EP0003256B1 - Flexible tubular container and method of making it - Google Patents
Flexible tubular container and method of making it Download PDFInfo
- Publication number
- EP0003256B1 EP0003256B1 EP78300769A EP78300769A EP0003256B1 EP 0003256 B1 EP0003256 B1 EP 0003256B1 EP 78300769 A EP78300769 A EP 78300769A EP 78300769 A EP78300769 A EP 78300769A EP 0003256 B1 EP0003256 B1 EP 0003256B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- container
- filamentary material
- length
- constricted
- 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
Links
Images
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 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 having at least one of its ends closed by a length of filamentary material tightly wound in a generally helical manner along a gathered and constricted portion of said end and held in position by adhesive material, is characterised in that the container end and the filamentary material are coterminous and substantially the whole of the end turn of filamentary material lies in the same plane as the container end.
- the filamentary material is bonded both to itself and to the tubular container by a mutually compatible adhesive material.
- Convenient filamentary 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 a portion of the flexible tube, binding the constricted portion with a length of filamentary material tightly wound in a generally helical manner along the constricted portion of the tube and applying adhesive material to the filamentary material to fix said filamentary material in position on the constricted tube portion, and is characterised in that the constricted portion of the tube and length of filamentary material are cut transversely to define two closed container ends on adjacent portions of the flexible tube with each closed end and substantially the whole of the turn of filamentary material adjacent thereto lying in the same piane.
- a continuous length of flexible tube is gathered and constricted at each of two spaced apart positions, a length of filamentary material is tightly wound in a generally helical manner along each constricted tube portion and fixed thereon with adhesive material and the filamentary material and constricted tube portions are cut transversely at each position to separate a tubular container closed at both ends from the adjacent closed 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 filamentary material is applied around the tube at the position defining the other end of the tube.
- Tubes of smaller diameter 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 filamentary material is to be wound.
- the adhesive may be applied to the filamentary material as it is being wound around the tuoe or it may be applied in a preliminary operation, the filamentary 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 filamentary 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-meit 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 precoated 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)
- Adhesives Or Adhesive Processes (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
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 EP0003256A1 (en) | 1979-08-08 |
EP0003256B1 true EP0003256B1 (en) | 1981-09-09 |
Family
ID=9763056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP78300769A Expired EP0003256B1 (en) | 1978-01-30 | 1978-12-07 | Flexible tubular container and method of making it |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0003256B1 (xx) |
AU (1) | AU4268978A (xx) |
BR (1) | BR7900523A (xx) |
CA (1) | CA1117492A (xx) |
DE (1) | DE2861064D1 (xx) |
HK (1) | HK8583A (xx) |
IE (1) | IE47763B1 (xx) |
IT (1) | IT1110914B (xx) |
MY (1) | MY8300188A (xx) |
NZ (1) | NZ189208A (xx) |
ZA (1) | ZA786996B (xx) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0823376B1 (en) * | 1996-07-31 | 2001-12-12 | Rosalina Paniagua Olaechea | Method for closing tubular bags for fruit and vegetables products |
Family Cites Families (3)
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 |
-
1978
- 1978-12-07 DE DE7878300769T patent/DE2861064D1/de not_active Expired
- 1978-12-07 EP EP78300769A patent/EP0003256B1/en not_active Expired
- 1978-12-12 IE IE2451/78A patent/IE47763B1/en unknown
- 1978-12-14 ZA ZA00786996A patent/ZA786996B/xx unknown
- 1978-12-18 NZ NZ189208A patent/NZ189208A/xx unknown
- 1978-12-19 AU AU42689/78A patent/AU4268978A/en active Pending
-
1979
- 1979-01-10 CA CA000319427A patent/CA1117492A/en not_active Expired
- 1979-01-18 IT IT19414/79A patent/IT1110914B/it active
- 1979-01-29 BR BR7900523A patent/BR7900523A/pt unknown
-
1983
- 1983-03-10 HK HK85/83A patent/HK8583A/xx unknown
- 1983-12-30 MY MY188/83A patent/MY8300188A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
AU4268978A (en) | 1979-08-09 |
ZA786996B (en) | 1979-11-28 |
MY8300188A (en) | 1983-12-31 |
NZ189208A (en) | 1981-12-15 |
CA1117492A (en) | 1982-02-02 |
HK8583A (en) | 1983-03-10 |
IT1110914B (it) | 1986-01-13 |
IT7919414A0 (it) | 1979-01-18 |
IE782451L (en) | 1979-07-30 |
EP0003256A1 (en) | 1979-08-08 |
DE2861064D1 (en) | 1981-11-26 |
BR7900523A (pt) | 1979-08-28 |
IE47763B1 (en) | 1984-06-13 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Designated state(s): BE CH DE FR GB SE |
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17P | Request for examination filed | ||
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AK | Designated contracting states |
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REF | Corresponds to: |
Ref document number: 2861064 Country of ref document: DE Date of ref document: 19811126 |
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RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: IMPERIAL CHEMICAL INDUSTRIES PLC |
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PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19831114 Year of fee payment: 6 |
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