CN102015253A - Apparatus for stretching film webs transversely - Google Patents

Apparatus for stretching film webs transversely Download PDF

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Publication number
CN102015253A
CN102015253A CN200980116058XA CN200980116058A CN102015253A CN 102015253 A CN102015253 A CN 102015253A CN 200980116058X A CN200980116058X A CN 200980116058XA CN 200980116058 A CN200980116058 A CN 200980116058A CN 102015253 A CN102015253 A CN 102015253A
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CN
China
Prior art keywords
clamp
guide rail
magnet
pulley
film band
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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.)
Pending
Application number
CN200980116058XA
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Chinese (zh)
Inventor
K·乌尔班奇克
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Filing date
Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of CN102015253A publication Critical patent/CN102015253A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/20Edge clamps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

In transverse stretching systems for film webs, tenter clips (1) run by way of running rollers (7) on guide rails (2). At relatively high working speeds, vibrations, noise, wear and friction losses occur. In order to avoid this, permanent magnets or electromagnets (8) are arranged on the tenter clip (1) or on the guide rail (2) in the region of the running rollers (7) in such a way that the tenter clip (1) is pulled towards the guide rail (2) in a defined direction. The running of the tenter clip (1) on the guide rail (2) is therefore stabilized and high working speeds can be achieved in apparatuses for stretching film webs transversely.

