EP0044887A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Expandable bag and method of manufacture
Assignee: Cessione ccl Technologies Inc
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Filing: 1980-12-24
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Granted: —
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Expires: 2000-12-24
Abstract
Abstract A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing the bag to expand gradually from a collapsed condition to an ultimately fully expanded condition. The internal compartmentation in the bag also contains a solvent medium and a time release capsule of one of said components, thereby providing apparatus that can be mass produced and used for insertion into aerosol-type liquid product dispensing containers to provide relatively constant expulsion pressure during use.
Inventors
- 👤 Russell Banks
- 👤 David J. Magid
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 13:26
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/60; B65D83/62; B65D83/625; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B65D81/00; B65D81/32; B65D81/3233
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
227 words
A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a plurality of recesses disposed in the sidewall of said bag in serial alignment, said first component disposed in said recesses, a cover sheet enclosing said recesses, said cover sheet releasably adhered to the internal sidewall of said bag adjacent said recesses and permanently adhered to said internal sidewall opposite said recesses, said second component disposed within said bag separate from said recesses, separate container means disposed in said bag and a solvent medium disposed therein, an additional quantity of said first component disposed within said bag separate from said recesses in time release condition, said separate container means rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component and said second component to initiate generation of said gas after a predetermined time interval, said cover sheet being successively releasable from said recesses upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure therof until said bag reaches its fully expanded condition.
Claim 2
Dependent Claim
227 words
A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a plurality of recesses disposed in the sidewall of said bag in serial alignment, said first component disposed in said recesses, a cover sheet enclosing said recesses, said cover sheet releasably adhered to the internal sidewall of said bag adjacent said recesses and permanently adhered to said internal sidewall opposite said recesses, said second component disposed within said bag separate from said recesses, separate container means disposed in said bag and a solvent medium disposed therein, an additional quantity of said first component disposed within said bag separate from said recesses in time release condition, said separate container means rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component and said second component to initiate generation of said gas after a predetermined time interval, said cover sheet being successively releasable from said recesses upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure therof until said bag reaches its fully expanded condition.
Claim 3
Dependent Claim
221 words
A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a plurality of recesses disposed in the sidewall of said bag in serial alignment, said first component disposed in said recesses, a cover sheet enclosing said recesses, said cover sheet releasably adhered to the internal sidewall of said bag adjacent said recesses, and permanently adhered to said internal sidewall opposite said recesses, a separate container means disposed in said bag and a solvent medium and said second component disposed therein, an additional quantity of said first component disposed within said bag separate from said recesses and said container means in time release condition, said separate container means rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component to initiate generation of said gas after a predetermined time interval, said cover sheet being successively releasable from said recesses upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure thereof until said bag reaches its fully expanded condition.
Claim 4
Dependent Claim
221 words
A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a plurality of recesses disposed in the sidewall of said bag in serial alignment, said first component disposed in said recesses, a cover sheet enclosing said recesses, said cover sheet releasably adhered to the internal sidewall of said bag adjacent said recesses, and permanently adhered to said internal sidewall opposite said recesses, a separate container means disposed in said bag and a solvent medium and said second component disposed therein, an additional quantity of said first component disposed within said bag separate from said recesses and said container means in time release condition, said separate container means rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component to initiate generation of said gas after a predetermined time interval, said cover sheet being successively releasable from said recesses upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure thereof until said bag reaches its fully expanded condition.
Claim 5
Dependent Claim
215 words
A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a first group of compartments disposed in said bag in serial alignment containing said first component and releasably sealed to the internal sidewall of said bag in said collapsed condition, said second component disposed within said bag external of said first group of compartments, a separate compartment disposed within said bag and a solvent medium disposed therein, an additional quantity of said first component disposed within said bag external of said first group of compartments in time release condition, a portion of said separate compartment rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component and said second component to initiate generation of said gas after a predetermined time interval, said first group of compartments being successively unsealable from said sidewall upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure thereof until said bag reaches its fully expanded condition.
