EP1213223A1 - Dispositif pour dérouler un film plastique étirable - Google Patents

Dispositif pour dérouler un film plastique étirable Download PDF

Info

Publication number
EP1213223A1
EP1213223A1 EP01103118A EP01103118A EP1213223A1 EP 1213223 A1 EP1213223 A1 EP 1213223A1 EP 01103118 A EP01103118 A EP 01103118A EP 01103118 A EP01103118 A EP 01103118A EP 1213223 A1 EP1213223 A1 EP 1213223A1
Authority
EP
European Patent Office
Prior art keywords
film
guide roller
unwinding unit
unwinding
support arm
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Withdrawn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
EP01103118A
Other languages
German (de)
English (en)
Inventor
Luciano Calzavara
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.)
Officina Meccanica Sestese SpA
Original Assignee
Officina Meccanica Sestese SpA
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 Officina Meccanica Sestese SpA filed Critical Officina Meccanica Sestese SpA
Publication of EP1213223A1 publication Critical patent/EP1213223A1/fr
Withdrawn legal-status Critical Current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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
    • B65B11/045—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B2011/002—Prestretching mechanism in wrapping machines

Definitions

  • the present invention relates to an unwinding unit for plastic film in pallet-wrapping machines.
  • it relates to the means for controlling the tensioning of the film.
  • palletized products i.e. products loaded onto pallets, or in the production of multiple packages of products of various kinds (for example bags filled with coffee) grouped together in bundles
  • a film of extendable plastic for example low-density linear polyethylene
  • This type of extendable film is characterized by a notable capacity of extension and of keeping its elasticity, so as to be able to exert a tightening and retaining action on the products around which it is wound.
  • pallet-wrapping machines which may be essentially classified as two types: a first type, in which the load to be packaged is fixed, while the unit for unwinding the extendable film rotates around it and moves vertically with respect thereto, spirally winding the film; and a second type, in which the unwinding unit is simply displaceable vertically and the load is kept rotating about its axis, in front of the unwinding unit.
  • the two embodiments therefore have in common the capacity to perform a relative vertical translation and rotational movement, between the unwinding unit and the load to be wrapped, as a result of which the film is distributed over the load in spiral form.
  • films consisting of highly extendable material which allow a more or less constant pulling tension to be maintained with an elongation variable from about 80% to about 300%, have been widely used: therefore it is preferred to lengthen the film before winding it around the product, not only in order to confer on it the desired technical retaining characteristics, but also so as to use less material for the same results.
  • This lengthening operation - also called “pre-stretching” - is generally performed at the same time as unwinding of the film, by causing the latter to pass between a pair of rubberized rollers positioned close to each other, i.e. so-called pre-stretching rollers; these rollers operate at different speeds, the downstream roller having a peripheral speed greater than that of the upstream roller.
  • the unwinding unit together with the associated pre-stretching rollers, has assumed over time different forms and characteristics with the aim of improving more and more its performance and overcoming the problems associated with operation thereof.
  • this unwinding unit must not simply release the film, causing it to unwind from the reel, after lengthening it, but must be able to keep its operating parameters - and in particular the tension imparted to the film - as far as possible constant, despite the fact that the winding conditions are variable with a certain periodic frequency.
  • a first solution offered in the known art is that disclosed by Italian patent No. 1,179,310 dated 10.4.1984 in the name of ROBOPAC.
  • an idle roller - also called a "dandy" roller - is used, being located downstream of the pre-stretching rollers and mounted at the end of an oscillating arm: the film, passing over the dandy roller, applies to the end of the oscillating arm a pressure - greater or less depending on the instantaneous requirements of the film - which causes the arm to oscillate against a suitably calibrated damping element.
  • Oscillation of the arm acts on a position transducer, which emits a signal controlling the speed of rotation of a motor actuating the unwinding unit, varying the supply speed correspondingly.
  • a second solution proposed by the prior art consists in mounting the idle guide roller at the end of a rigid fixed arm and associating said idle roller with a speedometer dynamo. Passing of film over the idle roller causes rotation of the latter, and therefore of the dynamo, which produces an electric current with an intensity proportional to the speed of rotation; this current signal, suitably processed, provides the desired control signal for the electric motor actuating the pre-stretching unit.
  • the strain gauge sensor provides a first spurious signal, which does not depend on the tension of the film;
  • the main object of the present invention is therefore to provide a device for controlling the tensioning of the extendable film, which fully overcomes the abovementioned drawbacks and which, in particular, eliminates the production of spurious signals due to unwanted stresses affecting the strain gauge sensor.
  • a further object of the present invention is therefore to provide an unwinding unit which also overcomes this drawback; this object is achieved by means of the characteristic features which are described in Claim 2.