Description

The device that is used for cross directional stretch film band
The present invention relates to a kind of device that is used for cross directional stretch (Querrecken) film band (Folienbahnen).
In known cross directional stretch device, a large amount of clamps (Spannkluppe) are assembled to the clamp chain (Kluppenkette) of circulation for no reason, and this clamp chain is arranged on the both sides of film band along its length.By clamp under upborne temperature by cross directional stretch device handle thin films band, thereby and oriented film band.
This cross directional stretch device is for example described in DE 3703097.
Guide rail (clamp operates on this guide rail) has cross section rectangle, the directed in orthogonal direction usually.The whole guidance system that is used for the clamp chain is assembled with section bending by the straight on traffic direction, that tilt of a plurality of this guide rails in each side of film band.In the porch of cross directional stretch device, plastic sheeting is caught in edge in the both sides of film band by each row clamp, and is transferred by stretching device along its length.The guide rail that is used for the clamp chain that is arranged on both sides is configured to the certain zone at the cross directional stretch device here, and it is big that the interval of clamp chain becomes, and makes the film that is clamped in the clamp be stretched transverse to traffic direction.Clamp unclamps the film band in the exit of cross directional stretch device.This place is provided with the zone, and for no reason clamp chain is driven, turns to and taken back to starting point through another guidance system in this zone.
Clamp usually by matrix, be used for the clamping films band mechanism, be used to connect single clamp to the element of chain and be used for the pulley vertical and level guiding of clamp on guide rail and form.
The pulley that is used for the level guiding not only guides clamp on guide rail, bear the pulling force of film band in addition.This pulley usually mutually relatively is arranged to them with putting and is bearing on the vertical track of both sides of guide rail in matrix.Also can not tilt or motion uncontrollably in high-speed cruising and with this clamp of realizing packaging film feeding or not having a packaging film feeding at the bending section of guide rail.
Because inevitably the geometrical relationship in the bending section zone of tolerance and guide rail must take measures to stop the system that is made up of pulley of putting relatively and track to be blocked.This for example by make clear span between the pulley of mutually relatively putting be implemented as thickness than guide rail bigger realize.Promptly there is for example gap of 0.3mm to 0.5mm.
In the zone of cross directional stretch device (in this zone, the film band will point to the middle pulling force of cross directional stretch device transverse to traffic direction and be applied on the clamp), the pulley that is positioned at the outside of guide rail is crushed on the guide rail.In case clamp unclamps film, packaging film feeding disappears, and therefore clamp shows instability under deadweight and dynamic inertia force (it is occurring under higher clamp speed chain).
The system of this clamp, pulley and guide rail has for example been described in EP 0 471 052 B1.This place has also been described owing to the gap, in the wearing and tearing that occur under the higher fltting speed on vibration, noise and guide rail and the pulley.For fear of these shortcomings, suggestion will be adjustable transverse to traffic direction in EP 0 471 052 B1, the pulley of the level guiding that is used for clamp is pressed in guide rail by the lever system of complexity, makes the gap that exists in the prior art be reduced to zero all the time.This leverage mechanically is a high cost, causes the pulley of all clamps of mutually relatively putting to contact track all the time in addition under pretension, and thereby the contact between pulley bearings and pulley and guide rail in produce friction loss.
The system of the clamp that has pulley has been described in DE 195 15 036 A1, wherein stable by using damping element to obtain.
DE 195 10 141 C1 disclose a kind of pincer system of using linear motor.
Purpose of the present invention is that a kind of device that comprises clamp of realization wherein also can be realized vibration, noise, wearing and tearing and the friction loss of acceptable degree under higher operating rate on the cross directional stretch device.
According to the present invention, this purpose realizes by feature as claimed in claim 1.By appended claims and specification further advantageous embodiments of the present invention as can be known.
Foundation characteristic of the present invention is to be used to produce the magnetive attraction device, and whether it is arranged to clamp and for good and all is pulled to guide rail along the direction that limits on this device, exist irrelevant with packaging film feeding.
Favourable direction is that the packaging film feeding in the cross directional stretch process also works, and it is controlled to make when disconnected therein that in the fringe region of device the stressing conditions on the clamp continues, thereby and stablizes the operation of clamp on guide rail.
For example magnet positions is set at the regulating wheel place, wherein at regulating wheel when guide rail moves, between magnet and guide rail, have less spacing always---1mm for example.This spacing is the space, sets up magnetic field in this space between guide rail and magnet, and the clamp that the power in this magnetic field will have attached pulley pulls to guide rail.This guide rail must be made of the suitable magnetic material (for example steel) that those skilled in the art use always for this reason.Utilize available now high-performance magnetism body can obtain enough big power.The weight of typical clamp indicates the order of magnitude of required magnetic force, for example can be 6kg.This magnet must overcome gravity at least, and clamp does not tilt at guide rail when having packaging film feeding easily under the gravity effect.
When method was used magnet in the manner described, pulley (it is arranged to be positioned at magnet the same side of guide rail) contacted with guide rail always.The position of assembly is chosen to magnet and does not contact with guide rail herein.Because magnetic force, clamp is in operation and is stabilized, and pulley is not disengaged.Acceleration operation and inertia that therefore pulley does not take place yet rotate, and the result has reduced the wearing and tearing of pulley and guide rail.The pulley reality that is arranged at the guide rail opposite side does not in addition engage with guide rail or only engages with guide rail once in a while.Thereby be in embodiment in the pretension with respect to the pulley of all clamps, the friction loss of pulley reduces always.In case of necessity even can fully phase out pulley in a side of leaving magnet of guide rail.In general, the clamp of device according to the present invention in making the cross directional stretch device can show tangible progress in the effort with the higher production operation.
