EP0266562A1 - Dispositif pour rétrécir des gaines d'emballage - Google Patents

Dispositif pour rétrécir des gaines d'emballage Download PDF

Info

Publication number
EP0266562A1
EP0266562A1 EP87114435A EP87114435A EP0266562A1 EP 0266562 A1 EP0266562 A1 EP 0266562A1 EP 87114435 A EP87114435 A EP 87114435A EP 87114435 A EP87114435 A EP 87114435A EP 0266562 A1 EP0266562 A1 EP 0266562A1
Authority
EP
European Patent Office
Prior art keywords
shrink
shrinking
packaging film
heater
field
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
EP87114435A
Other languages
German (de)
English (en)
Other versions
EP0266562B1 (fr
Inventor
Hans Dentz
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.)
Dentz Verpackungsmaschinen GmbH
Original Assignee
Dentz Verpackungsmaschinen GmbH
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 Dentz Verpackungsmaschinen GmbH filed Critical Dentz Verpackungsmaschinen GmbH
Publication of EP0266562A1 publication Critical patent/EP0266562A1/fr
Application granted granted Critical
Publication of EP0266562B1 publication Critical patent/EP0266562B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat

Definitions

  • the invention relates to a device for shrinking packaging films according to the preamble of patent claim 1.
  • shrinking packaging films in particular on large packaging, such as stacks of goods, which are arranged on standardized pallets, such as wooden pallets, it is known, for example, to provide a horizontally lying frame with shrink heaters distributed over the circumference of the frame and directed into the opening in the frame, and thus to raise this frame in the vertical direction to move the packaging material unit covered with the packaging film so that the latter is located in the frame opening.
  • the packaging film can be a sack or hood-shaped film, which is placed with its hood opening down over the packaging material unit until its hood bottom on the The top and its hood edge extends below the underside of the packaged goods unit, but it can also be, for example, an already stretched and thus elastically tightly wrapped film web or a similar shrinkable wrapping around the packaged goods unit.
  • this known device shrinks the packaging film over the entire horizontal circumference of the packaged goods unit at the same time.
  • this can lead to the fact that the heat rising over the entire circumference of the packaged goods unit from the shrink heaters leads to such a strong shrinking of the film above the underside of the packaged goods unit at the beginning of the shrinking process.
  • the edge of the packaging film intended for gripping the underside of the underside of the packaged goods unit is pulled up over the underside of the packaged goods unit before proper shrinking and thereby forms, for example, moon-like openings in the packaging in the region of the lower edge of the packaged goods unit.
  • the invention has for its object to provide a device of the type mentioned, which ensures such targeted heat application with a simple structure that first the lower edge of the packaging film is securely shrunk under the packaged goods unit without being able to be pulled up.
  • the shrink field determined by the nominal size of the shrink heater extends both with its extension in the circumferential direction of the packaging item only over part of this circumference and with its height extension only over a, preferably larger, fraction of the height of the packaging item, so that at the beginning of Shrinking process first brought only a part of the lower edge of the packaging film into the shrink position and then the remaining part is gradually transferred to the shrink position if necessary.
  • the first-mentioned part can, for example, lie at a corner of the packaged goods unit, that is to say over a corner, and the part of the edge that is subsequently to be transferred into a shrink position can be provided opposite, for example diagonally opposite, on the associated corner.
  • the edge can, however, also be gradually shrunk from one, two or more parts that are shrink-wrapped at the same time or one after the other over the remaining peripheral parts.
  • shrinking properties of the packaging film it is also conceivable to simultaneously shrink the first shrinking process of the lower edge of the packaging film along approximately at least one side, approximately two sides that are mutually opposite or at an angle, or approximately along three sides Make angles of mutually adjacent sides of the packaging material unit, so that the circumferential part of the lower edge of the packaging film which has not yet been recorded is then less than half of the total circumference.
  • a particularly advantageous embodiment of the device results, however, from the embodiment according to claim 2, a shrinking field of approximately 20 cm in the circumferential direction and / or 20 cm in the height direction being particularly expedient.
  • the circumferential extent of the respective shrinking field is expediently at most one tenth, in particular less than one twentieth, preferably at most about thirtieth of this nominal size, while the height of the shrinking field in relation to the associated nominal height of the device is approximately can be of the order of a fifth to a fifteenth, in particular of the order of about a tenth. In any case, the height of the shrinkage field is expediently less than half the height of the packaged goods unit.
  • the procedure according to the invention is such that only the lower edge of the packaging film is shrink-wrapped in a horizontal ring path, after which the peripheral surfaces of the packaged goods unit are shrunk in a helically increasing manner and finally the uppermost part of the packaging film is again in a closed upper ring-shaped end path so-called upper or cover shrink.
  • the respective shrinking field can be determined by a single, but also by two or more separate heating heads directed towards a common shrinking field, each of which, for example, determines a heating field which deviates from the circular shape and is in particular elongated in height, for example flat-oval, and which are aligned directly next to one another that they determine a shrinking field which is about twice as large.
  • the lifting device can be designed in such a way that the device can also be converted at any time into a packaging device for film-wrapped packaging on packaged goods units, such as palletized stacks of goods to be positioned on a shelf.
  • a delivery device for the film web can be attached to the lifting device in addition to the shrink heater or exchangeable against it, this delivery device being assigned to one of two device units rotatable relative to one another with a drive about the winding axis and one arranged on the delivery device for the film web
  • Tensioning device with a retarding element which releases the release of the film can be provided so that the film web running, for example, from a storage roll is wound up with constant elongation.
  • the efficiency and thus the working speed of the device can be significantly increased by the fact that the distance of the shrink heater from the vertical central axis of the packaged goods unit is not fixed, but can be changed so that this distance to different circumferential widths of packaged goods units and possibly can be adapted to the irregular circumferential shape deviating from the cylindrical shape. If the distance of the shrink heater is kept constant over the entire circumference of the packaged goods unit, regardless of this circumferential shape, the field size of the shrinking field is also constant over the circumference of the packaged goods unit.