  • the thrust produced by the centrifugal force on the idle guide roller is directly absorbed by the pivoting axis of the associated support arm, namely does not produce any rotational component about said pivoting axis.
  • yet another object of the present invention is to provide an unwinding unit with a tension controlling device which also overcomes this drawback; this object is achieved by means of the characteristic features which are described in Claim 3. In this way, pulling of the film occurs at an angle variable with respect to said additional exit roller and therefore does not have any effect on the guide roller associated with the strain gauge sensor.
  • Fig. 1 is a schematic plan view of an unwinding unit according to the invention
  • Fig. 2 is also a plan view of a functional diagram of the unwinding unit according to Fig. 1;
  • Fig. 3 is an overall, schematic, perspective view of the unwinding unit according to Fig. 1;
  • Fig. 4 is a schematic vertical section along the line IV-IV in Fig. 1.
  • the rotating unwinding unit comprises a plurality of rollers for guiding and driving the film P, which are mounted on a frame formed essentially by two support plates 1 and 2. More precisely, the following are envisaged: a roller 3 intended to support the reel B supplying the film P, a first pair of idle guide rollers 4 and 5, a pair of pre-stretching rollers 6 and 7, the roller 7 of which is motorized and the roller 6 driven (as described more fully below), an additional pair of guide rollers 8 and 9, a sensor guide roller 10 associated with film tension sensor means, and an exit guide roller 11, from where the film P is conveyed away towards the load being wound (not shown) in the direction D.
  • the film P is unwound from the reel B along the path indicated by the dot-dash line in Fig. 2, through the series of rollers 4, 5, 6 and 7.
  • the film when passing over the pre-stretching rollers 6 and 7, the film is wound over an arc preferably greater than 180° such as to ensure stable adhesion of the film to the surface of the rollers; this ensures that, along the path between the roller 6 and the roller 7 - which rollers are actuated by the motor M so that the downstream roller 7 is moved at a peripheral speed greater than that of the upstream roller 6 - the film may undergo the desired stretching action.
  • the degree of said stretching is determined by the ratio between the peripheral speeds of the rollers 6 and 7 and may be, as is known, as much as 300%.
  • the film thus pre-stretched then proceeds from the roller 7 towards the rollers 8, 9, 10 and 11 and from the latter is fed in the direction D towards the load on the pallet to be wound.
  • the sensor guide roller 10 is mounted idle on a shaft 12, which is fixed to the support arm 13 at its top end only.
  • the arm 13 is integral with a hub 13a which is mounted inside a bush 14 by means of a pair of radial bearings 15.
  • the bush 14 is mounted fixed on the plate 2 of the unwinding unit.
  • a pressure lever 16 is fixed to the top end of the hub 13a by means of position adjusting means which are known per se and therefore not illustrated in greater detail.
  • the free end of said lever rests on a strain gauge sensor 17 which is supported in a fixed position by a rigid support 17a which is also integral with the plate 2.
  • the free bearing of the end of the pressure lever 16 on the strain gauge sensor is obtained in a "floating" manner, this term being understood as meaning that the supporting action is essentially free in the vertical plane of the surface of the strain gauge sensor, such that the forces which are exerted in a direction perpendicular to this plane, and therefore solely pressure forces, may be transmitted to said sensor.
  • the electric signal generated by the strain gauge sensor 17 is suitably processed, using techniques known in the sector of strain gauges, so as to provide the desired signal for regulating the motor M actuating the pre-stretching rollers 6 and 7.
  • the arm 13 is oriented with an alignment coinciding with the vertical plane (schematically indicated by the dot-dash line X-X partly overlapping the cross-sectional line IV-IV) lying between the vertical pivoting axis of the hub 13a of the said arm 13 and the axis of rotation (not shown) of the unwinding unit around the load to be wrapped.
  • the centrifugal force which acts on the sensor guide roller 10 and shaft 12 - upon rotation of the unwinding unit along the path T - is converted into a thrust which in turn is completely absorbed by the fixed bush 14.
  • the centrifugal force is thus not able to produce any rotational component of the arm 13 which could possibly result into a pressure on the strain gauge sensor 17.
  • the sensor guide roller 10 does not perform also the function of an exit roller for conveying the film P towards the load, as occurs in all the arrangements of the known art.
  • An additional roller 11, downstream of the roller 10, is in fact envisaged, said roller 11 having just the function of an exit roller. Owing to the presence of this exit roller 11, the tension of the section of the film P which passes - with a variable angle, as described above - between the exit roller 11 and the load being wound transmits its variable effect solely onto the roller 11, without any variability effect occurring on the sensor guide roller 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Basic Packing Technique (AREA)
EP01103118A 2000-11-14 2001-02-09 Dispositif pour dérouler un film plastique étirable Withdrawn EP1213223A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI002446 2000-11-14
ITMI20002446 IT1319650B1 (it) 2000-11-14 2000-11-14 Aspo svolgitore dotato di mezzi di disattivazione del trascinamento.

