EP1147050A1 - Device for shrinking a shrink-wrap film - Google Patents
Device for shrinking a shrink-wrap filmInfo
- Publication number
- EP1147050A1 EP1147050A1 EP00907478A EP00907478A EP1147050A1 EP 1147050 A1 EP1147050 A1 EP 1147050A1 EP 00907478 A EP00907478 A EP 00907478A EP 00907478 A EP00907478 A EP 00907478A EP 1147050 A1 EP1147050 A1 EP 1147050A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- goods
- stack
- shrinking
- nozzle
- shrink
- 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
Links
- 229920006300 shrink film Polymers 0.000 claims description 40
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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 invention relates to a device for shrinking a heat shrink film placed around a palletized good stack in particular.
- Such heat shrink films are used today, among other things, to Securing goods for example on a pallet for transport.
- a heat shrink film is placed around the stack of goods so that the heat shrink film does not slide down. This is done either directly in a shrinking station or in a separate station upstream of the shrinking station.
- the hot shrink film is then acted upon by hot gas through the shrinking device, so that the heat shrink film is heated to shrink temperature and shrunk and thus contracts around the stack of goods.
- the shrinking device can be moved up and down vertically, shrinking being possible both from top to bottom and from bottom to top. During the shrinking process, air is partially blown onto the stack of goods from above.
- Such a device does not permit wrinkle-free shrinkage, in particular upper shrinkage, that is to say shrinkage of the film protrusion of the heat shrink film protruding from the top of the stack of goods, and thus, for example, an accompanying note arranged on the top of the stack of goods between the stack of goods and the heat shrink film, for example has a barcode that is not readable.
- the object of the invention is therefore to develop a device mentioned at the outset in such a way that the shrinkage of the top and / or bottom film overhang is improved and an optimal wrinkle-free shrinkage is achieved.
- a device for shrinking a heat shrink film which is placed around a particularly palletized stack of goods, consisting of at least one shrinking device which can be moved up and down on a frame for heating and shrinking the heat shrink film in the vertical direction, the heat shrink film over the top and bottom / or the lower edge of the stack of goods protrudes to form the upper and lower shrinkage, and from at least one nozzle which can be connected to a gas pressure source, in particular a compressed air source, and which is (are) arranged approximately centrally above and / or below the stack of goods, each nozzle having outlet openings, which are aligned at an angle to the direction of flow within the nozzle and are arranged essentially in a ring.
- a gas pressure source in particular a compressed air source
- the compressed air is not blown perpendicularly onto the surface of the stack of goods. Rather, the compressed air is either at an angle to the Surface guided and deflected there in the direction of the film protrusion or - if the outlet openings are aligned approximately at 90 ° to the direction of flow within the nozzle - blown directly onto the film protrusion.
- the film protrusion is held up during the upper shrink phase, so that uniform heating is ensured by the shrinking device during the upper shrink phase. This even heating results in a wrinkle-free upper shrink after pulling together the film overhang on the top of the stack of goods.
- Each nozzle advantageously has a chamfer at the end in which the outlet openings are provided, so that the compressed air is conducted in all directions at this angle.
- the outlet openings can be oriented essentially at an angle of 45 ° to the flow direction within the nozzle.
- Each nozzle can be moved up and down so that stacks of different dimensions can be shrunk in the shrinking station with a heat shrink film.
- the ideal distance for the upper shrink phase between the nozzle and the stack of goods can be set according to the height of the stack of goods and / or the dimensions of the top of the stack of goods.
- the device for holding the heat-shrink film on the stack of goods has a pressing device which is preferably attached to a lifting table provided for lifting the stack of goods.
- FIG. 1 is a side view of a device according to the invention
- Fig. 2 is a view through the blow-out area of a nozzle
- FIG. 3 shows a section through the object according to FIG. 2.
- Fig. 1 shows a shrinking station 1, which consists of a frame 2 and a shrinking device 3, z. B. in the form of a ring burner.
- the frame 2 has two masts 4 arranged side by side in a plane perpendicular to the plane of the drawing, of which only the front one in this view can be seen here. Both masts 4 are connected to one another via a transverse yoke (not shown) connecting their upper ends.
