mechanical closure (1), i.e. a zipper, located in an embodiment blocking the entrance of allergens and very fine particles. Said covering is characterized in that the strip (4) consists of a fabric coated with a polyurethane/acrylate copolymer foam and compressed by calendering to a degree of entrapment of approximately 100 % for particles < 1µm and in that the zipper (1) is sealed in the inner side of the covering by the overlapping (2) of a sealing strip (3) formed by at least three plies of fabric (10-12).

L'invention concerne une enveloppe anti-allergénique destinée à recevoir des objets contaminés avec des poussières fines et très fines, des poussières de maison, des moisissures et des allergènes, par exemple des débris des acariens détriticoles, inhalables avec l'air, notamment la literie et/ou les meubles capitonnés de toute sorte. Cette enveloppe comporte au moins une bande (4) en tissu ou en non-tissé et une fermeture mécanique (1), telle qu'une fermeture éclair, et est réalisée dans une configuration bloquant la pénétration des allergènes et des particules très fines. Cette enveloppe est caractérisée en ce que la bande (4) est constituée de tissu revêtu de mousse de copolymère de polyuréthane/acrylate et comprimé par calandrage jusqu'à obtention d'un degré de piégeage d'approximativement 100 % pour des particules < 1 µm, et en ce que la fermeture éclair (1) est rendue étanche sur la face intérieure de l'enveloppe par pose à recouvrement (2) d'une garniture d'étanchéité (3) constituée d'au moins trois couches de tissu (10-12).

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