WO2002083501A1 - Appareil et procede de manipulation et de decoupe d'un materiau flexible entourant une charge - Google Patents

Appareil et procede de manipulation et de decoupe d'un materiau flexible entourant une charge Download PDF

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Publication number
WO2002083501A1
WO2002083501A1 PCT/CA2002/000504 CA0200504W WO02083501A1 WO 2002083501 A1 WO2002083501 A1 WO 2002083501A1 CA 0200504 W CA0200504 W CA 0200504W WO 02083501 A1 WO02083501 A1 WO 02083501A1
Authority
WO
WIPO (PCT)
Prior art keywords
trigger
clamp
cutter
assembly
roping
Prior art date
Application number
PCT/CA2002/000504
Other languages
English (en)
Inventor
Yanick Marois
Glen Ditchburn
Guy Lopes
Sylvain Samson
Original Assignee
Wulftec International Inc.
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 Wulftec International Inc. filed Critical Wulftec International Inc.
Publication of WO2002083501A1 publication Critical patent/WO2002083501A1/fr

Links

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
    • B65B2210/00—Specific aspects of the packaging machine
    • B65B2210/14—Details of wrapping machines with web dispensers for application of a continuous web in layers onto the articles
    • B65B2210/20—Details of wrapping machines with web dispensers for application of a continuous web in layers onto the articles the web dispenser being mounted on a rotary arm

