EP0003256A1 - Flexibler schlauchförmiger Behälter und Verfahren zur Herstellung eines solchen Behälters - Google Patents

Flexibler schlauchförmiger Behälter und Verfahren zur Herstellung eines solchen Behälters Download PDF

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Publication number
EP0003256A1
EP0003256A1 EP78300769A EP78300769A EP0003256A1 EP 0003256 A1 EP0003256 A1 EP 0003256A1 EP 78300769 A EP78300769 A EP 78300769A EP 78300769 A EP78300769 A EP 78300769A EP 0003256 A1 EP0003256 A1 EP 0003256A1
Authority
EP
European Patent Office
Prior art keywords
tube
container
adhesive
constricted
filamentary
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.)
Granted
Application number
EP78300769A
Other languages
English (en)
French (fr)
Other versions
EP0003256B1 (de
Inventor
Arthur Stephen Wright
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of EP0003256A1 publication Critical patent/EP0003256A1/de
Application granted granted Critical
Publication of EP0003256B1 publication Critical patent/EP0003256B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/08—Applying binding material, e.g. to twisted bag necks
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1616—Elements constricting the neck of the bag
    • B65D33/165—Flexible elongated elements integral with or attached to bags or sacks ; Fastening thereof to the bag before closing

Definitions

  • This invention relates to a flexible tubular container which is sealed at least at one end by a compression closure embracing the gathered tube end and to a method of making the said container.
  • Such containers are generally made by dividing a continuous length of stock tubular material, usually plastics material and often in the form known as 'lay-flat' seamless tube. The closures are often applied to a filled continuous length of tube before the tube is cut transversely to separate the individual sealed containers.
  • a flexible tubular container has at least one of its ends closed by a length of filamentary material bound tightly around the container end, said container end being gathered and constricted and said filamentary material being held in position by adhesive material.
  • the filamentary material is bonded both to itself and to the tubular container by a mutually compatible adhesive material.
  • the filamentary material is advantageously wound or tied in a generally helical manner so as to extend along a length of the constricted container end.
  • Convenient filamentary binding materials include flexible tying materials such as cord, tape, string and textile yarn.
  • the adhesive material is advantageously a fast acting adhesive such as cyanoacrylate adhesive or a hot-melt adhesive comprising a mixture of thermoplastics resin and tackifying resin such as a mixture of ethylene/vinyl acetate copolymer and rosin ester.
  • the container is advantageously made from a continuous length of flexible tube by a method which comprises gathering and constricting the flexible tube at each of two spaced apart positions, winding under tension around the tube at each of said positions a length of filamentary binding material to bind the constricted tube along a portion of its length at each position, applying an adhesive material to the binding material to fix said binding material in position on the constricted portions of the tube, and cutting the applied binding material and tube transversely at positions dividing the constricted portions of the tube, whereby a container sealed at each end is defined and separated from the adjacent portions of the flexible tube.
  • the tube may be constricted, bound and cut at the two positions consecutively, simultaneously or, in any order which is convenient.
  • the tube may be cut at one end of the container either before or after the binding material is applied around the tube at the position defining the other end of the tube.
  • Tubes of smaller diameter for examnle, 5 cm diameter or less, can advantageously be gathered and constricted by the application of the filamentary material but with large diameter tubes or tubes containing highly viscous filling material it may be desirable to pre-waist the tube at the positions where the binding material is to be wound.
  • the adhesive may be applied to the binding material as it is being wound around the tube or it may be applied in a preliminary operation, the binding material serving as a carrier for the adhesive.
  • the tubular container may contain the filling material which is to be packaged in the container.
  • the filling may be a continuous length of deformable material which is displaced from the constricted portion of tube during the gathering and constriction of the tube, or it may be spaced apart discrete portions of rigid or dimensionally stable material, the binding material being applied around the tube at positions between these portions.
  • the flexible tube 1 is filled with a continuous deformable material 2 and lengths of cord 4 (Fig. 3) are wound tightly in helical manner around longitudinally spaced portions 6 of the tube 1 whereby the portions 6 are gathered together and tube 1 is closed.
  • Adhesive material is applied to the cord lengths 4 whereby the cord lengths 4 are maintained tightly bound in position on the tube portions 6.
  • the tube is then cut transversely at the positions 7, whereby the closed portions 6 and the surrounding cord lengths are divided into two parts 5, each part 5 forming a sealed closure on the tube, the portions of the tube between the adjacent cuts at positions 7 forming individual sealed containers.
  • the filling material in the plastics tube 1 of Fig. 2 is in preformed portions 3 and, in forming the individual sealed containers, the tube 1 is closed by cord lengths 4 wound around portions 6 and cut at positions 7 as described for Figs. 1, 3 and 5, the portion 6 in this case being intermediate the filling portions 3.
  • the plastics tube 1 may conveniently be a thin tube of polyethylene, polypropylene or polyvinyl chloride which may be preformed or continuously formed from sheet material during the filling process.
  • the tube may be filled, for example, by continuously pumping or extruding fluent material, or loading discrete portions of filling material into the tube.
  • the filled tube is fed past a closure applying position where, at appropriate intervals, a length of cord is helically wound around the tube to close tube portions 6.
  • Adhesive material is applied to the cord 4 or alternatively to the tube 1, to hold the cord 4 firmly in position.
  • the portion 6 is then cut transversely to divide the two closed portions 6 into two portions 5 and separate a sealed container from the following portion of filled tube 1, each portion 5 sealing an end of a container.
  • the cord 4 may conveniently be cotton, jute, or synthetic plastics string such as is used for conventional parcel binding.
  • cyanoacrylate adhesive which may be obtained from Loctite (UK) Limited as Loctite (Registered Trade Mark) superfast cyanoacrylate adhesive I.S.-415 or I.S.-495, although, as previously mentioned, hot-melt adhesives are also advantageous.
  • cyanoacrylate adhesive When the adhesives are applied to the cord, this may be done before or after the cord is wound on the tube 1. Alternatively, the tube 1 may be pre-coated with adhesive before the cord 4 is wound around it. In any case the adhesive will advantageously bond the cord to itself and to the tube 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP78300769A 1978-01-30 1978-12-07 Flexibler schlauchförmiger Behälter und Verfahren zur Herstellung eines solchen Behälters Expired EP0003256B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB368778 1978-01-30
GB368778 1978-01-30