Advantageous embodiments of the present invention and further details are described below.
In known clamp, usually be provided with a plurality of adjacent and pulleys of putting (for example pulley to), be used for respect to the guide rail support clamp.Can use one or more this also folded mutually pulleys that are provided with right.When power is enough, single magnet can be set between two pulleys.If the power deficiency of magnet, also can on the traffic direction in before the pulley, afterwards and/or between a plurality of magnets are set.
Also can on the clamp in becoming masterpiece to be used on the clamp magnet arrangement below the guide rail perpendicular to the vertical directed downwards of film force direction.Consequently for good and all lean against on the guide rail, make the stable of the operation also realize clamp in vertical direction at the pulley that is arranged at above the guide rail on the clamp.
The definite fatefully magnetic force that is produced in space (in this space, setting up the magnetic field between magnet and the guide rail), thereby and definite power that clamp is pulled to guide rail.The space is more little, and magnetic force is big more.Must find technical reasonably in desirable less space and the median between the enough gaps between magnet and the guide rail aspect the magnetic.This gap is necessary, when having bending, tolerance or other irregular when guide rail, contacting of magnet and guide rail is not taken place.In order to reach the space of optimization, it is rational making the position of magnet on clamp adjustable.This can by bolt/nut combination and in case of necessity the slotted hole in the matrix of clamp realize.Also can use the adjusting device of the position that is used for this kind assembly that other those skilled in the art use always.
The wearing and tearing that occur mechanical component inevitably in service at this device.
Though, can not avoid wearing and tearing fully by using magnet according to the present invention to reduce this wearing and tearing (, and no longer alternately lean against or do not lean against on the guide rail) because pulley leans against on the guide rail with stable status.Metal filings can be attached on the magnet, and thereby the function that hinders device.
Therefore be necessary to be provided for cleaning the device of magnet.This device can for example be made up of one or more brushes, and this brush is arranged to magnet at the clamp chain brush that nuzzles up in service in the suitable position of guidance system, makes that the abrasive dust particle (Abriebpartikel) that may be bonded on the magnet is wiped.In order to realize this purpose, magnet is arranged to them and touches the brush that is arranged on the guide rail in the guide rail area that pulley does not roll across.Can replenish this device by the suction apparatus that is integrated in the guide rail, this suction apparatus is absorbed the foul that clings from brush and/or magnet.
Have the permanent magnet that in less installing space, also can produce very big power now for using.If this power is still not enough under special circumstances, also can use electromagnet.The clamp chain that comprises clamp additionally is equipped with electrical lead system (Stromzuleitungssystem) here, and (for example the guide rail) is supplied with electric current through Elastic Sliding contact (to similar the railway system) from fixing parts for it.
The magnet that is positioned on the clamp can be separated by electric control temporarily by this system, this has the easier advantage of wiping the abrasive dust particle that is bonded on the magnet by described brush.
Also can expect opposite setting, magnet wherein continuous, that become to be listed as is arranged in the guide rail, and clamp only has the corresponding magnetically opposition element (Gegenelement) of effect.This has simplified supply of electric power under the situation of using electromagnet.Need not to use slip ring, can be the magnet wiring regularly in the fixing guide rail.
The cleaning brush that is used to remove the abrasive dust of magnet row can be contained in clamp in this case.Suction apparatus is contained on the suitable position in the zone of guide rail on the contrary.The magnet row can for example be interrupted in this place on short section, make that brush is not through the operation of magnet place on short section, but through the operation of suction nozzle place.
Make the higher production of the cross directional stretch device that comprises clamp under acceptable vibration, noise, wearing and tearing and friction loss degree, become possibility by device according to the present invention.
Show by accompanying drawing below and clear in more detail embodiments of the invention.
Fig. 1 has shown the fragmentary, perspective view that comprises the device of clamp and guide rail according to of the present invention, and direction of observation is from the film band outside;
Fig. 2 has shown the perspective view of the clamp that does not have guide rail, and direction of observation is from film band inboard;
Fig. 3 has shown the clamp that comprises alternative magnet arrangement;
Fig. 4 has shown the device that comprises cleaning element and power supply;
Fig. 4 a has shown the part of Fig. 4;
Fig. 5 has shown the device that comprises the magnet in the guide rail.
Shown the device that comprises clamp 1 according to of the present invention in Fig. 1 and 2, this clamp 1 is bearing on the guide rail 2 by a plurality of pulley 7a, 7b, 7c.Pulley is installed on the matrix 4 of clamp for this reason.This clamp 6 is assembled into the clamp chain that circulates without rhyme or reason with a large amount of unshowned other clamps through the chain joint in the cross directional stretch device.Shown is that this film band 3 is conducted through the cross directional stretch device in the direction of arrows at the clamp (comprising guide rail) of a side of film band 3.Be symmetrical in the length direction of film based on the structure of the guidance system of clamp and guide rail.Promptly the opposite side that does not show at film band 3 also is provided with clamp and guide rail.