Claim 6
Dependent Claim
215 words
A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a first group of compartments disposed in said bag in serial alignment containing said first component and releasably sealed to the internal sidewall of said bag in said collapsed condition, said second component disposed within said bag external of said first group of compartments, a separate compartment disposed within said bag and a solvent medium disposed therein, an additional quantity of said first component disposed within said bag external of said first group of compartments in time release condition, a portion of said separate compartment rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component and said second component to initiate generation of said gas after a predetermined time interval, said first group of compartments being successively unsealable from said sidewall upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure thereof until said bag reaches its fully expanded condition.
Claim 7
Dependent Claim
208 words
A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a first group of compartments disposed in said bag in serial alignment containing said first component and releasably sealed to the internal sidewall of said bag in said collapsed condition, said second component disposed within said bag external of said first group of compartments, a separate compartment disposed within said bag and a solvent medium disposed therein, an additional open compartment disposed within said bag and said first component disposed therein in time release condition, said separate compartment rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component and said second component to initiate generation of said gas after a predetermined time interval, said first group of compartments being successively unsealable from said sidewall upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure thereof until said bag reaches its fully expanded condition.
Claim 8
Dependent Claim
208 words
A fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a first group of compartments disposed in said bag in serial alignment containing said first component and releasably sealed to the internal sidewall of said bag in said collapsed condition, said second component disposed within said bag external of said first group of compartments, a separate compartment disposed within said bag and a solvent medium disposed therein, an additional open compartment disposed within said bag and said first component disposed therein in time release condition, said separate compartment rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component and said second component to initiate generation of said gas after a predetermined time interval, said first group of compartments being successively unsealable from said sidewall upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure thereof until said bag reaches its fully expanded condition.
Claim 9
Dependent Claim
76 words
In the bag according to claim 4, said bag being plastic and said first group of compartments comprised of pockets formed in the interior wall of said bag and having openings facing the interior of said bag, said pockets each containing said first component, a plastic sheet releasably enclosing said pockets on one side of said sheet and permanently adhered to the opposed inner wall portion of said bag on the other side of said sheet.
Claim 10
Dependent Claim
33 words
In the bag according to claim 5, said separate compartment comprised of a pocket formed in the wall of said bag, water disposed in said pocket, and a rupturable sheet enclosing said pocket.
Claim 11
Dependent Claim
49 words
In the bag according to claim 6, said additional compartment comprised of a pocket formed in the wall of said bag, and at least one time release capsule containing said first component disposed in said pocket, said capsule adapted to contact said water when said rupturable sheet is broken.
Claim 12
Dependent Claim
20 words
In the bag according to claim 7, said first component being citric acid and said second component being sodium bicarbonate.
Claim 13
Dependent Claim
50 words
In the bag according to claim 8, said plastic bag being laminated with polyethylene on the exterior wall and polypropylene in the interior wall, and said plastic sheet enclosing said first group of pockets being laminated and having polyethylene on its said one side andpolypropylene on its said other side.
Claim 14
Independent Claim
190 words
The method of fabricating a fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimate fully expanded condition comprising the steps of: a. forming a group of pockets in a first plastic sheet, said pockets being aligned in a staggered series; b. fabricating a rupturable solvent containing means associated with said first sheet; c. introducting measured amounts of said first component into each pocket of said group; d. placing a second plastic sheet over said first group of pockets and releasably sealing it at least at its marginal areas to said first sheet; e. placing time release capsule containing said first component, and a measured amount of said second component on a portion of said first sheet spaced from all of said pockets; and f. permanently sealing a third plastic sheet to said first sheet at the marginal areas of both and to said second sheet to provide a bag-like enclosure containing within its interior all of said compartments, said second and said second compartment.
