Method for prepressurizing dispensing container and for filling pressurized container with flowable product
First Claim
1. A method for prepressurizing a product dispensing container, comprising the steps of:
- providing a pouch having a first compartment containing a first chemical reactant and a second compartment having a second reactant, said pouch being provided with releasable sealing means for releasably sealing said first compartment and said second compartment and for separating said first compartment and said second compartment from one another to prevent mixing of said first chemical reactant and said second chemical reactant, at least a portion of said pouch containing a predetermined quantity of a first gas;
inserting said pouch into said container;
closing said container; and
generating, before introducing any product into the container, at least a partial vacuum in said container to release said sealing means and expand said pouch under pressure from said gas, thereby enabling mixing of said first chemical reactant and said second chemical reactant to generate a predetermined quantity of a second gas for further expansion of said pouch and pressurization thereof to a predetermined pressure.
2 Assignments
0 Petitions
Accused Products
Abstract
A pressurization pouch having a pressurization system therein activated by the application of a vacuum underpressure to the outside surfaces of the pouch is inserted into a dispensing container through an opening in a lid portion of the container. Upon the sealing of the container by the attachment of a valve member to the container lid at the opening thereof, a vacuum generator is coupled to the valve member to generate negative pressure inside the dispensing container, thereby causing the pouch to expand under the pressure of a predetermined amount of air disposed therein. Upon that initial expansion, the pressurization pouch is further inflated owing to the action of the pressurization system. Upon complete inflation of the pressurization pouch, the pouch forms a liner in the dispensing container. A flowable product is then injected into the dispensing container through the valve member. The pouch comprises a pair of compartments releasably sealed and separated from one another by a seam having a sharp point formed by a pair of straight-line seam segments joining one another at an acute angle.
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Citations
36 Claims
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1. A method for prepressurizing a product dispensing container, comprising the steps of:
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providing a pouch having a first compartment containing a first chemical reactant and a second compartment having a second reactant, said pouch being provided with releasable sealing means for releasably sealing said first compartment and said second compartment and for separating said first compartment and said second compartment from one another to prevent mixing of said first chemical reactant and said second chemical reactant, at least a portion of said pouch containing a predetermined quantity of a first gas; inserting said pouch into said container; closing said container; and generating, before introducing any product into the container, at least a partial vacuum in said container to release said sealing means and expand said pouch under pressure from said gas, thereby enabling mixing of said first chemical reactant and said second chemical reactant to generate a predetermined quantity of a second gas for further expansion of said pouch and pressurization thereof to a predetermined pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for prepressurizing a product dispensing container, comprising the steps of:
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providing a sealed container holding a pouch having a first compartment containing a first chemical reactant and a second compartment having a second chemical reactant, said pouch being provided with releasable sealing means for releasably sealing said first compartment and said second compartment and for separating said first compartment and said second compartment from one another to prevent mixing of said first chemical reactant and said second chemical reactant, at least a portion of said pouch containing a predetermined quantity of a first gas; before introducing any product into the container, generating at least a partial vacuum in said container to release said sealing means and expand said pouch under pressure from said gas, thereby enabling mixing of said first chemical reactant and said second chemical reactant to generate a predetermined quantity of a second gas for further expansion of said pouch and pressurization thereof to a predetermined pressure; and injecting dispensable product into said container upon completion of said step of generating. - View Dependent Claims (20)
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21. A method for prepressurizing a product dispensing container, comprising the steps of:
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providing a pouch having pressurization means for generating a gas to expand said pouch and produce a predetermined pressure therein, said pouch further having activation means for activating said pressurization means, said activation means being itself activated by the application of a partial vacuum to outer surfaces of said pouch; inserting said pouch into said container; closing said container; and generating at least a partial vacuum in said container to activate said activation means and expand said pouch under pressure from said gas before any product is introduced into the dispensing container. - View Dependent Claims (22, 23, 24, 25)
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26. A method for filling a dispensing container with a product, comprising the steps of:
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providing a sealed container having a pressurized pouch therein; injecting a flowable product into said container; and collapsing said pressurized pouch through the introduction of said flowable product into said container, said step of collapsing taking place simultaneously with said step of injecting. - View Dependent Claims (27)
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28. A method for filling a dispensing container with a product, comprising the steps of:
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providing a sealed container holding a pressurized pouch, said container including a cap having an opening, a valve being mounted to said cap in said opening; and injecting a flowable product into said container through said opening and said valve, and simultaneously collapsing said pouch; said product being subsequently ejected by the expansion of said pressurized pouch when said valve is opened to atmosphere. - View Dependent Claims (29)
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30. An inflatable pouch insertable into a dispensing container, said pouch being provided with a pressure generating system for generating a dispensing pressure in said container to force a flowable product through an outlet of said container during a dispensing process, said pouch comprising a pair of walls permanently sealed to one another along edges to form an enclosure, said walls being temporarily sealed directly to one another along a releasable seam to subdivide said enclosure into at least two compartments, said seam being adapted to be released upon the application of a vacuum underpressure of a predetermined magnitude to external surfaces of the pouch, said pressure generating system comprising a first chemical reactant disposed in a first one of said compartments and a second chemical reactant disposed in another of said compartments, said pouch having a predetermined quantity of a gas disposed in said pouch.
- 31. An inflatable pouch insertable into a dispensing container, said pouch being provided with a pressure generating system for generating a dispensing pressure in said container to force a flowable product through an outlet of said container during a dispensing process, said pouch comprising a pair of walls permanently sealed to one another along edges to form an enclosure, said walls being temporarily sealed directly to one another along a releasable seam to subdivide said enclosure into at least two compartments, said seam having a plurality of linear segments, at least two of said segments contiguous with one another extending at an acute angle with respect to one another, said pressure generating system comprising a first chemical reactant disposed in a first one of said compartments and a second chemical reactant disposed in another of said compartments.
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35. An inflatable pouch insertable into a dispensing container, comprising:
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two wall portions permanently sealed to one another to form an enclosure space; a releasable seal directly attaching said two walls and dividing said enclosure space into two regions, said pouch having pressurization means for generating a gas, disposed in said enclosure space, to expand said pouch and produce a predetermined pressure therein and means for releasing said releasable seal by the application of a partial vacuum of a predetermined magnitude to outer surfaces of said pouch, thereby activating said pressurization means in said enclosure space, said releasable seal being capable of withstanding a negative pressure applied to said pouch up to 1/4 bar. - View Dependent Claims (36)
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Specification