Rechargeable aerosol can using air as the propellant

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 83/42 (2006.01) B65D 83/14 (2006.01) B65D 83/34 (2006.01) B65D 83/62 (2006.01)

Patent

CA 2155546

An aerosol can comprising a rigid housing (11), a lid (12), a valve (13) arranged on the lid, and a flexible bag (14) connected to the valve and containing the substance to be dispensed. The valve comprises a discharge channel (19) through which the substance to be dispensed is fed, and a side air inlet (20). Said valve further comprises a mixing device (100) interconnecting the side pressurised air inlet and the discharge channel to form a uniform air/substance mixture. The valve can be placed in a series of positions, i.e. a closed position in which the channel and inlet are sealed, a flushing position in which only the inlet is open, and an operative position in which both the channel and the inlet are open. In the flushing position, air is expelled through the outlet to remove the substance remaining therein.

La boîte d'aérosol comporte un boîtier rigide (11), un couvercle (12), une valve (13) montée sur le couvercle et une poche souple (14) liée à la valve et contenant un produit à pulvériser. La valve comporte un conduit d'évacuation (19) amenant le produit à pulvériser, et un passage latéral (20) amenant l'air. La valve comporte en outre un dispositif mélangeur (100) permettant la communication entre le passage latéral d'air sous pression et le conduit d'évacuation du produit de façon à réaliser un mélange homogène du produit et de l'air. La valve peut être placée successivement dans une position fermée où le conduit et le passage sont fermés, dans une position de purge où seul le passage est ouvert, et dans une position d'utilisation où le conduit et le passage sont ouverts. Dans la position de purge, de l'air est éjecté par la canule de sortie ce qui évacue les résidus de produits.

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