EP1400464A1 - Dispositif de distribution pour compositions à durcissement anaérobie - Google Patents

Dispositif de distribution pour compositions à durcissement anaérobie Download PDF

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Publication number
EP1400464A1
EP1400464A1 EP03255760A EP03255760A EP1400464A1 EP 1400464 A1 EP1400464 A1 EP 1400464A1 EP 03255760 A EP03255760 A EP 03255760A EP 03255760 A EP03255760 A EP 03255760A EP 1400464 A1 EP1400464 A1 EP 1400464A1
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EP
European Patent Office
Prior art keywords
channel
section
dispenser
defining
helical
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.)
Withdrawn
Application number
EP03255760A
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German (de)
English (en)
Inventor
Grant Anthony Thomas Huck
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from GB0221499A external-priority patent/GB0221499D0/en
Application filed by Individual filed Critical Individual
Publication of EP1400464A1 publication Critical patent/EP1400464A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/60—Contents and propellant separated
    • B65D83/62—Contents and propellant separated by membrane, bag, or the like
    • 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
    • B65D2231/00—Means for facilitating the complete expelling of the contents
    • B65D2231/001—Means for facilitating the complete expelling of the contents the container being a bag
    • B65D2231/004—Means for facilitating the complete expelling of the contents the container being a bag comprising rods or tubes provided with radial openings, ribs or the like, e.g. dip-tubes, spiral rods
    • 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
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/46—Tilt valves

