EP0210052A2 - Verpackungstube - Google Patents

Verpackungstube Download PDF

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Publication number
EP0210052A2
EP0210052A2 EP86305502A EP86305502A EP0210052A2 EP 0210052 A2 EP0210052 A2 EP 0210052A2 EP 86305502 A EP86305502 A EP 86305502A EP 86305502 A EP86305502 A EP 86305502A EP 0210052 A2 EP0210052 A2 EP 0210052A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
packaging tube
tube
inner cylinder
tube according
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Withdrawn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
EP86305502A
Other languages
English (en)
French (fr)
Other versions
EP0210052A3 (de
Inventor
Patrick Francis Mcdonnell
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.)
Henkel Loctite Ireland Ltd
Original Assignee
Henkel Loctite Ireland Ltd
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 Henkel Loctite Ireland Ltd filed Critical Henkel Loctite Ireland Ltd
Publication of EP0210052A2 publication Critical patent/EP0210052A2/de
Publication of EP0210052A3 publication Critical patent/EP0210052A3/de
Withdrawn legal-status Critical Current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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/14—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with linings or inserts

Definitions

  • This invention relates to a packaging tube for dispensing liquid materials and is particularly intended for use with adhesives, more especially cyanoacrylate adhesives, including thixotropic adhesives, but is also useful for other reactive liquid materials.
  • Metal tubes in particular aluminium tubes, are widely used for packaging purposes because they are impervious to atmospheric moisture, oxygen or contaminants. Such tubes are generally regarded as the ideal package for cyanoacrylate adhesives in particular.
  • the tubes generally have a nozzle at one end and are initially open at the other end. They are filled with material by charging the appropriate quantity through the open end of the tube before it is crimped. In order to avoid part of the contents being expressed during the crimping process, the tube is not filled completely and so air is usually trapped inside the tube, between the crimp and the contents. As crimping is completed, the pressure of this trapped air is increased.
  • the closed end of the tube usually has a membrane or nozzle which is punctured when the contents are about to be dispensed.
  • the tube is held with the crimped end downwards during the puncturing procedure.
  • the contents With low viscosity materials the contents will usually flow downwards and the air pressure will be normalised.
  • the compressed air at the crimped end of the tube is prevented from escaping by non-mobile material in the nozzle area.
  • Resilient plastics tubes are known for packaging purposes, and are used for example with anaerobic adhesives. Due to the elastic properties of the wall of such a tube, discrete drops of material can be dispensed by finger pressure and the tube then resumes its original shape.
  • plastics tubes currently available are pervious to moisture, oxygen and pollutants and are unacceptable for cyanoacrylates and other reactive materials which must be kept sealed, from moisture in particular, during a shelf life which, desirably, can be as long as 2 years.
  • U.S. Patent 2,596,592 Parker describes a collapsible dispenser tube having arcuate resilient bands arranged longitudinally therein, which bands retain the tube in its expanded condition when the tube is not in use. However these bands are part of a tube closing mechanism of special structure.
  • U.S. Patent 2,123,558 Altheide describes a device for applying fluid to the scalp, which device is wedge shaped and has a U-shaped sheet of metal or other spring material within it to urge the walls normally outwardly.
  • the present invention provides a packaging tube for dispensing liquid materials comprising:-
  • the outer cylinder is a metal tube particularly an aluminium tube while the inner cylinder is a cylindrical sleeve of resilient material, suitably plastics material such as polyethylene, more particularly high density or medium density polyethylene.
  • the sleeve has an external diameter marginally less than the internal diameter of the outer cylinder.
  • the sleeve has a wall thickness in the range 0.1 - 1.0 mm, more particularly 0.1 - 0.5 mm, especially about 0.2 - 0.25 mm.
  • the wall thickness is such that the tube is easily compressed by finger pressure (to dispense contents) and yet is sufficiently resilient to ensure that the tube regains its original shape without permanent dents being formed.
  • the sleeve suitably extends continuously for a major part of the length of the tube, preferably from the closed end of the tube to a point adjacent to the crimping region.
  • the inner cylinder may alternatively consist of a sleeve with diametrical struts inside it or it may have a more elaborate structure inside the sleeve, for example a three dimensional honeycomb matrix made from a suitable plastic material.
  • This type of insert could be specially shaped to conform with the shape of the crimped tube.
  • the inner cylinder may also consist of a stainless steel liner of appropriate gauge to achieve the desired springiness as described above for the plastic cylinder, although care must be taken to use a well-machined stainless steel cylinder which has no sharp edges which could cut through the outer cylinder.