The film band is clamped in the clamp in film clamping device 5 with known method.Can be by unshowned operating means according to prior art open and close film clamping device 5.Pulley 7a is arranged to them and bears packaging film feeding on a side outward of guide rail.Magnet 8 stop clamps in not having the zone of packaging film feeding under their deadweight the inboard to guide rail tilt.The vertical guide of clamp is born by one or more pulley 7c that are installed in equally in the matrix 4.Paired, single, the single-row or biserial setting of pulley is depended on further to the indecisive parameter of the present invention.
Shown adjustment bolt 9 in Fig. 2 on magnet 8, this adjustment bolt 9 makes it possible to adjust along the direction on guide rail the position of magnet 8 through nut/locking nut-combination.In matrix, can additionally below magnet, be provided with the slotted hole of other set bolt when needed, to bear magnetic force more reliably.By this device the space between magnet 8 and the guide rail 2 can be adjusted very little, make between these two parts, still not produce contact, but produce big as far as possible magnetic force.
Can adapt to the setting of pulley according to the setting of magnet 8 of the present invention, as shown in Figure 3.
Magnet can be installed between two pulleys and/or be installed in the front and back of pulley on traffic direction.
The installation that magnet being used to below guide rail produces vertical force component can easily be drawn by this specification those skilled in the art, does not therefore illustrate separately.
Fig. 4 and 4a have shown the clamp 1 that comprises guide rail 2 and brush 10 and suction apparatus 11.This brush be installed in guide rail not by pulley roll across the section in.Magnet on matrix 4 is arranged on above or below the pulley in this case, promptly is arranged on outside the pulley and the contact zone between the guide rail that extends along the length direction of guide rail 2.
Fig. 4 has further exemplarily shown control system and electrical lead system 13,12, and the electric current that this system will be used for standby electromagnet conducts to guide rail 2.Conduct electrical currents to the electric current track 15 that the traffic direction along clamp on guide rail passes through by the circuit of lead-in wire 12 in guide rail 2, and not further that show, the spring-loading sliding-contact in clamp is delivered to electromagnet therefrom.Electric current track 15 be installed in pulley 7 track above or below.
In the controller 13 that is not shown specifically, on the time point that can adjust by the operator of device, interrupt carrying, so that by brush 10 and suction apparatus 11 cleaning magnets to the electric power of magnet.
Fig. 5 has shown the device among the opposite embodiment.Wherein become the magnet 8 of row to be arranged on the guide rail 2.On the matrix of clamp, alternatively be provided with magnetically the opposition element 14 of effect, its adjustment can with as carry out in the method similar methods that being used to described in Fig. 2 adjusted the space.Here brush 10 is fixed on the matrix 4 of clamp, thereby and brushes on magnet 8 always.Suction apparatus 11 exemplarily also is installed in the guide rail 2.It has breach in the ranks of magnet 8 at this.And magnet itself can be embodied as permanent magnet or electromagnet once more.Under the situation of using electromagnet, to supply of electric power 12 realizations of the electrical lead system through being connected in fixing guide rail of magnet 8 with controller 13.
Claims (according to the modification of the 19th of treaty)
1. device that comprises at least one clamp chain that is used for cross directional stretch film band, described clamp chain can be directed at least one guide rail (2) versatilely, described clamp chain comprises clamp (1), being used for the clamping device (5) of film band (3) and a plurality of pulley (7) is positioned at described clamp (1) and goes up and be arranged to pulley and can roll at guide rail (2), it is characterized in that, be provided with the device that is used to produce magnetic action power, this power pulls to guide rail (2) with clamp (1) along the direction that limits.
2. device according to claim 1 is characterized in that, the direction of described qualification and described film band (3) are consistent as the direction that the response of cross directional stretch is applied to the power on the clamp (1).
3. device according to claim 2 is characterized in that, the direction of described qualification also comprises the component that described clamp (1) is also pulled to guide rail (2) perpendicular to the direction of extension of film band (3).
4. according to each described device in the claim 1 to 3, it is characterized in that the described device that is used to produce magnetic action power comprises at least one magnet (8).
5. clamp that is used for the device that comprises at least one clamp chain of cross directional stretch film band, described clamp chain can be directed at least one guide rail (2) versatilely, described clamp chain comprises clamp (1), being used for the clamping device (5) of film band (3) and a plurality of pulley (7) is positioned at described clamp (1) and goes up and be arranged to pulley and can roll at guide rail (2), it is characterized in that
Be provided with the device that is used to produce magnetic action power, this power pulls to guide rail (2) with clamp (1) on the direction that limits, and
The described device that is used to produce magnetic action power comprises at least one magnet (8), and
Described at least one magnet (8) is installed on the matrix (4) of described clamp (1).
6. guide rail that is used for the device that comprises at least one clamp chain of cross directional stretch film band, described clamp chain can be directed at least one guide rail (2) versatilely, described clamp chain comprises clamp (1), being used for the clamping device (5) of film band (3) and a plurality of pulley (7) is positioned at described clamp (1) and goes up and be arranged to pulley and can roll at guide rail (2), it is characterized in that, be provided with the device that is used to produce magnetic action power, this power pulls to guide rail (2) with clamp (1) on the direction that limits, and
The described device that is used to produce magnetic action power comprises at least one magnet (8), and
Described at least one magnet (8) is arranged on the guide rail (2).
One kind comprise clamp according to claim 5 device, it is characterized in that the space of described magnet (8) can utilize adjusting device (9) to adjust.
8. a device that comprises guide rail according to claim 6 is characterized in that, the space of described magnet (8) can utilize adjusting device (9) adjustment.
9. according to each described device in claim 7 or 8, it is characterized in that, be provided with the cleaning device (10,11) that the abrasive dust particle is removed from described magnet.
10. device according to claim 9 is characterized in that, described cleaning device is made up of one or more brushes (10) and one or more suction apparatus (11).

