EP0081328A2 - Distributeurs de films d'emballage - Google Patents

Distributeurs de films d'emballage Download PDF

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Publication number
EP0081328A2
EP0081328A2 EP82306317A EP82306317A EP0081328A2 EP 0081328 A2 EP0081328 A2 EP 0081328A2 EP 82306317 A EP82306317 A EP 82306317A EP 82306317 A EP82306317 A EP 82306317A EP 0081328 A2 EP0081328 A2 EP 0081328A2
Authority
EP
European Patent Office
Prior art keywords
film
roller
rollers
stretch
roll
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Withdrawn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
EP82306317A
Other languages
German (de)
English (en)
Other versions
EP0081328A3 (fr
Inventor
Kenneth Stephen Eddin Orpen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0081328A2 publication Critical patent/EP0081328A2/fr
Publication of EP0081328A3 publication Critical patent/EP0081328A3/fr
Withdrawn legal-status Critical Current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
    • B65B67/00—Apparatus or devices facilitating manual packaging operations; Sack holders
    • B65B67/08—Wrapping of articles
    • B65B67/085—Wrapping of articles using hand-held dispensers for stretch films

Definitions

  • the present invention relates to improvements in packaging film dispensers, portable (i.e. hand operable) and otherwise, for wrapping objects with stretch film.
  • Stretch wrapping of objects such as pallet loads may involve costly motor-driven machinery.
  • the machinery includes controlled film feeding mechanism with involved constant speed motor drives, magnetic clutches and brake systems.
  • the present invention seeks to remedy these drawbacks.
  • a packaging film dispenser for wrapping objects with stretch film, comprising support means for rotationally receiving an upstanding roll of stretch film, dispensing means for withdrawing film from the roll, the dispensing means including a dispensing roller, an adjacent drive roller, and a carrier mounting the two rollers parallel'to each other and to a film roll when loaded in the dispenser, the carrier being movable to press the drive roller into frictional driving engagement with the film roll when film therefrom is drawn from the dispenser along a path passing around both rollers, and a drive transmission coupling the two rollers so that in operation the ratio of the peripheral speed of the dispensing roller to that of the drive roller exceeds unity so as to positively tension film longitudinally as it is dispensed.
  • the drive transmission is preferably a gear train for simplicity, although a chain and sprocket system, or a vee-belt and pulley system, could be chosen instead.
  • the said ratio whereby the peripheral speed of the dispensing roller exceeds that of the drive roller, can be of the order of 1.5:1.
  • the ratio can be varied to suit the particular film and its stretchiness.
  • rollers could be coupled by a 1:1 drive transmission, when their diameters will have to differ to achieve the desired speed ratio. Generally, however, the rollers will have the same diameter.
  • gear train transmission will be designed for a gear ratio approximately or exactly equal to the desired speed ratio.
  • the support means is furnished with ground-engaging rollers or wheels. It is found that such rollers or wheels considerably facilitate a pallet-wrapping operation.
  • apparatus for use in applying a stretch film wrapping to an object such as a loaded. pallet, comprising means for withdrawing stretchable film from a supply thereof and for conveying the film to a film dispensing means of the apparatus, means to stretch the film longitudinally in the course of its passage through the apparatus, and means to exert a pull on the film transversely of its length in the course of its said passage so as to confer a laterally stretch to the film dispensed from the apparatus.
  • the invention is applicable to automatic or semi-automatic wrapping machines as well as to hand wrapping tools.