  • a further alternative insert may be a strip of plastic or spring metal rolled into a cylindrical coil of suitable length and inserted in the metal tube. The coil will then take up the internal shape of the tube and provide the necessary resilience.
  • the inner cylinder can be manufactured in a range of materials and various shapes or designs.
  • the materials would be chosen not only for functionality but also with due regard to compatibility with cyanoacrylate adhesive or other proposed contents.
  • Particularly suitable materials are the grades of polyethylene which are used in making bottles for cyanoacrylate adhesives.
  • the structure of the inner cylinder should be such that it does not interfere appreciably with the flow of the contents to the nozzle when the tube is compressed under finger pressure.
  • the volume of the inner cylinder should be sufficiently small that it does not occupy an excessive proportion of the volume of the tube and in particular should not prevent the normal charge of contents being filled in to the tube without the contents occupying part of the crimp region of the tube.
  • the available volume in a tube intended to hold 3 g of cyanoacrylate adhesive is approximately 5.5 cc.
  • the inner cylinder does not occupy more than about 29%-30% of this volume.
  • the inner cylinder is preferably designed so that it can be used to support the walls of existing standard metal tubes.
  • a laminated sheet material comprising metal and plastics material may be used to form the tube such that the metal forms the outer cylinder and the plastics material forms the inner cylinder.
  • a resilient support means in accordance with the invention converts a metal tube (having the desired barrier properties) into a resilient package which eliminates unwanted material being dispensed by spontaneous emission with resultant wastage and risk of contaminating surfaces, which is an especially important consideration when reactive materials such as cyanoacrylate adhesives are involved.
  • Suitable inner cylinders can be added to existing metal tubes during tube manufacture, or by a manual or automatic operation prior to filling.
  • the exact degree of springiness required can be defined by changing the material and/or shape of the inner cylinder.
  • the package of the invention permits material to be dispensed in discrete drops from the metal tube. This is a significant advance in safety when using reactive adhesives such as cyanoacrylates. This safety factor applies to both thixotropic grades and conventional low viscosity cyanoacrylatte products and other materials.
  • the package permits or induces suck-back of material from the nozzle area when finger pressure is released. This event reduces or eliminates blockage of the narrow nozzle area which can occur by setting up of materials, especially adhesives, and therefore facilitates frequent re-use of the package.
  • a conventional metal tube 1 preferably of aluminium, has a sealed nozzle 2 at the closed end 5 and is initially open at the other end 6 (Fig. 1).
  • a cylindrical plastics sleeve 3 has been inserted into the tube from the open end 6 and pushed to the closed end of the tube.
  • the sleeve extends for approximately two thirds of the length of the tube, from the closed interior end of the tube (i.e. the point where the cylindrical wall terminates and the tube tapers to the nozzle 2) to a point 7 which will be adjacent to the crimping region.
  • the tube 1 is filled with thixotropic cyanoacrylate adhesive from the open end and crimped at 4 in the usual way, trapping air between the crimp and the contents.
  • thixotropic cyanoacrylate adhesive from the open end and crimped at 4 in the usual way, trapping air between the crimp and the contents.
  • An aluminium tube of length 62 mm and internal diameter 13.6 mm was fitted with an insert consisting of a plastic cylindrical sleeve of length 40 mm, external diameter 13.0 mm and wall thickness 1 mm.
  • the tube was then filled with 3g. of thixotropic cyanoacrylate adhesive and the open end crimped.
  • the nozzle was then pierced to allow adhesive to be dispensed by applying finger pressure to the body of the tube. It was found that adhesive only dispensed when finger pressure was applied and ceased instantly on release of finger pressure. The adhesive was also observed to be sucked back or withdrawn from the nozzle area.
  • a control aluminium tube of identical dimensions was filled with thixotropic grade cyanoacrylate as above but without inclusion of the insert. On piercing the nozzle and applying hand pressure to dispense the adhesive, it was observed that adhesive continued to ooze from nozzle for several minutes after finger pressure was released.
  • Strips of acetate film (as used to make photocopier slides) of width 40 mm and lengths 30, 50, 70 and 100 mm were prepared. The various lengths of film were then rolled to fit the open end of 62 mm x 13.0 mm diameter aluminium tubes. As the roll of film was under tension, it expanded to conform with the interior of the tube. The tubes were then filled with 3g. of thixotropic grade cyanoacrylate adhesive and crimped in the normal way. The nozzles were then pierced and finger pressure applied to the tube to express the adhesive. Results with the various length of acetate film were as follows: These results show that with the appropriate length of film, sufficient to define a resilient cylinder within the tube, the desired properties can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP86305502A 1985-07-17 1986-07-17 Verpackungstube Withdrawn EP0210052A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE179285A IE851792L (en) 1985-07-17 1985-07-17 Packaging tube
IE179285 1985-07-17

