EP0178573B1 - Récipient pour la distribution de fluides par pression et procédé pour sa fabrication - Google Patents

Récipient pour la distribution de fluides par pression et procédé pour sa fabrication Download PDF

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Publication number
EP0178573B1
EP0178573B1 EP19850112729 EP85112729A EP0178573B1 EP 0178573 B1 EP0178573 B1 EP 0178573B1 EP 19850112729 EP19850112729 EP 19850112729 EP 85112729 A EP85112729 A EP 85112729A EP 0178573 B1 EP0178573 B1 EP 0178573B1
Authority
EP
European Patent Office
Prior art keywords
bag
accordance
coating
pleats
valleys
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19850112729
Other languages
German (de)
English (en)
Other versions
EP0178573A3 (en
EP0178573A2 (fr
Inventor
Hyman Katz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Exxel Container Inc
Original Assignee
Exxel Container Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Exxel Container Inc filed Critical Exxel Container Inc
Publication of EP0178573A2 publication Critical patent/EP0178573A2/fr
Publication of EP0178573A3 publication Critical patent/EP0178573A3/en
Application granted granted Critical
Publication of EP0178573B1 publication Critical patent/EP0178573B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
    • B65D83/0061—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents the contents of a flexible bag being expelled by the contracting forces inherent in the bag or a sleeve fitting snugly around the bag

Definitions

  • This invention refers to an apparatus for containing and dispensing a pressurized fluid, comprising an expandable bag having a generally cylindrically shaped outer wall, said bag having a closed end and an open end, said outer wall including a plurality of substantially longitudinal pleats which define a plurality of peaks and valleys, valve means coupled with said open end for selectively releasing the contents of the bag, and an expandable sleeve substantially surrounding said bag for maintaining pressure on the bag and its contents.
  • this object is met by a plurality of expandable longitudinal ribs formed by coating the bag and disposed in the valleys of the pleats and at least partially filling said valleys, said longitudinal ribs controlling refolding of the pleats in the bag as fluid is released from the bag.
  • said ribs are formed by dipping said bag in a coating such that the coating forms longitudinal ribs which fill the bottom of each of the pleat valleys.
  • a dispenser with a pressurized or barrier bag comprises a bag assembly 10 (see Figure 1) which is typically inserted in an enclosure 11.
  • the assembly comprises a tubular bag 12 with a closed bottom end 14 and a mouth 16.
  • a metal cap 18 is fitted over the mouth 16.
  • the cap has a central orifice 20 communicating with the interior of the cap.
  • a valve assembly 22 adapted to release pressurized fluid contained within the bag when activated through orifice 20.
  • an actuator 23 is mounted on top.
  • the actuator has a hollow stem 25 which extends through 20 and releases the fluid when the activator is pressed downward.
  • the bag is surrounded by a relatively thin and resilient coating 24 which conforms to the shape of the bag.
  • the coating is described more fully below.
  • the coated bag is disposed within an elastomeric member 26 which is commonly described as an expandable sleeve.
  • the member 26 is essentially coextensive with bag 12.
  • the bag is first formed into the shape of a bottle as shown in Figure 2.
  • the bag is made of a flexible but substantially nonresilient material which is relatively inert so that it will not impart any taste or smell to its contents.
  • the bag may be made out of a plastic material such as nylon, polypropylene, polyester or SARANEX®. The material may be formed into the shape shown in Figure 2 by blow molding or similar well-known methods in the art.
  • the bottle shaped bag is pleated into the shape shown in Figures 4 and 5.
  • the bag has a plurality of longitudinal or axial pleats defined by crests 28 separated by troughs or valleys 30. Since the bag is flexible it may be compressed radially until the inner walls 32 of each pleat 28 essentially contact or fold over each other. When the bag is compressed or folded in this manner the onlv empty space left in the bag is a relatively narrow tube 34 defined by troughs 30.
  • the pleated bag can be programmed or constrained to re-fold in a very precise and controlled manner after being filled with a product by enveloping it with a coating applied over the pleats.
  • a rubber latex coating is applied to the exterior surface of the bag.
  • the latex is chosen so that when it is applied to the bag, it forms a smooth, even, elastic coating on the bag with a bead or rib being generated to fill the bottom of the pleat valleys 30, as shown at 36 on Figure 6.
  • the size of the bead depends on the density and viscosity of the latex.
  • Latex formulations similar to those used for making different rubber products, such as balloons, surgical gloves, etc. are suitable. Some change in solids content and/or viscosity may be required but these techniques are well known to those in this industry.
  • the latex is a water based emulsion containing the rubber, filler etc. at room temperature.
  • the bag shaped as shown in Figure 4 is dipped into the bath and removed. After the excess latex drains off, the coated bags are dipped into a coagulant, drained, then dipped into water for rinsing and then are heated in an oven, at the maximum temperature which will not affect the container, to drive off the water and to form a solid continuous elastic surface coating on the bag.
  • the coating so formed has sufficient adhesion to the bag to withstand further handling.
  • the bag is now ready for the final assembly.
  • the valve assembly 22 and cap 20 are fitted over mouth 16 of the bag.
  • the elastomeric sleeve 26 is then expanded and pulled over the bag into the position shown in Figure 1.
  • the inner diameter of sleeve 26 is smaller than the outer diameter of the coated bag shown in Figure 4 so that the pleats of the bag are forced close together. During this later operation a vacuum may be applied to the bottle to draw in the pleats thereby making the assembly easier.
  • a fluid is fed under pressure into the bag forcing it to expand substantially into the shape of Figure 2.
  • Sleeve 26 also expands.
  • the elastomeric sleeve 26 applies sufficient force in the bag to keep it pressurized after it (the bag) has been disconnected from the pressurized fluid source.
  • the fluid may be dispensed by activating the valve assembly 22.
  • the ribs or beads of the coating disposed in the pleat valleys force the bag to regain its pleated shape in a smooth, orderly fashion so that extraneous creases are not formed, until the bag is reduced to its minimum or collapsed stage at which point essentially all the fluid contained therein has been removed.
  • Figure 8 shows a cross-sectional view of a bag with a 1.9 gram nominal dry weight latex coating taken along lines 8-8 of Figure 7.
  • Figures 9 and 10 show the same view of a bag with a 5 gram nominal dry weight latex coating and no coating respectively. These nominal weights refer to the dry weight of the latex for a nominal 0.2 l (7 fl. oz.) container. Smaller and larger containers would have corresponding different weights.
  • FIG. 8 A comparison of Figures 8 and 10 shows that the bag without a coating was refolded in a haphazard manner so that in its final stage it still contains many voids and the pleats are not discernible.
  • the bag assembly of Figure 8 has been deformed into an ellipse but there are less voids than in Figure 10 and the pleats are readily identifiable.
  • Figure 9 shows that the bag having a 5 g latex reforms into a configuration with the least number of voids and its pleats are folded evenly.
  • figures 8-10 show the effectiveness of the invention to control the refolding of the bag.
  • the coating has a relatively non-slip surface so that when the coated bag is disposed within the expandable sleeve sufficient frictional forces develop between the bag and the sleeve to prevent the sleeve from slipping axially during its expansion and contraction.
  • slipping was found to be undesirable because if the sleeve slips axially some portions of it become more expanded than other portions and therefore during contractions the bags were subjected to uneven pressure.
  • slippage could also be prevented by roughing the outer surface of the bag, it has been found that such an operation also introduces undue stress in the structure of the bag thereby weakening it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (8)