  • the present invention can be embodied in a packaging film dispenser for manually wrapping objects with stretch film which comprises a handled support means for rotationally receiving an upstanding roll of stretch film, at least two dispensing rollers, and a carrier mounting the rollers parallel to each other and to a film roll when loaded on the dispenser, the carrier being movable to press one of the rollers into frictional driving engagement with the film roll when film therefrom is drawn from the dispenser along a path passing around the rollers, and a drive transmission coupling the rollers so that in operation the ratio of the peripheral speed of the or a dispensing roller downstream of the said one roller to that of the said one roller exceeds unity so as to positively tension film longitudinally as it is dispensed.
  • At least one of the dispensing rollers is furnished with the said lateral stretching means, preferably the last roller which the film encounters in the course of its passage from the apparatus.
  • the invention also provides a method of applying a stretch film wrapping to an object such as a loaded pallet, comprising the steps of attaching an end of the film to the object and winding the film around the object a plurality of times, while withdrawing the film from a supply thereof, the film being stretched longitudinally while it is dispensed from the supply to the object and also being concurrently stretched laterally.
  • the dispenser 10 shown in Fig. 1 has a handled support means on which a roll 11 of stretch film is- rotationally received.
  • the support means comprises a flanged base 12, provided with ground-engaging wheels or rollers 14 at one end thereof, an upstanding film roll mounting 16 and two handles 17, 18.
  • the mounting 16 is an upstanding tube or rod welded at its bottom end to the underside of the base 12.
  • Plastics spacer ferrules 20, 21 are loosely mounted on the tube or rod 16. These ferrules have smaller diameter portions to fit snugly within the core tube 22 on which the roll 11 is wound, and larger diameter flange portions generally the same diameter as the O.D. of the core tube 22.
  • the uppermost hand grip 18 is screw-threaded to the tube or rod 16. Once unscrewed and removed from the tube or rod 16, the dispenser can be dismantled appropriately for replacing an exhausted roll by a new roll 11.
  • the lower hand grip 17 is mounted on the free end of an upwards-extending curved arm 24.
  • Arm 24 is welded to the underside of the base 12. As shown, the arm 24 is curved through an angle of less than 90° (e.g. about 70°), so that its free end carrying hand grip 17 is located close to the roll 11. Sufficient space is provided between the roll 11 and the hand grip 17 for the user's hand to grasp the grip 17 without his knuckles fouling the roll 11.
  • first and second film-dispensing rollers 26, 28 are mounted adjacent the roll 11, and parallel thereto and to each other. These rollers are rotationally supported between two yokes 30, 31. To this end the rollers 26, 28 rotate on stationary shafts 32 affixed between the yokes 30, 31.
  • the yokes 30, 31 are apertured approximately mid-way between the shafts and are pivotable on an upstanding tube or rod 34 welded at its lower end to the base 12. At its upper end the tube 34 is held by a bracket 36 fitted detachably on the tube or rod 16 and normally secured in place sandwiched between the hand grip 18 and spacer 20.
  • the yokes 30, 31 and shafts 32 form a carrier, for the rollers 26, 28, which is pivotable about a vertical axis established by the tube 34.
  • the dimensions and geometry of the carrier allows one of the rollers to be pressed continuously against the roll 11 despite its progressively diminishing diameter as the film is dispensed therefrom.
  • roller 26 The roller which presses against roll 11 is roller 26. Thanks to a drive transmission 36 between the rollers 26, 28, roller 26 is rotated as film being dispensed from roll 11 passes over roller 28 and causes the latter to rotate. Frictional engagement between roller 26 and roll 11 drives the roll 11 in an unwinding or dispensing direction.
