EP3285996B1 - Dispositif de chauffage, comprenant deux plaques chaudes en forme d'arc disposées en amont, d'une machine bilatérale - Google Patents

Dispositif de chauffage, comprenant deux plaques chaudes en forme d'arc disposées en amont, d'une machine bilatérale Download PDF

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Publication number
EP3285996B1
EP3285996B1 EP16707042.4A EP16707042A EP3285996B1 EP 3285996 B1 EP3285996 B1 EP 3285996B1 EP 16707042 A EP16707042 A EP 16707042A EP 3285996 B1 EP3285996 B1 EP 3285996B1
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EP
European Patent Office
Prior art keywords
corrugated
corrugated cardboard
hot plate
sided machine
arcuate
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.)
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Application number
EP16707042.4A
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German (de)
English (en)
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EP3285996A1 (fr
Inventor
Thomas Hecky
Norbert Städele
Gerald FRISCHOLZ
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.)
BHS Corrugated Maschinen und Anlagenbau GmbH
Original Assignee
BHS Corrugated Maschinen und Anlagenbau GmbH
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Publication of EP3285996A1 publication Critical patent/EP3285996A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/285—Heating or drying equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2813—Making corrugated cardboard of composite structure, e.g. comprising two or more corrugated layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/2872—Spraying devices, e.g. for moistening purposes; Lubricating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/2877—Pressing means for bringing facer sheet and corrugated webs into contact or keeping them in contact, e.g. rolls, belts
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates

Definitions

  • the present invention relates to a machine, in particular with a corrugated cardboard processing device, and in particular with a heating device, comprising two upstream arc-shaped hot plates, a two-sided machine, according to the preamble of claim 1.
  • the two-sided machine is equipped with a long heating device for heating the corrugated cardboard and for maintaining a bondability of the glue. Because of the relatively large length of the heating device, it takes a long time for the corrugated cardboard to pass through it, which leads to a reduced production speed and unsatisfactory productivity. As a result, the entire arrangement is relatively bulky.
  • One from the WO 87/05062 A1 Known heating device has curved heating plates for heating a paper web guided over it.
  • the DE 195 06 777 A1 discloses a device for producing corrugated cardboard.
  • the device comprises a glue unit with preheating devices on the input side.
  • the preheaters can be curved, heated segments.
  • the EP 1 459 878 A2 discloses a corrugated cardboard system with a gluing unit and a heating pressure device arranged behind the gluing unit, which has a table with heating plates.
  • the present invention has for its object to provide a heating device which comprises two upstream arc-shaped hot plates double-sided machine, which is designed to solve the problems in the prior art that the length of the heater of a double-sided machine is long, the production speed is low, and the productivity is unsatisfactory.
  • the heating device which comprises two upstream, arc-shaped hot plates of a two-sided machine according to the invention, has a frame, wherein a first arc-shaped hot plate with a first heat-conducting plate element is arranged in the frame, which has an arc shape in cross section and in which a heating means or Heating medium is provided.
  • the frame has a wall on which a sleeve is provided.
  • a second arc-shaped hot plate is arranged above the first arc-shaped hot plate and comprises a second heat-conducting plate element which has an arc shape in cross section and in which a heating medium or heating medium is provided.
  • the center or leading end of the second arcuate hot plate is connected to the sleeve via a connecting shaft, a pair of rotations being formed between the second arcuate hot plate and the sleeve.
  • a cylinder unit is arranged in the frame, the piston rod of which is connected to the trailing end of the second arc-shaped hot plate via a connecting rod.
  • the hot plates form a heating device of the touching shape.
  • Corrugated cardboard layers to be heated are in direct contact or in direct heat-conducting connection with the heating device during operation, in particular the glue for connecting the corrugated cardboard layers is heated together, but remains unaffected or is not affected.
  • the corrugated cardboard layers slide along the hot plates at least in regions during operation of the heating device and are thereby heated.
  • the two-sided machine is designed in particular as a heating and pulling section. It advantageously has at least one pressure element and at least one table arranged adjacent to it. A pressure gap is formed between the at least one pressure element and the at least one table, through which the layers of corrugated cardboard are guided and are firmly connected to one another in layers to form a multilayer corrugated cardboard. There is an upstream gluing point at which the corrugated cardboard layers are compressed, in particular for the first time.
  • the at least one pressure element is preferably a circumferential pressure band for pressing the corrugated cardboard layers against one another in the pressure gap.
  • One or more second hot plates can be present. This is particularly dependent on the number of layers of the finished corrugated cardboard.
  • the second hot plates are then advantageously arranged at different heights, so that, for example, an upper second and lower second and optionally a middle second hot plate are provided.