- a drive 5 is guided vertically displaceably on each mast 4, the guidance taking place via rollers 6, 7.
- the vertical movement of the drive 5 is effected via a revolving chain 8, the deflection at the lower and upper end of the mast 4 taking place via corresponding chain wheels 9, 10.
- the chain 8 is driven by a drive motor 11 arranged in the lower region of the masts 4, the two drives 5 being synchronized with one another in such a way that they are always at the same height.
- the drives 5 are connected to one another by the shrinking device 3, which has a shape adapted to the cross-sectional area of a stack of goods 12 - in the case shown an angular, frame-like shape - the area enclosed by the shrinking device 3 being large enough for it to be vertical a stack of goods 12 can be moved.
- Such a stack of goods 12 is located below the shrinking device 3 on a conveyor 13, which can be designed, for example, as a chain, roller or truss conveyor.
- the stack of goods 12 consists of a conventional pallet 14 and the goods 15 stacked thereon. If goods 15 of large dimensions are to be packed, a pallet 14 is not absolutely necessary.
- a lifting platform or a lifting table 16 on the upper side of which a lifting ram 17 projects upwards through a corresponding gap in the conveyor between the standard strips of the pallet 14, not shown.
- a suction fan can be arranged in the area of the lifting ram 17 and below the conveyor 13.
- a nozzle 19 is provided above and below the Gutstapeis 12, which can also be removed and stored.
- each nozzle 19 has a blunt end and has a circumferential chamfer 20 which is arranged at an angle of approximately 45 ° to the direction of flow within the nozzle 19.
- outlet openings 21 are arranged so that the compressed air is directed obliquely onto the stack of goods 12 (arrows 22).
- the outlet openings 21 extend in a star shape from a supply channel 23 arranged centrally in the nozzle 19.
- the compressed air When it hits the top of the stack of goods 12, the compressed air is deflected in the direction of the arrows 24 and causes an uprighting and thus holding up a film protrusion 25 of a heat shrink film 26. Furthermore, the compressed air exiting via the nozzle 19 leads the hot air of the shrinking device 3 to the inside of the Film protrusion 25.
- the shrinking device 3 is supplied with gas via supply lines 27.
- the outlet openings 21 are distributed in a ring over the circumference of the chamfer 20 - as shown in FIG. 3 - so that the compressed air is directed in all directions. If, on the other hand, several nozzles 19 are provided, the outlet openings 21 of each nozzle 19 are preferably arranged in such a way that each nozzle 19 guides the compressed air only to a specific area of the stack of goods 12; however, the arrangement of the outlet openings 21 under the provided nozzles 19 is selected such that the film protrusion 25 of the heat shrink film 26 is erected at any point by the compressed air.
- the shrinking with the device according to the invention proceeds as follows.
- the heat shrink film 26 is placed or wrapped around the stack of goods 12. This can be done in a the shrinking station 1 upstream or in the shrinking station 1 itself. If the transfer takes place in a separate station, the stack of goods 12 surrounded by the heat shrink film 26 is transported to the shrinking station 1 by means of the conveyor 13.
- the heat shrink film 26 is severed in the middle between the two weld seams with a separating device, so that the next stack of goods 12 can be provided with a heat shrink film 26. If possible, the heat shrink film 26 lies against the stack of goods 12 in such a way that it cannot slide down. It is obvious that the stack of goods 12 can also be provided with the heat shrink film 26 in another way.
- a pressing device 28 is provided on the lifting table 16, which presses the heat shrink film against the stack of goods 12 and thus holds it there.
- the shrinking of the heat shrink film 26 then takes place by vertical movement of the shrinking device 3. It makes sense that shrinking occurs from top to bottom, but shrinking in the opposite direction is also possible.
- the compressed air supply via the nozzle 19 is switched off, so that the film protrusion 25 pulls over the surface of the stack of goods 12.
- the shrinking device 3 is then moved downward to shrink the side surfaces of the stack of goods 12, the heat-shrink film 26 contracting strongly over the side surfaces of the stack of goods 12.