Definitions

  • the present invention relates to an apparatus and method for handling and cutting a flexible material that is wrapped around a load.
  • the way a semi-automatic machine works can be defined by the following steps: a) an operator places a load to be wrapped on either a rotary or a fixed platform; b) the operator attaches a leading end of a film web to the load to be wrapped; c) the operator presses a start button on the machine so that a relative rotation between the load and a film delivering device is carried out, and waits until the wrap cycle is completed; d) the operator cuts the film web between the load being wrapped and the film delivering device; e) the operator removes the wrapped product from the platform.
  • An object of the invention is to therefore provide an apparatus and a method that satisfy the above-mentioned need and can thus be used to convert a semi-automatic load wrapping machine into an automatic load wrapping machine.
  • a drawback with apparatus or methods of the prior art is that none of them is concerned with an apparatus or methods for handling and cutting flexible material wrapped around an article in a simple and efficient manner.
  • Another object of the present invention is therefore to provide a method and an apparatus for handling and cutting a flexible material wrapped around a load in a manner that is simpler and more efficient than those provided in prior art.
  • an apparatus for handling and cutting a flexible material wrapped around a load by means of a delivering device comprising: a) a clamp and cutter assembly having: i) a controllable clamp movable between open and closed positions, the clamp having a trigger activated mechanism for moving the clamp between its open and closed positions, and ii) a controllable cutter movable between open and closed positions, the cutter having a trigger activated mechanism for moving the cutter between its open and closed positions; b) a trigger and roping assembly having: i) a trigger for triggering the trigger activated mechanisms of the controllable clamp and cutter, and ii) a roper for roping a portion of the flexible material; and c) a moving device connected to the trigger and roping assembly for moving the trigger and roping assembly between a retracted position and an active position where, as the trigger and roping assembly is moved into its active position, the trigger engages with the trigger activated mechanisms to move the clamp and the cutter to their
  • an apparatus for handling and cutting a flexible material wrapped around a load by means of a delivering device comprising: a) a clamp and cutter assembly having: i) a controllable clamp movable between open and closed positions, the clamp having a trigger activated mechanism for moving the clamp between its open and closed positions, and ii) a controllable cutter movable between open and closed positions, the cutter having a trigger activated mechanism for moving the cutter between its open and closed positions; b) a trigger and roping assembly having: i) a trigger for triggering the trigger activated mechanisms of the controllable clamp and cutter, and ii) a roper for roping a portion of the flexible material; and c) a moving device connected to the trigger and roping assembly for moving the trigger and roping assembly between a retracted position and an active position where, as the trigger and roping assembly is moved into its active position, the trigger engages with the trigger activated mechanisms to move the clamp and the
  • the moving device comprises a frame, a first arm having a first end pivotally connected to the frame, a second arm having a first end knuckle jointed to a second end of the first arm and a second end for carrying the trigger and roping assembly, and a motor for moving the first and second arms between active and retracted positions.
  • a method for handling and cutting a flexible material wrapped around a load by means of a delivering device comprising the steps of: a) moving a trigger and roping assembly from a retracted position to an active position; b) engaging a trigger of the trigger and roping assembly with a trigger activated means of a clamp and cutter assembly as the trigger and roping assembly is moved into its active position; c) moving the clamp and the cutter assembly from a closed position to an open position in response to the trigger engaging the trigger activated means; d) engaging a roper of the trigger and roping assembly with a portion of the flexible material extending from the load to the delivering device to turn said portion of flexible material into a rope, as the trigger and roping assembly is moved into its active position; e) moving the trigger and roping assembly from the active position to the retracted position; f) disengaging the trigger from the trigger activated means as the trigger and roping assembly is retracted from its active
  • Figure 1 is a perspective view of an apparatus for handling and cutting a flexible material, according to a preferred embodiment of the present invention
  • Figure 2 is a partial side view of the apparatus for handling and cutting a flexible material taken along lines ll-ll of Figure 1 ;
  • Figure 3 is a perspective view of an apparatus for handling and cutting a flexible material according to a preferred embodiment of the present invention, the apparatus being mounted alongside a first type of flexible material delivering device;
  • Figure 4 is a perspective view of an apparatus for handling and cutting a flexible material according to a preferred embodiment of the present invention, the apparatus being mounted alongside a second type of flexible material delivering device;
  • Figure 5 is a perspective view of an apparatus for handling and cutting a flexible material according to a preferred embodiment of the present invention, the apparatus being mounted alongside a third type of flexible material delivering device;
  • Figure 6 is a perspective view of an apparatus for handling and cutting a flexible material to be wrapped around a load according to a preferred embodiment of the present invention, the apparatus being mounted alongside the first type of flexible material delivering device with a trigger and roping assembly of the apparatus positioned in a retracted position;
  • Figure 7 is a partial perspective view of the apparatus for handling and cutting the flexible material that is shown in Figure 6;
  • Figure 8 is a partial perspective view of the apparatus for handling and cutting the flexible material that is shown in Figure 6 once the load has been wrapped with a flexible material by means of the delivering device;
  • Figure 9 is a partial perspective view of the apparatus for handling and cutting the flexible material that is shown in Figure 8 where the trigger and roping assembly thereof is positioned between its retracted and active positions according to a preferred embodiment of the present invention.
  • FIGS. 10A to 10E are partial perspective views of a trigger and roping assembly engaging with a clamp and cutter assembly in different engagement positions according to a preferred embodiment of the present invention