  • the preferred drive transmission 36 coupling the two rollers 26, 28 is a simple gear train. A chain and sprocket system, or a vee-belt and pulley system, could be utilised instead.
  • the driving arrangement is such that the peripheral speed of the dispensing roller 28 is always greater than that of the drive roller 26 (and of the film roll 11).
  • the gear ratio of the preferred gear train illustrated is determined by the ratio of the diameters of the rollers 26, 28 (where the diameters are unequal) and the desired percentage elongation or stretch tension required in the film.
  • the rollers 26, 28 have the same diameters.
  • a 1:1 drive transmission between the rollers ,26, 28 is permissible if roller 28 is appropriately larger than roller 26.
  • the gear train comprises two pinions 40, 41 each fast with a respective one of the rollers 26, 28.
  • the train has two idlers 42, 43.
  • Idler 42 is freely rotatable about the tube 34, while idler 43 is rotatably journalled on the lower yoke 31.
  • Pinion 40 and idler 42 meshing therewith possess the same number of gear teeth. This is true too for meshing pinion 41 and idler 43, although these have fewer teeth.
  • the idlers 42, 43 mesh with one another.
  • pinion 40 and idler 42 can have 28 teeth while pinion 41 and idler 43 have 18 teeth.
  • the gear ratio is thus 1.55:1 and hence as film is dispensed it is stretched longitudinally by 55%.
  • rollers.26, 28 rotate in opposite directions. Contra-rotation could, of course, be accomplished if the idlers were omitted and pinions 40, 41 meshed directly. However, the use of idlers 42, 43 facilitate design.
  • the dispenser 10 is loaded with a film roll 11 after removing top hand grip 18 and lifting off bracket 36 temporarily. Film is drawn from roll 11 and passed around the rollers 26, 28 following the dispensing path shown from above in Fig. 3A.
  • the film being dispensed is ' stretched longitudinally, e.g. by about 55%. Ordinarily this would cause a lateral contraction of the film. Reduction of the film width of course is reflected in the amount of film needed to wrap a stack of objects. Moreover, it is believed that natural relaxation of the film wrapping may account for some slackening which can endanger the security of a wrapped stack of objects.
  • the dispenser is provided with means which establish lateral stretching in addition to the longitudinal stretching.
  • the said means is associated with one or other or each of the dispensing rollers 26, 28, and operates to create a widthwise pull on the film as it is passing over the roller in question.
  • the lateral stretching means comprises twin helices 50, 51 of appropriately opposite hands of friction material, e.g. a synthetic rubber strip, forming ribs on the exterior of at least roller 28.
  • the rubber strip is bonded to the roller and, if the latter has a rubber surface, the rubbers can be secured by vulcanising together.
  • the pitch or pitches of the helix or helices is not too critical and can be found practically taking into account such factors as roller speeds envisaged, the degree of film-wrap around the roller(s), the desired amount of lateral stretching and the particular film to be used. Rollers having twin helices need not have the pitches identical.
  • both rollers 26, 28 possess helical friction windings, the helical pitch(es) on one need not be the same as the pitch(es) on the other.
  • the rubber strip may have a ribbed or otherwise contoured surface to increase the frictional grip exerted on the film as it is being laterally stretched.
  • roller(s) have rubber surfaces, then the helical friction windings could be moulded in situ as integral ribs thereon.
  • the dispensing rollers 26, 28 could possess smooth, low-friction surfaces if used in association with lateral stretching rollers formed as described above.
  • the film would be fed through a nip between the dispensing roller and its associated stretching roller. In such an arrangement, the rotation of the latter roller will be responsible for creating the lateral pull and will ease the film being stretched along the more slippery surface of the dispensing roll.
