EP3738913B1 - Verfahren und vorrichtung zum kontinuierlichen prozessieren einzelner oder mehrerer rovings - Google Patents

Verfahren und vorrichtung zum kontinuierlichen prozessieren einzelner oder mehrerer rovings Download PDF

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Publication number
EP3738913B1
EP3738913B1 EP20174227.7A EP20174227A EP3738913B1 EP 3738913 B1 EP3738913 B1 EP 3738913B1 EP 20174227 A EP20174227 A EP 20174227A EP 3738913 B1 EP3738913 B1 EP 3738913B1
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EP
European Patent Office
Prior art keywords
roving
splice
reserve
work
conveying direction
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.)
Active
Application number
EP20174227.7A
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German (de)
English (en)
French (fr)
Other versions
EP3738913A1 (de
Inventor
Sebastian Nendel
Marcel Meyer
Falk Mehlhorn
Falk Rahnefeld
Frank Hladik
Henry Neumann
Sonja Komso
Hans-Jürgen Heinrich
Nicola Chiusolo
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.)
Cetex Institut Ggmbh
Original Assignee
Cetex Institut Ggmbh
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Publication of EP3738913A1 publication Critical patent/EP3738913A1/de
Application granted granted Critical
Publication of EP3738913B1 publication Critical patent/EP3738913B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • B65H2701/311—Slivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • B65H2701/314—Carbon fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/38—Thread sheet, e.g. sheet of parallel yarns or wires