  • Figure 11 is a partial perspective view of the apparatus for handling and cutting the flexible material that is shown in Figure 9 where the trigger and roping assembly thereof is positioned in its active position, according to a preferred embodiment of the present invention.
  • Figures 12 and 13 are partial perspective views of the apparatus for handling and cutting the flexible material that is shown in Figure 9 where the trigger and roping assembly thereof is positioned in its active position and where a roper of the trigger and roping assembly has turned a portion of the flexible material into a rope;
  • Figure 14 is a partial perspective view of the apparatus for handling and cutting the flexible material that is shown in Figure 9 where the trigger and roping assembly is moved from its active position to its retracted position and where the clamp and cutter assembly has cut the rope and holds a free end of the rope, according to a preferred embodiment of the present invention.
  • Figure 15 is partial perspective view of the apparatus for handling and cutting the flexible material that is shown in Figure 14 as the trigger and roping assembly is further moved to its retracted position.
  • FIG. 1 to 15 there are shown preferred embodiments of an apparatus according to the present invention within the environment in which it operates.
  • the apparatus 100 is for handling and cutting a flexible material 20 that is wrapped around a load 57 by means of a delivering device 101.
  • the flexible material 20 may be a plastic film web that can be provided by any suitable delivering device 101.
  • FIGS. 3, 4 and 5 there are show three types of embodiments of delivering devices 101 that may be used with the apparatus 100.
  • delivering devices 101 may be used with the apparatus 100.
  • other delivering devices differing from those illustrated may be used with the apparatus of the present invention as will be understood by those skilled in the art.
  • the first type of delivering device 101 consists of a support frame 50 made of a vertical column and a horizontal beam.
  • the horizontal beam contains a rotation motor 54 used for rotating a rotatable horizontal arm 52 which is mounted under the horizontal beam.
  • the rotatable horizontal arm 52 contains an elevating motor 53 used for vertically moving a carriage 55 that holds a roll of flexible material to be wrapped around a load.
  • the carriage 55 is slidably mounted on a vertical boom structure 51 , which is connected at one end of the rotatable horizontal arm 52.
  • the second type of delivering device 101 is similar to the first type.
  • the second type of delivering device 101 also consists of a support frame 50, but in this case it has four legs connected together by horizontal bars.
  • the support frame 50 contains the same rotation motor 54 used for rotating the rotatable horizontal arm 52, which in turn has the same elevating motor (not shown) for vertically moving the carriage 55 that holds the roll of flexible material 56 to be wrapped around a load.
  • the carriage 55 is also slidably mounted on the vertical boom structure 51 , which is connected at one end of the rotatable horizontal arm 52. In order to wrap a load with both of the above-described delivering devices, the roll of flexible material is moved up and down while it is simultaneously rotated around a load.
  • the third type of delivering device includes a turntable 52c mounted on a support frame 50.
  • the delivering device has a fixed vertical structure 51c onto which a carriage 55 can slidably move up and down.
  • the roll is only moved vertically up and down while the load is simultaneously rotated by means of the turntable 52c.
  • the apparatus 100 is formed of a clamp and cutter assembly 102, a trigger and roping assembly 104, and a moving device 106.
  • the clamp and cutter assembly 102 includes a controllable clamp 108 that is movable between open and closed positions.
  • the clamp 108 preferably consists of a movable upper jaw 1 and a fixed lower jaw 40 covered with a silicone tube 58 (shown in Figure 12), which cooperates with the movable jaw 1 upon a clamping motion thereof.
  • the clamp 108 has a trigger activated mechanism for moving the clamp 108 between its open and closed positions.
  • the clamp and cutter assembly 102 also has a controllable cutter 110 that is also movable between open and closed positions.
  • the cutter 110 preferably consists of a movable upper blade 18 and a fixed lower blade 60, with the movable blade 18 being adjacent and solid with the movable jaw 1 and the fixed jaw 40 being adjacent to the fixed blade 60.
  • the cutter 110 also has a trigger activated mechanism for moving the cutter 110 between its open and closed positions.
  • both of the trigger activated mechanisms are preferably embodied by single trigger activated mechanism 41.
  • the triggered activated mechanism 41 preferably has a resilient device urging the clamp 108 and cutter 110 in their closed position.
  • Such resilient device may consist of a coiled spring 16 mounted on a pivot point 16a of the clamp and cutter assembly 102 as shown in Figure 12 for example.
  • the single trigger activated mechanism 41 comprises a two-legged member pivotally mounted on the pivot point 16a of the clamp and cutter assembly 102.
  • the two-legged member has a front extending leg 3a provided with a wheel 3 and rear extending leg 2a also provided with a wheel 2.
  • the two-legged member is biased by the coiled spring 16 resulting in the rear extending leg 2a being urged downward while the front extending leg 3a is urged upwards.
  • the same coiled spring 16 preferably urges the clamp and cutter assembly 102 in its normally closed position.
  • a preferred embodiment of the clamp and cutter assembly 102 is illustrated with numeral 15 corresponding to a deflector, numeral 37 to a clamp washer, numeral 38 to a spring washer, and numeral 39 to a clamp base.
  • a load stopper 19 may also be used for preventing the load to be pushed onto and possibly damaging the apparatus 100.
  • the trigger and roping assembly 104 includes a trigger 7 for triggering the trigger activated mechanisms of the controllable clamp 108 and cutter 110.
  • the trigger and roping assembly 104 also has a roper for roping a portion of the flexible material 20 as shown for example in Figures 11 to 13.
  • the roper preferably consists of a drive roping wheel 4, a motor 24 connected to the drive roping wheel 4, and an idler wheel 5 facing the drive roping wheel 4.
  • a curved guide 6 is preferably used for guiding the flexible material 20 toward the roper.
  • the trigger 7 preferably has rising, flat-top and descending ramps engaging with the wheels 2 and 3 of the two-legged member to move the clamp 1 and cutter 18 between the open and closed positions.
  • the trigger 7 may have other suitable shapes in order to achieve the same result, such as a continuous convex shape for example.
  • the trigger may be supported by a wheel 25 mounted on a support wheel member 26.
  • the moving device 106 is connected to the trigger and roping assembly 104 for moving the trigger and roping assembly 104 between a retracted position, as shown for example in Figures 3 to 8, and an active position, as shown for example in Figures 11 to 13.