Publications (1)

Publication Number Publication Date
EP1213223A1 true EP1213223A1 (fr) 2002-06-12

Family

ID=11446105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01103118A Withdrawn EP1213223A1 (fr) 2000-11-14 2001-02-09 Dispositif pour dérouler un film plastique étirable

Country Status (2)

Country Link
EP (1) EP1213223A1 (fr)
IT (1) IT1319650B1 (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007100598A2 (fr) * 2006-02-23 2007-09-07 Lantech.Com, Llc Appareil d'emballage annulaire comprenant un ensemble de distibution de film pre-etire mesure
WO2008007189A3 (fr) * 2006-07-07 2008-05-29 Aetna Group Spa Machine et procédés d'enveloppement
US7568327B2 (en) 2003-01-31 2009-08-04 Lantech.Com, Llc Method and apparatus for securing a load to a pallet with a roped film web
US7707801B2 (en) 2005-04-08 2010-05-04 Lantech.Com, Llc Method for dispensing a predetermined amount of film relative to load girth
ES2341209A1 (es) * 2008-07-22 2010-06-16 Aranguren Comercial Del Embalaje, S.L. Maquina enfardadora.
WO2010138282A1 (fr) * 2009-05-29 2010-12-02 Illinois Tool Works Inc. Appareil ou système de distribution de film et d'emballage sous film utilisant une technologie intelligente
US20110210471A1 (en) * 2008-08-05 2011-09-01 Ole-Bendt Rasmussen Method and apparatus for manufacture of a polymer film, which is oriented under an angle to its longitudinal direction
WO2013171354A1 (fr) * 2012-05-14 2013-11-21 Aranguren Comercial Del Embalaje S.L. Dispositif modulaire électrique de coupe et de soudure de film pour fardeuleuses
WO2015036807A1 (fr) * 2013-09-12 2015-03-19 Kőröspack Kft. Machine d'emballage sous film étirable de charges à l'aide d'un film étirable
US9493262B2 (en) 2010-10-29 2016-11-15 Lantech.Com, Llc Machine generated wrap data
US9725195B2 (en) 2008-01-07 2017-08-08 Lantech.Com, Llc Electronic control of metered film dispensing in a wrapping apparatus
ITUA20161827A1 (it) * 2016-03-18 2017-09-18 Atlanta Stretch S P A Apparecchiatura per l’avvolgimento di prodotti con un film di materiale estensibile
US9776748B2 (en) 2013-02-13 2017-10-03 Lantech.Com, Llc Containment force-based wrapping
US9908648B2 (en) 2008-01-07 2018-03-06 Lantech.Com, Llc Demand based wrapping
US9932137B2 (en) 2012-10-25 2018-04-03 Lantech.Com, Llc Corner geometry-based wrapping
US10005580B2 (en) 2012-10-25 2018-06-26 Lantech.Com, Llc Rotation angle-based wrapping
US10005581B2 (en) 2012-10-25 2018-06-26 Lantech.Com, Llc Effective circumference-based wrapping
US10053253B2 (en) 2014-10-07 2018-08-21 Lantech.Com, Llc Graphical depiction of wrap profile for load wrapping apparatus
US10227152B2 (en) 2014-01-14 2019-03-12 Lantech.Com, Llc Dynamic adjustment of wrap force parameter responsive to monitored wrap force and/or for film break reduction
US10934034B2 (en) 2015-09-25 2021-03-02 Lantech.Com, Llc Stretch wrapping machine with automated determination of load stability by subjecting a load to a disturbance
US11208225B2 (en) 2018-08-06 2021-12-28 Lantech.Com, Llc Stretch wrapping machine with curve fit control of dispense rate
EP4056483A1 (fr) * 2021-03-11 2022-09-14 Aranguren Comercial del Embalaje, S.L.U. Dispositif de pré-extension et de freinage de film pour chariot de bobine sur machine d'emballage
US11479378B2 (en) 2019-09-09 2022-10-25 Lantech.Com, Llc Stretch wrapping machine with dispense rate control based on sensed rate of dispensed packaging material and predicted load geometry
US11518557B2 (en) 2019-09-19 2022-12-06 Lantech.Com, Llc Packaging material grading and/or factory profiles
US11667416B2 (en) 2017-09-22 2023-06-06 Lantech.Com, Llc Load wrapping apparatus wrap profiles with controlled wrap cycle interruptions

