EP0653352A1 - Transmission variable par incréments entre des rouleaux de pré-étirage dans une machine d'emballage à film étirable - Google Patents

Transmission variable par incréments entre des rouleaux de pré-étirage dans une machine d'emballage à film étirable Download PDF

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Publication number
EP0653352A1
EP0653352A1 EP94850205A EP94850205A EP0653352A1 EP 0653352 A1 EP0653352 A1 EP 0653352A1 EP 94850205 A EP94850205 A EP 94850205A EP 94850205 A EP94850205 A EP 94850205A EP 0653352 A1 EP0653352 A1 EP 0653352A1
Authority
EP
European Patent Office
Prior art keywords
gear train
variable transmission
roller
shaft
prestretching
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
EP94850205A
Other languages
German (de)
English (en)
Other versions
EP0653352B1 (fr
Inventor
Jan Idh
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.)
BURTECH AB
Original Assignee
BURTECH AB
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 BURTECH AB filed Critical BURTECH AB
Publication of EP0653352A1 publication Critical patent/EP0653352A1/fr
Application granted granted Critical
Publication of EP0653352B1 publication Critical patent/EP0653352B1/fr
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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
    • B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary 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
    • 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 invention relates to an incrementally variable transmission for transmission of a torque between input and output rollers in a pre-stretching device for a stretch-film wrapping machine, to achieve selected prestretching of a plastic film with a predetermined yield point.
  • the input roller is caused to rotate at lower rpm than the output roller.
  • the transmission comprises a shifting mechanism arranged in a housing with various gearing increments between an input and an output shaft, and has a device for engaging and disengaging the input shaft to or from the shifting mechanism.
  • Stretch-film wrapping machines with prestretching for stationary or rotating goods are known.
  • Stretch-film possibly supplemented with top-film or topsheets, can provide a universal protecting covering for the goods at the same time as non-uniform goods are held together.
  • Stretch-film wrapping is a good protector for foodstuffs and chemical technical products, for example.
  • a known stretch-film wrapping machine comprises essentially a film roll or thin plastic film, e.g. Teno Cast 20 ⁇ , a prestretching device comprising two parallel rollers, which are caused to rotate at different rpm, and a driven rotatable turntable which supports the goods to be wrapped and which are suitably stacked on a pallet.
  • the first roller to which the film comes from the plastic film roll, is caused to rotate at relatively low rpm, e.g. 10 rpm, and this determines the speed at which the film will leave the film roll.
  • the second roller via which the film after prestretching leaves the prestretching device, is caused to rotate in the opposite direction, and at a higher rpm than the first roller, e.g.
  • the film will leave the prestretching device at a higher speed than the feeding speed. This achieves a prestretching of the film in the transition portion between the two rollers which results in a film thickness of about 3 ⁇ , which is desirable for economic reasons among other things.
  • a drive device in the form of an electric motor for example, which supplies a positive torque to the rollers and thus brings the film tension down to very small values.
  • a known solution is to arrange a transmission with a fixed set of gears between the roller shafts, but this solution requires an unreasonable amount of work since the transmission ratio can only be changed by replacing the gears. It is also known to arrange a gear transmission with fixed ratio increments and a number of gears on each roller shaft, thus permitting three selectable transmission ratios between the shafts. Via a clutch, the input roller can be engaged or disengaged from the gear transmission. Alternatively, a belt transmission with continuously variable transmission ratio between the shafts is used.