Claims (11)

1. device that comprises at least one clamp chain that is used for cross directional stretch film band, described clamp chain can be directed at least one guide rail (2) versatilely, described clamp chain comprises clamp (1), being used for the clamping device (5) of film band (3) and a plurality of pulley (7) is positioned at described clamp (1) and goes up and be arranged to pulley and can roll at guide rail (2), it is characterized in that, be provided with the device that is used to produce magnetic action power, this power pulls to guide rail (2) with clamp (1) along the direction that limits.
2. device according to claim 1 is characterized in that, the direction of described qualification and described film band (3) are consistent as the direction that the response of cross directional stretch is applied to the power on the clamp (1).
3. device according to claim 2 is characterized in that, the direction of described qualification also comprises the component that described clamp (1) is also pulled to guide rail (2) perpendicular to the direction of extension of film band (3).
4. according to each described device in the claim 1 to 3, it is characterized in that the described device that is used to produce magnetic action power comprises at least one magnet (8).
5. device according to claim 4 is characterized in that, described at least one magnet (8) is installed on the matrix (4) of described clamp (1).
6. the clamp of a device according to claim 5.
7. device according to claim 4 is characterized in that, is provided with described at least one magnet (8) on described guide rail (2).
8. the guide rail of a device according to claim 7.
9. according to each described device in claim 5 or 7, it is characterized in that the space of described magnet (8) can utilize adjusting device (9) adjustment.
10. according to each described device in the claim 5,7 or 9, it is characterized in that, be provided with the cleaning device (10,11) that the abrasive dust particle is removed from described magnet.
11. device according to claim 10 is characterized in that, described cleaning device is made up of one or more brushes (10) and one or more suction apparatus (11).
CN200980116058XA 2008-04-30 2009-04-25 Apparatus for stretching film webs transversely Pending CN102015253A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008021506.6 2008-04-30
DE200810021506 DE102008021506A1 (en) 2008-04-30 2008-04-30 Device for transverse stretching of film webs
PCT/DE2009/000591 WO2009132632A1 (en) 2008-04-30 2009-04-25 Apparatus for stretching film webs transversely

Publications (1)

Publication Number Publication Date
CN102015253A true CN102015253A (en) 2011-04-13

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ID=40942521

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Application Number Title Priority Date Filing Date
CN200980116058XA Pending CN102015253A (en) 2008-04-30 2009-04-25 Apparatus for stretching film webs transversely

Country Status (5)

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EP (1) EP2296864A1 (en)
JP (1) JP2011518695A (en)
CN (1) CN102015253A (en)
DE (1) DE102008021506A1 (en)
WO (1) WO2009132632A1 (en)