  • the trigger and roping assembly 104 As the trigger and roping assembly 104 is moved into its active position, as shown for example in Figure 9, the trigger 7 engages with the trigger activated mechanisms 41 to move the clamp 108 and the cutter 110 to their open position, as shown in Figures 10A to 10C.
  • the roper engages with a portion of the " flexible material 20 extending from the load 57 to the delivering device 101 so as to turn such portion of flexible material 20 into a rope 21 , as shown for example in Figures 12 and 13.
  • the trigger and roping assembly 104 disengages with the trigger activated mechanism 41 to move the clamp 108 and the cutter 110 in their closed position, as shown for example in Figures 10D and 10E.
  • the clamp and cutter assembly 102 cuts the rope 21 by means of the cutter 110 and holds a free end of the rope 21 by means of the clamp 108.
  • the free end of the rope 21 held by the clamp 108 extends from the delivering device 101.
  • the moving device 106 includes a frame 27 and a first arm 11 having a first end pivotally connected to the frame 27.
  • a second arm 12 has a first end knuckle jointed to a second end of the first arm 11.
  • a second end of the second arm 12 pushes and pulls on a carrying member 32 provided with wheels 10 for carrying the trigger and roping assembly 104.
  • a motor 14 mounted on the frame 27 is used for moving the first and second arms 11 , 12 between the active and retracted positions.
  • the second arm 12 is connected to the carrying member through a pivot pin 34.
  • the frame 27 of the moving device 106 and the clamp and cutter assembly 102 are both preferably mounted on a plate 35 at a predetermined distance from each other, which can be adjusted according to the particular design parameters that are chosen.
  • the mounting of the moving device 106 and clamp and cutter assembly 102 on the plate 35 is particularly applicable to the first two types of delivering devices, which are illustrated in Figures 3 and 4.
  • FIG. 5 there is shown another use of the apparatus 100 according to a preferred embodiment of the present invention where the clamp and cutter assembly 102 is mounted on the rotatable turntable 52c of the delivering device 101.
  • the moving device 106 is positioned at a predetermined distance from the home position of the clamp and cutter assembly 102 mounted on the turntable 52c.
  • the clamp and cutter assembly 102 is rotated by the turntable 52c and makes at least a complete revolution before returning to its home position.
  • a method for handling and cutting the flexible material 20 wrapped around a load 57 by means of a delivering device 101 includes the following steps: a) moving the trigger and roping assembly 104 from a retracted position, as shown in Figure 9, to an active position as shown in Figure 11; b) engaging a trigger 7 of the trigger and roping assembly 04 with a trigger activated mechanism 41 of a clamp and cutter assembly 102 as the trigger and roping assembly 104 is moved into its active position as shown in Figure 10A; c) moving the clamp and the cutter assembly 102 from a closed position, as shown in Figure 10A, to an open position, as shown in Figures 10B and 10C, in response to the trigger 7 engaging the trigger activated mechanism 41; d) engaging a roper of the trigger and roping assembly 104 with a portion of the flexible material 20 extending from the load 57 to the delivering device 101 , as shown in Figure 12, to turn the portion of
  • the load is placed on the turntable 52c.
  • the operator then presses start on a button to wrap the load 57.
  • the wrapping cycle is started by rotating the film delivering carriage 55 around the load 57 (according to Figures 3 and 4) or by rotating the load 57 (according to Figure 5).
  • the carriage 55 fully wraps the load 57 with the flexible material 20 by moving the carriage 55 according to a conventional up and down motion.
  • the rotatable horizontal arm 52 or turntable 52c is stopped at a home position as shown in Figure 8.
  • the extendable arms 11 and 12 are then moved forward to the active position in order to position the trigger and roper assembly 104 under the flexible material 20 as shown in Figures 9 and 11.
  • the arm 11 may be provided with a stopper working in combination with a brake pad 36 in order to control its extension.
  • a proximity sensor 61 may also be used for such purpose.
  • the arms 11 and 12 are knuckle jointed by means of a bearing 30 and are provided with linkage bars 13 that are connected together by a linkage bracket 31.
  • the trigger 7 forces the jaw 1 of the clamp 108 and the blade 18 of the cutter 110 to open simultaneously as the trigger 7 hits the front extending wheel 3.
  • the blade and the cutter are provided with independent trigger mechanisms, it is not necessary that both clamp and cutter open at the same time.
  • the tail 17 is automatically released and it springs toward the load 57 that was wrapped.
  • a portion of the flexible material 20 is guided with the guide 6 in order to be positioned in the grasp of the roping wheels 4 and 5.
  • the proximity sensor 61 then sends a signal to activate the gear motor 24 that rotates the roping wheel 4.
  • the idler wheel 5 is spring loaded against the wheel 4 by a spring 9 through a lever bar 8 (shown in Figure 2) thus creating a pulling force on the flexible material 20.
  • the portion of the flexible material 20 is then pulled down and is turned into a rope 21 as shown in Figure 12. Once the rope 21 is formed, the arms 11 and 12 are brought back to their retracted position by activating the gear motor 14.
  • the clamp and the cutter are independent from each other, which means that they do not close simultaneously, then the clamp must be closed first and then the cutter second so as to ensure that the new tail is held and does not spring away if it is ever cut first by the cutter.
  • the cutter may remain open most of the time unlike the clamp which remains closed most of the time, with the cutter being closed only at the appropriate time.
  • the roper can also have different suitable configurations, such as a conveyor belt type of roper, but the one illustrated is preferred because of its compact size.
  • the moving device 106 which is shown embodied by the two arms 11 and 12, can also have other suitable configurations, such as a piston that pushes and pulls on the trigger and roping assembly. It can also be a motorized wheeled carriage moving back and forth along a track for carrying the trigger and roping assembly. Therefore the word "connected" used to describe the relation between the moving device and the trigger and roping assembly should be construed to mean operationally or temporarily connected and not necessarily permanently connected.
  • the load wrapping process becomes even simpler. Indeed, the operator only has to insert the leading end of the flexible material into the clamp only once. Thereafter, the operators just needs to bring the load, press start and remove the load once it is wrapped.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Abstract

