Abstract: A multilayer structure (1) for volatile substances diffusers includes a semi-permeable layer (2) that can be in contact with the volatile substances and a barrier layer (3) to prevent the diffusion of the volatile substances before removal of the barrier layer from the multilayer structure. The multilayer structure also comprises a tear layer (4) placed between the barrier layer (3) and the semi-permeable layer (2), which permits the separation of the barrier layer (3) from the semi-permeable layer (2) when the barrier layer (3) is removed from the multilayer structure (1). The tear layer provides a suitable interface strength between the barrier layer and the semi-permeable layer and allows for the secure and easy removal of the barrier layer from the semi-permeable layer.

Abstract: An apparatus for delivering a volatile material in a continuous manner is disclosed. The apparatus includes a delivery engine having a reservoir for containing a volatile material; a rupturable substrate secured to the reservoir; a rupture element positioned adjacent to the rupturable substrate; and a breathable membrane enclosing the reservoir, rupturable substrate and rupture element. In some embodiments, the apparatus includes a housing having a notch for compressing the rupture element and breaching the rupturable substrate as it is inserted into the housing.

Abstract: A long life mat impregnated with insect repellant is provided which has greater concentration that prior art mats in the area above a heated sole plate in prior art volatilizable insecticide repellant devices.

Abstract: A water soluble pellet for releasing one or more actives including a vegetable soap carrier in an amount of 10-95 wt %; a perfume oil in an amount of 2-12 wt %; and a dye in an amount of 0.001 to 0.5 wt %. The method for manufacturing the water soluble pellet includes the following steps: mixing the composition; extruding the composition; and cutting the extruded composition to form water soluble pellets.

Abstract: A method of delivering a volatile material to the atmosphere in a continuous manner is disclosed. The method includes providing a delivery engine having a reservoir that includes a volatile material mixture. The volatile material mixture includes about 40% to about 100%, by total weight, of the volatile materials each having a vapor pressure at 25° C. of less than about 0.1 torr. The delivery system also includes a microporous membrane enclosing the reservoir, wherein the microporous membrane comprises an average pore size of about 0.01 to about 0.03 microns.

Abstract: A method of delivering a volatile material to the atmosphere in a continuous manner is disclosed. The method includes providing a delivery engine having a reservoir that includes a volatile material mixture. The volatile material mixture includes about 40% to about 100%, by total weight, of the volatile materials each having a vapor pressure at 25° C. of less than about 0.1 torr. The delivery system also includes a microporous membrane enclosing the reservoir, wherein the microporous membrane comprises an average pore size of about 0.01 to about 0.03 microns.

Abstract: The container comprises a chamber closed by a flexible cover, and it is characterized in that said flexible cover defines a weakened area forming a seal between the chamber and the flexible cover, and in that the container comprises bending means for bending this weakened area so that the flexible cover separates from the chamber at the weakened area, opening said chamber. The container has the main advantage that it can be opened easily, just acting on the bending means.

Abstract: A volatile substance evaporation element including a rod impregnated with volatile substances, the rod being made of sintered wood. The porosity of the rod varies between its core and its surface, the porosity of said rod being lower on its surface than in its core, making it possible to increase the capacity of the core of the evaporation element to act as a receptacle for volatile substances.

Abstract: An electrical heating evaporator for evaporating active substances such as perfumes and/or insecticides, in which the evaporation rate regulator includes an electrical heater resistor for which the power supplied is regulated through a potentiometer constructed on a printed circuit board. The evaporation rate can be adjusted for a wide variety of types of chemical substances, without the need of substantially modifying the design of the device.

Abstract: Device for evaporating volatile substances including a container for a liquid that contains volatile substances and means for evaporating the volatile substances, where the means for evaporating the volatile substances include two semipermeable membranes, such that the device allows the optimisation of the evaporation of the volatile substances present in the liquid, doubling the evaporation surface thereof compared to conventional devices, and increases the user's perception of the amount of liquid evaporated.