- the stack of goods 12 is raised somewhat by the lifting ram 17 by means of the lifting device 16.
- the shrinking device 3 is then lowered to the level of the conveyor 13 by a corresponding method of the running branches 5. Now the lower edge of the heat shrink film 26 is acted upon by the shrinking device 3 with hot gas, so that it is heated to the shrink temperature and contracts under the underside of the pallet 14. At least one nozzle 19 also serves to achieve good shrinkage.
- the stack of goods 12 is lowered again onto the conveyor 13 while the edge of the heat shrink film 26 is still heated, whereby the hot edge between the conveyor 13 and the underside of the pallet 14 is pressed together with the effect that the individual layers of this edge are welded together .
- the stack of goods 12 can be moved out of the shrinking station 1 via the conveyor 13. The procedure described above is repeated for a new stack of goods.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Wrappers (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Packages (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Closing Of Containers (AREA)
- Labeling Devices (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Laminated Bodies (AREA)
- Packaging Frangible Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29901423U | 1999-01-28 | ||
DE29901423U DE29901423U1 (en) | 1999-01-28 | 1999-01-28 | Device for shrinking a heat shrink film |
DE29905931U | 1999-04-01 | ||
DE29905931U DE29905931U1 (en) | 1999-01-28 | 1999-04-01 | Device for shrinking a heat shrink film |
PCT/EP2000/000444 WO2000044626A1 (en) | 1999-01-28 | 2000-01-21 | Device for shrinking a shrink-wrap film |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1147050A1 true EP1147050A1 (en) | 2001-10-24 |
EP1147050B1 EP1147050B1 (en) | 2002-10-02 |
Family
ID=26062215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00907478A Expired - Lifetime EP1147050B1 (en) | 1999-01-28 | 2000-01-21 | Device for shrinking a shrink-wrap film |
Country Status (18)
Country | Link |
---|---|
US (1) | US6837031B1 (en) |
EP (1) | EP1147050B1 (en) |
CN (1) | CN1174898C (en) |
AT (1) | ATE225282T1 (en) |
AU (1) | AU2905000A (en) |
BR (1) | BR0007828A (en) |
CA (1) | CA2359021C (en) |
CZ (1) | CZ297612B6 (en) |
DE (1) | DE50000600D1 (en) |
DK (1) | DK1147050T3 (en) |
ES (1) | ES2183785T3 (en) |
HU (1) | HUP0105139A3 (en) |
MX (1) | MXPA01007642A (en) |
PL (1) | PL202615B1 (en) |
PT (1) | PT1147050E (en) |
SK (1) | SK10832001A3 (en) |
TR (1) | TR200102163T2 (en) |
WO (1) | WO2000044626A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2855814A1 (en) | 2003-06-06 | 2004-12-10 | Thimon | Load packaging method, involves heating film on outer lateral surface of envelope by hot air to assure thermo-retraction of film on load, where cross flow air is hot to preheat internal wall of upper edge of envelope |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7523482B2 (en) * | 2002-08-13 | 2009-04-21 | Microsoft Corporation | Seamless digital channel changing |
US8397269B2 (en) * | 2002-08-13 | 2013-03-12 | Microsoft Corporation | Fast digital channel changing |
US7603689B2 (en) * | 2003-06-13 | 2009-10-13 | Microsoft Corporation | Fast start-up for digital video streams |
US7562375B2 (en) * | 2003-10-10 | 2009-07-14 | Microsoft Corporation | Fast channel change |
