초록 ▼

A flexible bag (4) that is filled with a product (5) is accommodated in a rigid container (1). The bag is welded to a valve unit A, which provides an absolute seal for the container (1) by means an annular membrane (17) that is pressed into the neck of the container (19) and a double annular rib (19

A flexible bag (4) that is filled with a product (5) is accommodated in a rigid container (1). The bag is welded to a valve unit A, which provides an absolute seal for the container (1) by means an annular membrane (17) that is pressed into the neck of the container (19) and a double annular rib (19) that is pressed into an annular groove (20) as well as by the welding (23) of a closing sleeve (22) to the container (1). The product (5) is forced into the bag (4) and compressed air is forced through a drilled hole (11) of a valve plate (7) into the container (1) by downward pressure on a valve plunger (8). The valve unit (A) closes the bag (4) a sealing washer (12), working as a non-return valve, seals the container (1) and avoids any loss of pressure, whereafter, when the valve unit is open, the container pressure compresses the bag ( 4) so that the product is dispensed through a spray head (14).

대표청구항 ▼

An apparatus for the storage and controlled issue of products that are under pressure of a propellant, comprising: a rigid outer container having a neck, said neck defining an opening into said outer container; a flexible inner container hermetically secured to a valve unit, said valve unit includin

An apparatus for the storage and controlled issue of products that are under pressure of a propellant, comprising: a rigid outer container having a neck, said neck defining an opening into said outer container; a flexible inner container hermetically secured to a valve unit, said valve unit including a passageway for fluid communication with the interior of said inner container, said passageway having sealing means, disposed therein, for controlling fluid flow therethrough, said sealing means being movable between a first position wherein fluid flow through said passageway is prevented and a second position wherein fluid flow through said passageway is permitted, said sealing means being yieldably urged to said first position; a valve plate, hermetically sealed to said valve unit, for hermetically sealing said neck of said outer container; an aperture formed in said valve plate, said aperture defining a fluid passageway into the interior of said outer container; closure means for hermetically closing said aperture when the interior of said outer container is under pressure; a dispenser head for dispensing said product under propellant pressure; tube means for fluidically connecting said dispenser head and said valve unit, said tube means being slidably received in said passageway of said valve unit, said tube means being movable in response to manual pressure on said dispenser head from a first position wherein said tube means is in contact with said sealing means in said first position to a second position wherein said tube means holds said sealing means in said second position of said sealing means, said tube means returning to its first position upon release of manual pressure on said dispenser head by reason of the return of said sealing means to said first position of said sealing means.