EP0601931A1 - Verfahren und Vorrichtung zur Verpackung mit einem leicht zu öffnende thermoplastischen Film - Google Patents

Verfahren und Vorrichtung zur Verpackung mit einem leicht zu öffnende thermoplastischen Film Download PDF

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Publication number
EP0601931A1
EP0601931A1 EP93402970A EP93402970A EP0601931A1 EP 0601931 A1 EP0601931 A1 EP 0601931A1 EP 93402970 A EP93402970 A EP 93402970A EP 93402970 A EP93402970 A EP 93402970A EP 0601931 A1 EP0601931 A1 EP 0601931A1
Authority
EP
European Patent Office
Prior art keywords
strip
film
batch
heat
packaging
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.)
Ceased
Application number
EP93402970A
Other languages
English (en)
French (fr)
Inventor
Fabrice Lafleur
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.)
Individual
Original Assignee
Individual
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
Priority claimed from FR9314507A external-priority patent/FR2713370B1/fr
Application filed by Individual filed Critical Individual
Publication of EP0601931A1 publication Critical patent/EP0601931A1/de
Ceased 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
    • B65D75/68—Inserted or applied tearing-strings or like flexible elements extending through wrapper closure or between wrapper layers

Definitions

  • the invention relates to packaging / overwrapping with heat-shrinkable plastic film.
  • Heat shrinkable packaging / overwrapping is already known.
  • the heat-shrinkable film is made of plastic, of predetermined width and of chosen length. It can be applied around the lot to be wrapped / overwrapped so as to constitute an open sleeve with two diametrically opposite ends, and intended to be heat-shrunk after constitution.
  • Such a package / overpack has the disadvantage of being difficult to open manually, especially when it is thick.
  • This solution consists in providing in the film at least one zone of greater fragility than the rest of the film and which results from the execution on said film of at least one seam line, with one or more threads.
  • the present invention provides a solution to these drawbacks.
  • the face of the film applied in contact with the strip is less resistant after heat shrinking than said strip insofar as it is less thick.
  • the material constituting the film and the material constituting the strip are substantially identical.
  • the film is polyethylene, polypropylene or even polyvinyl chloride with a thickness of between 20 and 200 micrometers.
  • the material constituting the strip is for example polyethylene, polypropylene or polyvinyl chloride with a thickness greater than that of the film in a ratio of the order of 10.
  • the invention also relates to a method for facilitating the opening of a packaging / overwrapping with heat-shrinkable plastic film for batch of one or more objects.
  • a strip is juxtaposed on a predetermined side of the batch before the film is applied around the batch, with at least one end of the strip projecting from said film, the strip being of generally flat rectangular shape , of selected length and width and made of a heat-shrinkable material having a thickness substantially greater than that of said film, and the face of the film applied in thermal contact with the strip is thermally fused with said strip by application of heat.
  • the strip is unwound from a reel, the strip is cut to the chosen length, and the strip thus cut is juxtaposed on a predetermined side of the batch before the film is placed around said batch.
  • the invention also relates to a machine for wrapping / overwrapping a batch of one or more objects comprising a conventional wrapping machine with or without welding.
  • the machine further comprises barcode scrambling means disposed at the outlet of the heat application means and suitable for scrambling the barcodes of each object of the batch thus wrapped / overwrapped.
  • an overpack bearing the reference SR envelops a lot LT of six articles such as container boxes, identified in B1 to B6, grouped together and arranged to form a substantially parallelepipedic assembly.
  • SR packaging / overwrapping is made from a heat shrinkable film FT of plastic material, applied around the lot LT to be wrapped / overwrapped so as to constitute an open sleeve with two diametrically opposite ends EX1, EX2, and intended to be heat shrunk after incorporation.
  • the sleeve is formed, heat-shrunk and open at the ends EX1 and EX2.
  • This strip BA is juxtaposed on a predetermined side of the batch LT before the application of the film SR, with at least one end EXB projecting with respect to said film SR at one of the ends EX1, EX2 of the sleeve.
  • the face of the film SR applied in contact with the strip BA is capable of thermally fusing with the strip by application of heat, which allows the heat-shrunk sleeve to be easily torn along the strip by pulling on the free end EXB of said strip ( Figure 2).
  • part of the film SR is removed from the batch after being torn along the strip BA.
  • the strip BA can project relative to the film SR at each end EX1 and EX2 of the sleeve.
