EP0254541A2 - Plastikbeutelschmelzverschluss und Apparat zu dessen Herstellung - Google Patents

Plastikbeutelschmelzverschluss und Apparat zu dessen Herstellung Download PDF

Info

Publication number
EP0254541A2
EP0254541A2 EP87306457A EP87306457A EP0254541A2 EP 0254541 A2 EP0254541 A2 EP 0254541A2 EP 87306457 A EP87306457 A EP 87306457A EP 87306457 A EP87306457 A EP 87306457A EP 0254541 A2 EP0254541 A2 EP 0254541A2
Authority
EP
European Patent Office
Prior art keywords
gathered
bag
rows
adjacent
throat portion
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
EP87306457A
Other languages
English (en)
French (fr)
Other versions
EP0254541A3 (en
EP0254541B1 (de
Inventor
Arnold Lipes
George Soga
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.)
Packaging Automation Machinery Co Ltd
Original Assignee
Packaging Automation Machinery Co 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 Packaging Automation Machinery Co Ltd filed Critical Packaging Automation Machinery Co Ltd
Priority to AT87306457T priority Critical patent/ATE86201T1/de
Publication of EP0254541A2 publication Critical patent/EP0254541A2/de
Publication of EP0254541A3 publication Critical patent/EP0254541A3/en
Application granted granted Critical
Publication of EP0254541B1 publication Critical patent/EP0254541B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the present invention relates to an improved fused closure for a plastic bag and an apparatus for effecting the closure.
  • the closure consists of a randomly gathered throat portion of a plastic bag being fused together by at least two or more spaced apart rows of heat conductive needles penetrated in the throat portion.
  • closure elements are often not properly secured to the bag and become easily undone. Also such elements require special machinery for application thereof to a filled bag throat portion. Further, it is often necessary to stop the bagging machinery whereby to correct a malfunction in such wire or tab applicator or to load the applicator with closure tapes or tabs. Such applicator devices are also time and labour consuming and often require adjustment or repair when parts becomes defective or worn. Most prior art closure devices are also not tamper-proof and can easily be removed from such bags.
  • the present invention overcomes the above-­mentioned disadvantages by providing a novel seal for a plastic bag wherein the throat portion is heat sealed by the use of heated penetrating needles.
  • a plastic bag In the prior art, it is known to heat seal a plastic bag by the use of heated penetrating needles.
  • U.K. Patent 2034278 which discloses a method and apparatus for effecting this type heat seal.
  • the disadvantage of that method and apparatus is that the plastic bag must be oriented vertically so as to have its open end in an erect position, and it is then necessary to fold this open end portion of the bag into a specific zig-zag fashion before the bag is pierced with warm needles. This is often difficult with a product in the bag.
  • Another feature of the present invention is to provide a plastic bag seal formed in a randomly gathered throat portion and having at least two or more rows of spaced apart fused zones of plastic material disposed about a plurality of needle holes.
  • Another feature of the present invention is to provide a plastic bag seal wherein the fused needle holes in at least two or more rows are offset from one another.
  • the present invention provides a plastic bag for retaining a content therein.
  • the bag has a sealed gathered throat portion adjacent an end opening thereof.
  • the sealed gathered throat is formed by randomly disposed wall portions of plastic material fused together by two or more rows of spaced apart fused zones of plastic material disposed about a plurality of needle holes.
  • an apparatus for fusing a gathered throat of a plastic bag comprises means for gathering in a random fashion a circumferential portion of a plastic bag adjacent an end opening thereof to form a gathered throat portion, pressing means for pressing together randomly disposed plastic material in the gathered throat portion, said pressing means having two or more spaced apart rows of needle receiving bores disposed adjacent one another in differing planes, and fusing means having two or more rows of heat conductive needles movable in and out of the bores and across the plastic material in the gathered throat portion to fuse plastic material of adjacent randomly disposed wall portions of the thermal plastic material in the area of the penetrating needles and in adjacent spaced planes.
  • the apparatus comprises gathering means in the form of two pairs of jaw plates 12 which are spaced apart to gather a circumferential portion of the bag 10 adjacent the open end 13 of the bag.
  • a pair of pressing plates 14 is provided with each plate disposed on opposite sides of the gathered throat 11 and one or both are movable inwardly towards one another in the direction of arrows 15 whereby to press the gathered throat portion to collapse adjacent randomly disposed wall portions of the plastic material into facial con­tact between parallel opposed surfaces of the plates.
  • These pressing plates 14 are provided with needle bores 16 in at least two or more spaced apart rows 21 (see Fig. 3) of needle receiving bores 16.
  • the pressing plates 14 are also connected to a piston rod 9 ⁇ of a respective piston cylinder 9 to effect a synchronous displacement thereof.
  • a fusing means in the form of a heat conductive body or block 17 having a plural­ity of needles 18 disposed in two or more rows, and associated with respective bores 16, is movable by a piston 8 towards one of the pressing plates 14 after the pressing plates have collapsed the random gathered throat portion of the bag whereby to penetrate the bag material and fuse the plastic material about the needle holes made by the heated needles whereby to form at least two rows of spaced apart fused zones of plastic material disposed about these needle holes.
  • each set of jaw plates comprises opposed plates 12 and 12 ⁇ each having a jaw opening 19 at an end thereof.
  • the jaw opening as herein shown is a V-shape opening gradually tapering to a narrow gathered zone wherein the bag is finally gathered. This is effected by having each plate 12 and 12 ⁇ disposed in closely spaced parallel planes with the jaw openings 19 facing one another.
  • Displace­ment means in the form of piston rods 20 move the jaw plates towards one another in the direction of arrows 21 whereby to gather a peripheral portion adjacent the open end 13 of the bag to form the restricted throat portion, as shown in Figure 1. After the throat portion is formed, the jaw plates move the bag between the pressing plates 14 or the pressing plates move into position. It is pointed out that one of the jaw plates 12 or 12 ⁇ may be replaced by any bag engagement means to displace the bag material in the throat region of the bag, into the jaw opening 19 of the jaw plate.
  • the throat portion 11 is formed of randomly disposed wall portions of the plastic bag.
  • the throat portion is com­pressed whereby the randomly disposed wall portions of the bag material are pressed together so that adjacent wall portions are placed in facial contact. This is illustrated in Figure 5.
  • the pressing plates are better illustrated in Figure 3 and as shown comprise three rows, namely rows 21, 21 ⁇ and 21 ⁇ of needle receiving bores. Also, it can be seen that the bores in the outer rows, namely rows 21 and 21 ⁇ are offset from the bores in the center row 21 ⁇ . which provides a more rigid seal. It has been found that if only a single row of sealing holes are utilized, the seal is not strong enough and will accidentally break when goods are in the sealed bag and the seal is subjected to normal stress. Also the needles 18 are disposed on the block 17 in an ident­ical row fashion as the disposition of the needle bag 16.
  • the block includes a resistive element 22 disposed therein and connected to a source of electricity via wires 23 in order to heat the support block 17 and consequently the needles 18 which are also constructed of heat conductive material.
  • the needles are constructed of tungsten steel while the support block is constructed of brass.
  • block 17 is moved in close proximity to one of the pressing plates 14 and immediately retracted there­from. This permits the needles 18 to penetrate through the randomly gathered throat portion 11 of the bag to melt plastic thereabout to effect a plurality of pin seals in adjacent rows.
  • Figures 6 and 7 are enlarged views showing the structure of the pin seals 27 in the fused zones.
  • Figure 6 illustrates one of these fused pin seals as being the area designated by the section "x" about the needle hole 25.
  • the random pleats 11 ⁇ of plastic material of the wall portions in the pe­riphery of the throat portion have fused together to form a solid plastic wall 26 about the needle hole 25.
  • Figure 7 shows the disposition of three rows 27, 27 ⁇ and 27 ⁇ of fused pin seals extending across the throat portion 11 and corresponding to the rows of needles and holes 21, 21 ⁇ and 22 ⁇ in the pressing plate 14 and needle support block 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Bag Frames (AREA)
EP87306457A 1986-07-22 1987-07-21 Plastikbeutelschmelzverschluss und Apparat zu dessen Herstellung Expired - Lifetime EP0254541B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87306457T ATE86201T1 (de) 1986-07-22 1987-07-21 Plastikbeutelschmelzverschluss und apparat zu dessen herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA514377 1986-07-22
CA000514377A CA1260884A (en) 1986-07-22 1986-07-22 Fused plastic bag closure and apparatus for making same