Publications (2)

Publication Number Publication Date
EP0003256A1 true EP0003256A1 (de) 1979-08-08
EP0003256B1 EP0003256B1 (de) 1981-09-09

Family

ID=9763056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78300769A Expired EP0003256B1 (de) 1978-01-30 1978-12-07 Flexibler schlauchförmiger Behälter und Verfahren zur Herstellung eines solchen Behälters

Country Status (11)

Country Link
EP (1) EP0003256B1 (de)
AU (1) AU4268978A (de)
BR (1) BR7900523A (de)
CA (1) CA1117492A (de)
DE (1) DE2861064D1 (de)
HK (1) HK8583A (de)
IE (1) IE47763B1 (de)
IT (1) IT1110914B (de)
MY (1) MY8300188A (de)
NZ (1) NZ189208A (de)
ZA (1) ZA786996B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6088999A (en) * 1996-07-31 2000-07-18 Olaechea; Rosalina Paniagua Method of closing tubular bags for fruit and vegetable products

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB235762A (en) * 1924-09-30 1925-06-25 Reckitt & Sons Ltd Improvements in and relating to fastenings for bags of washing blue and other colours
US3397775A (en) * 1965-12-22 1968-08-20 Mayer & Co Inc O Clip and seal package
US3922834A (en) * 1974-04-03 1975-12-02 Norpak Machines Limited Apparatus for closing of wrapping bags or sleeves

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB235762A (en) * 1924-09-30 1925-06-25 Reckitt & Sons Ltd Improvements in and relating to fastenings for bags of washing blue and other colours
US3397775A (en) * 1965-12-22 1968-08-20 Mayer & Co Inc O Clip and seal package
US3922834A (en) * 1974-04-03 1975-12-02 Norpak Machines Limited Apparatus for closing of wrapping bags or sleeves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6088999A (en) * 1996-07-31 2000-07-18 Olaechea; Rosalina Paniagua Method of closing tubular bags for fruit and vegetable products

Also Published As

Publication number Publication date
EP0003256B1 (de) 1981-09-09
IE47763B1 (en) 1984-06-13
HK8583A (en) 1983-03-10
NZ189208A (en) 1981-12-15
AU4268978A (en) 1979-08-09
BR7900523A (pt) 1979-08-28
MY8300188A (en) 1983-12-31
IE782451L (en) 1979-07-30
ZA786996B (en) 1979-11-28
IT7919414A0 (it) 1979-01-18
DE2861064D1 (en) 1981-11-26
IT1110914B (it) 1986-01-13
CA1117492A (en) 1982-02-02

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