  • the lateral stretching can limit the overall widthwise contraction, by way of example to 85%.
  • the user when wrapping a loaded pallet for instance, the user first secures the free end of the film to the load.
  • the film may be tied to the pallet.
  • the user walks around the pallet, assuming the pallet is not resting on a turntable. As he proceeds around the pallet, film is paid off the dispenser 10 and automatically tensioned or stretched.
  • the amount of longitudinal stretch is determined by the velocity ratio of the drive transmission and is self-governing. Thus, the tension will not be affected by the speed with which the user attempts to wrap the loaded pallet. It will be appreciated that the tension in the film being dispensed pulls the roller 28 generally away from film roll 11. This pivots the carrier 30, 31 and 32 about tube 34 and presses roller 26 against roll 11. Thus a positive driving engagement with roll 11 is established with a concomitant braking effort which aids controlled'dispensing of film.
  • Fig. 4 functions in substantially the same manner as the embodiment already described.
  • the reference numbers used hitherto are employed in Fig. 4 for corresponding components.
  • the following description is directed to those aspects of dispenser 60 which differ from dispenser 10, to avoid unnecessary repetition.
  • the dispenser 60 has a substantially C-shaped, three sided frame 61 welded to the base 12.
  • Frame 61 has hand grip 17 on its upstanding side 62.
  • Upper side 63 of the frame 61 rotationally supports the upper ferrule 64 for entering the top end of the film roll core 22.
  • No central tube or rod extends from the upper ferrule 64 to the opposite lower ferrule 65 mounted rotationally on the base 12.
  • the upper ferrule 64 is movable upwardly against an opposing bias provided by coil spring 67, when removing an exhausted film roll core and replacing it by a new film roll 11. Since there is no central tube or rod equivalent to component 16 of the dispenser 10, loading the dispenser 60 is considerably eased.
  • the second hand grip 18 is mounted screw-threadedly on the top end of the tube or rod 34 which pivotally supports the roller carrier composed of the yokes 30, 31 and shafts 32.
  • the tube 34 at its lower end is apertured and mounted thereby between the rollers 14 on the roller axle.
  • the top end of the tube 34 is received in a slot 68 or forked end of the upper frame side 63 and is retained therein by the hand grip 18 being screwed down to side 63.
  • the ribs 50, 51 may wear and ultimately need replacing.
  • the rollers 26, 28 - or the unit including them, the yokes 30, 31 and the shafts 32 - is simply removed in this embodiment for replacement by an exchange unit after unscrewing the hand grip 18, and displacing the top end of the tube 34 from the slot or fork 68.
  • the bottom end of the tube 34 could embody a hook or slot 69 for detachably connecting it to the said axle when the hand grip 18 is loosened.
  • the removable unit would then include the tube 34.
  • the invention has been particularly described above in relation to an exemplary hand wrapping tool. It should be understood, however, that the invention is applicable to any hand tool or power machine for stretch wrapping, wherein the film is to be dispensed in at least a longitudinally- stretched state. For lateral stretching, all that is required is that such a tool or machine is furnished with a dispensing means capable of exerting a pull transversely of the film as it is being dispensed. The transverse stretching can be performed on the film before, after or at the same time as it is stretched longitudinally.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP82306317A 1981-12-07 1982-11-26 Distributeurs de films d'emballage Withdrawn EP0081328A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8136769 1981-12-07
GB8136769 1981-12-07
GB8213748 1982-05-12
GB8213748 1982-05-12