  • the known devices are unsatisfactory in their function because they are complicated and bulky, have few feed steps or have a continuously variable transmission and must be stopped or disassembled for resetting. There is also lacking automatic release of the input roller from the transmission, the output roller and in applicable cases from the torque device if there is a break in the film, which can result in time-consuming downtime due to the fact that the film will be wrapped around the rollers.
  • the purpose of the present invention is therefore to provide an integrated transmission unit which does not have the above mentioned disadvantages, which is simple to manufacture at low cost, can be easily shifted between a large number of transmission steps and has automatic release of the input roller when there is extremely low film tension or film breakage.
  • the transmission comprises a gear unit and a clutch device, that the input and output shafts of the gear unit are coaxial, that the clutch device is a one-way clutch which is in engagement when the input roller is imparted, by means of the tension in the film between the rollers, a torque from the output roller, and that the clutch assumes its free-wheeling position when said torque is not present.
  • the stretch-film wrapping machine has a prestretching device 2, which has an input roller 4 and an output roller 6, said rollers having parallel shafts.
  • the rollers are rotatably mounted in a frame 8 and are coupled to each other by means of a reduction gear 14 of conventional type, consisting of a large gear 10 and a small gear 12, and by means of a transmission unit 16 with variable transmission ratios.
  • the rollers are shown here not in their entirety but only partially and, as regards the input shaft, only very schematically, since this roller is of a commonly occurring type and the transmission unit 16 is mounted on the output roller 6.
  • the rollers are rotatably mounted in their respective ends and have essentially the same diameter.
  • the circumference of each roller is provided with a friction-increasing element (not shown) or coating, to provide better grip between the rollers and the plastic film.
  • the transmission unit 16 is in the form of a housing 18 and has a planetary gear train 22 engageable with a free-wheel clutch 20 as well as a pulley 24.
  • the housing 18 has two cylindrical concentric inter-engaging components, an outer component 26 which also serves as the output shaft of the planetary gear train 22 and an inner housing component 28, to which the gear 12 is fixed.
  • the inner housing component serves as an input shaft to the planetary gear train.
  • the free-wheel clutch 20 and the planetary gear train 22 are housed in the housing 18.
  • the planetary gear train has a central through-shaft 30 which is concentrically disposed in the housing 18 and has two shaft ends 32,34 which extend from either end piece 36,38, located in a free end of the respective components 26,28.
  • the shaft end 32 extending from the inner housing component is fixed by means of a lock screw 40 in an opening in a mounting plate 44 anchored on the frame 8 via a bracket 42.
  • the shaft end 34 extending from the opposite end piece 38 of the housing 18 is threaded and screwed into a corresponding thread in one end of a rod shaft 46, which extends through the center of the output roller 6 mounted rotatably on the same.
  • the end piece 38 and the housing 26 are rotatable relative to each other.
  • the thread of the pin 34 is locked to the thread of the rod shaft 46 by lock nuts 48, which also prevent the end piece 34 from being rotated relative to the shaft end and the rod shaft.
  • the other end of the rod shaft 46 is screwed securely by means of a screw fastener 50 to the lower portion of the frame 8.
  • the housing component 26 has a annular flange 52 disposed close to the outer end adjacent the end piece 38, on which flange the upper end of the output roller 6 is screwed.
  • An annular gap 54 close to the upper end of the roller 6 assures that the roller and the rod shaft will be free of each other.
