EP0142904A2 - Procédé et dispositif pour envelopper des articles - Google Patents

Procédé et dispositif pour envelopper des articles Download PDF

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Publication number
EP0142904A2
EP0142904A2 EP84201704A EP84201704A EP0142904A2 EP 0142904 A2 EP0142904 A2 EP 0142904A2 EP 84201704 A EP84201704 A EP 84201704A EP 84201704 A EP84201704 A EP 84201704A EP 0142904 A2 EP0142904 A2 EP 0142904A2
Authority
EP
European Patent Office
Prior art keywords
tube
cross
sealing
tear
articles
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Withdrawn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
EP84201704A
Other languages
German (de)
English (en)
Other versions
EP0142904A3 (en
Inventor
Antonius Petrus Staats
Cornelis Theodorus Johannes Janson
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.)
Sbk SA
Original Assignee
Sbk SA
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 Sbk SA filed Critical Sbk SA
Publication of EP0142904A2 publication Critical patent/EP0142904A2/fr
Publication of EP0142904A3 publication Critical patent/EP0142904A3/en
Withdrawn legal-status Critical Current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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/182—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying tear-strips or tear-tapes
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements

Definitions

  • the invention relates to a method of wrap packaging of an article, comprising the steps of adhering a tear tape onto a wrap film web, making cuts in the tear tape area of said film so as to form at least one tear tab, folding the film web into a tube around the article to be wrapped, closing said tube in the longitudinal direction by connecting the longitudinal edges of said tube one to another and closing the tube ends by flat sqeezing and cross-sealing the tube end portions.
  • the invention aims at improving the well-known method so as to become suitable for wrap packaging of the articles of all kinds, including products which require to be wrapped in an air-tight manner.
  • the improvement according to the present invention consists therein that the tab forming cuts are made in a location such that the tear tab falls within a cross-sealing area, the cross-sealing procedure being performed in such a way, that the tear tab is kept loose from the underlying tube wall portion in said area.
  • an air-tight wrapper is obtained while the tear tab facilities are not affected in comparison with a wrapper obtained by the well-known method above referred to.
  • the invention also relates to a device for conducting the method according to the invention, comprising conveyor means for feeding a flow of articles in longitudinally spaced relationship towards a folding station located in the travelling path of the articles, first and second means for supplying a wrap film web and a tear tape respectively towards an intermediary station, means in said station for adhering said web and said tape one to another, cutting means in said station located downstream of said adhering means adapted for making tear tab forming cuts in the tear tape area of said web at intervals corresponding to the interspacing of the articles on said conveyor means, guide means for supplying the composite wrap film web from said intermediary station towards said folding station, the latter comprising means adapted to fold the web into a tube around the articles, means for longitudinally closing said tube by connecting the longitudinal edges of the tube one to another and means for cross-sealing the tube in the areas between successive articles, the improvement consisting therein, that said cutting means are controlled in such timed relationship with said conveyor means and cross-sealing means, that the tear tabs formed are falling within
  • the invention also relates to a wrapped package, comprising a tube of a flexible thermo-plastic material, more particularly a heat sealable material, folded around an article and longitudinally closed by sealing the longitudinal edges of the tube one to another, the terminal end portions of said tube being sqeezed flat and cross-sealed, a tear tape extending longitudinally of said tube, while in at least one of the cross-sealed areas a pair of cuts are made along the longitudinally edges of the tear tape, so as to form a tear tab extending loosely from said cross-sealed area.
  • the device shown in Fig. 1 is designed for wrap packaging of a continuous flow of articles 3, such as packages of thin products, e.g. wafers and similar bakery products.
  • Fig. 1 of the drawings 1 designates a wheeled ; frame carrying an oblong supporting plate for the articles 3 to be wrapped.
  • the device further comprises a station 4 for the supply of the wrapping film web 5 and a folding station 6.
  • the wrap film web 5 supplied from the station 4 towards the folding station 6 is a composite of a plain film web 5' paying off from a reel 14 and a tear tape 5" paying off from a reel 15.
  • the web 5' which may e.g. consist of a heat sealable plastic, and the tear tape 5" are each guided to pass over and under a series of guide rollers towards an intermediary station 4a at which the web 5' and tape 5" are adhered one to another e.g. by supplying heat in the area indicated at x.
  • the composite wrap film web 5 then passes through a punch cutting station 4b, in which U-shaped cuttings are made into the web 5 at intervals which correspond to the distances between the individual articles 3 and such that the "legs" of the U-shaped cuttings each extend along an edge of the tear tape 5".
  • Said cuttings are made by means of a punch roller 16 which is driven in the arrow direction by means not shown in the drawing and which carries three uniformly and circumferentially spaced punches.
  • the punch roller 16 cooperates with a backing roller 17, which is spring-mounted on the other side of the travelling path of the web 5.
  • the composite web 5 leaving the punch cutting station 4b and entering the station 4 for further transportation towards the folding station 6 is provided with a continuous series of uniformly spaced tear tabs.
  • the articles 3 which are deposited on the left hand end of the supporting plate 2 are fed along the latter in mutually spaced relationship towards the folding station 6 by means of an endless conveyor 7 mounted under the plate 2 and adapted to be driven, by means not shown in the drawing, in the arrow direction-
  • the conveyor 7 carries a plurality of serially arranged pusher members adapted to extend from the upper run of the conveyor upwardly through a longitudinal slot in said plate 2 and to engage the trailing end of an article 3.
  • the wrap film web 5 supplied from the station 4 is formed within the folding station 6 into a tube or wrapper .10 which encases the articles 3. Said wrapper is then longitudinally closed around said articles by means of sealing rollers 9 arranged in pairs of cooperating rollers on either side of the longitudinal closure seam and having their axes of rotation positioned in a vertical plane and perpendicular to the axis of the wrapper.
  • the longitudinal edges of the web 5 are gripped by and pressed together between the cooperating sealing rollers, while being sealed under supply of heat.
  • the sealing rollers 9 simultaneously function as transport rollers for the web 5 and the wrapper formed therefrom.
  • the wrapper or tube 10 emanating from the right hand end of the station 6 is then cross-sealed in the zones between the articles encased by the wrapper 3.
  • Said cross-sealing procedure is effected by means of a pair of cross-sealing jaws 11, comprising an upper and a lower jaw lla and 11b respectively.
  • the sealing jaws lla and 11b are driven in opposite directions about axes 13 and in such timed relationship with the travelling speed of the wrapper 10 that said jaws will periodically meet in the intermediary spaces between successive articles 3 so as to sqeeze and cross-seal the superimposed wall portions of the wrapper 10 in said intermediary spaces.
  • the punch roller 16 is driven in such timed relationship with the cross-sealing jaws lla, lib, that the tear tabs 19 fall within the cross-sealing areas between the successive articles.
  • the upper jaw lla has been recessed at 18, i.e. at the location where the tabs 19 get successively between the cooperating jaw surfaces. Due to the recess 18 there will be no heating of the material of the tabs 19, so that they will remain freely projecting.from the plane of the respective cross-sealed areas.
  • the sealing jaws 11a, 11b are further provided with cooperating cutting blades 12 extending transverse to the travelling direction of the articles, and adapted to sever the cross-sealed wrapper into individual wrapped packages 3a.
  • the recess 18 is provided on the right hand side of the cutter blades 12 (see Fig. 1 and 2) so that a tab 19 is formed in the upstream cross-sealed end portion of each wrapped package 3a.
  • the recess 18 might extend on both sides of the cutting blades 12. In that case it would be enough for the punch roller 16 to make two parallel cuttings instead of a U-shaped cutting in each intermediary space or in alternating intermediary spaces between the successive articles. The severing action of the blades 12 would then simultaneously result in forming two adjacent tear tabs, viz. one tab in the upstream cross-sealed end of the package 3a just severed from the wrapper and a second tab in the downstream cross-sealed end portion of the following package 3a to be severed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP84201704A 1983-11-22 1984-11-22 A method and device for wrap packaging of articles Withdrawn EP0142904A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8304020A NL8304020A (nl) 1983-11-22 1983-11-22 Werkwijze en inrichting voor het verpakken van een voorwerp.