Publications (2)

Publication Number Publication Date
EP0081328A2 true EP0081328A2 (fr) 1983-06-15
EP0081328A3 EP0081328A3 (fr) 1984-03-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82306317A Withdrawn EP0081328A3 (fr) 1981-12-07 1982-11-26 Distributeurs de films d'emballage

Country Status (1)

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EP (1) EP0081328A3 (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2573059A1 (fr) * 1984-11-13 1986-05-16 Rassinoux Sa Appareil de devidage de film d'emballage
US4714210A (en) * 1986-06-23 1987-12-22 E. I. Du Pont De Nemours And Company Dispensing apparatus
DE8806949U1 (de) * 1988-05-27 1989-04-27 MSK - Verpackungs-Systeme GmbH, 4190 Kleve Vorrichtung zum Umwickeln eines insbesondere palettierten Gutstapels mit einer Kunststoffolienbahn
DE3815985C1 (en) * 1988-05-10 1989-11-02 Brega Verpackungsmaschinen-Anwendungstechnik Gmbh, 5884 Halver, De Apparatus for the production of a packaging unit
DE3813162A1 (de) * 1988-04-20 1989-11-02 Brega Verpackungsmaschinen Anw Maschine zur herstellung einer palettenpackung od. dgl.
EP0344815A1 (fr) * 1988-06-03 1989-12-06 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises, en particulier des piles de marchandises avec une housse de film étirable
EP0378550A1 (fr) * 1987-07-29 1990-07-25 First Green Park Pty Ltd Distributeur de feuilles d'emballage.
US5003752A (en) * 1988-05-16 1991-04-02 Ryozo Matsumoto Wrapping method and apparatus
US5036642A (en) * 1989-12-11 1991-08-06 Ford New Holland, Inc. Bale wrapping apparatus for round balers
US5103621A (en) * 1990-01-31 1992-04-14 Ryozo Matsumoto Film spreading device for use in wrapping apparatus
US5195296A (en) * 1991-08-09 1993-03-23 Ryozo Matsumoto Wrapping method
US5230193A (en) * 1992-06-04 1993-07-27 Ford New Holland, Inc. Net spreading apparatus for round baler
WO1994024034A1 (fr) * 1993-04-09 1994-10-27 Minnesota Mining And Manufacturing Company Appareil de distribution manuelle de ruban
FR2727075A1 (fr) * 1994-11-21 1996-05-24 F Mortelette Ets Dispositif roulant de banderolage helicoidal non automoteur a support de bobine mobile verticalement
EP0852279A2 (fr) * 1997-01-04 1998-07-08 Bavak Beveiligingsgroep B.V. Assemblage pour le stockage de papier monnaie dans un récipient, ainsi que récipient et boítier pour un tel récipient
WO1999001347A1 (fr) * 1997-07-02 1999-01-14 C.B. S.P.A. Dispositif portatif servant a emballer des charges dans un film extensible prealablement etire
WO1999065775A1 (fr) * 1998-06-19 1999-12-23 Marmions Limited Systeme d'emballage sous film etirable
EP0919467A3 (fr) * 1997-11-06 1999-12-29 Mima Incorporated Tête d'étirage pour film à enfilement rapide pour machine d'enveloppement et procédé d'enveloppement
EP1013549A1 (fr) 1998-12-23 2000-06-28 Maschinenfabrik Möllers GmbH u. Co. Procédé et dispositif pour envelopper une pile d'objets
US20110120056A1 (en) * 2008-08-08 2011-05-26 United Parcel Service Of America, Inc. Packaging tools
FR2986512A1 (fr) * 2012-02-08 2013-08-09 Geopack Ind Dispositif d'emballage destine a etre tenu a la main pour emballer des marchandises palettisees
EP3081501A1 (fr) * 2015-04-16 2016-10-19 Yu Chen Hsiu-Man Dispositif d'emballage à film
CN111017603A (zh) * 2018-10-09 2020-04-17 M·C·邬 便携式膜包装设备
DE102020116850A1 (de) 2020-06-26 2021-12-30 Erfurt & Sohn Kg Mobiles Tapetenabrollgerät
US11634246B2 (en) * 2019-12-06 2023-04-25 Ei Beheer B.V. Dispenser for stretch film

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828998A (en) * 1973-02-20 1974-08-13 F Gross Scroll roll
DE2923643A1 (de) * 1978-06-12 1979-12-20 John C Parry Vorrichtung zum aufbringen von kunststoff-streckfolien
GB2059906A (en) * 1979-09-12 1981-04-29 Lancaster W G A process and apparatus for wrapping loads in stretch films

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828998A (en) * 1973-02-20 1974-08-13 F Gross Scroll roll
DE2923643A1 (de) * 1978-06-12 1979-12-20 John C Parry Vorrichtung zum aufbringen von kunststoff-streckfolien
GB2059906A (en) * 1979-09-12 1981-04-29 Lancaster W G A process and apparatus for wrapping loads in stretch films

