Vapour dispensing device

A - Human Necessities – 61 – L

Patent

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Details

A61L 9/12 (2006.01) A01M 1/20 (2006.01) A61L 9/012 (2006.01) A61L 9/04 (2006.01) C08K 5/16 (2006.01) C08L 47/00 (2006.01)

Patent

CA 2348079

The present invention relates to a device for the diffusion of an active volatile substance into ambient air or closed spaces comprising a solid casing or housing and a solid carrier containing said volatile substance wherein said solid carrier is arranged in at least one recess formed in the housing, the at least one recess having a depth and a width which are chosen in relation to the composition of the solid carrier containing the active substance so that the ratio of the evaporation surface of the solid carrier to the mass of the solid carrier disposed within the said recess is such that a substantially constant vapour release rate and total evaporation of said active volatile substance during the active lifetime of the device is obtained. The recesses can be of various geometrical shapes in order to give a pleasant appearance. The active volatile substance can be a perfuming, deodorizing, sanitizing composition or an insect repellent.

L'invention concerne un dispositif pour la diffusion d'une substance volatile active dans l'air ambiant ou dans des espaces fermés, comprenant un boîtier ou une enveloppe solide et un support solide contenant ladite substance volatile, caractérisé en ce que ledit support solide est agencé dans au moins un évidement formé dans l'enveloppe, en ce qu'au moins cet évidement présente une profondeur et une largeur qui soient choisies en rapport avec la composition du support solide contenant la substance active, de telle sorte que le rapport de la surface d'évaporation du support solide, à la masse de ce support disposé dans ledit évidement soit tel qu'on obtienne un débit de vapeur sensiblement constant et une évaporation totale de ladite substance volatile active durant la durée de service du dispositif. Les évidements peuvent être de formes géométriques variées en vue de conférer à l'ensemble un aspect agréable. La substance volatile active peut être une composition parfumée, déodorante, désinfectante ou un produit repoussant les insectes.

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