EP0776828A2 - Verfahren zum Aufsetzen eines Verschlusses für einen Beutel - Google Patents

Verfahren zum Aufsetzen eines Verschlusses für einen Beutel Download PDF

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Publication number
EP0776828A2
EP0776828A2 EP96308596A EP96308596A EP0776828A2 EP 0776828 A2 EP0776828 A2 EP 0776828A2 EP 96308596 A EP96308596 A EP 96308596A EP 96308596 A EP96308596 A EP 96308596A EP 0776828 A2 EP0776828 A2 EP 0776828A2
Authority
EP
European Patent Office
Prior art keywords
bag
closure element
elements
closure
applying
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Withdrawn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
EP96308596A
Other languages
English (en)
French (fr)
Other versions
EP0776828A3 (de
Inventor
Rodney Ernest Sullivan
Neill Peter Gillespie
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.)
Minigrip Flexible Packaging Ltd
Original Assignee
Minigrip Flexible Packaging 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 Minigrip Flexible Packaging Ltd filed Critical Minigrip Flexible Packaging Ltd
Publication of EP0776828A2 publication Critical patent/EP0776828A2/de
Publication of EP0776828A3 publication Critical patent/EP0776828A3/de
Withdrawn legal-status Critical Current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
    • B65B51/046—Applying a closure element to the mouths of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/004—Closing bags

Definitions

  • This invention relates to a method of applying a closure to a bag and/or a bag and has been devised particularly though not necessarily solely for the use in applying a closure to a gusseted bag.
  • closures particularly closures of the type which use a reclose element or zipper is in some circumstances difficult. This arises because the usual methods of applying such a closure to a bag are to bring the bag material and the closure elements together with the strip of closure material and the web of material which will form the bags moving in substantially parallel directions. This enables a substantially continuous process to be effected. Either the closures can be applied and the bags filled from the bottom or the closure can be applied in an open formation and the bag filled from the top before the bag is reclosed.
  • the invention consists in a method of applying a closure to a bag comprising the steps of forming individual bags from a web of material moving in a first direction, providing an elongated closure element or elements, moving the elongated closure element or elements in the direction of its longitudinal axis in a second direction, sequentially applying the closure element or elements to the mouth of individual bags, sealing the closure element or elements to the bag and cutting the closure element or elements between individual bags, the first direction and the second direction not being substantially parallel.
  • the bag is filled before said closure element or elements is applied.
  • the bag is filled after the closure element or elements is applied.
  • the angle between the first direction and the second direction is substantially a right angle.
  • the method further includes the step of sealing the bag to provide a substantially hermetic seal.
  • the bag comprises a gusseted bag.
  • closure element or elements comprises a strip or tape of material having mutually engageable reclose elements thereon.
  • the invention may broadly be said to consist in a bag when formed by a method according to any one of the preceding paragraphs.
  • bag When used herein the term bag is sufficiently broad to cover a tube of material at each end from which a closed bag will be formed.
  • gusseted bags are formed by forming a tube of material, squeezing inwardly opposite parts of the bag into a flattened formation to provide a construction such as substantially shown at 1 in figure 1.
  • the web so formed will be drawn off in a direction along the longitudinal axis of the web, for example, in the direction of arrow 2.
  • the bag may be formed by taking a sheet of film, folding it and sealing the free edges before forming the gussets substantially as above described. As the web moves the bottom of the bag can be cut and sealed, for example, substantially at position 3 in figure 1.
  • the making is shown substantially horizontal but of course could be vertical or other angles in between.
  • the gusseted bag 4 formed by the above process is shown in figure 2 and the bag is filled in the direction of arrow 5.
  • the bags are moving in the direction of arrow 6 which may be in the same direction as the arrow 2.
  • the edges 7 of the mouth of the bag are brought together as indicated at 16 in figure 2 and a closure element strip 8 moving substantially in the direction of arrow 9 is brought into position so that the closure element strip 8 is positioned over the edges 7.
  • the closure element may be substantially an inverted U shape in cross-section and include reclose elements 10 which may take the form of a co-operating narrow mouthed groove and a bulbous rib so that the rib can be a snap fit into the groove and also allow for a snap removal.
  • the strip 8 is positioned substantially as shown in figure 3 where the line 9 is the top of the bag and the pecked line 12 shows the position of a seal.
  • the seal is substantially parallel to the longitudinal axis of the strip 8 to seal the closure element to the bag but also extends upwardly at each end so as to close the closure element.
  • Heat sealing techniques which are well known can be utilised.
  • the upward extending parts 12a and 12b above described are placed as close as possible to the end of the strip. The strip is then cut substantially at the position of arrow 11 and the bag removed.
  • the closure element 8 could be replaced by separate strips each having part of the reclosure construction 10 thereon.
  • Suitable indexing apparatus is provided to co-ordinate the movements of the bag, strip and filling apparatus.
  • a bag 15 is provided which is moving in the direction of the symbol 16 (that is to say into the page). Alternatively the bag 15 could be moving out of the page.
  • the corner of the bag is cut at line 16 and a strip 8 moving in direction 18 is applied having reclose elements indicated by the dotted line 19.
  • the reclose element is positioned substantially as shown in figure 3 but across the cut off corner of the bag 15.
  • a sealing element is provided which seals along lines 20, 20a and 20b to effect a seal.
  • a tear thread 21 can be provided if desired.
  • the movement of the reclose elements in this embodiment is oblique when compared to the movements in Figure 2 but the movements are at a right angle to the direction of movement of the bag.
  • bag 4 can be a bag other than a gussetted bag and in such a case the reclose element may be applied to an unfilled bag open at the bottom end for bottom filling.
  • the invention allows reclose elements to be applied to a bag in discrete fashion rather than in a connected chain.
  • a method of forming a bag in which a reclose element is connected to in particular a gusseted bag although other types of bag can be used.
  • a reclose element is connected to in particular a gusseted bag although other types of bag can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Bag Frames (AREA)
EP96308596A 1995-11-29 1996-11-28 Verfahren zum Aufsetzen eines Verschlusses für einen Beutel Withdrawn EP0776828A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ95280135 1995-11-29
NZ280135A NZ280135A (en) 1995-11-29 1995-11-29 Attaching closure element to mouths of plastic bags