  • the invention provides for associating with a conventional wrapping machine, means allowing the strip to be produced and its juxtaposition before the application of the movie.
  • the first type is the so-called seamless wrapping machine ( Figure 4).
  • This wrapping machine comprises a reel BB1 around which is wound a heat shrinkable film FT having a predetermined width.
  • Transport means MT1 make it possible to transport the film FT to a wrapping station PB.
  • These means MT1 consist for example of a closed circuit belt driven by rollers.
  • Lot LT is made up of objects stored and grouped together in the form of a substantially parallelepipedic assembly, for example.
  • the supply means AM transport the lot LT to the wrapping station PB using an upstream conveyor CAM.
  • the wrapping station PB comprises means of transport formed by a section TR.
  • a downstream conveyor CAV is provided for evacuating the overpacked batch from the wrapping station towards heat application means CHA to heat shrink the film thus placed around the batch.
  • the introduction means is capable of introducing the film FT at the distance E formed between the upstream conveyor CAM and the section TR.
  • one end of the EFT film is placed under the LT batch, and the end of the EFT film is placed between the underside FILT of the batch and the plane P (FIG. 5A ).
  • a gripping means PR which after total engagement of the batch LT on the section TR grasps the film FT from below (FIG. 5B) and, passing through the spacing E between the upstream conveyor CAM and the section TR, moves it upwards behind said batch, then downstream, passing above the batch (FIG. 5C), to then bring the still free end of the FEFT film in front of the batch to a level at least slightly lower than that defined by the plane P ( Figure 5D), thus accomplishing a trajectory T in which the section TR supporting the lot LT fits in overall.
  • the lot LT is therefore surrounded by the FT film, the length of which is intended to be sufficient for the partial covering of the ends of said EFT and FEFT film.
  • a means of moving the batch from the section TR towards the downstream conveyor CAV displaces the batch so that at first the external face of the film presses on the rear edge of the downstream conveyor CAV, then by progression of the batch, the end of the FEFT film which is still free slides under the lower end of the batch.
  • an auxiliary coil BB2 is provided around which is wound a strip BA of generally flat rectangular shape made of a heat-shrinkable plastic material.
  • the coil BB2 is supported by a frame (not shown) arranged near the wrapping station.
  • the strip BA has a predetermined width. Very advantageously, it has a thickness substantially greater than that of the FT film.
  • the strip BA cut to a chosen length, is juxtaposed on a predetermined side LLT of the batch LT before the application of the film FT around the batch with at least one end EXB of the strip projecting from said film .
  • the means making it possible to juxtapose the strip in this way include, for example, guide means MT2 suitable for bringing the strip, cut to the chosen length, close to one side LLT of the lot LT so that the strip BA thus cut s extends longitudinally along said LLT side with an EXB end projecting from the film.
  • the strip BA is placed near the LLT side of the lot LT before the gripping means PR grips the film FT from below (FIG. 5A).
  • the gripping means PR moves the film FT upwards, behind said batch, then completes the trajectory T mentioned above.
  • the strip BA remains pressed against the predetermined side LLT of the batch, the strip being sandwiched between the film and the batch.
  • the batch is sent to the heat application means CHA to heat shrink the film.
  • the face of the film applied in contact with the strip then thermally fuses with said strip.
  • the machine is said to be seamless because the film is self-sealed during its passage through the CHA shrink tunnel arranged at the outlet of the wrapping station.
  • juxtaposition of the strip, before the film is placed around the batch is an operation which is carried out without difficulty before the wrapping operation proper and whose implementation requires simple means and easy to use.
  • This kind of machine comprises two identical cylindrical coils BO1 and BO2 around which a film FT1 and FT2 are wound respectively.
  • the height of said coils extends on a horizontal plane with the coil BO1 surmounting the coil BO2.
  • First guide means MG1 based on rollers convey the film FT1 downwards, while second guide means MG2 convey the film FT2 upwards until it joins the film FT1.
  • the two films are linked, at a point SOU1, to each other by means of heat welding means (not shown).
  • the films FT1 and FT2 thus form a barrier BAR that is substantially stretched and extending in a vertical plane.
  • the batch to be overpacked LT formed of stored and grouped objects, is brought by a conveyor belt TP opposite the barrier BAR on a horizontal plane interposed between the coils BO1 and BO2.