  • the design of the control device allows the device to be used automatically, regardless of the height of the packaging goods unit.
  • the plate-shaped flat and therefore only slightly protruding from the floor of the building circular turntable 9 can be rotated with a drive about its vertical central axis 10, the packaging unit 3 being expediently arranged on the turntable 9 such that its vertical central axis is aligned with the central axis 10 coincides.
  • a ramp plate that rises flat from the floor level leads to the top of the receiving console 8, so that the packaged goods 3 can be easily moved onto the turntable 9, for example with a lifting truck.
  • a substantially smaller, for example plate-shaped, base pedestal 11, which is so large that the packaged goods 3 have a secure stand on the one hand and, on the other hand, its underside in the edge region at a distance above it, is arranged substantially smaller than the base of the packaged goods 3 or the pallet 5 the top of the turntable 9 is exposed over the entire circumference.
  • the shrink heater 6 has a vertical column 12, which is higher than the highest packaged goods 3 to be processed, and which is equipped with a lifting device, for example a vertical threaded spindle, a cable or chain drive or the like Height slide 14 is provided, which can be moved on the side facing the central axis 10 in a slide guide of the column 12 formed, for example, by a vertical slot.
  • a lifting device for example a vertical threaded spindle, a cable or chain drive or the like
  • Height slide 14 is provided, which can be moved on the side facing the central axis 10 in a slide guide of the column 12 formed, for example, by a vertical slot.
  • the heating head 7 is expediently attached via a ball-and-socket joint in such a way that it has two pivot axes intersecting at right angles, behind its front side or in the transition area in the slide 14, with respect to its horizontally directed towards the packaged goods 3 in the middle position
  • the central axis can be pivoted upwards and downwards and laterally on both sides and can be fixed in the respectively set position, so that it is possible to adjust the angle of attack of the heating head 7 relative to the outer surfaces of the packaged goods unit 3 to the respective requirements.
  • the heating head 7 can be easily detachable or exchangeable against a retrofitting device on the height slide 14, or instead or in addition to this the height slider 14 including the heating head 7 can be easily removed or can be exchanged for the slide of the retrofitting device mentioned on the Carriage of the column 12 may be attached.
  • the distance of the heating head 7 from the central axis 10 can be changed, it being conceivable to mount the heating head 7 adjustable and fixable transversely to the central axis 10 with respect to the height slide 14 or, if necessary, to load it against the central axis 10 with a pressing device such as a spring and with a copying device to keep a constant distance from the packaged goods unit 3.
  • a pressing device such as a spring and with a copying device to keep a constant distance from the packaged goods unit 3.
  • the entire shrink heater 6 or the column 12 is adjustable transversely to the central axis 10.
  • the lower end of the column 12 is arranged on a cross slide 15, which is mounted in a slide guide 16 of the device 1 standing on the floor, displaceable at right angles to the central axis 10 and, if necessary, fixable.
  • the copying device 17 can have, for example, a copying arm 18 projecting from the column 12 or from the height slide 14 in the direction of the central axis 10 or to the packaged goods unit 3, which has a runner, in particular a rolling running member, such as a roller on the outer circumference of the packaged goods unit runs approximately in the axial plane of the central axis 10 that passes through the central axis of the heating head 7.
  • the carriage 15 is resiliently loaded in the direction of the central axis 10 with the mentioned pressing device.
  • an optical scanning device 19 in the form of, for example, a photocell arranged on the height slide 14 is provided, which has an operating and program control device 20 for the device 1 in FIG interacts in a descriptive manner.
  • Thisshrinking field 21 may also be smaller than the heating opening of the heating head 7, but is usually larger, as indicated by dash-dotted lines in FIG.
  • the control device 20 acting on the drive of the turntable 9 and on the lifting device 13 is programmed so that the shrinking field 21 extends at the beginning of the shrinking process to below the underside 29 of the packaged goods unit 3, for example the central axis of the heating opening in a horizontal plane 26 may lie, which is approximately at the level of this underside 29 or only slightly above.
  • the turntable 9 performs at least approximately one full revolution, as a result of which the packaging film 2 is shrunk mainly only in the region of the edge 28, which initially still hangs over the underside 29 of the packaged goods unit 3, such that this edge 28 is under the shrinkage tension strikes horizontally inwards and lies against the underside 29 of the packaged goods unit 3.
  • the shrinking field 21 is moved upwards in relation to the outer circumference of the packaging film 2 in a helical path section 24, the Slope approximately the same as the height of the shrinking field 21 or, on the other hand, depending on the shrinking properties of the packaging film, can be smaller and in some cases slightly larger.
  • the optical scanning device 19 is adjusted so that when it detects the upper end of the packaged goods unit 3, the central axis of the shrinking field 21 coinciding with the central axis of the heating head 7 by stopping the lifting device 13 at an altitude is set, which is approximately at the top of the packaged goods unit 3, preferably slightly above; the height of the corresponding upper plane 27, which is parallel to the plane 26, can be such that its distance is approximately equal to or smaller than the distance of the lower boundary of the shrinking field 21 from its central axis.
  • the shrinking field passes from the helical path section without interruption again into a ring section which is closed at right angles to the central axis 10 and which represents the upper end 25 of the shrink path 22, it also being sufficient in this case if the turntable 9 after reaching it the upper end position by the shrink heater 6 approximately only a single revolution.
  • the edge 28 Since at the beginning of the shrink path 22 essentially only the edge 28 is initially shrunk completely over the circumference of the packaged goods unit 3 on the underside 29 thereof and is therefore also significantly stiffened, namely shrunk, compared to its original stretchability in the non-or only partially shrunk state , and because then the surface shrinkage on the outer circumference of the packaging film 2 only ever takes place over a partial section of the edge 28 that has already been shrunk, there is no risk that the edge 28 can be pulled up again over the underside of the packaged goods unit 3 when the smile shrinks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Package Closures (AREA)
EP19870114435 1986-10-03 1987-10-02 Dispositif pour rétrécir des gaines d'emballage Expired - Lifetime EP0266562B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863633680 DE3633680A1 (de) 1986-10-03 1986-10-03 Vorrichtung zum schrumpfen von verpackungsfolien
DE3633680 1986-10-03