Definitions

  • the present invention relates to a method and a device for continuously processing single or multiple rovings.
  • Rovings are bundles, strands or multifilament yarns made from a large number of filaments running next to one another.
  • the rovings are on the one hand work rovings that run through the device and are processed, for example, into a fiber composite semifinished product, and on the other hand reserve rovings by which the work rovings are replaced or which are attached to the work rovings when the respective work rovings run out.
  • a splicing method and an associated device are known in which, prior to splicing, the two thread end parts are treated with a solvent or a solution for dissolving a sizing agent and then turned back pneumatically.
  • the pamphlet WO 2011/106523 A1 describes a carbon fiber cable splicing method and apparatus in which the filament ends are thinned by blades prior to splicing in order to obtain a fiber cable of uniform thickness.
  • the pamphlet DE 3528619 A1 discloses a splicing device in which the splice head is coupled to a controllable heat source so that heated splicing air is used for splicing.
  • a splicing device for connecting textile threads or yarns by means of compressed air is known to which a liquid is mixed.
  • the splicing chamber is arranged in a trough which can be tightly closed during the splicing process and from which a discharge line for the compressed air-liquid mixture proceeds.
  • the pamphlet DE 4226025 A1 contains a device for splicing multifilament yarns with two splice chambers arranged at a distance, each with its own fluid supply, the free space between the two splice chambers being filled with a foam body.
  • the pamphlet EP 2067730 B1 deals with an air splicing device for splicing glass fiber roving strands with two splice chambers arranged next to each other in a splice channel, each with its own independent compressed air supply and with outer strand clamps in front of and behind the two splice chambers and one or more strand clamps between the two splice chambers.
  • the splice strip with the reserve roving (s) fixed to it is brought into an alignment position in the alignment step in which the working roving (s) and the reserve roving (s) to be spliced with it are located (s) are parallel to each other.
  • the splice bar is moved in the alignment step with a support table, with at least one linear guide for at least one of the support table Splice unit parts is provided with which this at least one splice unit part is moved in the approach step and the withdrawal step.
  • the reserve roving (s) to be spliced is / are guided by means of reserve roving guide elements (s) provided upstream and downstream of the respective splicing unit in the main roving conveying direction.
  • the respective working roving (s) and the respective reserve roving (s) spliced therewith in the splicing position is / are clamped and in a separation step following the clamping step in this clamped position an end section of the respective working roving located in the main roving conveying direction after the respective splicing unit and an initial section of the reserve roving spliced with this working roving in front of the respective splicing unit in the main roving conveying direction are cut off.
  • a high degree of process purity is achieved if the roving ends of the working roving (s) and the reserve roving spliced therewith that remain on the working roving / reserve roving pair (s) are sucked off during and / or after the separating step.
  • the size can be broken up in a particularly suitable manner during the ongoing production process if the reserve roving (s) is / are pulled in an S-shaped path over several deflecting rollers that are offset from one another.
  • the working roving (s) and the reserve roving (s) pass through comb-shaped pre-splicing positioning units in the main roving conveying direction in front of the splice bar, the position of the working roving (s) and the reserve roving (s) is aligned in the width direction relative to the at least one splice unit of the splice bar.
  • one length of roving unwound from a work roving reel is detected and / or with at least one optical sensor coupled to a control device of the device at (one) unwinding point (s) of the work roving reel ( n) a winding status of the respective work roving coil (s) is monitored.
  • the reserve rovings are spliced simultaneously or in a cascade-like manner to the respectively assigned work rovings.
  • a first reserve roving guide element is moved from a position below the splice plane to a position above the splice plane and then moved in the width direction out of the splice plane.
  • the at least one splice unit is provided on a carrier table movable in the main roving conveying direction and the vertical direction of the device, and a linear guide is provided on the carrier table with which at least one of the splice unit parts can be moved in the width direction of the device.
  • At least one second and third reserve roving guide element for guiding the respective reserve roving between the splice unit parts of the respective splice unit is preferably provided in the main roving conveying direction before and after the respective splicing unit.
  • the reserve roving (s) is / are clamped particularly securely if at least one roving clamp opening and closing in the width direction of the device is provided in the main roving conveying direction before and after the respective splicing unit for clamping the respective reserve roving (s).