Publications (3)

Publication Number Publication Date
EP0254541A2 true EP0254541A2 (de) 1988-01-27
EP0254541A3 EP0254541A3 (en) 1989-01-25
EP0254541B1 EP0254541B1 (de) 1993-03-03

Family

ID=4133611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87306457A Expired - Lifetime EP0254541B1 (de) 1986-07-22 1987-07-21 Plastikbeutelschmelzverschluss und Apparat zu dessen Herstellung

Country Status (9)

Country Link
EP (1) EP0254541B1 (de)
JP (1) JPS6333228A (de)
CN (1) CN87104445A (de)
AT (1) ATE86201T1 (de)
AU (1) AU600286B2 (de)
CA (1) CA1260884A (de)
DE (1) DE3784399T2 (de)
IN (1) IN169159B (de)
NZ (1) NZ220640A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8811289U1 (de) * 1988-09-07 1990-01-04 Spang & Brands Maschinenfabrik GmbH & Co, 6382 Friedrichsdorf Schweißverschlußvorrichtung für Kunststoffbeutel
DE4102269A1 (de) * 1989-04-11 1991-08-29 Poly Vac Sa Versiegelungsvorrichtung fuer toepfe, becher und dergleichen gefaesse
DE4102268A1 (de) * 1990-04-27 1991-10-31 Poly Vac Sa Vorrichtung zum versiegeln von toepfen oder dergleichen gefaessen
WO1996024524A1 (en) * 1995-02-08 1996-08-15 Olsson Kaj Ove Wrapped pulp bale, method for wrapping a pulp bale and punching device for carrying out the method
EP1010622A1 (de) * 1998-12-16 2000-06-21 Ruggli Projects AG Verfahren zum Verschliessen des einen Endes einer zylindrischen Verpackungshülse, insbesondere einer Tamponverpackung, sowie Vorrichtung hierfür
ITRA20100039A1 (it) * 2010-12-10 2012-06-11 Rev Eng Di Fiumana Roberto Metodo di confezionamento di prodotti con rete tubolare.