  • the housing component 26 with the flange 52 and output roller 6 will be rotatable relative to the shaft end 34 fixed in the frame 8 and the housing end piece 38.
  • the end of the rod shaft 46 mounted in the lower portion of the frame 8 is coupled via a bearing 56 of conventional type, e.g.
  • a driving device 58 for driving the prestretching device 2 at a predetermined rpm during a predetermined time interval comprises a conventional electric motor (not shown), which is connected via a drive belt (not shown) to the pulley 24 mounted on the periphery of the housing component 26.
  • the stretch-film wrapping machine also has a sensor (not shown) which regulates, via a computer control, the rpm of the drive motor depending on the speed at which the plastic film is wrapped around the goods, and which senses whether the film is intact and stops the drive motor if the film breaks.
  • the transmission unit 16 there can be used with advantage a bicycle hub with seven gear speeds and a free-wheel arrangement. Therefore the design of the bicycle hub will not be discussed in more detail here with a planetary gear train and a free-wheel.
  • the bicycle hub need only be modified by replacing the sprocket with the gear 12, removing one spoke flange (the other serves as the annular flange 52) and by mounting the pulley 24 around the outer component 26 of the bicycle hub.
  • the bicycle hub is mounted as described above by anchoring each shaft end 32,34 in the frame 8 of the prestretching device 2 and by screwing the upper end of the roller 6 to the annular flange 52.
  • the stretch-film wrapping machine with the prestretching device 2 functions as follows. In normal operation without the motor engaged, the tension in the film, which is generated when the goods on the turntable is rotated, strives to turn the two rollers 4,6 at the same rpm, provided they have the same outer diameter.
  • the reduction gear train 14 forces, however, the input roller 4 to rotate at a lower rpm than the output roller 6.
  • a suitable value of the gear ratio in the reduction gear train is 1:3.
  • a one-way clutch 20 is mounted between the gear 12 and the planetary gear train 22 on the output roller 6 in such a manner that the one-way clutch is in engagement when the input roller 4 via its gear 10, the reduction gear train 14 and the planetary gear train 22 strives to "push” the output roller 6. For this reason and due to the film tension and the gear ratio, the input roller is "braked” and rotates at a given speed ratio as long as the planetary gear train 22 transmits the rotation of the gear 12 unchanged to the roller 6.
  • the plastic film is thus prestretched between the rollers but this is sufficient only for a certain film with specific properties.
  • the prestretching can be both optimized for plastic film of varying thickness and quality and be varied for increased utility of films with certain specific properties.
  • a film with a thickness of approximately 3 ⁇ can, however, be easily torn off, especially since the tensile force exerted by the pallet goods is not even but is pulsating. In order to reduce the risk of film breakage, it is therefore advantageous to engage the drive device 58, whereby the film tension is minimized between the prestretching device 2 and the pallet goods. In a motor-driven prestretching device, it is also possible to achieve further stretching of the film.
  • Figure 3 shows the achievable degree of stretching with motor operation, as a function of the selected gear. It is evident from the diagram that a plastic film of the same quality as Teno Cast 20 ⁇ is theoretically prestretchable 60 to 360% depending on the gear increment selected (1 - 7).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Basic Packing Technique (AREA)
  • Gear Transmission (AREA)
EP19940850205 1993-11-17 1994-11-17 Transmission variable par incréments entre des rouleaux de pré-étirage dans une machine d'emballage à film étirable Expired - Lifetime EP0653352B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9303804A SE502041C2 (sv) 1993-11-17 1993-11-17 Stegvis variabel transmission mellan försträckningsvalsar i en sträckfilmningsmaskin
SE9303804 1993-11-17