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458467A (en) * 1981-03-31 1984-07-10 Infra Pak (Dallas), Inc. Pretensioner for stretchable film web with dancer roller compensation
US4840006A (en) * 1981-09-30 1989-06-20 International Packaging Machines, Inc. Stretch wrapping machine
US5123230A (en) * 1989-12-19 1992-06-23 B. Hagemann Gmbh & Co. Method and apparatus for wrapping articles in plastic
DE4234604A1 (de) * 1992-10-14 1994-04-21 Hagemann B Gmbh & Co Packmaschine mit Kompensiervorrichtung
EP0936141A1 (fr) * 1998-02-11 1999-08-18 Oy M. Haloila Ab Machine pour envelopper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458467A (en) * 1981-03-31 1984-07-10 Infra Pak (Dallas), Inc. Pretensioner for stretchable film web with dancer roller compensation
US4840006A (en) * 1981-09-30 1989-06-20 International Packaging Machines, Inc. Stretch wrapping machine
US5123230A (en) * 1989-12-19 1992-06-23 B. Hagemann Gmbh & Co. Method and apparatus for wrapping articles in plastic
DE4234604A1 (de) * 1992-10-14 1994-04-21 Hagemann B Gmbh & Co Packmaschine mit Kompensiervorrichtung
EP0936141A1 (fr) * 1998-02-11 1999-08-18 Oy M. Haloila Ab Machine pour envelopper