  • Roving clamp for clamping the respective working roving (s) in the main roving conveying direction is provided before and after the respective splicing unit at least one roving scissors cutting in the width direction or the vertical direction.
  • suction is provided on or above the splice strip.
  • a size breaking device for the reserve roving (s) is provided in the main roving conveying direction in front of the splice bar.
  • the size breaking device has a plurality of deflecting rollers arranged offset from one another.
  • comb-shaped pre-splice positioning units which can be moved in the width direction, are provided in front of the splice strip in the main roving conveying direction for guiding the working roving (s) and the reserve roving (s).
  • a comb-shaped end positioning unit for guiding the spliced roving is provided in the main roving conveying direction after the splice bar.
  • An embodiment of the device according to the invention preferably has at least one mechanical sensor coupled to a control device of the device, with which a roving length unwound from a work roving bobbin can be detected, and / or at least one optical sensor is provided at each unwinding point of the work roving bobbins, which is provided with a Control device of the device is coupled.
  • the working and reserve rovings are drawn off from a preferably electronically controlled creel, in which the winding of the working roving spool (s) is preferably monitored.
  • the entire device is braked from a basic speed, such as 25 m / min, to a splicing speed, such as 0.5 m / min.
  • a basic speed such as 25 m / min
  • a splicing speed such as 0.5 m / min.
  • the suction is then preferably switched on and the splicing process takes place.
  • the splice bar moves synchronously with the working roving (s) so that there is no delay between the respective working roving and the associated reserve roving.
  • the remnants of the work roving (s) are preferably rewound from the creel, the splice bar is moved into its basic position and the suction is switched off.
  • reserve roving (s) is / are then calibrated over the splice units of the splice strip.
  • the reserve roving (s), which will act as the new working roving (s), will then be accelerated to the basic speed of the device.
  • the sleeve (s) of the previous work roving (s) can be easily removed from the creel by an operator and (a) new roving sleeve (s) can be attached to the creel. Thereafter, it is advantageous if the end (s) of the new reserve roving (s) is / are pulled through a size breaking device, preferably an S-fold, whereby the size is broken up from the fiber filaments.
  • the reserve roving (s), such as, for example, a carbon fiber roving (s), can then be inserted into the splice strip, which is preferably moved out laterally, and fixed to it.
  • the splicing device can be positioned under the working roving (s) and the automatic roving change process is complete.
  • FIGS. 1 and 2 show schematically a splicing device 10 of an embodiment of the device 1 according to the invention in a side view and in a top view.
  • the splicing device 10 is described below with reference to a main roving conveying direction or working direction X of the device 1, a width direction Z of the device 1 oriented transversely to the main roving conveying direction X and a vertical direction oriented vertically to the XZ plane spanned by the main roving conveying direction X and the width direction Z Y of the device 1 described.
  • the splicing device 10 has a support table 2. Like it in Figure 1 As can be seen, the carrier table 2 can be moved in the vertical direction Y as well as in the width direction Z.
  • the support table 2 has at least one line 21.
  • the line guide 21 is aligned in the width direction Z of the device 1.
  • a first splicing unit part 31 of a splicing unit of the splicing device 10 is provided on the line 21 of the support table 2.
  • the first splice unit part 31 can be moved on the line guide 21 in the width direction Z of the device 1.
  • a second splice unit part 32 of the splice unit is provided on the support table 2.
  • the second splice unit part 32 can be moved with the support table 2.
  • the second splice unit part 32 is not movable relative to the carrier table 2.
  • the second splice unit part 32 is connected to a compressed air supply.
  • a suction device 9 is provided above the splice unit parts 31, 32.
  • the splicing device 10 has a plurality of splicing units arranged next to one another which, for example, have one in the Figures 3 and 4 Form the splice strip 30 shown of the device 1.
  • the splice bar 30 is aligned horizontally in the width direction Z of the device 1 lying 90 ° to the main roving conveying direction X.
  • the individual splice units of the splice bar 30 are constructed in the same way and function in the same way, so that the designs based on the Figures 1 and 2 to the splicing unit shown there, also apply to all further splicing units of the splicing device 10.
  • Several rovings can be spliced with the splice bar 30, which is described in more detail below. However, only a single roving can be spliced with the splice bar 30.
  • a first reserve roving guide element 41 is provided in the main roving conveying direction X in front of the carrier table 2 and thus also in front of the splicing unit.
