A refillable aerosol cartridge for use with a refill station or the like, that has a unique identifier such as a serial number or the other identification. The refillable aerosol cartridge is equipped with a programmable RFID or other data transferring device that can record, store, and transfer unique information about the refillable aerosol cartridge, including the specific user-selected ingredients, and track the cartridge for the life of the product. The unique serial number or other identifier of the aerosol cartridge can be used to track the cartridge and, in the case of a recall, identify and locate the cartridge for notification.

A new fluid dispenser container is described which comprises a transparent plastic container body (12) with an open end and a separate bottom part (13) joined by laser welding to the open end of the transparent plastic container body. The separate bottom part (13) is made from the same transparent plastic material as the plastic container body (12) and the separate bottom part is laser welded to the plastic container body by melting mating surface lines on the plastic container body (12) and on the separate bottom part (13), whereas the heat to melt is created by a stationary laser means while the plastic container body has been rotated by rotating means at least over a full rotation or by a circularly movable laser means in a full circular motion while the plastic container is stationary.

A new fluid dispenser container is described which comprises a transparent plastic container body (12) with an open end and a separate bottom part (13) joined by laser welding to the open end of the transparent plastic container body. The separate bottom part (13) is made from the same transparent plastic material as the plastic container body (12) and the separate bottom part is laser welded to the plastic container body by melting mating surface lines on the plastic container body (12) and on the separate bottom part (13), whereas the heat to melt is created by a stationary laser means while the plastic container body has been rotated by rotating means at least over a full rotation or by a circularly movable laser means in a full circular motion while the plastic container is stationary.

An outer container for an aerosol dispenser and an aerosol dispenser usable with the outer container. The outer container comprises an upper container portion and lower container portion joined at a seal. A piston slideably disposed in the outer container dispenses product under propellant pressure. The lower container portion has a base and integral sidewall with no bung hole, eliminating leakage paths.

An outer container for an aerosol dispenser and an aerosol dispenser usable with the outer container. The outer container comprises an upper container portion and lower container portion joined at a seal. A piston slideably disposed in the outer container dispenses product under propellant pressure. The lower container portion has a base and integral sidewall with no bung hole, eliminating leakage paths.

The invention relates to a piston for an optionally pressurized container, the piston having a sidewall, an upper side and a bottom side, and at least a first circumferential seal, wherein at least the upper side of the piston is closed by a closure and made of a first elastic material, wherein the upper side is configured to deform upon a pressure change acting on the upper side, wherein the sidewall is made of a second material which is different from the first elastic material, wherein the first circumferential seal is positioned on the sidewall on its outer surface. The invention further relates to an optionally pressurized container comprising a piston as mentioned above, to a process of discharging a product from said container and to a process of manufacturing said container.

The invention relates to a piston for an optionally pressurized container, the piston having a sidewall, an upper side and a bottom side, and at least a first circumferential seal, wherein at least the upper side of the piston is closed by a closure and made of a first elastic material, wherein the upper side is configured to deform upon a pressure change acting on the upper side, wherein the sidewall is made of a second material which is different from the first elastic material, wherein the first circumferential seal is positioned on the sidewall on its outer surface. The invention further relates to an optionally pressurized container comprising a piston as mentioned above, to a process of discharging a product from said container and to a process of manufacturing said container.

A barrier package aerosol container includes a can, valve, and piston disposed in the interior volume of the can. The piston is movable toward a top end of the can to facilitate dispensing of flowable material in the can. Opposing surfaces of the piston and the can and the valve define an interstitial space of the interior volume in which the flowable product is receivable. The piston is contacts at least one of the interior surface of the can at its top end and the valve, to define a piston interface when the piston is at the top end of the can during use. At least one of the piston, the can, and the valve defines one or more flow passages at the piston interface to allow flowable material in the interstitial space to flow through the piston interface toward the valve inlet during use.

A barrier package aerosol container includes a can, valve, and piston disposed in the interior volume of the can. The piston is movable toward a top end of the can to facilitate dispensing of flowable material in the can. Opposing surfaces of the piston and the can and the valve define an interstitial space of the interior volume in which the flowable product is receivable. The piston is contacts at least one of the interior surface of the can at its top end and the valve, to define a piston interface when the piston is at the top end of the can during use. At least one of the piston, the can, and the valve defines one or more flow passages at the piston interface to allow flowable material in the interstitial space to flow through the piston interface toward the valve inlet during use.

The present invention provides a pressure control device for maintaining a constant predetermined pressure in a fluid dispensing container, as well as a pressure control system which includes the device. The present invention further concerns a method for manufacturing the pressure control device and system of the invention. The invention is of particular importance in the technical field of aerosol sprays.