Definitions

  • the present invention relates to a container for the storage and dispensing of curable compositions that cure in the absence of oxygen. More particularly but not exclusively, it relates to a dispenser for such compositions from which an improved proportion of its contents may be dispensed.
  • Anaerobic curing compositions are those which remain as liquids in the presence of oxygen, but which polymerise to solids or gels in the absence of oxygen. Such compositions also polymerise in the presence of metal, even a solid metal surface. They are therefore widely used in engineering instead of expensive or elaborate mechanical fixings or components, especially where metal components are to be fixed and/or sealed together. Common applications include threadlocking nuts, retaining, sealing and gasketing.
  • anaerobic adhesives and sealants are generally stored in plastics containers with a substantial free air volume above the liquid composition.
  • these products are generally highly viscous liquids or even pastes.
  • a conventional manually-squeezable plastics bottle or the like having a restricted nozzle for accurate application, is not particularly convenient as a dispenser for such compositions. It is also very difficult to squeeze out as high a proportion of the contents of such containers as one might wish, and the anaerobic compositions are generally far too viscous to flow out unaided.
  • compositions are highly effective when used correctly, they are also expensive to produce, compared to most other forms of adhesive or sealant. It is hence a disincentive to using such products, if there is a significant wastage that cannot be dispensed from the container. The recovery or disposal of undispensed product may also constitute an environmental, health and/or safety problem.
  • container/dispenser which are adapted to deliver a high proportion of a liquid contained therein, driven by pressurised gas (frequently, but strictly incorrectly, known as aerosols).
  • pressurised gas frequently, but strictly incorrectly, known as aerosols.
  • a conventional pressurised dispenser of this type has metal walls and would lead to polymerisation of its contents.
  • a plastics equivalent would not be able to retain a gas pressure sufficient to deliver viscous anaerobic compositions.
  • the composition should be delivered as a liquid not as a spray or a foam, so direct composition/gas contact is undesirable.
  • aerosol container comprising a flexible, collapsible bag disposed within a conventional pressurisable metal outer casing (widely referred to as a "barrier pack system").
  • the flexible bag holds the liquid and is connected to the dispensing valve of the container, while a gas under pressure is held within the outer casing and outside the bag, which is substantially impermeable.
  • the pressurised gas compresses the flexible bag, expelling the liquid therein through the valve. Since the valve can be made entirely of plastics materials, the liquid is never in contact with metal.
  • the tubular body has relatively thick walls and hence a relatively narrow bore. This is especially true when the tubular body is of plastics material, as needs to be the case for most anaerobic compositions.
  • a narrow bore does not allow free passage for liquids or pastes as viscous as the majority of anaerobic compositions.
  • the narrow openings at each end of the tubular body are prone to blockage.
  • the interior of the tubular body is relatively inaccessible to oxygen permeating through the bulk of the composition, and so any of the composition retained therein for any length of time will begin to polymerise and can easily block the bore. This is found to be the case even with versions of the tubular body having perforated walls, also shown in US 4148416.
  • US4148416 also discloses, as an alternative, an elongate solid body provided with longitudinal surface ribs, but the passages defined between the ribs, the body and a constricted bag can often become too narrow to allow sufficiently free passage of a viscous liquid or paste. Nevertheless, the concept of maintaining a passage from end to end of a compressed bag appears sound.
  • a dispenser for anaerobic compositions comprising casing means adapted to withstand internal pressure, flexible container means disposed within the casing means and having walls permeable to oxygen and dispensing valve means connected to the flexible container means and selectively operable to release material held therewithin, wherein the dispenser is provided with elongate channel-defining means extending across an interior of the flexible container means from adjacent the valve means to a remote end, the channel-defining means comprising solid wall elements extending generally radially outwardly from its longitudinal axis and twisting to define at least one helical channel means extending generally longitudinally of the channel-defining means and connected along substantially its entire extent directly to an interior of the flexible container means.
  • the channel-defining element may comprise a plastics material.
  • said channel means comprises at least half of the area of a transverse cross-section of the channel-defining means at any point thereof.
  • the channel-defining means comprises a plurality of substantially identical first sections arranged substantially along its longitudinal axis.
  • the channel-defining means also comprises a plurality of second sections, each substantially identical one to the others, and also arranged substantially along the longitudinal axis of the channel-defining means.
  • Said first and second sections may be arranged alternately along said longitudinal axis.
  • each said first or second section defines at least one generally helical channel means extending generally longitudinally of the channel-defining means, optionally two generally helical channel means.
  • each said first section defines at least one channel means extending helically in an opposite sense to the at least one channel means defined by each said second section.
  • Each said first section may thus define a clockwise helical path while each said second section defines an anticlockwise helical path, or vice versa.
  • said wall of each section is discontinuous with the corresponding wall of each adjoining section.
  • Each of the two helical channel means defined by each section will then be connected to each of the two helical channel means defined by each said adjoining section.
  • adjoining sections may be so disposed, one relative to the other, that their respective walls extend substantially at right angles one to the other where they meet.
  • each said first or second section defines helical channel means having a pitch of between one quarter and four times a diameter of the section.
  • each said first or second section defines helical channel means having a pitch of between one half and two times said diameter, optionally having a pitch substantially equal to said diameter.
  • the flexible container means preferably contains an anaerobic composition, such as an anaerobic curing adhesive or sealant material.
  • the dispenser advantageously contains a pressurised gas, held between the casing means and the flexible container means.
  • Said pressurised gas may comprise oxygen, and optionally may comprise compressed air.