  • a pusher member driven by a pneumatic cylinder VER1 pushes in a substantially horizontal direction the batch to be overwrapped in the barrier BAR (FIG. 6).
  • the pusher member VER1 has returned to its initial position while the batch, in response to the thrust, is engaged in the barrier so that the films FT1 and FT2 in contact with said batch conform to the shape of the lot until partially wrapped.
  • welding means such as a guillotine with translation in the vertical plane, weld the films FT1 and FT2 at a predetermined point SOU2 so that the batch LT is completely enveloped by the film heat shrink.
  • the guillotine comprises at its free end a cutting part and a heating part arranged close to the cutting part.
  • the heating part ensures the fusion of the FT2 and FT1 films, while the cutting part ensures the separation of the FT2 and FT1 films at the welding point SOU2.
  • the container means of the strip comprise a cylindrical coil BO3 around which a strip BA is wound in the form of a roll.
  • the coil BO3 is fixed to a chassis ASS mounted on the horizontal plane intermediate between the coil B01 and the coil B02 ( Figure 10).
  • the BA strip is unwound using a transfer member driven by a VER2 cylinder.
  • the transfer member comprises for example PT clamps actuated by the cylinder VER2 and suitable for gripping the end of the band EXBA.
  • PT clamps are movable in translation along a horizontal plane to unwind the strip to the chosen length.
  • DEC cutting means for example hot, cut the strip to the length thus determined.
  • the strip is juxtaposed near the batch to be overwrapped.
  • the means for feeding or juxtaposing the strip comprise suction cups VT suitable for gripping the strip cut to the chosen length, and movable in rotation relative to a horizontal axis AXH to transport the strip close to the batch and to release the strip thus transported at a chosen time of the packaging / overpacking of the batch.
  • the suction cups VT are driven by a cylinder VER3 which actuates a support in the form of an arm at the end of which the suction cups VT are arranged to bring the strip BA close to the batch.
  • the feed or juxtaposition member VT of the strip is shown in the strip gripping position, while in dashed lines, the feed member VT is shown in the position in which the strip is close to the batch to be overwrapped.
  • the supply means VT release the strip BA so that it takes place near the lot, on the side not wrapped by the FT1 and FT2 films.
  • the welding means MSOU weld the films FT2 and FT1 as described with reference to FIG. 8, so that the strip BA is sandwiched between the batch and the films thus welded.
  • the supply means VT release the strip BA so that it takes place near the lot, on the side that will enter the BAR barrier.
  • FIG. 8 a batch LT has been shown entirely enveloped by the films FT1 and FT2, and a strip BA placed as described with reference to FIGS. 1 to 3 with one end projecting from the films.
  • the material constituting the film and the material constituting the strip are substantially identical.
  • the film is polyethylene, polypropylene or polyvinyl chloride with a thickness of between 20 and 200 micrometers.
  • the material constituting the strip it is for example polyethylene, polypropylene or polyvinyl chloride with a thickness greater than that of the film in a ratio of the order of 10.
  • the articles to be overwrapped have individual bar codes, it may be advantageous, especially when said objects are arranged and grouped to form a batch, that this batch also has a bar code for all of the articles thus formed.
  • the batch thus formed therefore includes a bar code associated with said assembly.
  • a bar code associated with said assembly Unfortunately, when reading it is difficult to dissociate the bar codes associated with each article and that associated with the set. This results in reading errors when the batch passes in front of the scanners.
  • the Applicant has posed the problem of remedying these reading errors.
  • the scrambling means comprise for example coding means which ink the bar codes after shrinkage of the overwrap film.
  • the batch when the batch is installed on the downstream conveyor, the batch itself drives the coding means which, for example, deposit two black rectangles on a few bars of the code of each article, which prevents any reading of the latter.
  • the coding means include a drum and a cold ink transfer ink head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Basic Packing Technique (AREA)
EP93402970A 1992-12-11 1993-12-09 Verfahren und Vorrichtung zur Verpackung mit einem leicht zu öffnende thermoplastischen Film Ceased EP0601931A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9214959A FR2699149B1 (fr) 1992-12-11 1992-12-11 Dispositif d'emballage a film thermoretractable a ouverture facile, procede pour fabriquer un tel dispositif et machine permettant de mettre en oeuvre un tel procede.
FR9214959 1992-12-11
FR9314507A FR2713370B1 (fr) 1993-12-03 1993-12-03 Procédé de brouillage des codes à barres des emballages unitaires regroupés en lot sous film plastique transparent.
FR9314507 1993-12-03