  • the heating device can therefore comprise a total of more than two hot plates.
  • the numerical values specified in particular in the claims and in the description with respect to the hot plates are consequently minimum or minimum values.
  • the first and / or the at least one second hot plate is hot or heated during operation of the heating device.
  • a fluid, in particular steam, is advantageously used as the heating means.
  • electrical heating takes place, for example.
  • the first and / or second hot plate advantageously has a circular arc shape or essentially an arc shape in cross section. Other bow shapes are possible. It is useful if the first and / or second hot plate is made in one piece.
  • the sleeve provided on the wall is understood in particular to mean a part which envelops a space or object at least in regions.
  • the sleeve can have any contour, such as a circular or polygonal contour.
  • the sleeve is designed as a carrier, which is designed for example as an angle, bar or the like.
  • a sleeve is advantageously assigned to every second hot plate.
  • the wall is formed, for example, by a surface, a plate element or the like. It can be flat or uneven.
  • the frame is, for example, bar-shaped or frame-like.
  • the connecting shaft is designed, for example, as a connecting shaft.
  • the cylinder unit advantageously comprises a cylinder, a piston which is displaceably guided in the cylinder and a piston rod which is fixedly connected to the piston.
  • the cylinder unit preferably also has a connecting rod, which is then connected, in particular more firmly, to the piston rod.
  • the piston rod preferably protrudes from the cylinder.
  • the cylinder unit can be actuated or adjusted. It preferably works pneumatically or hydraulically. Alternatively, an electrical control unit is provided.
  • a cylinder unit is advantageously assigned to every second hot plate.
  • the distance between a preheating device and the two-sided machine is extremely long in the prior art, which in this free draft leads to a not inconsiderable temperature loss of the corrugated cardboard layers heated in the preheating device until the two-sided machine is reached.
  • the first heat-conductive plate member and the second heat-conductive plate member are provided at a paper inlet of the two-sided machine.
  • the corrugated cardboard layers enter the two-sided machine via the paper inlet in order to produce the corrugated cardboard having at least three layers.
  • the corrugated cardboard advantageously comprises a first corrugated cardboard layer, a second corrugated cardboard layer and a third corrugated cardboard layer.
  • the corrugated cardboard layers are advantageously endless or web-like. The same applies to the finished corrugated cardboard.
  • the first corrugated cardboard layer is advantageously formed by a smooth lamination layer.
  • the second corrugated cardboard layer advantageously comprises a smooth second cover layer and a second corrugated layer, which are connected to one another in layers by means of a glue layer.
  • the third corrugated cardboard layer advantageously comprises a smooth third cover layer and a third corrugated layer, which are connected to one another in layers by a layer of glue.
  • a three-ply or seven-ply corrugated cardboard is formed in the two-sided machine.
  • each of the first thermally conductive plate member and the second thermally conductive plate member is provided with two or more heating lines spaced along the extension direction of the arc, the axial direction of each heating line being parallel to the longitudinal direction of the first thermally conductive plate member and the second thermally conductive plate member, and the heating cables contain a heating medium.
  • the sleeve is connected to the wall by means of screws which pass through elongated holes provided in the sleeve.
  • a fine adjustment means for manually adjusting the position of the sleeve is arranged below the sleeve and provided in the frame.
  • the principle of operation of the present invention is as follows: the first arcuate hot plate and the second arcuate hot plate are provided at the paper inlet end of the two-sided machine; a second layer of corrugated cardboard and a first layer of corrugated cardboard are guided to run between the second arcuate hot plate and the first arcuate hot plate, while a third corrugated cardboard layer is guided to run above the second arcuate hot plate.
  • the second sheet-like hot plate is lowered by using the cylinder unit to come into contact with the second sheet of corrugated cardboard, the heat within the second sheet-like hot plate being transferred quickly to the second sheet of corrugated cardboard and simultaneously to the glue on the underside the third corrugated cardboard layer is transferred, while the heat within the first arc-shaped hot plate is transferred to the glue under the second corrugated cardboard layer via the first corrugated cardboard layer so that the glue can reach a temperature such that it is possible to achieve optimal binding ability before the first one is bound Corrugated cardboard layer, the second corrugated cardboard layer and the third corrugated cardboard layer, wherein a multilayer corrugated cardboard with high quality is dispensed when the first corrugated cardboard layer, the second corrugated cardboard layer and the third corrugated cardboard layer are correctly connected.
  • the degree of bonding between the second arcuate hot plate and the second sheet of corrugated cardboard can be finely adjusted by the fine adjustment means for manually adjusting the position of the sleeve provided below the sleeve to ensure that the second layer of corrugated cardboard can receive the maximum amount of heat .