  • a dispensing container 1 for anaerobic curing compositions comprises an elongate cylindrical outer casing 2, within which is disposed an elongate flexible bag 3.
  • the outer casing 2 may be of metal such as tinplate or aluminium.
  • the flexible bag 3 comprises a plastics material, such as low density polyethylene, which is permeable to gases, and in particular oxygen containing gases.
  • An elongate channelling element 4 of plastics material is disposed generally longitudinally within the flexible bag 3, and is shown in more detail in Figures, 2, 3 and 4.
  • the container 1 is provided at a first end with a dispensing valve 5 of generally conventional form, shown in more detail in Figures 5A and 5B.
  • the valve 5 is connected to an interior of the flexible bag 3.
  • the valve 5 has a nozzle 6 extending outwardly therefrom, coaxially of the container 1, which is provided with a thread 7.
  • a tapering extension nozzle 8, provided with a corresponding thread on an interior surface, may thus be screwed on to the nozzle 6.
  • the flexible bag 3 containing the element 4 is filled with an anaerobic curing composition 9 to be dispensed from the container 1, in the form of a viscous liquid or a flowable paste.
  • a propellant gas 10 is held under pressure within the outer casing 2 and outside the flexible bag 3. (Arrangements for injecting this gas 10 into the container 1 are shown in Figures 6A and 6B).
  • the propellant gas 10 has a significant oxygen content - compressed air is a convenient example. Because the flexible bag 3 is significantly permeable to oxygen, some oxygen from the propellant gas 10 will pass through the flexible bag 3 to contact the anaerobic composition 9. An oxygen concentration within the anaerobic composition 9 is thus established and maintained, which is sufficient to prevent or at least significantly retard premature curing within the container 1.
  • the channelling element 4 comprises a plurality of helical sections 11, 12, each formed of a wall extending radially on both sides of the longitudal axis of the element 4.
  • Helical sections 11 having a twist in one sense, say clockwise, alternate along the element 4 with helical sections 12 having a twist in the opposite sense, say anti-clockwise.
  • Each of the helical sections 11, 12 twists in a respective sense through half a revolution about the longitudinal axis of the elongate element 4.
  • the wall at a first end 13 of each section 11, 12 extends at right angles to the wall at an adjoining second end 14 of a neighbouring section 12, 11.
  • a further benefit of the shape of element 4 shown is that (as Figure 3 makes particularly clear), the volume of the solid structure of each section 11, 12 is only a small proportion of the volume defined by the element 4 (here, about a quarter thereof).
  • the longitudinal channels have a relatively high transport capacity for material flowing therealong. The manner in which the channels meet and split again at the ends 13, 14 of each section 11, 12 ensures that any blockage that may still form can easily be by-passed.
  • the net surface area of the element 4 shown is also minimised. This is important for viscous liquids and pastes, as surface drag can significantly hamper their flow. If flow were restricted unduly, higher compressed air pressures would be required within the outer casing 2 to drive the composition 9 out of the container 1, and there are limits to the pressures that commercially viable outer casings 2 can withstand.
  • element 4 Although the shape of element 4 shown might appear complex, it has no awkward undercuts, and is therefore relatively easy to injection-mould from a polymer of choice.
  • the shape of the element 4 is also particularly conductive to good flow of the composition.
  • the dispensing valve 5 of the container 1 is relatively conventional, as Figure 5A and 5B show.
  • the flexible bag 3 is mounted to the outer casing 2 and the valve 5 by means of a peened annular seam 15, such that the valve 5 is connected only to an interior of the bag 3 containing the composition 9, and not to the compressed gas 10 between the casing 2 and the bag 3.
  • the nozzle 6 is provided with a bore 16, which is open at an end distal to the container 1, but is closed by a plate 17 at a proximal end, disposed within the bag 3.
  • a plurality of ports 18 extend through the walls of the nozzle 6 adjacent the plate 17.
  • the nozzle 6 is seated within a resilient bush 19 of elastomeric material. Normally, as shown in Figure 5A, the plate 17 is held securely against a proximal end of the bush 19 by the pressure of the contents of the bag 3. The ports 18 are blocked by an interior surface of the bush 19, such that nothing from within the bag 3 can pass into and out of the nozzle 6.
  • the nozzle 6 is displaced laterally (for example with a fingertip).
  • the nozzle 6 cants over, as shown in Figure 5B, opening a passage between the plate 17 and the bush 19 leading to the ports 18.
  • the pressure of gas 10 in the outer casing 2 compresses the bag 3, urging the liquid/paste composition 9 through the ports 18 and into the bore 16 of the nozzle 6, from which it is dispensed.
  • the resilient bush 19 returns the valve 5 to its original configuration, re-sealing the valve.
  • the outer casing 2 is filled with pressurised gas 10 before use, as shown in Figures 6A and 6B.
  • An end 20 of the casing 2 remote from the valve 5 is slightly dished, to help it withstand internal pressure.
  • An elastomeric self-sealing grommet 21 is implanted in the dished end 20, and a gas injection needle 22 is passed therethrough. Gas 10, such as compressed air, is injected through the needle 22 into an interior of the casing 2, and the needle 22 is then withdrawn, the grommet 21 sealing itself automatically.
  • FIG. 7 shows the container 1 in use.
  • the valve 5 has been opened by displacing the nozzle 6 and attached extension nozzle 8 from their rest position.
  • the compressed gas 10 in the outer casing 2 has partially crushed the flexible bag 3 and thus expelled much of the composition 9 held therewithin through the valve 5.
  • the bag 3 has not collapsed evenly, and a localised constriction 23 has formed.
  • this constriction 23 cannot tighten any further once it has contacted the channelling element 4.
  • composition 9 held in a portion of the bag 3 remote from the valve 5 can still flow into the passages extending longitudinally of the element 4, past the constriction 23 and into a portion of the bag 3 from which it may flow to the valve 5.
  • Even should one helical passage become blocked or filled by the bag 3, the opposite passage of that section should be available for flow of composition from the two passages of the section below to the two passages of the section above.
  • composition 9 may hence be dispensed from the container 1; the only wastage will be the small amount of composition 9 still present within the passages of the element 4 when the bag 3 has collapsed completely.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP03255760A 2002-09-17 2003-09-16 Dispositif de distribution pour compositions à durcissement anaérobie Withdrawn EP1400464A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0221499 2002-09-17
GB0221499A GB0221499D0 (en) 2002-09-17 2002-09-17 Anaerobic adhesive/sealant dispensing system
GB0317259A GB2394256B (en) 2002-09-17 2003-07-24 Dispenser for anaerobic curing compositions
GB0317259 2003-07-24