  1. Récipient pour l'absorption et la distribution de fluides par pression, comprenant un sac extensible (10) avec une paroi extérieure (12) de forme généralement cylindrique et un bout fermé (14) et un bout ouvert (16), cette paroi extérieure comportant une pluralité de plis substantiellement longitudinaux, qui définient une quantité de collines (28) et de vallées (30) et le bout ouvert (16) étant raccordé à une valve (22) pour la distribution du contenu du sac, un manchon extensible (26) entourant substantiellement ledit sac, étant prévu pour maintenir le sac et son contenu sous pression, charactérisé par une pluralité de nervures longitudinales extensibles (36) formées en appliquant une couche sur ledit sac (10) et placées dans lesdites vallées (30) des plis en remplissant au moins partiellement ces vallées, ces nervures longitudinales (36) contrôlant la facon comme les plis se replient dans le sac, quand du fluid est distribué du sac.
  2. Récipient selon revendication 1, charactérisé en ce que les nervures longitudinales s'étendent à partir d'un endroit près du bout ouvert (16) jusqu'à un endroit près du bout fermé (14).
  3. Récipient selon revendication 1, charactérisé en ce qu'il comporte une enveloppe additionnelle (11).
  4. Récipient selon revendication 1, charactérisé en ce que la pluralité des nervures longitudinales (36) consiste en latex, en caoutchouc prévulcanisé ou en isoprène synthétique.
  5. Récipient selon revendication 1, charactérisé en ce qu'un diamètre intérieur d'un manchon etensible (26) est plus réduit qu'un diamètre défini par des collines (28) dans le sac.
  6. Récipient selon revendication 1, charactérisé en ce que la pluralité des nervures longitudinales (36) se produit par l'immersion du sac dans un matériel de couche (24) de sorte que la couche forme des nervures longitudinales (36) qui remplissent le fond de chaque vallée (30).
  7. Récipient selon revendication 1, charactérisé en ce que le matériel de couche (24) est en matériel latex.
  8. Récipient selon revendication 1, charactérisé en ce que le matériel latex consiste en latex d'un poids à l'état sec de 5 grammes.
EP19850112729 1984-10-17 1985-10-08 Récipient pour la distribution de fluides par pression et procédé pour sa fabrication Expired EP0178573B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66158384A 1984-10-17 1984-10-17
US661583 1984-10-17