Publications (1)

Publication Number Publication Date
EP0601931A1 true EP0601931A1 (de) 1994-06-15

Family

ID=9436489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402970A Ceased EP0601931A1 (de) 1992-12-11 1993-12-09 Verfahren und Vorrichtung zur Verpackung mit einem leicht zu öffnende thermoplastischen Film

Country Status (2)

Country Link
EP (1) EP0601931A1 (de)
FR (1) FR2699149B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2128218A1 (es) * 1994-12-07 1999-05-01 Grace W R & Co Metodo para obtener un envase de facil abertura y el envase fabricado con el mismo.
US10294002B2 (en) 2015-01-28 2019-05-21 Kimberly-Clark Worldwide, Inc. Easy open package

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1937556B1 (de) * 2005-09-16 2010-04-21 Skanem UK Limited Verfahren und vorrichtung zum anbringen einer hülse an einem artikel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013368A (en) * 1957-12-16 1961-12-19 Cons Lithographing Corp Wrapping and tear banding machine
GB1162258A (en) * 1966-11-23 1969-08-20 Reed Paper Group Ltd Improvements relating to the Packaging of Articles
FR2115920A5 (en) * 1970-11-23 1972-07-07 Unilever Nv Heat shrunk plastic package - with tear strip
FR2404564A1 (fr) * 1977-10-03 1979-04-27 Paul Freres Et Ronnet Procede d'emballage sous pellicule thermoplastique retractable et machine pour la mise en oeuvre
FR2640951A1 (de) * 1988-12-27 1990-06-29 Evian Eaux Min
FR2666568A1 (fr) * 1990-09-10 1992-03-13 Kaysersberg Sa Ensemble de produits finis empiles sur une palette et procede pour realiser un tel ensemble.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013368A (en) * 1957-12-16 1961-12-19 Cons Lithographing Corp Wrapping and tear banding machine
GB1162258A (en) * 1966-11-23 1969-08-20 Reed Paper Group Ltd Improvements relating to the Packaging of Articles
FR2115920A5 (en) * 1970-11-23 1972-07-07 Unilever Nv Heat shrunk plastic package - with tear strip
FR2404564A1 (fr) * 1977-10-03 1979-04-27 Paul Freres Et Ronnet Procede d'emballage sous pellicule thermoplastique retractable et machine pour la mise en oeuvre
FR2640951A1 (de) * 1988-12-27 1990-06-29 Evian Eaux Min
FR2666568A1 (fr) * 1990-09-10 1992-03-13 Kaysersberg Sa Ensemble de produits finis empiles sur une palette et procede pour realiser un tel ensemble.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2128218A1 (es) * 1994-12-07 1999-05-01 Grace W R & Co Metodo para obtener un envase de facil abertura y el envase fabricado con el mismo.
US10294002B2 (en) 2015-01-28 2019-05-21 Kimberly-Clark Worldwide, Inc. Easy open package

Also Published As

Publication number Publication date
FR2699149B1 (fr) 1995-11-17
FR2699149A1 (fr) 1994-06-17

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