Publications (2)

Publication Number Publication Date
EP0653352A1 true EP0653352A1 (fr) 1995-05-17
EP0653352B1 EP0653352B1 (fr) 1997-08-13

Family

ID=20391783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940850205 Expired - Lifetime EP0653352B1 (fr) 1993-11-17 1994-11-17 Transmission variable par incréments entre des rouleaux de pré-étirage dans une machine d'emballage à film étirable

Country Status (5)

Country Link
EP (1) EP0653352B1 (fr)
DE (1) DE69404948T2 (fr)
DK (1) DK0653352T3 (fr)
ES (1) ES2105592T3 (fr)
SE (1) SE502041C2 (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188671A1 (fr) 2000-09-18 2002-03-20 Leng Pac AB Procédé et dispositif pour pré-étirer un film étirable
GB2395165A (en) * 2002-11-11 2004-05-19 Arboc Ltd Rollers for pre-stretching a plastic film
WO2007010341A1 (fr) * 2005-07-15 2007-01-25 Bema S.R.L. Procédé et système destinés à emballer des charges à l’aide d’un film plastique préalablement étiré
WO2008155129A1 (fr) * 2007-06-21 2008-12-24 Combipac Bv Film pré-étiré
US20120174533A1 (en) * 2005-04-08 2012-07-12 Lantech.Com, Llc Method and Apparatus For Dispensing An Amount Of Film Relative To Girth
US9725195B2 (en) 2008-01-07 2017-08-08 Lantech.Com, Llc Electronic control of metered film dispensing in a wrapping apparatus
US9764867B2 (en) 2011-01-18 2017-09-19 Signode Industrial Group Llc Gripper
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
US9932134B2 (en) 2012-09-07 2018-04-03 Signode Industrial Group Llc Method and apparatus for setting corner protectors on a load
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
US10011383B2 (en) 2011-09-30 2018-07-03 Signode Industrial Group Llc Method for converting a wrapping machine into a transport condition, and a wrapping machine
US10053253B2 (en) 2014-10-07 2018-08-21 Lantech.Com, Llc Graphical depiction of wrap profile for load wrapping apparatus
US10138012B2 (en) 2013-10-31 2018-11-27 Signode Industrial Group Llc Apparatus for fixing and releasing the end of a roll of wrapping film
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
US10239645B2 (en) 2013-02-13 2019-03-26 Lantech.Com, Llc Packaging material profiling for containment force-based wrapping
US10273031B2 (en) 2015-02-02 2019-04-30 Signode Industrial Group Llc Packaging apparatus and method for operating same
US10421570B2 (en) 2014-05-07 2019-09-24 Signode Industrial Group Llc Method for packaging of an article of merchandise
US10526097B2 (en) 2011-05-06 2020-01-07 Signode Industrial Group Llc Reefing under stretch
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
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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336679A (en) * 1979-11-21 1982-06-29 Lantech Inc. Film web drive stretch wrapping apparatus and process
FR2544702A1 (fr) * 1983-04-20 1984-10-26 Polypack Ind Dispositif permettant d'assurer l'etirement d'un film plastique entre deux rouleaux et machines d'emballage le comportant
EP0220712A1 (fr) * 1985-10-30 1987-05-06 PIERI S.r.l. Procédé et appareil pour envelopper des charges avec un film étirable
FR2606365A1 (fr) * 1986-11-12 1988-05-13 Sfeima Sarl Procede et dispositif d'emballage de charges au moyen de films etirables avec une face autocollante et au moyen de filets etirables

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336679A (en) * 1979-11-21 1982-06-29 Lantech Inc. Film web drive stretch wrapping apparatus and process
FR2544702A1 (fr) * 1983-04-20 1984-10-26 Polypack Ind Dispositif permettant d'assurer l'etirement d'un film plastique entre deux rouleaux et machines d'emballage le comportant
EP0220712A1 (fr) * 1985-10-30 1987-05-06 PIERI S.r.l. Procédé et appareil pour envelopper des charges avec un film étirable
FR2606365A1 (fr) * 1986-11-12 1988-05-13 Sfeima Sarl Procede et dispositif d'emballage de charges au moyen de films etirables avec une face autocollante et au moyen de filets etirables