Abstract: A method to evaporate active ingredients from a liquid solution, in which said liquid solution includes a solvent and at least one type of active ingredient, the method including dispensing in controlled time periods doses of said liquid solution on a liquid retaining support, where the solvent is evaporated from the support such that only the active ingredient remains on the support, and where the active ingredient is evaporated from the support after most of the solvent has evaporated.

Abstract: A method of delivering a volatile material to the atmosphere in a continuous manner is disclosed. The method includes providing a delivery engine having a reservoir that includes a volatile material mixture. The volatile material mixture includes about 40% to about 100%, by total weight, of the volatile materials each having a vapor pressure at 25° C. of less than about 0.1 torr. The delivery system also includes a microporous membrane enclosing the reservoir, wherein the microporous membrane comprises an average pore size of about 0.01 to about 0.03 microns.

Abstract: An apparatus for delivering a volatile material in a continuous manner is disclosed. The apparatus includes a delivery engine having a reservoir for containing a volatile material; a rupturable substrate secured to the reservoir; a rupture element positioned adjacent to the rupturable substrate; and a breathable membrane enclosing the reservoir, rupturable substrate and rupture element. In some embodiments, the apparatus includes a housing having a notch for compressing the rupture element and breaching the rupturable substrate as it is inserted into the housing.

Abstract: A method of delivering a volatile material to the atmosphere in a continuous manner is disclosed. The method includes providing a delivery engine having a reservoir that includes a volatile material mixture. The volatile material mixture includes about 40% to about 100%, by total weight, of the volatile materials each having a vapor pressure at 25° C. of less than about 0.1 torr. The delivery system also includes a microporous membrane enclosing the reservoir, wherein the microporous membrane comprises an average pore size of about 0.01 to about 0.03 microns.

Abstract: An apparatus for delivering a volatile material in a continuous manner is disclosed. The apparatus includes a delivery engine having a reservoir for containing a volatile material; a rupturable substrate secured to the reservoir; a rupture element positioned adjacent to the rupturable substrate; and a breathable membrane enclosing the reservoir, rupturable substrate and rupture element. In some embodiments, the apparatus includes a housing having a notch for compressing the rupture element and breaching the rupturable substrate as it is inserted into the housing.

Abstract: The container comprises a chamber closed by a flexible cover, and it is characterized in that said flexible cover defines a weakened area forming a seal between the chamber and the flexible cover, and in that the container comprises bending means for bending this weakened area so that the flexible cover separates from the chamber at the weakened area, opening said chamber. The container has the main advantage that it can be opened easily, just acting on the bending means.

Abstract: A method of delivering a volatile material to the atmosphere in a continuous manner is disclosed. The method includes providing a delivery engine having a reservoir that includes a volatile material mixture. The volatile material mixture includes about 40% to about 100%, by total weight, of the volatile materials each having a vapor pressure at 25° C. of less than about 0.1 torr. The delivery system also includes a microporous membrane enclosing the reservoir, wherein the microporous membrane comprises an average pore size of about 0.01 to about 0.03 microns.

Abstract: A method of delivering a volatile material to the atmosphere in a continuous manner is disclosed. The method includes providing a delivery engine having a reservoir that includes a volatile material mixture. The volatile material mixture includes about 40% to about 100%, by total weight, of the volatile materials each having a vapor pressure at 25° C. of less than about 0.1 torr. The delivery system also includes a microporous membrane enclosing the reservoir, wherein the microporous membrane comprises an average pore size of about 0.01 to about 0.03 microns.

Abstract: A method to evaporate active ingredients from a liquid solution, in which said liquid solution includes a solvent and at least one type of active ingredient, the method including dispensing in controlled time periods doses of said liquid solution on a liquid retaining support, where the solvent is evaporated from the support such that only the active ingredient remains on the support, and where the active ingredient is evaporated from the support after most of the solvent has evaporated.

Abstract: A long life mat impregnated with insect repellant is provided which has greater concentration that prior art mats in the area above a heated sole plate in prior art volatilizable insecticide repellant devices.