Publications (2)

Publication Number Publication Date
EP0776828A2 true EP0776828A2 (de) 1997-06-04
EP0776828A3 EP0776828A3 (de) 1998-05-13

Family

ID=19925489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96308596A Withdrawn EP0776828A3 (de) 1995-11-29 1996-11-28 Verfahren zum Aufsetzen eines Verschlusses für einen Beutel

Country Status (3)

Country Link
EP (1) EP0776828A3 (de)
AU (1) AU7406996A (de)
NZ (1) NZ280135A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6177172B1 (en) 1992-10-26 2001-01-23 Innoflex Incorporated Zippered film and bag
ITMI20100371A1 (it) * 2010-03-05 2011-09-06 Concetti Spa Apparecchiatura di realizzazione di mezzi di apertura/chiusura della bocca di sacchi e macchina di riempimento/sigillatura di sacchi dotata di detta apparecchiatura

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB237799A (en) * 1924-12-23 1925-08-06 Angel Int Corp Improvements in apparatus for closing and sealing tubular or like receptacles
GB292447A (en) * 1927-03-28 1928-06-21 Angel Int Corp Improvements in and relating to means for use in closing paper and like receptacles
FR749745A (fr) * 1932-04-20 1933-07-28 Carnaud & Forges Procédé et dispositif pour la fermeture des sacs en papier
US3328220A (en) * 1963-06-04 1967-06-27 St Regis Paper Co Method and apparatus for making plastic bags
US3439468A (en) * 1963-10-31 1969-04-22 Edward Bok Method of manufacturing bag closures

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6177172B1 (en) 1992-10-26 2001-01-23 Innoflex Incorporated Zippered film and bag
US6779921B2 (en) 1992-10-26 2004-08-24 Innoflex Incorporated Zippered film and bag
ITMI20100371A1 (it) * 2010-03-05 2011-09-06 Concetti Spa Apparecchiatura di realizzazione di mezzi di apertura/chiusura della bocca di sacchi e macchina di riempimento/sigillatura di sacchi dotata di detta apparecchiatura
WO2011107400A1 (en) * 2010-03-05 2011-09-09 Concetti S.P.A. Apparatus for producing means for opening/closing the mouth of bags and bag filling/sealing machine provided with said apparatus

Also Published As

Publication number Publication date
NZ280135A (en) 1997-09-22
EP0776828A3 (de) 1998-05-13
AU7406996A (en) 1997-06-05

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