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10173795B2 (en) 2003-01-31 2019-01-08 Lantech.Com, Llc Method and apparatus for securing a load to a pallet with a roped film web
US9290282B2 (en) 2003-01-31 2016-03-22 Lantech.Com, Llc Apparatus for securing a load to a pallet with a roped film web
US7568327B2 (en) 2003-01-31 2009-08-04 Lantech.Com, Llc Method and apparatus for securing a load to a pallet with a roped film web
US11472580B2 (en) 2003-01-31 2022-10-18 Lantech.Com, Llc Method and apparatus for securing a load to a pallet with a roped film web
US8141327B2 (en) 2005-04-08 2012-03-27 Lantech.Com, Llc Method and apparatus for dispensing an amount of film relative to load girth
US7707801B2 (en) 2005-04-08 2010-05-04 Lantech.Com, Llc Method for dispensing a predetermined amount of film relative to load girth
US9187193B2 (en) 2005-04-08 2015-11-17 Lantech.Com, Llc Method and apparatus for dispensing an amount of film relative to girth
US8276346B2 (en) 2006-02-23 2012-10-02 Lantech.Com, Llc Wrapping apparatus and method including metered pre-stretch film delivery assembly
US8276354B2 (en) 2006-02-23 2012-10-02 Lantech.Com, Llc Apparatus for securing a load to a pallet with a roped film web
US8037660B2 (en) 2006-02-23 2011-10-18 Lantech.Com, Llc Method for securing a load to a pallet with a roped film web
WO2007100598A3 (fr) * 2006-02-23 2008-04-17 Lantech Com Llc Appareil d'emballage annulaire comprenant un ensemble de distibution de film pre-etire mesure
WO2007100598A2 (fr) * 2006-02-23 2007-09-07 Lantech.Com, Llc Appareil d'emballage annulaire comprenant un ensemble de distibution de film pre-etire mesure
US7779607B2 (en) 2006-02-23 2010-08-24 Lantech.Com, Llc Wrapping apparatus including metered pre-stitch film delivery assembly and method of using
EP2607245A3 (fr) * 2006-02-23 2014-04-09 Lantech.Com, Llc Procédé et appareil de distribution dosée de film pré-étiré
WO2008007189A3 (fr) * 2006-07-07 2008-05-29 Aetna Group Spa Machine et procédés d'enveloppement
EP2463203A3 (fr) * 2006-07-07 2012-08-01 AETNA GROUP S.p.A. Procédés d'emballage
US8448412B2 (en) 2006-07-07 2013-05-28 Aetna Group S.P.A Wrapping method
US8079201B2 (en) 2006-07-07 2011-12-20 Aetna Group S.P.A. Wrapping machine and wrapping methods
EP2463202A3 (fr) * 2006-07-07 2012-08-01 AETNA GROUP S.p.A. Machine d'emballage
US8250838B2 (en) 2006-07-07 2012-08-28 Aetna Group Spa Wrapping machine
US9908648B2 (en) 2008-01-07 2018-03-06 Lantech.Com, Llc Demand based wrapping
EP3838773A1 (fr) * 2008-01-07 2021-06-23 Lantech.com, LLC Commande électronique de distribution de film dosée dans un appareil d'emballage
US9725195B2 (en) 2008-01-07 2017-08-08 Lantech.Com, Llc Electronic control of metered film dispensing in a wrapping apparatus
ES2341209A1 (es) * 2008-07-22 2010-06-16 Aranguren Comercial Del Embalaje, S.L. Maquina enfardadora.
US20110210471A1 (en) * 2008-08-05 2011-09-01 Ole-Bendt Rasmussen Method and apparatus for manufacture of a polymer film, which is oriented under an angle to its longitudinal direction
US8747713B2 (en) * 2008-08-05 2014-06-10 Ole-Bendt Rasmussen Method and apparatus for manufacture of a polymer film, which is oriented under an angle to its longitudinal direction
CN102459004B (zh) * 2009-05-29 2014-08-13 普利马克包装有限责任公司 使用智能技术的薄膜分配和包装装置或系统
CN102459004A (zh) * 2009-05-29 2012-05-16 伊利诺斯工具制品有限公司 使用智能技术的薄膜分配和包装装置或系统
WO2010138282A1 (fr) * 2009-05-29 2010-12-02 Illinois Tool Works Inc. Appareil ou système de distribution de film et d'emballage sous film utilisant une technologie intelligente
US8453420B2 (en) 2009-05-29 2013-06-04 Illinois Tool Works Inc. Film dispensing and wrapping apparatus or system using smart technology
US9493262B2 (en) 2010-10-29 2016-11-15 Lantech.Com, Llc Machine generated wrap data
WO2013171354A1 (fr) * 2012-05-14 2013-11-21 Aranguren Comercial Del Embalaje S.L. Dispositif modulaire électrique de coupe et de soudure de film pour fardeuleuses
US11104464B2 (en) 2012-10-25 2021-08-31 Lantech.Com, Llc Rotation angle-based wrapping of loads with varying dimensions
US9932137B2 (en) 2012-10-25 2018-04-03 Lantech.Com, Llc Corner geometry-based wrapping
US10005580B2 (en) 2012-10-25 2018-06-26 Lantech.Com, Llc Rotation angle-based wrapping
US10005581B2 (en) 2012-10-25 2018-06-26 Lantech.Com, Llc Effective circumference-based wrapping
US11111045B2 (en) 2012-10-25 2021-09-07 Lantech.Com, Llc Dynamic rotation angle-based wrapping
US11111046B2 (en) 2012-10-25 2021-09-07 Lantech.Com, Llc Load wrapping apparatus with rotational data shift
US11174056B2 (en) 2012-10-25 2021-11-16 Lantech.Com, Llc Load wrapping apparatus with controlled interventions
US10717554B2 (en) 2013-02-13 2020-07-21 Lantech.Com, Llc Containment force-based wrapping
US10239645B2 (en) 2013-02-13 2019-03-26 Lantech.Com, Llc Packaging material profiling for containment force-based wrapping
US11518558B2 (en) 2013-02-13 2022-12-06 Lantech.Com, Llc Containment force-based wrapping
US11407538B2 (en) 2013-02-13 2022-08-09 Lantech.Com, Llc Packaging material profiling for containment force-based wrapping
US9776748B2 (en) 2013-02-13 2017-10-03 Lantech.Com, Llc Containment force-based wrapping
US11912445B2 (en) 2013-02-13 2024-02-27 Lantech.Com, Llc Containment force-based wrapping
WO2015036807A1 (fr) * 2013-09-12 2015-03-19 Kőröspack Kft. Machine d'emballage sous film étirable de charges à l'aide d'un film étirable
US10227152B2 (en) 2014-01-14 2019-03-12 Lantech.Com, Llc Dynamic adjustment of wrap force parameter responsive to monitored wrap force and/or for film break reduction
US11685567B2 (en) 2014-01-14 2023-06-27 Lantech.Com, Llc Dynamic adjustment of wrap force parameter responsive to monitored wrap force and/or for film break reduction
US11597554B2 (en) 2014-01-14 2023-03-07 Lantech.Com, Llc Dynamic adjustment of wrap force parameter responsive to monitored wrap force and/or for film break reduction
US10435191B2 (en) 2014-10-07 2019-10-08 Lantech.Com, Llc Projecting containment force for load wrapping apparatus
US10053253B2 (en) 2014-10-07 2018-08-21 Lantech.Com, Llc Graphical depiction of wrap profile for load wrapping apparatus
US10926906B2 (en) 2014-10-07 2021-02-23 Lantech.Com, Llc Load stability-based wrapping
US10934034B2 (en) 2015-09-25 2021-03-02 Lantech.Com, Llc Stretch wrapping machine with automated determination of load stability by subjecting a load to a disturbance
US11731793B2 (en) 2015-09-25 2023-08-22 Lantech.Com, Llc Stretch wrapping machine with automatic load profiling
US11505343B2 (en) 2015-09-25 2022-11-22 Lantech.Com, Llc Stretch wrapping machine with automated determination of load stability by subjecting a load to a disturbance
US11034470B2 (en) 2015-09-25 2021-06-15 Lantech.Com, Llc Stretch wrapping machine with automatic load profiling
ITUA20161827A1 (it) * 2016-03-18 2017-09-18 Atlanta Stretch S P A Apparecchiatura per l’avvolgimento di prodotti con un film di materiale estensibile
EP3219628A1 (fr) * 2016-03-18 2017-09-20 Atlanta Stretch S.p.A. Appareil pour produits d'emballage avec un film de matériel extensible
US11667416B2 (en) 2017-09-22 2023-06-06 Lantech.Com, Llc Load wrapping apparatus wrap profiles with controlled wrap cycle interruptions
US11208225B2 (en) 2018-08-06 2021-12-28 Lantech.Com, Llc Stretch wrapping machine with curve fit control of dispense rate
US11479378B2 (en) 2019-09-09 2022-10-25 Lantech.Com, Llc Stretch wrapping machine with dispense rate control based on sensed rate of dispensed packaging material and predicted load geometry
US11518557B2 (en) 2019-09-19 2022-12-06 Lantech.Com, Llc Packaging material grading and/or factory profiles
EP4056483A1 (fr) * 2021-03-11 2022-09-14 Aranguren Comercial del Embalaje, S.L.U. Dispositif de pré-extension et de freinage de film pour chariot de bobine sur machine d'emballage