  • the first reserve roving guide element 41 can be moved in the main roving conveying direction X and the vertical direction Y from a position below a splicing plane of the device 1 to a position above the splicing plane.
  • the first reserve roving guide element 41 can be moved out of the splice plane in the width direction Z of the device 1.
  • a second reserve roving guide element 42 is provided on the support table 2 in front of the splice unit and a third reserve roving guide element 43 after the splice unit for guiding a respective reserve roving 5 between the splice unit parts 31, 32 of the respective splice unit.
  • At least one third roving clamp 73, opening and closing in the vertical direction Y of the device 1, is provided for clamping the respective working roving (s).
  • At least one first and second roving clamp 71, 72 opening and closing in the main roving conveying direction X of the device 1 is provided for clamping the respective reserve roving 5.
  • At least one roving scissors 81 cutting in the vertical direction Y is provided in front of the respective splicing unit.
  • FIGS. 3 and 4 show schematically an embodiment of the device 1 according to the invention in a side view and in a top view.
  • the device 1 has a splicing device 10 with a splicing strip 30.
  • the splice strip 30 has six splice units which are constructed as described above.
  • the splice bar can also have only one splice unit or a different number of splice units.
  • splicings 6 from work roving spools 60 and reserve rovings 5 from reserve roving spools 50 are fed to splicing device 10 by a creel 56 provided in front of splicing device 10 in main roving conveying direction X.
  • the creel 56 of the embodiment shown is an automatically controlled creel with electronically controlled work roving spools 60 and reserve roving spools 50.
  • the creel 56 shown has six work roving spools 60 and six reserve roving spools 50.
  • a different number of unwinding units can also be used in other embodiments of the invention.
  • the bobbin creel 56 shown also has winding sensors that monitor the winding of the working roving bobbins 60 and the reserve roving bobbins 50.
  • control 92 of the creel 56 is located on a frame 91.
  • Two optical sensors 93 are attached as winding sensors to the last two opposite winding positions.
  • mechanical winding sensors can also be used.
  • the working rovings 6 and also the reserve rovings 5 are carbon fiber rovings or carbon fiber rovings, but in other embodiments of the present invention can also consist of a different material.
  • the carbon fiber rovings used in the embodiment of the invention shown are 50 k to 60 k carbon fiber rovings.
  • each side i.e. on the one hand the working roving spools 60 and on the other hand the reserve roving spools 50, is assigned non-displaceable initial positioning units 21, 22, each of which is followed by a guide roller 23, 24 per side.
  • the device 1 After the guide rollers 23, 24, the device 1 has pre-splicing positioning units 15, 16 in the main roving conveying direction X in front of the splicing device 10, over which the reserve rovings 5 and the working rovings 6 each run.
  • the pre-splice positioning units 15, 16 are each designed to be displaceable in the width direction Z of the device 1 and are comb-shaped. They serve to guide the reserve rovings 5 and the work rovings 6.
  • the displaceability of the pre-splice positioning units 15, 16 also serves to facilitate the insertion of new reserve rovings 5.
  • the device 1 has a size breaking device 18 for breaking up a size on the reserve rovings 5.
  • the size breaking device 18 has several deflecting rollers arranged offset to one another and thereby forms an S-lay. The roving ends of the reserve rovings 5 are pulled over the size breaking device 18 before splicing, the sizes being broken up on the carbon fiber rovings used here. This results in a better reproducibility of the splicing process.
  • a comb-shaped end positioning unit 17 is arranged in the device 1 in the main roving conveying direction X after the splicing device 10.
  • the work rovings 6 or, after splicing, the new work rovings 6 ′ formed from the former reserve rovings 5 run over the end positioning unit 17.
  • the alignment of the work rovings 6, 6 'with respect to the splicing units of the splicing device 10 is again calibrated.
  • the work rovings 6, 6' always run exactly over the splicing units of the splice bar 30 and thus enable the splicing process to be automated.
  • the end positioning unit 17 is followed by a calibrating guide roller 25.
  • the work rovings 6, 6 'then run into a processing system 20, which can be part of the device 1 according to the invention or is already a new device.
  • the device 1 also has further parts, not shown here.
  • the splice strip is in a set-up position.
  • the splice unit parts 31, 32 are spaced from one another and the roving clamps 71, 72, 73 are open.
  • the support table 2 has moved out of the XY splice plane in the width direction Z of the device 1.
  • the reserve rovings 5 to be spliced with the working rovings 6 are attached to the Splice bar 30 fixed.
  • the reserve rovings are placed in the splice strip 30, which is located below a splice level of the device 1 during the reserve roving fixing step, guided over the first, second and third reserve roving guide elements 41, 42, 43 and then by means of the roving clamps 71, 72 on the support table 2 fixed.