Publications (3)

Publication Number Publication Date
EP0178573A2 EP0178573A2 (fr) 1986-04-23
EP0178573A3 EP0178573A3 (en) 1988-05-11
EP0178573B1 true EP0178573B1 (fr) 1992-03-18

Family

ID=24654213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850112729 Expired EP0178573B1 (fr) 1984-10-17 1985-10-08 Récipient pour la distribution de fluides par pression et procédé pour sa fabrication

Country Status (6)

Country Link
EP (1) EP0178573B1 (fr)
JP (1) JPS61118163A (fr)
AU (1) AU586646B2 (fr)
BR (1) BR8505152A (fr)
CA (1) CA1304726C (fr)
DE (1) DE3585658D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10239682B2 (en) 2013-01-16 2019-03-26 Greenspense Ltd. Propellant-free pressurized material dispenser

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673994A5 (fr) * 1987-02-25 1990-04-30 Hafesto Ag
JPS6450814A (en) * 1987-08-19 1989-02-27 Tadao Shiraishi Spray-type bathing agent
US4949871A (en) * 1989-02-09 1990-08-21 Aerosol Systems, Inc. Barrier pack product dispensing cans
US5111971A (en) * 1989-05-26 1992-05-12 Robert Winer Self-pressurized container having a convoluted liner and an elastomeric sleeve
US5232126A (en) * 1989-05-26 1993-08-03 Robert Winer Liner for dispensing container
US5143260A (en) * 1990-06-05 1992-09-01 Nozone Dispenser Systems, Inc. Aerosol adapter clamp and power system
JPH05904A (ja) * 1990-11-28 1993-01-08 Fumakilla Ltd フオーム状除草製剤及びその施用方法
EP1984279B1 (fr) * 2006-02-14 2009-11-11 Power Container Corp. Dispositif de distribution de fluide
CN102196972B (zh) * 2008-10-23 2013-05-29 宝洁公司 个人护理产品、多室材料分配系统及其制造方法
US9409698B2 (en) 2011-03-02 2016-08-09 Greenspense Ltd. Propellant-free pressurized material dispenser
US9758641B2 (en) 2011-07-11 2017-09-12 T.G.L. S.P. Industries Ltd. Nanoclay hybrids and elastomeric composites containing same
US10913836B2 (en) 2013-01-16 2021-02-09 Greenspense Ltd. Elastomeric composites exhibiting high and long-lasting mechanical strength and elasticity and devices containing same
CN110871959A (zh) * 2018-08-29 2020-03-10 黄伟伦 采用真空原理的环保汲取装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767078A (en) * 1970-11-03 1973-10-23 N Gortz Bladder type dispenser
US4423829A (en) * 1980-08-28 1984-01-03 Container Industries Inc. Apparatus for containing and dispensing fluids under pressure and method of manufacturing same
US4387833A (en) * 1980-12-16 1983-06-14 Container Industries, Inc. Apparatus for containing and dispensing fluids under pressure and method of producing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10239682B2 (en) 2013-01-16 2019-03-26 Greenspense Ltd. Propellant-free pressurized material dispenser

Also Published As

Publication number Publication date
AU586646B2 (en) 1989-07-20
BR8505152A (pt) 1986-09-09
EP0178573A3 (en) 1988-05-11
DE3585658D1 (de) 1992-04-23
EP0178573A2 (fr) 1986-04-23
AU4874285A (en) 1986-05-01
CA1304726C (fr) 1992-07-07
JPH047264B2 (fr) 1992-02-10
JPS61118163A (ja) 1986-06-05

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