Bi-stable fastening

Details Bi-stable fastening Bi-stable fastening

A - Human Necessities

44

B

A44B 18/00 (2006.01)

Patent

CA 2446750

A bi-stable hook component (20) of a touch fastener can bend into, and remain in, a stable concave position. Another stable position enables initial engagement with a mating component (e.g., a loop component 22). The concave position applies engagement-enhancing tension to the engaged loops (28), and in some cases forces end portions (38) of the hooks (24) into close proximity with one another to secure the fastening and to produce a curved touch fastener that, as engaged, can better conform to an underlying curved surface, such as the contour of a wearer's body. Absorbent articles are provided with such a bi-stable fastening system (48).

L'invention concerne un élément à crochet bistable (20) d'un organe de fixation préhenseur, qui peut plier dans une position concave stable et rester dans cette position. Une autre position stable permet à l'élément d'entrer en prise avec un élément homologue (p. ex. un élément à boucle (22)). Cette position concave exerce une tension de renforcement de la prise sur les boucles en prise (28) et, dans certains cas, force les extrémités (38) des crochets (24) à se rapprocher les unes des autres pour renforcer la fixation et conférer à l'organe de fixation préhenseur une forme arquée qui, dans la configuration de prise, convient mieux pour une surface arciforme sous-jacente, telle que le contour du corps d'un porteur. L'invention concerne en outre des articles absorbants munis dudit système de fixation bistable (48).

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