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CN102294668A (en) * 2011-09-01 2011-12-28 江苏赛得机械有限公司 Plastic bidirectional tensile grid net clamp
CN102717511A (en) * 2012-06-19 2012-10-10 广州华新科实业有限公司 Biaxially oriented film binding-type horizontal stretching method and device
CN103395196A (en) * 2013-08-12 2013-11-20 桂林电器科学研究院有限公司 Magnetic control opening and closing clamp device of film stretching production line transverse tensile machine
CN103687714A (en) * 2011-06-10 2014-03-26 台斯尔技术公司 Clip for stretching a film
CN104162979A (en) * 2013-05-16 2014-11-26 安德里特斯股份公司 Dual tenter clip and table assembly and transverse sheet stretching plants comprising same
CN107457977A (en) * 2017-08-24 2017-12-12 王旭 A kind of horizontal drawing pincers

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JP5344705B2 (en) * 2010-03-24 2013-11-20 株式会社日立製作所 Sheet material drawing machine
DE102010023347A1 (en) 2010-06-10 2011-12-15 Brückner Maschinenbau GmbH & Co. KG Device for stretching horizontal bars of e.g. plastic film webs in transverse stretching equipment, has magnetic force relief device installed in such manner that gravity forces, radius supporting forces and acceleration forces act on clips
CN102765191B (en) * 2012-08-04 2014-04-23 青岛顺德塑料机械有限公司 Sliding base specially used for BOPET (biaxially-oriented polyethylene terephthalate) sheet
DE102017117420A1 (en) 2017-08-01 2019-02-07 Brückner Maschinenbau GmbH & Co. KG stretcher
DE102019127701A1 (en) 2019-10-15 2021-04-15 Brückner Maschinenbau GmbH & Co. KG Clip carriage for a transport chain arrangement of a stretching system and an associated stretching system

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US4050124A (en) * 1975-07-30 1977-09-27 Eastman Kodak Company Web stretching apparatus
JPS5761528A (en) * 1980-10-01 1982-04-14 Kobe Steel Ltd Stretching device of plastic film etc.
CN85108666A (en) * 1985-11-26 1987-06-03 普罗克特-施瓦茨有限公司 Stenter frame clip chain assembly
CN1061930A (en) * 1990-11-14 1992-06-17 帝国化学工业公司 A kind of manufacture method of film and equipment
CN1099696A (en) * 1993-09-01 1995-03-08 坂东化学株式会社 Method of and apparatus for widening film

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103687714A (en) * 2011-06-10 2014-03-26 台斯尔技术公司 Clip for stretching a film
CN102294668A (en) * 2011-09-01 2011-12-28 江苏赛得机械有限公司 Plastic bidirectional tensile grid net clamp
CN102717511A (en) * 2012-06-19 2012-10-10 广州华新科实业有限公司 Biaxially oriented film binding-type horizontal stretching method and device
CN102717511B (en) * 2012-06-19 2015-06-03 广州华新科实业有限公司 Biaxially oriented film binding-type horizontal stretching method and device
CN104162979A (en) * 2013-05-16 2014-11-26 安德里特斯股份公司 Dual tenter clip and table assembly and transverse sheet stretching plants comprising same
CN104162979B (en) * 2013-05-16 2017-04-12 布鲁克纳机械有限责任两合公司 Dual tenter clip and table assembly and transverse sheet stretching plants comprising same
CN103395196A (en) * 2013-08-12 2013-11-20 桂林电器科学研究院有限公司 Magnetic control opening and closing clamp device of film stretching production line transverse tensile machine
CN103395196B (en) * 2013-08-12 2015-12-16 桂林电器科学研究院有限公司 The magnetic control opening and closing clamp device of film stretching production line transverse stretching machine
CN107457977A (en) * 2017-08-24 2017-12-12 王旭 A kind of horizontal drawing pincers

Also Published As

Publication number Publication date
WO2009132632A1 (en) 2009-11-05
DE102008021506A1 (en) 2009-11-05
EP2296864A1 (en) 2011-03-23
JP2011518695A (en) 2011-06-30

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Application publication date: 20110413