  • the second sheet-like hot plate is quickly removed from the surface of the second corrugated cardboard layer through the connecting rod of the cylinder unit to prevent excessive heat from damaging the bonding ability of the glue.
  • two arcuate hot plates ie an upper and lower hot plate
  • a second layer of corrugated cardboard and a first layer of corrugated cardboard are guided to run between the second arcuate hot plate and the first arcuate hot plate, while a third layer of corrugated cardboard is guided to run above the second arcuate hot plate
  • the second arc-shaped hot plate is lowered by using the cylinder unit to come into contact with the second corrugated cardboard layer so that the glue can reach a temperature such that it is possible to achieve optimal binding ability before the first corrugated cardboard layer, the second corrugated cardboard layer and the to obtain the third corrugated sheet, whereby a high quality multi-layer corrugated sheet is discharged through the first corrugated sheet, the second corrugated sheet and the third corrugated sheet at the paper outlet end of the two-sided machine. So production speed and productivity are improved and the inherent heating medium
  • the free unheated length of the corrugated cardboard layers heated by the, in particular at least one second, hot plate / s is extremely short up to the initial gluing point of the two-sided machine, so that along this unheated length there is essentially no temperature loss at the / the corrugated cardboard layer / s occur.
  • the distance of the hot plates along the corrugated cardboard layers to the initial gluing point according to claim 7 can be identical or different.
  • the second hot plate has the specified distance.
  • the saturated steam temperature of the at least one corrugated cardboard saturated steam generating device is advantageously adjustable according to claim 8 or 9.
  • the amount of saturated steam of the at least one corrugated saturated steam generating device is preferably adjustable. It is expedient if a wetting width of the at least one corrugated saturated steam generation device can be set.
  • the at least one corrugated saturated steam generating device is arranged, for example, directly on the respective second hot plate, preferably at its upstream end. Alternatively, this is arranged upstream of the respective second hot plate and can advantageously be displaced in height relative to the latter.
  • the at least one saturated corrugated cardboard steam generating device is advantageously able to apply steam directly or indirectly to the respective corrugated cardboard layer.
  • the steam / water temperature of the at least one corrugated steam / water spray device according to claim 10 or 11 is adjustable.
  • the amount of steam / water of the at least one corrugated cardboard steam / water spraying device is preferably adjustable. It is expedient if a wetting width of the at least one corrugated cardboard steam / water spraying device can be set.
  • each corrugated steam / water spraying device is arranged downstream of the corrugated saturated steam generation device of the corresponding corrugated sheet. It is advantageous if the corrugated cardboard steam / water spraying device and the corrugated cardboard saturated steam generating device of the respective corrugated cardboard layer are arranged adjacent to one another.
  • the heating device which comprises two upstream arc-shaped hot plates
  • a double-sided machine comprises a frame 1, in which a first arc-shaped hot plate 2 is arranged, which comprises a first heat-conducting plate element with an arc cross-section, with a heating means in the first heat-conducting plate element is located.
  • a wall 3 on which a sleeve 4 is provided.
  • a second arc-shaped hot plate 5 is provided above the first arc-shaped hot plate 2 and comprises a second heat-conducting plate element with an arc cross-section, a heating medium being located in the second heat-conductive plate element.
  • the middle or the leading end of the second arc-shaped hot plate 5 is connected to the sleeve 4 via a connecting shaft, a pair of rotations being formed between the second arc-shaped hot plate 5 and the sleeve 4.
  • a cylinder unit 6 is arranged in the frame 1, the piston rod of which is connected to the trailing end of the second arcuate hot plate 5 via the connecting rod 7.
  • the first heat-conducting plate element is provided at the paper inlet of the two-sided machine.
  • each of the first thermally conductive plate member and the second thermally conductive plate member two or more heating lines are further provided at intervals along the extension direction of the arc, the axial direction of each heating line being parallel to the longitudinal direction of the first thermally conductive plate member and the second thermally conductive plate member, and the heating lines contain a heating medium.
  • the sleeve 4 is connected to the wall 3 by means of screws which run through elongated holes provided in the sleeve 4.
  • the principle of operation of the present invention is as follows: the first arcuate hot plate 2 and the second arcuate hot plate 5 are provided at the paper inlet end of the two-sided machine 9; a second corrugated cardboard layer 11 and a first corrugated cardboard layer 12 are guided to run between the second arcuate hot plate 5 and the first arcuate hot plate 2, while a third corrugated cardboard layer 10 is guided to run above the second arcuate hot plate 5.