US7444419B2 (en) * | 2003-10-10 | 2008-10-28 | Microsoft Corporation | Media stream scheduling for hiccup-free fast-channel-change in the presence of network chokepoints |
ZA200803285B (en) * | 2005-10-24 | 2009-08-26 | Msk Verpackung Syst Gmbh | Method and device for shrinking a heat shrink film placed around a stack of items, in particular a palleted stack of items |
DE202005020192U1 (en) * | 2005-10-24 | 2006-05-24 | MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung | Device for shrinking a heat-shrinkable film placed around a, in particular palletized, stack of goods |
US8135040B2 (en) * | 2005-11-30 | 2012-03-13 | Microsoft Corporation | Accelerated channel change |
CN102673836A (en) * | 2012-06-11 | 2012-09-19 | 常州市成功建材机械有限公司 | Fuel gas heat shrinkable film equipment |
CN102689715B (en) * | 2012-06-14 | 2015-06-24 | 长沙长泰机械股份有限公司 | Gas heat shrinkage furnace |
DK3214003T3 (en) * | 2016-03-01 | 2019-04-15 | Msk Verpackung Syst Gmbh | Method and apparatus for shrinking a heat shrink wrap which is laid around a particularly palletised goods stack |
ES2873648T3 (en) * | 2017-03-28 | 2021-11-03 | Msk Verpackung Syst Gmbh | Procedure for creating at least one free space in an envelope consisting of a stretch film that secures a stack of products arranged on a pallet, and a shaping device to carry out the procedure |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3662512A (en) * | 1968-01-24 | 1972-05-16 | Weldotron Corp | Method and apparatus for shrink-film wrapping a pallet load |
US3807126A (en) * | 1970-06-10 | 1974-04-30 | Schwartz F Gmbh Ind Und Maschi | Wrapping and securing loads on pallets |
NO127044C (en) * | 1971-02-10 | 1975-04-22 | Fernholt & Giertsen | |
DE2153001A1 (en) | 1971-10-25 | 1973-05-03 | Ahrendt & Birkendahl Ohg | PROCESS AND DEVICE FOR SHRINKING GOODS IN PLASTIC FILM |
US3853218A (en) * | 1973-01-30 | 1974-12-10 | Gilbert G | Load of goods comprising a plurality of layers, and a method and a machine for producing said load |
US3897671A (en) * | 1973-08-31 | 1975-08-05 | Comptex | Apparatus and method for covering a load on a pallet |
DE3120215A1 (en) * | 1981-05-21 | 1982-12-16 | Bernhard Beumer Maschinenfabrik Kg, 4720 Beckum | "PLANT FOR MANUFACTURING PALLETLESS, FILM-SHRINKED PIECE STACK, IN PARTICULAR BAG STACK" |
DE3262894D1 (en) * | 1981-10-16 | 1985-05-09 | Msk Verpackung Syst Gmbh | Method and device for packaging goods stacked on a pallet |
ATE20015T1 (en) * | 1982-12-30 | 1986-06-15 | Msk Verpackung Syst Gmbh | METHOD AND DEVICE FOR SHRINKING A SHRINK HOOD DRAFTED OVER A PARTICULARLY PALLETIZED STACK OF GOODS. |
DE3327996A1 (en) * | 1983-08-03 | 1985-02-14 | MSK - Verpackungs-Systeme GmbH, 4190 Kleve | METHOD FOR PACKING PALLETIZED GOODS STACKS AND DEVICE FOR CARRYING OUT THIS METHOD |
DE8513892U1 (en) * | 1985-05-10 | 1985-09-05 | MSK - Verpackungs-Systeme GmbH, 4190 Kleve | Device for covering and shrinking stacks of goods with shrink hoods |
EP0283541B1 (en) | 1987-03-26 | 1991-09-25 | VFI Gesellschaft für Verpackungstechnik mbH | Method and apparatus for shrinking a plastic hood around a palletized load |
US4879861A (en) * | 1988-04-20 | 1989-11-14 | Mcadams William J | Method for packaging firewood and the apparatus thereof |
DE8816085U1 (en) | 1988-12-24 | 1989-03-09 | MSK-Verpackungs-Systeme GmbH, 4190 Kleve | Device for packing a stack of goods arranged on a pallet |