La présente invention concerne un appareil et un procédé de manipulation et de découpe d'un matériau flexible (20) s'enroulant autour d'une charge (57) au moyen d'un dispositif débiteur (101). Cet appareil comporte un ensemble pince-couteau (102) pourvu d'un mécanisme actionné par déclencheur, et un ensemble déclencheur et boudineur (104). L'appareil comporte également un dispositif mobile (106) servant à déplacer l'ensemble déclencheur et boudineur entre une position d'action et une position de retrait. En fonctionnement, lorsque l'ensemble déclencheur et boudineur est amené en position d'action, le déclencheur vient au contact du mécanisme actionné par déclencheur de façon à amener l'ensemble pince-couteau en position ouverte alors que le boudineur débite en boudin une partie de matériau flexible. Lorsque l'ensemble déclencheur et boudineur passe de la position d'action à la position de retrait, le déclencheur se sépare du mécanisme actionné par déclencheur de façon à ramener l'ensemble pince-couteau en position fermée, ce qui coupe le boudin, et bloque en pince l'extrémité libre du boudin.
PCT/CA2002/000504 2001-04-11 2002-04-11 Appareil et procede de manipulation et de decoupe d'un materiau flexible entourant une charge WO2002083501A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,343,703 2001-04-11
CA 2343703 CA2343703A1 (fr) 2001-04-11 2001-04-11 Bride de serrage et methode d'utilisation