Publications (2)

Publication Number Publication Date
EP0142904A2 true EP0142904A2 (fr) 1985-05-29
EP0142904A3 EP0142904A3 (en) 1985-07-10

Family

ID=19842758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84201704A Withdrawn EP0142904A3 (en) 1983-11-22 1984-11-22 A method and device for wrap packaging of articles

Country Status (2)

Country Link
EP (1) EP0142904A3 (fr)
NL (1) NL8304020A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490822A1 (fr) * 1990-12-10 1992-06-17 SIG Schweizerische Industrie-Gesellschaft Emballage en forme de sac tubulaire avec assistance au déchirage
WO1994010042A1 (fr) * 1992-10-29 1994-05-11 Carrs Paper Limited Emballage d'articles allonges
US5452564A (en) * 1991-04-12 1995-09-26 Staats; Antonius P. Method of assembly for a wrapper-stabilized packaging tray folded from a blank of paper-like material and package tray
US6228458B1 (en) 1995-09-28 2001-05-08 P. P. Payne Limited Package with tear tape and method of forming same
CN103010502A (zh) * 2012-12-05 2013-04-03 青岛松本包装机械有限公司 全自动往复式横封包装机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2334381A (en) * 1940-02-20 1943-11-16 Wilhelm B Bronander Method of making tear strip wrappers
US4203270A (en) * 1978-05-19 1980-05-20 Harold Forman High speed tear tape applicator for shrink wrap film packaging

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2334381A (en) * 1940-02-20 1943-11-16 Wilhelm B Bronander Method of making tear strip wrappers
US4203270A (en) * 1978-05-19 1980-05-20 Harold Forman High speed tear tape applicator for shrink wrap film packaging

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490822A1 (fr) * 1990-12-10 1992-06-17 SIG Schweizerische Industrie-Gesellschaft Emballage en forme de sac tubulaire avec assistance au déchirage
US5452564A (en) * 1991-04-12 1995-09-26 Staats; Antonius P. Method of assembly for a wrapper-stabilized packaging tray folded from a blank of paper-like material and package tray
WO1994010042A1 (fr) * 1992-10-29 1994-05-11 Carrs Paper Limited Emballage d'articles allonges
US5577366A (en) * 1992-10-29 1996-11-26 Carrs Paper Limited Method of wrapping elongate articles and product made
US6228458B1 (en) 1995-09-28 2001-05-08 P. P. Payne Limited Package with tear tape and method of forming same
CN103010502A (zh) * 2012-12-05 2013-04-03 青岛松本包装机械有限公司 全自动往复式横封包装机
CN103010502B (zh) * 2012-12-05 2014-12-31 青岛松本包装机械有限公司 全自动往复式横封包装机

Also Published As

Publication number Publication date
NL8304020A (nl) 1985-06-17
EP0142904A3 (en) 1985-07-10

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19860111

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Inventor name: JANSON, CORNELIS THEODORUS JOHANNES

Inventor name: STAATS, ANTONIUS PETRUS