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US 4,285,468 AGranted
Article for the dispensing of volatiles
OwnerSy Hymaninventor
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OwnerSy Hymaninventor
Estimating the term…
An article for the slow release of volatilizable substances, such as deodorizers, insecticides, repellants and the like, the article being formed from opposed outer and inner wall members joined along their peripheral portions to define a central reservoir portion for receiving and confining a volatile substance. The inner and outer wall member comprises a liquid non-porous but gas permeable flexible polymeric sheet material having an impermeable barrier layer releasably bonded to the outer surfaces thereof. In one embodiment the article is formed from a single strip folded and bonded to itself to form the reservoir. The barrier layer prevents escape of volatilized substance until its removal at the time of desired use. In a further aspect, a strippable adhesive layer is bonded to the outer surface of the second gas impermeable layer and removal of the stripable layer enables adhesive bonding of the article to environmental surfaces.
An article for the dispersion of a volatile substance to the surrounding atmosphere comprising a substantially liquid impervious, gas permeable polymeric layer, said layer being bonded so as to form a reservoir, a solid comprising a plurality of particulates comprising a polymeric matrix comprising a volatilizable substance in the matrix and being disposed in said reservoir, said matrix providing a controlled release of said volatilizable substance and being one selected from a varied concentration of said substance in said particulates and varied sized particulates, and a barrier removably adhesively attached to and covering the outer surface of said polymeric layer, whereby the volatilizable substance disperses from the particulates through the polymeric layer to the outer surface of the polymeric layer so that with the removal of the barrier layer the substance volatilizes from the exposed surface of the polymeric layer to the surrounding atmosphere.
An article for the dispersion of a volatile substance to the surrounding atmosphere comprising a substantially liquid impervious, gas permeable polymeric layer, said layer being bonded so as to form a reservoir, a solid comprising a plurality of particulates comprising a polymeric matrix comprising a volatilizable substance in the matrix and being disposed in said reservoir, said matrix providing a controlled release of said volatilizable substance and being one selected from a varied concentration of said substance and varied sized particulates, and a barrier removably adhesively attached to and covering the outer surface of said polymeric layer, whereby the volatilizable substance disperses through the polymeric layer to provide a liquid at the outer surface of the polymeric layer so as to attack and degrade the adhesive bond of the polymeric layer and barrier layer, so that said barrier layer is readily removale from the polymeric layer, and with the removal of the barrier layer the substance volatilizes from the exposed surface of the polymeric layer to the surrounding atmosphere.
Dependencies are inferred from the claim text.