Claim 15
Independent Claim
190 words
The method of fabricating a fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimate fully expanded condition comprising the steps of: a. forming a group of pockets in a first plastic sheet, said pockets being aligned in a staggered series; b. fabricating a rupturable solvent containing means associated with said first sheet; c. introducting measured amounts of said first component into each pocket of said group; d. placing a second plastic sheet over said first group of pockets and releasably sealing it at least at its marginal areas to said first sheet; e. placing time release capsule containing said first component, and a measured amount of said second component on a portion of said first sheet spaced from all of said pockets; and f. permanently sealing a third plastic sheet to said first sheet at the marginal areas of both and to said second sheet to provide a bag-like enclosure containing within its interior all of said compartments, said second and said second compartment.
Claim 16
Dependent Claim
37 words
In the method of claim 10, each said sheet being laminated polyethylene/polypropylene, and having the releasably sealed surfaces being a polyethylene to polypropylene bond and the permanently sealed surfaces being a homogenous bond of the same plastic.
Claim 17
Dependent Claim
19 words
In the method of claim 11, step (a) using vacuum forming and steps (d) and (f) employing heat sealing.
Claim 18
Dependent Claim
52 words
In the method of claim 12, the measured amounts of said first component totalling the stoichiometric amount required to completely react with the measured amount of said second component in step (e), and the amount of solvent medium in step (b) being sufficient to dissolve all of said first and second components.
Claim 19
Dependent Claim
33 words
The method according to claim 13 including forming successive interconnected bags in a continuous plastic sheet, winding said continuous sheet containing the formed bags into a supply roll for transport and subsequent use.
Claim 20
Dependent Claim
23 words
In the method of claim 13, said first component is citric acid, said second component sodium bicarbonate, and said solvent medium is water.
Claim 21
Dependent Claim
23 words
In the bag according to claim 4, said separate compartment comprising an independent rupturable enclosure containing said solvent medium and said second component.
Claim 22
Dependent Claim
25 words
In the bag according to claim 16, said solvent medium comprised of water, said first and second components being citric acid and sodium bicarbonate, respectively.
Claim 23
Dependent Claim
14 words
In the bag according to claim 17, said enclosure being comprised of plastic film.
Claim 24
Independent Claim
163 words
The method of fabricating a fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimate fully expanded condition comprising the steps of: a. forming a plurality of pockets in a first plastic sheet, said pockets being aligned in a staggered series; -b. introducing measured amounts of said first component into each pocket of said group; c. placing a rupturable plastic enclosure on said first sheet containing a solvent medium and said second component; d. placing a second plastic sheet over said pockets and releasably sealing it at least at its marginal areas to said first sheet; and e. permanently sealing a third plastic sheet to said first sheet at the marginal areas of both and to said second sheet to provide a bag-like enclosure containing within its interior all of said compartments, said second sheet and said enclosure.
Claim 25
Independent Claim
163 words
The method of fabricating a fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimate fully expanded condition comprising the steps of: a. forming a plurality of pockets in a first plastic sheet, said pockets being aligned in a staggered series; -b. introducing measured amounts of said first component into each pocket of said group; c. placing a rupturable plastic enclosure on said first sheet containing a solvent medium and said second component; d. placing a second plastic sheet over said pockets and releasably sealing it at least at its marginal areas to said first sheet; and e. permanently sealing a third plastic sheet to said first sheet at the marginal areas of both and to said second sheet to provide a bag-like enclosure containing within its interior all of said compartments, said second sheet and said enclosure.
Claim 26
Independent Claim
298 words
The method of fabricating an aerosol-type containiner for dispensing a liquid product on demand in which the internal pressurizing means in said container is a fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimate fully expanded condition comprising the steps of: a. forming a plurality of pockets in a first continuous plastic sheet, said pockets being aligned in a staggered series; b. introducing measured amounts of said first component into each pocket; c. placing a time release capsule containing said first component, and a rupturable plastic enclosure on said first continuous sheet containing a solvent medium and said second component; d. placing a plastic sheet over said first continuous group of pockets and releasably sealing it at least at its marginal areas to said first sheet; e. permanently sealing a third plastic sheet to said first continuous sheet at the marginal areas of both and to said second sheet to provide a bag-like enclosure containing within its interior all of said compartments, said second sheet and said enclosure; f. forming successive bags in said first continuous sheet; g. winding said continuous sheet containing the formed bags into a supply roll having a delivery end presenting a first bag; h. positioning the body of said continer adjacent said supply roll; i. breaking said rupturable enclosure in the bag at said delivery end to bring its contents into contact with said time release capsule; j. severing the bag in step i. from said roll and inserting said bag into said container; k. introducing said liquid product into said container; 1. affixing a top with associated dispensing means on said container to enclose the same.
