EP1445197A1 - Vorrichtung und Verfahren zum Umhüllen einer palettisierten Ladung mit einer Heissschrumpffolienhaube - Google Patents

Vorrichtung und Verfahren zum Umhüllen einer palettisierten Ladung mit einer Heissschrumpffolienhaube Download PDF

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Publication number
EP1445197A1
EP1445197A1 EP04354004A EP04354004A EP1445197A1 EP 1445197 A1 EP1445197 A1 EP 1445197A1 EP 04354004 A EP04354004 A EP 04354004A EP 04354004 A EP04354004 A EP 04354004A EP 1445197 A1 EP1445197 A1 EP 1445197A1
Authority
EP
European Patent Office
Prior art keywords
cover
load
heat
packaging
lower edge
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
EP04354004A
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English (en)
French (fr)
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EP1445197B1 (de
Inventor
Jean-Paul Charles Martin Cocher
Georges Jaconelli
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.)
Thimon SAS
Original Assignee
Thimon SAS
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Publication date
Application filed by Thimon SAS filed Critical Thimon SAS
Publication of EP1445197A1 publication Critical patent/EP1445197A1/de
Application granted granted Critical
Publication of EP1445197B1 publication Critical patent/EP1445197B1/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
    • 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
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • B65B53/066—Mobile frames, hoods, posts or the like