  • the reserve rovings 5 are fixed on the splice strip 30.
  • the support table 2 is in a waiting position below the splice level of the device 1. In this waiting position, the support table 2 does not move.
  • the first and second roving clamps 71, 72, with which the reserve rovings 5 are clamped between the splice unit parts 31, 32, are closed.
  • the third roving clamp 73 is in an upper position, that is not closed.
  • the roving scissors 81 is open and is in an upper position.
  • the roving cutter 82 is open.
  • the first reserve roving guide element 41 is located in a Figure 1 basic position to be seen.
  • the first splice unit part 31 is offset with respect to the second splice unit part 32 in the width direction Z of the device 1.
  • the supply of compressed air to the splice unit part 32 is switched off.
  • the suction 9 is switched off.
  • the optical sensors 93 report no signal.
  • the corresponding sensor 93 If one or more of the optical sensors 93 determine that the winding of one or more work roving bobbins 60 is no longer sufficient, the corresponding sensor 93 outputs a signal to the control device 92 of the device 1.
  • the control device 92 then brakes the corresponding working roving (s) 6 in a braking process down to a splicing speed.
  • the splicing speed is 0.5 m / min. In other variants of the method according to the invention, the splicing speed can also have a different level.
  • the carrier table 2 is then moved in an alignment step into a splice position in an X-Y splice plane of the device 1.
  • the support table 2 is accelerated to the splicing speed. That is, the support table 2 with the splice units and the clamped reserve rovings 5 moves synchronously with the working rovings 6.
  • the reserve rovings 5 to be spliced with the expiring working rovings 6 are unwound from the corresponding reserve roving spools 50.
  • the size of the reserve rovings 5 is broken up before splicing by pulling the reserve rovings over the size breaking device 18.
  • the splice connection is then made in a roving connection process.
  • the first splice unit part 31 is first placed against the second splice unit part 32 in an approach step in the width direction Z of the device 1.
  • Compressed air is then fed to the second splicing unit part 32 in a splicing step for a splicing time of approximately 3 seconds.
  • the suction 9 is switched on here.
  • the work rovings 6 and the reserve rovings 5 are processed continuously. The device does not stand still.
  • the reserve rovings 5 are connected to the working rovings 6 without stopping the production process.
  • the connection of the several reserve rovings 5 to the corresponding work rovings 6 can take place simultaneously or in a cascade manner.
  • the reserve rovings 5 are preferably, but not necessarily, tied to the corresponding work rovings 6 in one plane.
  • the compressed air supply to the second splicing unit part 32 is switched off.
  • the suction 9 initially remains switched on.
  • the sensor (s) 93 assigned to the original work roving 6 is / are deactivated, and the sensor (s) 93 assigned to the new work roving 6 ′ that has emerged from the previous reserve roving 5 is / are activated.
  • the corresponding former reserve roving spool 50 continues to unwind.
  • the roving ends on the spliced working roving / reserve roving pairs are separated in a separating step.
  • the third roving clamp 73 is brought into a lower position and thereby closed.
  • the third roving clamp 73 clamps both the working roving 6 and the associated reserve roving 5 in this closed position.
  • the roving shears 82 are closed.
  • the roving shears 81 is also brought into the cutting position. The respective roving ends are cut off. The cutting residues are sucked off by the suction device 9.
  • the first splicing unit part 31 is moved away from the second splicing unit part 32 in the width direction Z of the device 1 and is thereby returned to its starting position.
  • the previous work roving spool 60 winds up the remainder of the previous work roving 6 and stops.
  • the roving ends are released in a release process.
  • all of the roving clamps 71, 72, 73 and also the roving shears 81, 82 are opened.
  • the support table 2 is still in the splicing position.
  • the new working roving 6 ′ that has emerged from the reserve roving 5 moves through the device 1 at the splicing speed.
  • the first reserve roving guide element 41 is then moved away from the basic position.
  • the first reserve roving guide element 41 moves at an angle from 60 ° to the main roving conveying direction X to a position below the splice plane and is removed in the width direction Z of the device 1.
  • the suction 9 is switched off.
  • the first reserve roof guide element 41 is reset to its basic position opposite to the width direction Z of the device 1.
  • the carrier table 2 is then moved back into the set-up position in which all the roving clamps 71, 72, 73 and the roving scissors 81, 82 are open and the splice unit parts 31, 32 are offset from one another.
  • an operator of the device 1 removes the old working roving bobbins 60 from the creel 56, attaching new reserve roving bobbins 50 to these locations on the creel 56 and inserting new reserve roving 5 into the splice bar 30.
  • the carrier table 2 is then moved back to the waiting position.