Publications (1)

Publication Number Publication Date
EP1400464A1 true EP1400464A1 (fr) 2004-03-24

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ID=31948042

Family Applications (1)

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EP03255760A Withdrawn EP1400464A1 (fr) 2002-09-17 2003-09-16 Dispositif de distribution pour compositions à durcissement anaérobie

Country Status (1)

Country Link
EP (1) EP1400464A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016019998A1 (fr) * 2014-08-06 2016-02-11 Henkel IP & Holding GmbH Ensemble pour produits anaérobies
JP5897779B1 (ja) * 2015-04-24 2016-03-30 東洋エアゾール工業株式会社 残量低減部材
JP2019119467A (ja) * 2017-12-28 2019-07-22 キョーラク株式会社 積層剥離容器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549050A (en) * 1966-05-10 1970-12-22 Sterigard Corp Pressurized dispenser having a valve extension
US4148416A (en) * 1976-08-20 1979-04-10 Metal Box Limited Aerosol containers
US4949871A (en) * 1989-02-09 1990-08-21 Aerosol Systems, Inc. Barrier pack product dispensing cans
US5169037A (en) * 1990-01-26 1992-12-08 Ccl Industries Inc. Product bag for dispensing and method for producing the same
WO2000018661A1 (fr) * 1998-09-29 2000-04-06 Loctite Corporation Emballage-aerosol pour compositions de durcissement anaerobie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549050A (en) * 1966-05-10 1970-12-22 Sterigard Corp Pressurized dispenser having a valve extension
US4148416A (en) * 1976-08-20 1979-04-10 Metal Box Limited Aerosol containers
US4949871A (en) * 1989-02-09 1990-08-21 Aerosol Systems, Inc. Barrier pack product dispensing cans
US5169037A (en) * 1990-01-26 1992-12-08 Ccl Industries Inc. Product bag for dispensing and method for producing the same
WO2000018661A1 (fr) * 1998-09-29 2000-04-06 Loctite Corporation Emballage-aerosol pour compositions de durcissement anaerobie

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016019998A1 (fr) * 2014-08-06 2016-02-11 Henkel IP & Holding GmbH Ensemble pour produits anaérobies
CN106795296A (zh) * 2014-08-06 2017-05-31 汉高知识产权控股有限责任公司 用于厌氧产品的组合体
RU2678268C2 (ru) * 2014-08-06 2019-01-24 ХЕНКЕЛЬ АйПи ЭНД ХОЛДИНГ ГМБХ Упаковка для анаэробных продуктов
US10189977B2 (en) 2014-08-06 2019-01-29 Henkel IP & Holding GmbH Pack for anaerobic products
AU2014402919B2 (en) * 2014-08-06 2019-05-02 Henkel Ag & Co. Kgaa A pack for anaerobic products
CN106795296B (zh) * 2014-08-06 2020-04-24 汉高知识产权控股有限责任公司 用于厌氧产品的组合体
JP5897779B1 (ja) * 2015-04-24 2016-03-30 東洋エアゾール工業株式会社 残量低減部材
WO2016170684A1 (fr) * 2015-04-24 2016-10-27 東洋エアゾール工業株式会社 Élément de réduction de quantité résiduelle
CN106660692A (zh) * 2015-04-24 2017-05-10 东洋喷雾工业株式会社 残量减少部件
US9932167B2 (en) 2015-04-24 2018-04-03 Toyo Aerosol Industry Co., Ltd. Remaining-amount reduction member
JP2019119467A (ja) * 2017-12-28 2019-07-22 キョーラク株式会社 積層剥離容器

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