Definitions

  • the packaging consists of a multilayer stack of objects or hollow glass or plastic containers, for example bottles.
  • the invention also applies to any other type of object using packaging waterproof and stable heat shrink.
  • the document FR-A-2816587 describes an installation for covering and shrinking, in which the lower edge of the cover is held by the fingers of covering during the whole covering and heat sealing phase.
  • the document EP-A-376028 relates to a packaging device equipped pressing elements with pivoting levers working outside the moving grippers.
  • the bottom edge of the cover is held by the four pivoting levers, on the one hand against stops integral with the support table, and on the other hand on the external faces beams from the pallet.
  • the pivoting levers are rotatably mounted in below the positioning plane, and around horizontal axes integral with Table.
  • a cannula is introduced suction between the bottom edge of the cover and the drooping edges of the format constituting the floor mat, so as to suck the air trapped during the retraction phase.
  • Such a device does not maintain the cover during the retraction.
  • EP 697337 relates to a method and a device for overpacking of a palletized load, comprising a preliminary step of covering the loaded with a shrink film cover, followed by a shrinking step thermal film, implementing the shrinkage of a film return under the face lower of the lateral sliding supports, and a conformation of the cover along the transverse sides to bring the lower edge of the cover substantially on the underside of the load floor palletized.
  • the lower edge of the cover is not separated from the load by mechanical means.
  • Such a device is intended to clear the passage of handling forks in automatic storage stores.
  • Document DE 4426369 mentions a packaging device, in which the film is removed from the load by air, not by spacing means mechanical. We first blow inside to distribute the film around the charge, then internal air is drawn in during retraction. The film is then pressed by the effect of depression against the load, which complicates the evacuation air.
  • the object of the invention is to develop a packaging process intended for improve shrinkage and heat sealing on a sealing format of a shrink film packaging cover placed on a palletized load requiring a perfect seal.
  • the method according to the invention is characterized in that means are placed retained under the lower edge to moderately stretch the cover while holding it by the four angles, and at a predetermined distance from the load, so keep the gap open during the first heat shrink phase, and then remove these retaining means just before the phase of heat sealing the lower edge of the cover on the floor mat.
  • the setting tension of the edge of the cover allows the escape of trapped air to across said gap, and prevents vertical withdrawal of the bottom edge during minus part of the heat shrink phase.
  • the retaining means are first introduced vertically at from a lower level outside the cover to a level higher than the inside of the cover, and said means are then spread horizontally retained around the four corners of the bottom edge to keep the cover open.
  • a gas injection stage can also be planned after the phase suction. It is preferable to use a gas injected inside the space between the cover and the load, so as to sanitize or treat the internal volume of the cover. The final sealing of the cover by heat sealing takes place immediately after this gas injection, so as to prevent any gas escape or air introduction.
  • the invention also relates to an installation for packaging a load.
  • palletized using a shrinkable plastic cover comprising a palletized load support table, means for cover to put the cover open around and on the load, means of heating with retraction frame to heat the cover for its heat shrinkage, and means for retaining the lower edge of the cover during heat shrinkage to allow trapped air to escape between the cover and the load.
  • the retaining means include a mechanism recovery with four movable control fingers intended to move apart for stretch the cover by holding it by the four angles, and at a distance predetermined load during the heat shrinking phase.
  • control fingers are horizontally and vertically movable, being arranged in two housings secured to the two opposite sides of the support table.
  • Each housing contains a pair of control fingers cooperating with drive means to occupy a close position or a moved position.
  • a device suction and supply air is arranged in the support table and under the palette.
  • control fingers can be drilled and connected to a gas injection device to ensure sanitization or any other treatment inside the cover.
  • a CH load consisting of a stack of 10 glass or plastic bottles, is placed on a rectangular pallet 12 with interposition of a floor mat 14 beyond the edges of the pallet 12.
  • the pallet 12 and load CH assembly is brought to a support table 13 by means of a conveyor or a conveyor chains 16, which moves in a perpendicular longitudinal direction in plan of Figures 1 and 2.
  • the upper face 15 of the pallet 12 covered by the floor mat 14 is more as wide as the distance between the two external beams or studs 17 extending parallel to the longitudinal direction.
  • the beams 17 form spacers defining the thickness of the pallet 12.
  • the CH load has a shape parallelepiped comprising a lower horizontal face 19 coming in support on the floor mat 14, an upper horizontal face 27, and four faces lateral verticals 28.
  • a cover 18 is made from a tubular sheath of material film heat-shrinkable plastic, in particular polyethylene, said sheath being previously cut and then welded transversely to form a roof. The cover 18 is then opened by its lower end facing downwards, then it is threaded on the palletized CH load during a first step of hooding. The upper face 27 of the load CH is thus completely capped by the cover 18.
  • the device for shaping the cover 18 and of the CH load cover is described in detail in document EP 1060988.
  • the floor mat 14 is formed by a format made from a film of material heat-shrinkable plastic, the outer edges of which fall on the sides sides of the pallet 12.
  • the material constituting the floor mat 14 can be same as that of the cover 18. In the cover position, the lower edge 29 of the cover 18 is arranged around the falling edges of the floor mat 14.
