摘要:
In order to form an extemporaneous mixture of two components (S, A) isolated from each other, the first component (S) is placed in a can (1) in which a resupply capsule (5) under relatively high pressure is disposed, a valve (12) being provided and controlled depending on the value of the ambient pressure relative to a reference pressure. The second component (A) is introduced into the capsule (5), before installing this capsule in the can; the can (1), is put under a pressure by propellent gas (4) sufficient for the valve (12), during storage, and even though the capsule (5) has been brought into service, to remain in the closed state; in order to form the mixture of the components (S and A), by actuating the dispensing head (1), a reduction is brought about in the pressure in the can (1) placed in a position such that only propellent gas escapes from the dispensing head, which causes the valve (12) to open, the component (A) contained in this capsule to escape and to be mixed with the component (S) from the aerosol can.
摘要:
A fluid dispenser is provided including a reservoir for a fluid material, at least one sealable chamber capable of receiving material from the reservoir, a closure valve device between the chamber and a fluid outlet from the dispenser and a pumping device for pressurizing any fluid material in the chamber, the chamber including at least one resilient wall portion arranged to be deformed by pressurizing of the fluid material.
摘要:
This invention relates to a method of co-dispensing a hair dye composition under pressure wherein there is provided a first container containing a hair dye and propellant material and a second container disposed within the first container containing a hair dye developer material. The second container is provided with a flexible wall against which the propellant acts. A discharge passageway is defined via a nozzle structure and passage of the materials through the nozzle is controlled via a valve structure having first and second valves. The first valve permits control of the flow of material between a first orifice communicating with the first container, a second orifice communicating with the second container and the discharge passageway. The second valve permits control of the flow of material through the second orifice only. The first and second valves are connected for concurrent operation thereof, such that moving the nozzle structure operates the first and second valves to permit simultaneous flow of the materials from the first and second containers through the passageway under the influence of the propellant at an overall flow rate not greater than about 1.8 gm/sec.
摘要:
A pressure capsule for a spray can includes a housing with a chamber disposed therein and a valve mounted within a wall of the housing, the valve is capable of being moved into an open and a closed position such that the valve is moved into the closed position when (1) the pressure capsule is placed in an atmospheric environment and (2) the pressure capsule is placed in a spray can and subjected to a pressure equal to or greater than the operating pressure of the spray can.
摘要:
A bag-type dispenser comprising a casing including a tubular body and a separate body portion, a tubular skirt, a dispensing portion and a one-piece molded annular dome of plastic material including an upper annular portion fixed to the dispensing portion, a lower tubular portion directly and sealingly fixed to the tubular skirt at an upper portion of the skirt over a height of 5 to 20 mm, and a lower annular portion outside the lower tubular portion, directly and sealingly fixed to the tubular body at an upper end. The dispenser can be filled with product by way of a lower end of the tubular skirt which is open, and which can subsequently be closed to form a bag.
摘要:
A novel arthropodicidally-active composition-of-matter is disclosed. Such a composition-of-matter comprises an aqueous lower alkanol solvent, and a toxicant as well as an emulsifier, both contained within the solvent. The amount of emulsifier, relative to the amount of solvent, is effective for forming a foam matrix that is able to collapse after a predetermined period of time thereby to form an arthropodicidally-active film. Also disclosed are methods for producing such an arthropodicidally-active film.
摘要:
A dispenser contains a productivity bag and a system for generating a dispensing pressure in a chamber created by the space between the product bag and the walls of the dispenser. The act of filling the product bag with product establishes an initial dispensing pressure. A pressure regulator in the chamber re-establishes the dispensing pressure after each spray down.
摘要:
A spray dispenser for a liquid to be sprayed has a container provided with an inlet valve adapted for connection to a source of pressurized driving gas for pressurizing a head space above the liquid in the container. A spray head including a spray nozzle is mounted to the container and connects through a dispensing valve to a dip tube extending to the vicinity of the container bottom, such that opening of the dispensing valve causes pressurized discharge of the liquid through the spray nozzle. A mixing chamber is provided between the dip tube and the dispensing valve, which mixing chamber communicates with the head space by means of one or more spring loaded valves which admit propellant gas from the head space into the mixing chamber so long as the head space pressure exceeds a minimum preset level sufficient to ensure adequate dispersion or misting of the spray discharge thereby warning the user of the need to replenish the propellant by a clear transition between a satisfactory discharge spray and an inadequate coalesced liquid discharge.
摘要:
An injection-molded piston for an aerosol container has a face portion for contacting and exerting pressure on material to be dispensed, and a thin, flexible skirt depending axially from and circumscribing the face portion for forming an effective seal against the inside wall of the container. The outer wall of the skirt is continuous, while the circumference of the inner wall has alternating areas of constant thickness along said areas and areas of minimum thickness, the curved portions forming with the outer wall a plurality of sections, the thickness and circumferential extent of each of which decrease axially along the skirt toward its distal end. The piston includes a depending extension on the skirt which aids sealing.
摘要:
An inner container having a dispensing valve is situated within a flexible sack which in turn is situated within an outer container having a cover and a dispensing valve. The sack contains one package component and the inner container contains the other package component and a propellant. A further propellant is situated outside of the sack within the outer container. The inner dispensing valve is constructed as a dosage valve and issues into the interior of the outer dispensing valve. The latter is kinematically coupled with the inner dispensing valve and possesses a blocking system which blocks its interior relative to the interior of the sack when the outer dispensing valve is open. The particular construction and the flow-related coupling of both dispensing valves permits a defined dosed dispensing of both package components with a defined mixture ratio.