Cartridge delivery system utilizing film bags
First Claim
1. A film pack cartridge comprising:
- (a) an integrally molded synthetic resin face plate having a discharge opening therein and a nosepiece on one face extending about said opening; and
(b) a pair of flexible synthetic resin bags each having one end sealingly adhered to the other face of said face plate about said discharge opening, the other ends of said bags being sealed.
2 Assignments
0 Petitions
Accused Products
Abstract
A film pack cartridge includes an integrally molded synthetic resin face plate having a discharge opening therein and a nosepiece on one face extending about the opening, and a pair of flexible synthetic resin bags each having one end sealingly adhered to the other face of the face plate and about the discharge opening and with the other ends of the bags being sealed. The bags may be disposed side-by-side or one bag may be of annular configuration with a bag of circular configuration disposed therewithin. The cartridges are produced by mounting generally tubular synthetic resin bags on mandrels which are inserted into a mold providing a cavity about an end of said mandrels and bags configured to provide a face plate and nosepiece. Molten synthetic resin is injected into the cavity to form a face plate with the ends of the bags sealingly adhered thereto, said face plate having a discharge opening therein and a nosepiece about said opening aligned with the end of said bag. The pack and mandrels are removed from the cavity, the bags removed from the mandrels, and other ends of the bags are sealed. Flowable compositions are injected through the nosepiece and into the bags.
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Citations
24 Claims
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1. A film pack cartridge comprising:
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(a) an integrally molded synthetic resin face plate having a discharge opening therein and a nosepiece on one face extending about said opening; and
(b) a pair of flexible synthetic resin bags each having one end sealingly adhered to the other face of said face plate about said discharge opening, the other ends of said bags being sealed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cartridge dispenser assembly including:
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(a) a dispenser including a housing with a dispensing end, a tubular sleeve, and a piston movable in said sleeve towards said dispenser end;
(b) a film pack disposed in said tubular sleeve and including (i) an integrally molded synthetic resin face plate having a discharge opening therein and a nosepiece on one face extending about said opening, and (ii) a pair of flexible synthetic resin bags each having one end sealingly adhered to the other face of said face plate about said discharge opening, the other ends of said bag being sealed, said nosepiece extending outwardly of said dispensing end of said dispenser. - View Dependent Claims (12, 13, 14, 15, 16)
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17. In a method for producing dispenser packs of flowable compositions, the steps comprising:
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(a) mounting a generally tubular flexible synthetic resin bag on a mandrel;
(b) inserting said mandrel and bag into a mold providing a cavity about an end of said mandrel and bag configured to provide a face plate and nosepiece;
(c) injecting into said cavity molten synthetic resin of substantially the same composition as that of said bag to form a face plate with the end of the bag sealingly adhered thereto, said face plate having a discharge opening therein and a nosepiece about said opening aligned with the end of said bag;
(d) removing said face plate, bag and mandrel from said cavity;
(e) removing said bag and face plate from said mandrel; and
(f) sealing the end of said bag spaced from said face plate. - View Dependent Claims (18, 19, 20)
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21. In a method for dispensing flowable compositions, the steps comprising:
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(a) forming a film pack cartridge comprising an integrally molded synthetic resin face plate having a discharge opening therein and a nosepiece on one face extending about said opening; and
a pair of flexible synthetic resin bags each having one end sealingly adhered to the other face of said face plate about said discharge opening, the other end of said bag being sealed;
(b) filling said bag by injecting flowable compositions through said nosepiece;
(c) placing a sealing cap on said nosepiece;
(d) placing said cartridge in a tubular sleeve;
(e) removing said cap and coupling a dispensing nozzle to said nosepiece;
(f) moving a piston in said sleeve against said other end of said bag to discharge the contents of said bag through said discharge opening and mixer. - View Dependent Claims (22, 23, 24)
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Specification