  • a fan 21 is placed under the pallet 12 inside the support table 13, and is driven by an electric motor 22 reversing the direction of rotation to constitute a device for extracting or blowing air inside the cover 18.
  • a heating device constituted, for example, by a retraction frame 20, is arranged with play around the load CH coated with its cover 18.
  • the retraction frame 20 is vertically movable (arrow F1) by means drive (not shown) to heat the side surface of the cover 18 from top to bottom during the film retraction phase on the CH load.
  • the installation can include either a single station allowing the combination of covering and shrinking phases, i.e. two separate separate positions, the first upstream for the fitting of the cover 18, and the second downstream for heating.
  • Retaining means located under the upper face 15 of the pallet 12 are made active during the retraction phase to spread the open bottom edge 29 of the cover 18 with respect to the load CH and the pallet 18 while allowing to remain an interval 24 ( Figure 2).
  • the air trapped inside the cover 18 can thus naturally escape through this interval 24 during the phase of retraction as the lowering movement of the heating frame 20 proceeds.
  • the natural peripheral air exhaust can be supplemented by a additional flow generated by a suction effect during commissioning of fan 21. This power-up at the four corners prevents any vertical withdrawal of the lower edge during at least part of the shrinking.
  • the retaining means comprise a recovery mechanism 23 intended to ensure the conformation and the holding of the lower edge 29 of the cover 18 during the entire retraction phase.
  • the recovery mechanism 23 is equipped for this purpose with four horizontally movable control fingers 26 and vertically, so as to reposition and moderately tension the cover 18 holding the lower edge 29 by the four angles, and at a distance predetermined sides of the CH load and the pallet 12.
  • the mechanism recovery 23 is arranged in two housings 30 integral on both sides opposite of the support table 13.
  • Each casing 30 contains a pair of fingers 26 capable of occupying a close position (half view on the left, figures 3 and 4), or a spread position (half-view on the right, figures 3 and 4).
  • the control fingers 26 of each pair are initially found in a close position (see half-view on the left, Figure 1), but at a lower level located under the pallet 12.
  • the frame 20 of heating is placed in the high position, at the top of the load CH, but is not yet activated to ensure retraction.
  • Fan 21 can be actuated to cause an air supply intended to draw the lower edge away 29 of the pallet 12 in the insertion zone 31 of the control fingers 26.
  • control fingers 26 are then moved vertically towards the level upper (half-view on the right, figure 1), so as to insert them in the zone 31 between the pallet 12 and the lower edge 29 of the cover 18. During this placing in place, the control fingers 26 remain in the close position.
  • Drive means 32 of the recovery mechanism 23 move by the following the control fingers 26 horizontally towards the separated position (half-view on the right, Figures 2 and 3 and 4) maintaining the lower edge 29 of the cover at the four corners with formation of the gap 24 open to the outside. A blowing of air can then cause a slight inflation of the cover 18 to avoid any creases during the next phase of retraction.
  • the drive means 32 of the fingers 26 of the recovery mechanism 23, for example include a device for belt drive 33 driven by a geared motor 34, and driving each finger support 26 along an inclined or curvilinear ramp 35.
  • the end positions of each ramp 35 correspond to the positions close and apart from the fingers 26.
  • the retraction frame 20 heats the side faces of the cover 18 after moving up and down bottom (arrow F1, figure 2).
  • the air trapped between the load CH and the cover 18 is sucked in by fan 21 rotating in the opposite direction, and is driven towards outside through gap 24. Air is drawn in throughout lowering stroke of the retraction frame 20, so as to completely empty the cover 18.
  • control fingers 26 hollow, laterally pierced with orifices in the part contact with the film. Maintaining suction inside the fingers of command 26 during the retraction phase removes this disadvantage. At the end of retraction, the suction is removed so as to facilitate release of the cover 18.
  • the pierced control fingers 26 can be connected to a gas injection device (not shown) to ensure asepticization or any other treatment inside the cover 18.
  • a gas injection device not shown
  • the suction by the fan 21 remains maintained, so as to press the cover against the floor mat 14, and make it waterproof the interval 24 between the load CH and the edge of the cover 18.
  • each of the two mechanisms 123 lateral recovery is equipped with a pair of levers 36 for actuating the fingers 26.
  • Each lever 36 is pivotally mounted on an axis 37 between two angular positions, one of which allows the cover 18 to be held in the spread position (see position C in figure 6).
  • Each lever 36 is associated with a tension spring 38 urging the fingers 26 in the close position (see position A in figure 5).
  • An actuating jack 39 actuates each lever 36 to move it horizontally to an angle of the load CH when the fingers are apart 26. From the close position A of FIG. 5, the fingers 26 are first moved in translation to the intermediate position B of Figure 6 without deviate from the CH load. In this intermediate position, the springs 38 of the levers 36 remain relaxed as in FIG. 5. The continued stroke of the jacks 39 then causes opposite tilting movements of the levers 36 to the position separated from the fingers 26 (see position C, Figure 6). Springs 38 of traction are then tensioned, and automatically return to position close at the end of the retraction phase when the cylinders are recalled 39. The fingers 26 are then released downwards by a vertical displacement of the recovery mechanism 123 or by pivoting around the controlled axis 39 by a pneumatic cylinder 40.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Packages (AREA)
EP20040354004 2003-02-10 2004-02-02 Vorrichtung und Verfahren zum Umhüllen einer palettisierten Ladung mit einer Heissschrumpffolienhaube Expired - Lifetime EP1445197B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0301532 2003-02-10
FR0301532A FR2850949B1 (fr) 2003-02-10 2003-02-10 Dispositif et procede d'emballage d'une charge palettisee au moyen d'une housse a film en matiere plastique thermoretractable