Also Published As

Publication number Publication date
IT1319650B1 (it) 2003-10-23
ITMI20002446A1 (it) 2002-05-14

Similar Documents

Publication Publication Date Title
EP1213223A1 (fr) Dispositif pour dérouler un film plastique étirable
AU2006235273B2 (en) Method and apparatus for dispensing a predetermined fixed amount of pre-stretched film relative to load girth
EP2463202B1 (fr) Machine d'emballage
US20170283106A1 (en) Demand Based Wrapping
US4590746A (en) Constant tension stretch wrapping machine
US4862678A (en) Constant tension stretch wrapping machine
US4848697A (en) Arm for cable winding
EP2496480B1 (fr) Enveloppment sur demande
US4706443A (en) Constant tension stretch wrapping machine
WO1998022346A1 (fr) Fardeleuse de palettes epicycloidale
US5035372A (en) Winding device for a yarn, in particular for a yarn with approximately zero elongation
CA1241588A (fr) Dispositif et methode de conditionnement sous pellicule contractile, et regulateur d'alimentation connexe
JPH09216608A (ja) 包装用ウエブの繰り出し装置及び包装用ウエブの繰り出し方法
ITMI971901A1 (it) Dispositivo erogatore di pellicola plastica per fasciapallet con braccio di controllo del tensionamento

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): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20021130

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20030318

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030729