A container comprises a body of plastics material with a “bag-on-valve” arrangement. The bag depends from a valve and contains a post-foaming gel cleansing composition. A propellant is provided in the container outside the bag, so as to exert a pressure on the post-foaming gel cleansing composition in the bag, such that when the valve stem is depressed to open the valve the post-foaming gel cleansing composition is expelled through the valve stem. The container comprises a cap and the cap is provided with a conduit therethrough to guide the composition from the valve stem to an exit orifice. The conduit comprises an expansion chamber for receiving the composition from the valve stem, a neck having a smaller diameter than the expansion chamber for receiving the composition from the expansion chamber, and a nozzle provided with an exit orifice and having a diameter larger than the neck.

A container comprises a body of plastics material with a “bag-on-valve” arrangement. The bag depends from a valve and contains a post-foaming gel cleansing composition. A propellant is provided in the container outside the bag, so as to exert a pressure on the post-foaming gel cleansing composition in the bag, such that when the valve stem is depressed to open the valve the post-foaming gel cleansing composition is expelled through the valve stem. The container comprises a cap and the cap is provided with a conduit therethrough to guide the composition from the valve stem to an exit orifice. The conduit comprises an expansion chamber for receiving the composition from the valve stem, a neck having a smaller diameter than the expansion chamber for receiving the composition from the expansion chamber, and a nozzle provided with an exit orifice and having a diameter larger than the neck.

A method for releasing residual pressurized fluid from an aerosol canister, said method comprising the manual opening of a vent assembly (614) for said canister (600), the vent assembly (614) comprising first (615) and second (616) members and a receiving part (617), the receiving part (617) having an outer surface configured to form a fluid seal against an edge of a hole in the canister (600), and an internal volume having a longitudinal axis, the second member (616) disposed within the internal volume of the receiving part (617) and configured for linear translation along the longitudinal axis relative to the receiving part (617), the first member (615) rotatably engaged with the second member (616), rotation of the first member (615) relative to the second member (616) configured to impart translation of the second member (616) along the longitudinal axis such that, in a first position, the second member (616) forms a fluid seal against the receiving part (617) and, in a second position, a fluid passage is formed between the second member (616) and an inner surface of the receiving part (617).

A method for releasing residual pressurized fluid from an aerosol canister, said method comprising the manual opening of a vent assembly (614) for said canister (600), the vent assembly (614) comprising first (615) and second (616) members and a receiving part (617), the receiving part (617) having an outer surface configured to form a fluid seal against an edge of a hole in the canister (600), and an internal volume having a longitudinal axis, the second member (616) disposed within the internal volume of the receiving part (617) and configured for linear translation along the longitudinal axis relative to the receiving part (617), the first member (615) rotatably engaged with the second member (616), rotation of the first member (615) relative to the second member (616) configured to impart translation of the second member (616) along the longitudinal axis such that, in a first position, the second member (616) forms a fluid seal against the receiving part (617) and, in a second position, a fluid passage is formed between the second member (616) and an inner surface of the receiving part (617).

A spray delivery system with minimal pressure loss can is used with an aerosol container having a valve. The system includes a vertically extending conduit having an opening at a lowermost end conduit and two openings through a surface at an opposite end. The surface is disposed at an angle relative to a vertical. The system also has a first horizontally extending conduit communicating with the vertically extending conduit though one of the two openings and a second horizontally extending conduit fluidly communicating with the vertically extending conduit though the other one of the two openings. A manifold defines an inner annular volume and fluidly communicates with the first and second horizontally extending conduits. A spray nozzle insert is in fluid communication with the manifold. The spray nozzle insert has a plurality of blades that radiate inward and connect with a center round well having a sharp end.

A spray delivery system with minimal pressure loss can is used with an aerosol container having a valve. The system includes a vertically extending conduit having an opening at a lowermost end conduit and two openings through a surface at an opposite end. The surface is disposed at an angle relative to a vertical. The system also has a first horizontally extending conduit communicating with the vertically extending conduit though one of the two openings and a second horizontally extending conduit fluidly communicating with the vertically extending conduit though the other one of the two openings. A manifold defines an inner annular volume and fluidly communicates with the first and second horizontally extending conduits. A spray nozzle insert is in fluid communication with the manifold. The spray nozzle insert has a plurality of blades that radiate inward and connect with a center round well having a sharp end.

An aerosol spray can has a can body, a valve assembly, a dip-tube assembly and a rigid tube. The valve assembly is mounted on the can body. The dip-tube assembly is connected to the valve assembly and has a head end channel-linked to the valve assembly. The dip-tube assembly has a flexible tube and a weight piece. The two ends of the flexible tube are connected to the valve assembly and the weight piece respectively. The rigid tube is sleeved around the flexible tube to constrain excessive bending of the flexible tube. The flexible tube protrudes from the rigid tube. The weight of the weight piece drives the tail end freely toward the ground. Therefore, the tail end stays submerged under a liquid product when less than a half of the liquid product is left inside the can body even when the can body is tilted or horizontal.

An aerosol spray can has a can body, a valve assembly, a dip-tube assembly and a rigid tube. The valve assembly is mounted on the can body. The dip-tube assembly is connected to the valve assembly and has a head end channel-linked to the valve assembly. The dip-tube assembly has a flexible tube and a weight piece. The two ends of the flexible tube are connected to the valve assembly and the weight piece respectively. The rigid tube is sleeved around the flexible tube to constrain excessive bending of the flexible tube. The flexible tube protrudes from the rigid tube. The weight of the weight piece drives the tail end freely toward the ground. Therefore, the tail end stays submerged under a liquid product when less than a half of the liquid product is left inside the can body even when the can body is tilted or horizontal.

A novel foam dispenser is described, which comprises a dispensing container, a valve with a downstream foaming chamber and a pressure control device for maintaining a constant pressure in the container, such that uniform and compact foam will be created.

A novel foam dispenser is described, which comprises a dispensing container, a valve with a downstream foaming chamber and a pressure control device for maintaining a constant pressure in the container, such that uniform and compact foam will be created.