Publications (2)

Publication Number Publication Date
EP1445197A1 true EP1445197A1 (de) 2004-08-11
EP1445197B1 EP1445197B1 (de) 2007-06-20

Family

ID=32606028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040354004 Expired - Lifetime EP1445197B1 (de) 2003-02-10 2004-02-02 Vorrichtung und Verfahren zum Umhüllen einer palettisierten Ladung mit einer Heissschrumpffolienhaube

Country Status (5)

Country Link
EP (1) EP1445197B1 (de)
DE (1) DE602004007049T2 (de)
DK (1) DK1445197T3 (de)
ES (1) ES2289462T3 (de)
FR (1) FR2850949B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017108965A3 (de) * 2015-12-22 2017-08-17 Gebr. Heinemann SE & Co. KG Verfahren und vorrichtung zur manipulationssicheren versieglung von packgut
RU197563U1 (ru) * 2020-01-31 2020-05-13 Закрытое акционерное общество "Стеклопак" Механизм сварки пленочной оболочки для упаковки штабеля предметов на поддоне

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2499665T3 (es) * 2010-09-27 2014-09-29 Felix Waldner Gmbh Procedimiento para el embalaje de un producto a embalar y embalaje para un producto a embalar

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205135A1 (de) 1985-06-14 1986-12-17 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Verfahren zum Verpacken eines auf einer Palette angeordneten Gutstapels und Vorrichtung zur Durchführung des Verfahrens
EP0249534A1 (de) 1986-06-04 1987-12-16 Newtec International Verfahren und Vorrichtung zum Verpacken einer Palettenladung in eine Hülle aus wärmeschrumpffähiger Kunststoffolie
EP0376028A1 (de) 1988-12-24 1990-07-04 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Vorrichtung zum Verpacken eines auf einer Palette angeordneten Gutstapels
DE4426369C1 (de) 1994-07-26 1995-08-17 Moellers Maschf Gmbh Verfahren zum Verpacken eines Gutstapels mit einer Schrumpffolienhaube
EP0697337A1 (de) 1994-08-12 1996-02-21 Newtec International Verfahren und Vorrichtung für die äussere Verpackung einer palettisierten Ladung durch Wärmeschrumpfen
FR2816587A1 (fr) 2000-11-16 2002-05-17 Thimon Procede et dispositif de houssage et de thermoscellage d'une housse en matiere plastique thermoretractable pour constituer un emballage etanche sur une charge palettisee

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205135A1 (de) 1985-06-14 1986-12-17 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Verfahren zum Verpacken eines auf einer Palette angeordneten Gutstapels und Vorrichtung zur Durchführung des Verfahrens
EP0249534A1 (de) 1986-06-04 1987-12-16 Newtec International Verfahren und Vorrichtung zum Verpacken einer Palettenladung in eine Hülle aus wärmeschrumpffähiger Kunststoffolie
EP0376028A1 (de) 1988-12-24 1990-07-04 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Vorrichtung zum Verpacken eines auf einer Palette angeordneten Gutstapels
DE4426369C1 (de) 1994-07-26 1995-08-17 Moellers Maschf Gmbh Verfahren zum Verpacken eines Gutstapels mit einer Schrumpffolienhaube
EP0697337A1 (de) 1994-08-12 1996-02-21 Newtec International Verfahren und Vorrichtung für die äussere Verpackung einer palettisierten Ladung durch Wärmeschrumpfen
FR2816587A1 (fr) 2000-11-16 2002-05-17 Thimon Procede et dispositif de houssage et de thermoscellage d'une housse en matiere plastique thermoretractable pour constituer un emballage etanche sur une charge palettisee

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017108965A3 (de) * 2015-12-22 2017-08-17 Gebr. Heinemann SE & Co. KG Verfahren und vorrichtung zur manipulationssicheren versieglung von packgut
EP3733534A3 (de) * 2015-12-22 2021-01-13 Gebr. Heinemann SE & Co. KG Verfahren zur manipulationssicheren versieglung von packgut
RU197563U1 (ru) * 2020-01-31 2020-05-13 Закрытое акционерное общество "Стеклопак" Механизм сварки пленочной оболочки для упаковки штабеля предметов на поддоне

Also Published As

Publication number Publication date
DE602004007049D1 (de) 2007-08-02
ES2289462T3 (es) 2008-02-01
FR2850949A1 (fr) 2004-08-13
EP1445197B1 (de) 2007-06-20
DK1445197T3 (da) 2007-10-22
FR2850949B1 (fr) 2005-10-21
DE602004007049T2 (de) 2008-02-28

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