Publications (2)

Publication Number Publication Date
EP0266562A1 true EP0266562A1 (fr) 1988-05-11
EP0266562B1 EP0266562B1 (fr) 1993-04-14

Family

ID=6310967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870114435 Expired - Lifetime EP0266562B1 (fr) 1986-10-03 1987-10-02 Dispositif pour rétrécir des gaines d'emballage

Country Status (2)

Country Link
EP (1) EP0266562B1 (fr)
DE (2) DE3633680A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2723564A1 (fr) * 1994-08-12 1996-02-16 Newtec Int Procede et dispositif de suremballage, par thermo-retraction, d'une charge palettisee
ITMI20090273A1 (it) * 2009-02-26 2010-08-27 Gda S R L Forno di termoretrazione a piattaforma rotante
EP3144231A1 (fr) 2015-09-21 2017-03-22 Schermesser Dispositif, ensemble et méthode d'emballage d'un objet

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932782A1 (de) * 1988-12-16 1990-06-21 Brega Verpackungsmaschinen Anw Vorrichtung zum verpacken von insbesondere palettiertem packgut
DE4318753A1 (de) * 1993-06-05 1994-12-08 Dentz Verpackungsmaschinen Gmb Vorrichtung zum Schrumpfen von Verpackungsfolien an Verpackungsgut-Einheiten
HU230529B1 (hu) 2013-09-12 2016-11-28 Kőröspack Kft. Berendezés egység rakományok burkolására nyújtható fóliával
HU230691B1 (hu) 2013-12-03 2017-09-28 Kőröspack Kft. Eljárás és berendezés tetszőleges alakú és/vagy méretű rakományok burkolására szolgáló fólia mennyiségének szabályozására