ATE126490T1 (en) * | 1990-09-13 | 1995-09-15 | Hannen Reiner Develog | METHOD FOR COVERING STRETCH FILM COVERS OVER A STACK OF GOODS AND DEVICE FOR CARRYING OUT THE METHOD. |
EP0597141A1 (en) | 1992-11-10 | 1994-05-18 | VfI Gesellschaft für Verpackungstechnik mbH | Method and apparatus for the packing of goods stacked on a pallet |
DE4423513C1 (en) * | 1993-10-26 | 1996-02-01 | Moellers Maschf Gmbh | Device for shrinking a shrink film hood |
IT1298369B1 (en) * | 1997-12-10 | 2000-01-05 | Pieri Srl | METHOD AND APPARATUS FOR THE SEAMLESS FIXING OF THE WINDING TAIL OF PALLETIZED LOADS, MADE WITH FILM |
-
2000
- 2000-01-21 EP EP00907478A patent/EP1147050B1/en not_active Expired - Lifetime
- 2000-01-21 ES ES00907478T patent/ES2183785T3/en not_active Expired - Lifetime
- 2000-01-21 AU AU29050/00A patent/AU2905000A/en not_active Abandoned
- 2000-01-21 AT AT00907478T patent/ATE225282T1/en not_active IP Right Cessation
- 2000-01-21 BR BR0007828-0A patent/BR0007828A/en not_active IP Right Cessation
- 2000-01-21 TR TR2001/02163T patent/TR200102163T2/en unknown
- 2000-01-21 HU HU0105139A patent/HUP0105139A3/en unknown
- 2000-01-21 DK DK00907478T patent/DK1147050T3/en active
- 2000-01-21 SK SK1083-2001A patent/SK10832001A3/en unknown
- 2000-01-21 MX MXPA01007642A patent/MXPA01007642A/en active IP Right Grant
- 2000-01-21 WO PCT/EP2000/000444 patent/WO2000044626A1/en active IP Right Grant
- 2000-01-21 DE DE50000600T patent/DE50000600D1/en not_active Expired - Lifetime
- 2000-01-21 CA CA002359021A patent/CA2359021C/en not_active Expired - Fee Related
- 2000-01-21 PT PT00907478T patent/PT1147050E/en unknown
- 2000-01-21 CN CNB008032289A patent/CN1174898C/en not_active Expired - Lifetime
- 2000-01-21 CZ CZ20012729A patent/CZ297612B6/en not_active IP Right Cessation
- 2000-01-21 US US09/890,372 patent/US6837031B1/en not_active Expired - Lifetime
- 2000-01-21 PL PL349878A patent/PL202615B1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO0044626A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2855814A1 (en) | 2003-06-06 | 2004-12-10 | Thimon | Load packaging method, involves heating film on outer lateral surface of envelope by hot air to assure thermo-retraction of film on load, where cross flow air is hot to preheat internal wall of upper edge of envelope |
EP1486420A1 (en) | 2003-06-06 | 2004-12-15 | Thimon | Method and apparatus for packaging a load with a flexible heatshrinkable foil. |
Also Published As
Publication number | Publication date |
---|---|
DE50000600D1 (en) | 2002-11-07 |
MXPA01007642A (en) | 2002-05-14 |
PT1147050E (en) | 2003-01-31 |
CA2359021A1 (en) | 2000-08-03 |
AU2905000A (en) | 2000-08-18 |
CZ20012729A3 (en) | 2002-03-13 |
US6837031B1 (en) | 2005-01-04 |
HUP0105139A2 (en) | 2002-04-29 |
ATE225282T1 (en) | 2002-10-15 |
CN1339003A (en) | 2002-03-06 |
PL202615B1 (en) | 2009-07-31 |
CN1174898C (en) | 2004-11-10 |
EP1147050B1 (en) | 2002-10-02 |
TR200102163T2 (en) | 2002-01-21 |
CZ297612B6 (en) | 2007-02-14 |
CA2359021C (en) | 2008-07-29 |
ES2183785T3 (en) | 2003-04-01 |
HUP0105139A3 (en) | 2003-01-28 |
BR0007828A (en) | 2002-01-15 |
WO2000044626A1 (en) | 2000-08-03 |
PL349878A1 (en) | 2002-09-23 |
SK10832001A3 (en) | 2002-02-05 |
DK1147050T3 (en) | 2002-10-28 |
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