Waterproof and breathable sole for shoes

Details Waterproof and breathable sole for shoes Waterproof and breathable sole for shoes

A - Human Necessities

43

B

A43B 7/12 (2006.01) A43B 7/06 (2006.01)

Patent

CA 2574798

A waterproof and breathable sole (10, 100, 200, 300) for shoes, which has a structure that comprises a lower layer (12, 112, 212, 312), which has at least one large through hole (13, 113, 313). Above the lower layer (12, 112, 212, 312), there is a mesh (15, 115, 315), arranged substantially so as to overlap at least the large through hole (13, 113, 313). A membrane (18,118, 318) made of a material that is impermeable to water and permeable to water vapor is associated in an upward region with respect to the mesh (15, 115, 315) at least at the large hole (13, 113, 313). The membrane (18, 118, 318) is joined hermetically at least perimetrically to at least one component of the sole (10, 100, 200, 300) in such a manner as to avoid the rise of liquids through the perimeter of the large hole (13, 113, 313). A perforated upper layer (20, 120, 320) is arranged above the membrane (18, 118, 318). The lower layer (12, 112, 212, 312) is overmolded on the mesh (15, 115, 315) and partially incorporates it.

L'invention concerne une semelle imperméable à l'eau et respirante (10, 100, 200, 300) pour chaussure, qui possède une structure comprenant une couche inférieure (12, 112, 212, 312) comportant au moins un grand trou traversant (13, 113, 313). Au-dessus de la couche inférieure (12, 112, 212, 312) est placée une couche maillée (15, 115, 315), agencée sensiblement pour chevaucher au moins le grand trou traversant précité (13, 113, 313). Une membrane (18,118, 318), réalisée dans un matériau imperméable à l'eau et perméable à la vapeur d'eau, est associée à la couche maillée (15, 115, 315) dans une région supérieure, au moins à l'emplacement du grand trou (13, 113, 313). La membrane (18, 118, 318) est hermétiquement unie à au moins un composant de la semelle (10, 100, 200, 300), au moins sur le périmètre de cette dernière, de manière à éviter que des liquides ne pénètrent à travers le périmètre du grand trou (13, 113, 313). Une couche supérieure perforée (20, 120, 320) est agencée au-dessus de la membrane (18, 118, 318). La couche inférieure (12, 112, 212, 312) est moulée par-dessus la couche maillée (15, 115, 315), laquelle est partiellement intégrée à la couche supérieure perforée.

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