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2158936A5 (fr) * 1971-10-25 1973-06-15 Ahrendt & Birkendahl Ohg
US3801268A (en) * 1973-02-16 1974-04-02 D Amo Shrink-wrapping device
FR2565553A1 (fr) * 1984-06-08 1985-12-13 Pakem Machine d'emballage automatique par chauffage d'une gaine thermoretractable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327996A1 (de) * 1983-08-03 1985-02-14 MSK - Verpackungs-Systeme GmbH, 4190 Kleve Verfahren zum verpacken von palettierten gutstapeln und vorrichtung zur durchfuehrung dieses verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2158936A5 (fr) * 1971-10-25 1973-06-15 Ahrendt & Birkendahl Ohg
US3801268A (en) * 1973-02-16 1974-04-02 D Amo Shrink-wrapping device
FR2565553A1 (fr) * 1984-06-08 1985-12-13 Pakem Machine d'emballage automatique par chauffage d'une gaine thermoretractable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2723564A1 (fr) * 1994-08-12 1996-02-16 Newtec Int Procede et dispositif de suremballage, par thermo-retraction, d'une charge palettisee
EP0697337A1 (fr) * 1994-08-12 1996-02-21 Newtec International Procédé et dispositif pour l'emballage extérieur par thermorétraction d'une charge palettisée
US5596866A (en) * 1994-08-12 1997-01-28 Newtec International Method and device for the exterior packaging, by heat-shrinking, of a palletized load
ITMI20090273A1 (it) * 2009-02-26 2010-08-27 Gda S R L Forno di termoretrazione a piattaforma rotante
EP3144231A1 (fr) 2015-09-21 2017-03-22 Schermesser Dispositif, ensemble et méthode d'emballage d'un objet
WO2017050678A1 (fr) 2015-09-21 2017-03-30 Schermesser Dispositif, ensemble et methode d'emballage d'un objet;

Also Published As

Publication number Publication date
DE3785414D1 (de) 1993-05-19
EP0266562B1 (fr) 1993-04-14
DE3633680A1 (de) 1988-04-14

Similar Documents

Publication Publication Date Title
EP0077508B1 (fr) Procédé et dispositif d'emballage de piles d'objets palettisés
DE3634924A1 (de) Verpackungs-vorrichtung fuer folienwickelverpackungen
DE2618583A1 (de) Vorrichtung zum umschnueren von gegenstaenden
EP0266562B1 (fr) Dispositif pour rétrécir des gaines d'emballage
DE4139824C1 (fr)
DE3106845C2 (fr)
EP1147050B1 (fr) Dispositif pour contracter un film thermo-retrecissable
DE3210602A1 (de) Verfahren und vorrichtung zum brechen von ballen aus textilfasern
DE2825800A1 (de) Vorrichtung zum buendeln von im wesentlichen zylindrischen gegenstaenden zu paketen
DE3115911A1 (de) Verfahren und vorrichtung zum aufschrumpfen von plastikfolie auf flachpaletten-ladeeinheiten
EP0378730B1 (fr) Appareil pour emballer des objets avec une bande tubulaire en matière plastique
DE2354405A1 (de) Vorrichtung zur herstellung einer schrumpffolienverpackung auf einer palettenladung
EP0392093A1 (fr) Machine pour envelopper des charges palettisées avec un film
DE8626428U1 (de) Vorrichtung zum Schrumpfen von Verpackungsfolien
EP0460681B1 (fr) Installation pour plier en accordéon et/ou étirer une gaine tubulaire d'emballage étirable
DE19955478B4 (de) Stretch-Wickler
DE3814999A1 (de) Vorrichtung zum tiefziehen von stapelbaren paletten
EP0933297A1 (fr) Procédé et dispositif pour emballer une charge
DE10220803B4 (de) Verfahren zum Umwickeln von auf einem Träger angeordneten Gegenständen
DE4318753A1 (de) Vorrichtung zum Schrumpfen von Verpackungsfolien an Verpackungsgut-Einheiten
DE3236253A1 (de) Verfahren und vorrichtung zum einschrumpfen einer folienumwicklung bei auf paletten befindlichen stueckgutstapeln
EP0191807B1 (fr) Procede et systeme de changement de palettes
DE2852957A1 (de) Vorrichtung zum selbsttaetigen stapeln von werkstuecken
DE2751953A1 (de) Verfahren und vorrichtung zum einbringen gestapelter formteile in einen transportbehaelter
EP3214003A1 (fr) Procede et dispositif de retraction d'une feuille thermoretractable disposee autour d'une pile de marchandises, notamment palettisee

Legal Events

Date Code Title Description
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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19881105

17Q First examination report despatched

Effective date: 19900725

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3785414

Country of ref document: DE

Date of ref document: 19930519

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930607

ET Fr: translation filed
RIN2 Information on inventor provided after grant (corrected)

Free format text: DENTZ, HANS

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930927

Year of fee payment: 7

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19941002

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941002

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20061208

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20061020

Year of fee payment: 20