Publications (2)

Publication Number Publication Date
EP0210052A2 true EP0210052A2 (de) 1987-01-28
EP0210052A3 EP0210052A3 (de) 1987-09-23

Family

ID=11030943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86305502A Withdrawn EP0210052A3 (de) 1985-07-17 1986-07-17 Verpackungstube

Country Status (2)

Country Link
EP (1) EP0210052A3 (de)
IE (1) IE851792L (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5284897A (en) * 1992-11-16 1994-02-08 Borden, Inc. Thixotropic adhesive gel
US5306749A (en) * 1992-11-16 1994-04-26 Borden, Inc. Thixotropic wood adhesive gel
US5473005A (en) * 1992-11-16 1995-12-05 Borden, Inc. Thixotropic adhesive gel
US5501370A (en) * 1993-07-23 1996-03-26 Taoka Chemical Company, Limited Container with nozzle cap
EP0918018A1 (de) * 1997-11-21 1999-05-26 Courtaulds Packaging Inc. Harter thermoplastischer Ausdruckbehälter mit selbstdichtendem Ventil
US6896838B2 (en) 2001-11-21 2005-05-24 Closure Medical Corporation Halogenated polymeric containers for 1, 1-disubstituted monomer compositions
US7766190B2 (en) * 2007-06-29 2010-08-03 Fang-Pin Chen Sealed crimp tube with stiffener
WO2017021785A1 (en) 2015-07-31 2017-02-09 Afinitica Technologies, S.L. Fast light curing cyanoacrylate compositions

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1352355A (en) * 1919-11-18 1920-09-07 Cleveland Edgar Leroy Collapsible tube
FR759104A (fr) * 1932-10-18 1934-01-29 Marabuwerke A G Tube pour matières liquides ou pâteuses
US2596592A (en) * 1950-07-19 1952-05-13 Leonard A Parker Self-closing paste tube

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5284897A (en) * 1992-11-16 1994-02-08 Borden, Inc. Thixotropic adhesive gel
US5306749A (en) * 1992-11-16 1994-04-26 Borden, Inc. Thixotropic wood adhesive gel
US5322880A (en) * 1992-11-16 1994-06-21 Borden, Inc. Thixotropic adhesive gel
US5473005A (en) * 1992-11-16 1995-12-05 Borden, Inc. Thixotropic adhesive gel
USRE35144E (en) * 1992-11-16 1996-01-09 Borden, Inc. Thixotropic adhesive gel
US5501370A (en) * 1993-07-23 1996-03-26 Taoka Chemical Company, Limited Container with nozzle cap
EP0918018A1 (de) * 1997-11-21 1999-05-26 Courtaulds Packaging Inc. Harter thermoplastischer Ausdruckbehälter mit selbstdichtendem Ventil
US6896838B2 (en) 2001-11-21 2005-05-24 Closure Medical Corporation Halogenated polymeric containers for 1, 1-disubstituted monomer compositions
US7766190B2 (en) * 2007-06-29 2010-08-03 Fang-Pin Chen Sealed crimp tube with stiffener
WO2017021785A1 (en) 2015-07-31 2017-02-09 Afinitica Technologies, S.L. Fast light curing cyanoacrylate compositions
US10626310B2 (en) 2015-07-31 2020-04-21 Afinitica Technologies, S.L. Fast light curing cyanoacrylate compositions

Also Published As

Publication number Publication date
EP0210052A3 (de) 1987-09-23
IE851792L (en) 1987-01-17

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Inventor name: MCDONNELL, PATRICK FRANCIS