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04109009U (ja) * 1991-03-05 1992-09-21 積水化成品工業株式会社 包装装置
US5172537A (en) * 1991-06-27 1992-12-22 Bruno Wetter Bag opening means for bagging machine
JP2521042Y2 (ja) * 1992-04-08 1996-12-25 有限会社コンペックス プラスチックフィルムのヒートシーラー
JP4168947B2 (ja) * 2004-02-13 2008-10-22 マックス株式会社 結束具連結体と結束装置
JP6639861B2 (ja) * 2015-10-13 2020-02-05 福岡丸本株式会社 包装袋の袋口集束封止方法
CN107867425A (zh) * 2017-10-18 2018-04-03 开县郭辉燕柚子种植场 一种包装机
CN108163270A (zh) * 2018-02-01 2018-06-15 绍兴科泰斯纺织品检验有限公司 一种自动化包装机
CN108482751B (zh) * 2018-03-07 2020-09-15 温州市安勋塑料制品有限公司 一种塑料袋的自动包装装置
CN109455339A (zh) * 2018-11-26 2019-03-12 深圳市华南新海传动机械有限公司 包装网袋收拢机构、包装网袋封口装置及农产品包装机
CN110921003B (zh) * 2019-12-18 2023-12-12 天津市旭辉恒远塑料包装股份有限公司 一种编织袋封口按压架
JP7579749B2 (ja) * 2021-05-17 2024-11-08 大倉工業株式会社 包装体
CN118907560B (zh) * 2024-08-20 2025-04-25 辽宁格瑞自动化设备有限公司 一种采用双吊环集装袋的全自动包装线

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL292674A (de) * 1961-10-11 1900-01-01
US3377692A (en) * 1966-10-13 1968-04-16 Rheem Mfg Co Clipping apparatus
AT383324B (de) * 1978-11-15 1987-06-25 Windmoeller & Hoelscher Verfahren und vorrichtung zum verschliessen von grosssaecken
NL170938B (nl) * 1979-01-29 1982-08-16 Moba Holding Barneveld Bv Inrichting voor het sluiten van een gevulde zak.
FR2494216A1 (fr) * 1980-11-14 1982-05-21 Masure Et Fils Et Cie Ets Dispositif de fermeture d'un sachet et sachet obtenu par la mise en oeuvre du dispositif

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8811289U1 (de) * 1988-09-07 1990-01-04 Spang & Brands Maschinenfabrik GmbH & Co, 6382 Friedrichsdorf Schweißverschlußvorrichtung für Kunststoffbeutel
DE4102269A1 (de) * 1989-04-11 1991-08-29 Poly Vac Sa Versiegelungsvorrichtung fuer toepfe, becher und dergleichen gefaesse
DE4102268A1 (de) * 1990-04-27 1991-10-31 Poly Vac Sa Vorrichtung zum versiegeln von toepfen oder dergleichen gefaessen
WO1996024524A1 (en) * 1995-02-08 1996-08-15 Olsson Kaj Ove Wrapped pulp bale, method for wrapping a pulp bale and punching device for carrying out the method
EP1010622A1 (de) * 1998-12-16 2000-06-21 Ruggli Projects AG Verfahren zum Verschliessen des einen Endes einer zylindrischen Verpackungshülse, insbesondere einer Tamponverpackung, sowie Vorrichtung hierfür
ITRA20100039A1 (it) * 2010-12-10 2012-06-11 Rev Eng Di Fiumana Roberto Metodo di confezionamento di prodotti con rete tubolare.
WO2012076195A1 (en) * 2010-12-10 2012-06-14 Rev Packaging Solutions S.R.L. Method and apparatus for packaging products in tubular net

Also Published As

Publication number Publication date
NZ220640A (en) 1989-01-27
AU7570987A (en) 1988-01-28
AU600286B2 (en) 1990-08-09
EP0254541A3 (en) 1989-01-25
DE3784399D1 (de) 1993-04-08
CN87104445A (zh) 1988-02-03
CA1260884A (en) 1989-09-26
EP0254541B1 (de) 1993-03-03
IN169159B (de) 1991-09-07
DE3784399T2 (de) 1993-08-26
ATE86201T1 (de) 1993-03-15
JPS6333228A (ja) 1988-02-12

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