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2573059A1 (fr) * 1984-11-13 1986-05-16 Rassinoux Sa Appareil de devidage de film d'emballage
US4714210A (en) * 1986-06-23 1987-12-22 E. I. Du Pont De Nemours And Company Dispensing apparatus
EP0378550A1 (fr) * 1987-07-29 1990-07-25 First Green Park Pty Ltd Distributeur de feuilles d'emballage.
AU605345B2 (en) * 1987-07-29 1991-01-10 First Green Park Pty Ltd Film dispenser
EP0378550A4 (en) * 1987-07-29 1990-09-05 First Green Park Pty. Ltd. Film dispenser
DE3813162A1 (de) * 1988-04-20 1989-11-02 Brega Verpackungsmaschinen Anw Maschine zur herstellung einer palettenpackung od. dgl.
DE3815985C1 (en) * 1988-05-10 1989-11-02 Brega Verpackungsmaschinen-Anwendungstechnik Gmbh, 5884 Halver, De Apparatus for the production of a packaging unit
US5003752A (en) * 1988-05-16 1991-04-02 Ryozo Matsumoto Wrapping method and apparatus
DE8806949U1 (de) * 1988-05-27 1989-04-27 MSK - Verpackungs-Systeme GmbH, 4190 Kleve Vorrichtung zum Umwickeln eines insbesondere palettierten Gutstapels mit einer Kunststoffolienbahn
DE3918311A1 (de) * 1988-06-03 1989-12-07 Beumer Maschf Bernhard Verfahren und vorrichtung zum umhuellen von stueckgut, insbesondere stueckgutstapeln, mit einer stretchfolienhaube
EP0344815A1 (fr) * 1988-06-03 1989-12-06 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises, en particulier des piles de marchandises avec une housse de film étirable
US5036642A (en) * 1989-12-11 1991-08-06 Ford New Holland, Inc. Bale wrapping apparatus for round balers
US5103621A (en) * 1990-01-31 1992-04-14 Ryozo Matsumoto Film spreading device for use in wrapping apparatus
US5195296A (en) * 1991-08-09 1993-03-23 Ryozo Matsumoto Wrapping method
US5230193A (en) * 1992-06-04 1993-07-27 Ford New Holland, Inc. Net spreading apparatus for round baler
WO1994024034A1 (fr) * 1993-04-09 1994-10-27 Minnesota Mining And Manufacturing Company Appareil de distribution manuelle de ruban
FR2727075A1 (fr) * 1994-11-21 1996-05-24 F Mortelette Ets Dispositif roulant de banderolage helicoidal non automoteur a support de bobine mobile verticalement
EP0852279A2 (fr) * 1997-01-04 1998-07-08 Bavak Beveiligingsgroep B.V. Assemblage pour le stockage de papier monnaie dans un récipient, ainsi que récipient et boítier pour un tel récipient
EP0852279A3 (fr) * 1997-01-04 1998-09-30 Bavak Beveiligingsgroep B.V. Assemblage pour le stockage de papier monnaie dans un récipient, ainsi que récipient et boítier pour un tel récipient
WO1999001347A1 (fr) * 1997-07-02 1999-01-14 C.B. S.P.A. Dispositif portatif servant a emballer des charges dans un film extensible prealablement etire
EP0919467A3 (fr) * 1997-11-06 1999-12-29 Mima Incorporated Tête d'étirage pour film à enfilement rapide pour machine d'enveloppement et procédé d'enveloppement
WO1999065775A1 (fr) * 1998-06-19 1999-12-23 Marmions Limited Systeme d'emballage sous film etirable
US6713010B1 (en) 1998-06-19 2004-03-30 Marmions, Limited System for stretch-wrapping
EP1013549A1 (fr) 1998-12-23 2000-06-28 Maschinenfabrik Möllers GmbH u. Co. Procédé et dispositif pour envelopper une pile d'objets
EP1013549B1 (fr) * 1998-12-23 2003-04-16 Maschinenfabrik Möllers GmbH u. Co. Procédé et dispositif pour envelopper une pile d'objets
US20110120056A1 (en) * 2008-08-08 2011-05-26 United Parcel Service Of America, Inc. Packaging tools
US8578683B2 (en) * 2008-08-08 2013-11-12 United Parcel Service Of America, Inc. Method of distributing packaging material from a roll of material having a tubular core via a packaging tool
FR2986512A1 (fr) * 2012-02-08 2013-08-09 Geopack Ind Dispositif d'emballage destine a etre tenu a la main pour emballer des marchandises palettisees
EP3081501A1 (fr) * 2015-04-16 2016-10-19 Yu Chen Hsiu-Man Dispositif d'emballage à film
CN111017603A (zh) * 2018-10-09 2020-04-17 M·C·邬 便携式膜包装设备
US11518565B2 (en) 2018-10-09 2022-12-06 Ming Chu Voo Portable film packing apparatus
US11518566B2 (en) 2018-10-09 2022-12-06 Ming Chu Voo Portable film packing apparatus
CN111017603B (zh) * 2018-10-09 2023-07-18 M·C·邬 便携式膜包装设备
US11634246B2 (en) * 2019-12-06 2023-04-25 Ei Beheer B.V. Dispenser for stretch film
DE102020116850A1 (de) 2020-06-26 2021-12-30 Erfurt & Sohn Kg Mobiles Tapetenabrollgerät

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