Claim 27
Independent Claim
298 words
The method of fabricating an aerosol-type containiner for dispensing a liquid product on demand in which the internal pressurizing means in said container is a fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimate fully expanded condition comprising the steps of: a. forming a plurality of pockets in a first continuous plastic sheet, said pockets being aligned in a staggered series; b. introducing measured amounts of said first component into each pocket; c. placing a time release capsule containing said first component, and a rupturable plastic enclosure on said first continuous sheet containing a solvent medium and said second component; d. placing a plastic sheet over said first continuous group of pockets and releasably sealing it at least at its marginal areas to said first sheet; e. permanently sealing a third plastic sheet to said first continuous sheet at the marginal areas of both and to said second sheet to provide a bag-like enclosure containing within its interior all of said compartments, said second sheet and said enclosure; f. forming successive bags in said first continuous sheet; g. winding said continuous sheet containing the formed bags into a supply roll having a delivery end presenting a first bag; h. positioning the body of said continer adjacent said supply roll; i. breaking said rupturable enclosure in the bag at said delivery end to bring its contents into contact with said time release capsule; j. severing the bag in step i. from said roll and inserting said bag into said container; k. introducing said liquid product into said container; 1. affixing a top with associated dispensing means on said container to enclose the same.
Claim 28
Dependent Claim
29 words
In the method of claim 20, heating said container sufficiently to enhance activation of the admixture of said time release capsule and said second component in said solvent medium.
Claim 29
Dependent Claim
258 words
In a dispensing container of the type having internal pressure generating means for dispensing a material thereform upon operation of a dispensing valve means, the improvement comprising a pressure generating means including a fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a plurality of recesses disposed in the sidewall of said bag in serial alignment, said first component disposed in said recesses, a cover sheet enclonsing said recesses, said cover sheet releasably adhered to the internal sidewall of said bag adjacent said recesses and permanently adhered to said internal sidewall opposite recesses, said second component disposed within said bag separate from said recesses, separate container means disposed in said bag and a solvent medium disposed therein, an additional quantity of said first component disposed within said bag separate from said recesses in time release condition, said separate container means rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component and said second component to initiate generation of said gas after a predetermined time interval, said cover sheet being successively releasable from said recesses upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure thereof until said bag reaches its fully expanded condition.
Claim 30
Dependent Claim
258 words
In a dispensing container of the type having internal pressure generating means for dispensing a material thereform upon operation of a dispensing valve means, the improvement comprising a pressure generating means including a fluid impervious expandable enclosed bag containing separately compartmented first and second gas generating components which, upon admixture in successive amounts, generate gas causing said bag to expand gradually from a collapsed condition to an ultimately fully expanded condition, said bag comprising a plurality of recesses disposed in the sidewall of said bag in serial alignment, said first component disposed in said recesses, a cover sheet enclonsing said recesses, said cover sheet releasably adhered to the internal sidewall of said bag adjacent said recesses and permanently adhered to said internal sidewall opposite recesses, said second component disposed within said bag separate from said recesses, separate container means disposed in said bag and a solvent medium disposed therein, an additional quantity of said first component disposed within said bag separate from said recesses in time release condition, said separate container means rupturable to cause its contents to be discharged into the interior of said bag into admixture with said time release first component and said second component to initiate generation of said gas after a predetermined time interval, said cover sheet being successively releasable from said recesses upon expansion of said bag to discharge the first component therein into admixture with said solvent containing said second component to maintain generation of said gas and a relative constant pressure thereof until said bag reaches its fully expanded condition.
References Cited (Backward Citations)
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