Publications (1)

Publication Number Publication Date
WO2002083501A1 true WO2002083501A1 (fr) 2002-10-24

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PCT/CA2002/000504 WO2002083501A1 (fr) 2001-04-11 2002-04-11 Appareil et procede de manipulation et de decoupe d'un materiau flexible entourant une charge

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CA (1) CA2343703A1 (fr)
WO (1) WO2002083501A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004045950A1 (fr) * 2002-11-18 2004-06-03 Noxon S.R.L. Systeme et procede de devidage et de coupe automatiques de film etirable
EP4001133A3 (fr) * 2020-11-24 2022-08-03 Cousins Packaging, Inc. Bras rotatif pour machine d'emballage étirable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3381269B1 (fr) * 2017-03-31 2020-09-02 Deere & Company Agencement d'emballage et presse à balles cylindriques associée

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204377A (en) * 1974-06-12 1980-05-27 Lantech, Inc. Process and apparatus for wrapping netting material around a load
US5452566A (en) * 1993-06-25 1995-09-26 Itw Mima-Europe Device for handling and maintenance of the free end of a film in a wrapping machine
US6164047A (en) * 1997-08-01 2000-12-26 Robopac, S.A. Method and device for cutting film used to wrap groups of products
US6195968B1 (en) * 1999-07-08 2001-03-06 Wulftec International Inc. Apparatus for wrapping a load

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204377A (en) * 1974-06-12 1980-05-27 Lantech, Inc. Process and apparatus for wrapping netting material around a load
US5452566A (en) * 1993-06-25 1995-09-26 Itw Mima-Europe Device for handling and maintenance of the free end of a film in a wrapping machine
US6164047A (en) * 1997-08-01 2000-12-26 Robopac, S.A. Method and device for cutting film used to wrap groups of products
US6195968B1 (en) * 1999-07-08 2001-03-06 Wulftec International Inc. Apparatus for wrapping a load

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004045950A1 (fr) * 2002-11-18 2004-06-03 Noxon S.R.L. Systeme et procede de devidage et de coupe automatiques de film etirable
US7347035B2 (en) 2002-11-18 2008-03-25 Noxon S.R.L. Assembly for automatically unrolling and cutting stretch film
EP4001133A3 (fr) * 2020-11-24 2022-08-03 Cousins Packaging, Inc. Bras rotatif pour machine d'emballage étirable
US11643230B2 (en) 2020-11-24 2023-05-09 Cousins Packaging Inc. Rotary arm for stretch wrapping machine

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