Landscapes

  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
EP20174227.7A 2019-05-14 2020-05-12 Verfahren und vorrichtung zum kontinuierlichen prozessieren einzelner oder mehrerer rovings Active EP3738913B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019112554.5A DE102019112554B4 (de) 2019-05-14 2019-05-14 Verfahren und Vorrichtung zum kontinuierlichen Prozessieren mehrerer Rovings

Publications (2)

Publication Number Publication Date
EP3738913A1 EP3738913A1 (de) 2020-11-18
EP3738913B1 true EP3738913B1 (de) 2021-06-23

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Application Number Title Priority Date Filing Date
EP20174227.7A Active EP3738913B1 (de) 2019-05-14 2020-05-12 Verfahren und vorrichtung zum kontinuierlichen prozessieren einzelner oder mehrerer rovings

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Country Link
EP (1) EP3738913B1 (es)
DE (1) DE102019112554B4 (es)
ES (1) ES2889426T3 (es)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
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DE3114790A1 (de) * 1981-04-11 1982-10-28 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum herstellen einer knotenlosen fadenverbindung durch spleissen
DE3336202A1 (de) * 1983-10-05 1985-04-25 Textechno Herbert Stein GmbH & Co KG, 4050 Mönchengladbach Verfahren und vorrichtung zur verbindung fadenfoermiger materialien
DE3528619A1 (de) * 1985-08-09 1987-02-19 Schlafhorst & Co W Vorrichtung zum herstellen einer fadenverbindung durch spleissen
DE3629735A1 (de) * 1986-09-01 1988-03-03 Gregor Gebald Verfahren zum anschliessen des fadenanfangs einer vorratsspule an das ende eines laufenden fadens
BE1000378A4 (nl) * 1987-03-13 1988-11-16 Picanol Nv Werkwijze voor een kontinue draadtoevoer vanaf voorraadspoelen en inrichting die deze wekwijze toepast.
IT1223431B (it) * 1987-12-14 1990-09-19 Mesdan Spa Apparecchio di impiombatura con aria compressa addizionata di un liquido per la giunzione di fili o filati tessili
JPH01214586A (ja) * 1988-02-24 1989-08-28 Murata Mach Ltd 糸継装置における糊付糸の解撚方法
DE3937824A1 (de) * 1989-11-14 1991-05-16 Schlafhorst & Co W Spulstelle einer spulmaschine, bei der das fadenverbinden und der kopswechsel automatisch durchfuehrbar sind
DE4116194B4 (de) * 1991-05-17 2004-09-09 Sucker-Müller-Hacoba GmbH & Co Vorrichtung zum Verbinden von Kettbahnen beim Zettelbaumpartiewechsel
DE4226025C2 (de) * 1991-09-19 1996-10-24 Akzo Nobel Nv Vorrichtung zum Spleißen von Multifilamentgarnen
JP3346358B2 (ja) * 1999-11-26 2002-11-18 株式会社豊田自動織機 繊維束及び繊維束の製造方法、繊維束の接合方法並びに繊維束接合装置
US7093638B2 (en) * 2003-04-21 2006-08-22 Lignum Vitae Limited Apparatus and method for manufacture and use of composite fiber components
EP1757434B1 (en) * 2005-08-25 2014-12-17 Ingersoll Machine Tools, Inc. Replaceable creel in a fiber placement machine
ES2324575B1 (es) * 2007-02-22 2010-04-19 Manuel Torres Martinez Empalmador de tiras de fibra para maquinas de encintado.
DE602007006678D1 (de) * 2007-12-04 2010-07-01 Johns Manville Europe Gmbh Luftspleißvorrichtung zum Spleißverbinden von zwei Vorgarnbündel aus Glasfasern und Verfahren zum Spleißverbinden derselben
MX2012001125A (es) * 2009-07-29 2012-02-23 Ppg Ind Ohio Inc Mechas de fibra de vidrio empalmadas y procedimientos y sistemas para empalmar mechas de fibra de vidrio.
US9193559B2 (en) * 2010-02-26 2015-11-24 Zoltek Companies, Inc. Spliced carbon fiber tow and splicing method

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Publication number Publication date
EP3738913A1 (de) 2020-11-18
DE102019112554B4 (de) 2020-12-17
ES2889426T3 (es) 2022-01-12
DE102019112554A1 (de) 2020-11-19

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