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188671A1 (fr) 2000-09-18 2002-03-20 Leng Pac AB Procédé et dispositif pour pré-étirer un film étirable
GB2395165A (en) * 2002-11-11 2004-05-19 Arboc Ltd Rollers for pre-stretching a plastic film
GB2395165B (en) * 2002-11-11 2005-03-23 Arboc Ltd A pre-stretching device
US9187193B2 (en) * 2005-04-08 2015-11-17 Lantech.Com, Llc Method and apparatus for dispensing an amount of film relative to girth
US20120174533A1 (en) * 2005-04-08 2012-07-12 Lantech.Com, Llc Method and Apparatus For Dispensing An Amount Of Film Relative To Girth
WO2007010341A1 (fr) * 2005-07-15 2007-01-25 Bema S.R.L. Procédé et système destinés à emballer des charges à l’aide d’un film plastique préalablement étiré
BE1017659A3 (nl) * 2007-06-21 2009-03-03 Combipac Bv Voorgerokken rekwikkelfolie.
EP2164770A1 (fr) 2007-06-21 2010-03-24 Combipac BV Film pré-étiré
WO2008155129A1 (fr) * 2007-06-21 2008-12-24 Combipac Bv Film pré-étiré
EP2164770B1 (fr) 2007-06-21 2016-03-30 Combipac BV Film pré-étiré
US9725195B2 (en) 2008-01-07 2017-08-08 Lantech.Com, Llc Electronic control of metered film dispensing in a wrapping apparatus
US9908648B2 (en) 2008-01-07 2018-03-06 Lantech.Com, Llc Demand based wrapping
US9764867B2 (en) 2011-01-18 2017-09-19 Signode Industrial Group Llc Gripper
US10093439B2 (en) 2011-01-18 2018-10-09 Signode Industrial Group Llc Gripper
US10526097B2 (en) 2011-05-06 2020-01-07 Signode Industrial Group Llc Reefing under stretch
US11273935B2 (en) 2011-05-06 2022-03-15 Signode Industrial Group Llc Reefing under stretch
US10011383B2 (en) 2011-09-30 2018-07-03 Signode Industrial Group Llc Method for converting a wrapping machine into a transport condition, and a wrapping machine
US9932134B2 (en) 2012-09-07 2018-04-03 Signode Industrial Group Llc Method and apparatus for setting corner protectors on a load
US11111045B2 (en) 2012-10-25 2021-09-07 Lantech.Com, Llc Dynamic rotation angle-based wrapping
US9932137B2 (en) 2012-10-25 2018-04-03 Lantech.Com, Llc Corner geometry-based wrapping
US11104464B2 (en) 2012-10-25 2021-08-31 Lantech.Com, Llc Rotation angle-based wrapping of loads with varying dimensions
US11174056B2 (en) 2012-10-25 2021-11-16 Lantech.Com, Llc Load wrapping apparatus with controlled interventions
US11111046B2 (en) 2012-10-25 2021-09-07 Lantech.Com, Llc Load wrapping apparatus with rotational data shift
US10005581B2 (en) 2012-10-25 2018-06-26 Lantech.Com, Llc Effective circumference-based wrapping
US10005580B2 (en) 2012-10-25 2018-06-26 Lantech.Com, Llc Rotation angle-based wrapping
US11518558B2 (en) 2013-02-13 2022-12-06 Lantech.Com, Llc Containment force-based wrapping
US10717554B2 (en) 2013-02-13 2020-07-21 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
US10239645B2 (en) 2013-02-13 2019-03-26 Lantech.Com, Llc Packaging material profiling for containment force-based wrapping
US11912445B2 (en) 2013-02-13 2024-02-27 Lantech.Com, Llc Containment force-based wrapping
US10138012B2 (en) 2013-10-31 2018-11-27 Signode Industrial Group Llc Apparatus for fixing and releasing the end of a roll of wrapping film
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
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
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
US10421570B2 (en) 2014-05-07 2019-09-24 Signode Industrial Group Llc Method for packaging of an article of merchandise
US10926906B2 (en) 2014-10-07 2021-02-23 Lantech.Com, Llc Load stability-based wrapping
US10053253B2 (en) 2014-10-07 2018-08-21 Lantech.Com, Llc Graphical depiction of wrap profile for load wrapping apparatus
US10435191B2 (en) 2014-10-07 2019-10-08 Lantech.Com, Llc Projecting containment force for load wrapping apparatus
US10273031B2 (en) 2015-02-02 2019-04-30 Signode Industrial Group Llc Packaging apparatus and method for operating same
US11097865B2 (en) 2015-02-02 2021-08-24 Signode Industrial Group Llc Packaging apparatus and method for operating same
US11649084B2 (en) 2015-02-02 2023-05-16 Signode Industrial Group Llc Packaging apparatus and method for operating same
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
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
US11731793B2 (en) 2015-09-25 2023-08-22 Lantech.Com, Llc Stretch wrapping machine with automatic load profiling
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

Also Published As

Publication number Publication date
DK0653352T3 (da) 1998-03-30
EP0653352B1 (fr) 1997-08-13
ES2105592T3 (es) 1997-10-16
DE69404948D1 (de) 1997-09-18
SE9303804L (sv) 1995-05-18
DE69404948T2 (de) 1998-03-26
SE502041C2 (sv) 1995-07-24
SE9303804D0 (sv) 1993-11-17

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