  • the second arcuate hot plate 5 is lowered by using the cylinder unit 6 to come into contact with the second corrugated cardboard layer 11, the heat within the second arcuate hot plate 5 being rapidly transferred to the second corrugated cardboard layer 11 and simultaneously is transferred to the glue on the underside of the third corrugated cardboard layer 10, while the heat within the first arc-shaped hot plate 2 is transferred to the glue under the second corrugated cardboard layer 11 via the first corrugated cardboard layer 12 so that before the third corrugated cardboard layer 10, the second corrugated cardboard layer 11 and the first corrugated cardboard layer 12 are bonded, the glue can reach such a temperature that it is possible to obtain optimal binding ability, and a multi-layer corrugated cardboard 13 of high quality is dispensed, if the third corrugated cardboard layer 10, the second corrugated cardboard layer 11 and the first corrugated cardboard layer 12 are connected correctly.
  • the degree of binding between the second arcuate hot plate 5 and the second corrugated cardboard layer 11 can be fine-tuned by the fine adjustment means 9 for manually adjusting the position of the sleeve 4 provided below the sleeve 4 to ensure that the second corrugated cardboard layer 11 can receive the maximum amount of heat.
  • the second arcuate hot plate 5 is quickly removed from the surface of the second corrugated cardboard layer 11 by the connecting rod 7 of the cylinder unit 6 to prevent excessive heat from damaging the bonding ability of the glue.
  • a corrugated cardboard production line like in Fig. 3 partially shown, is used to produce a seven-layer corrugated cardboard 13a with a first corrugated cardboard layer 12 and two second corrugated cardboard layers 11 and a third corrugated cardboard layer 10.
  • the second corrugated cardboard layers 11 are of identical design.
  • the second and third corrugated cardboard layers 11, 10 are each in two layers, while the first corrugated cardboard layer 12 is in one layer.
  • the corrugated cardboard production line has a first splicing device 14 for producing the first corrugated cardboard layer 12.
  • the corrugated cardboard production line has two second corrugated cardboard production devices 15, 16 for producing the two second corrugated cardboard layers 11, each of which is of identical design.
  • the corrugated cardboard production line has a third corrugated cardboard production device (not shown) which is identical to the second corrugated cardboard production devices 15, 16.
  • the first splicing device 14 comprises a first unwinding unit 18 for unrolling a finite first material layer from a first material roll 17 and a second unwinding unit 20 for unrolling a finite second material layer.
  • the finite first and second material layers are used to provide the endless first corrugated cardboard layer 12 connected to one another by means of a connecting and cutting unit (not shown) of the first splicing device 14.
  • the second corrugated cardboard production device 15 is preceded by a second splicing device 21 and a third splicing device 22.
  • the other second corrugated cardboard production device 16 is preceded by a fourth splicing device 23 and a fifth splicing device 24.
  • the third corrugated cardboard production device are a sixth splicer (not shown) and a seventh splicer (not shown) upstream.
  • the splicing devices are advantageously identical.
  • the second splicing device 21 has a third unrolling unit 26 for unrolling a finite third material layer from a third material roll 25 and a fourth unrolling unit 28 for unrolling a finite fourth material layer.
  • the finite third and fourth material layers are used to provide an endless first material layer connected to one another by means of a connection and cutting unit, not shown, of the second splicing device 21.
  • the third splicing device 22 has a fifth unwinding unit 30 for unrolling a finite fifth material layer from a fifth material roll 29 and a sixth unrolling unit 32 for unrolling a finite sixth material layer from a sixth material reel 31.
  • the finite fifth and sixth material layer become an endless second material layer connected to one another by means of a connection and cutting unit, not shown, of the third splicing device 22.
  • the endless first layer of material is fed to the corrugated cardboard production device 15 via at least one deflection roller and the endless second layer of material is fed via at least one deflection roller.
  • the corrugated cardboard production device 15 comprises a corrugated roller arrangement 34 with two rotatably mounted corrugated rollers for producing an endless corrugated layer 33 having a corrugation from the endless first material layer.
  • the corrugating rollers form a nip for carrying out and corrugating the endless first layer of material.
  • the corrugated cardboard production device 15 has a glue unit 35 which in turn comprises a glue metering roller, a glue container and a glue application roller.
  • the glue application roller forms a gluing gap with the lower corrugating roller, the glue application roller applying glue from the glue container to tips of the corrugation of the endless corrugated layer 33.
  • the endless second layer of material is then joined together with the corrugated layer 33 provided with glue in the corrugated cardboard production device 15 to form the second corrugated cardboard layer 11 laminated on one side.
  • the corrugated cardboard production device 15 has a pressing device 36 for pressing the endless second layer of material against the corrugated layer 33 provided with glue.
  • the pressing device 36 is advantageously designed as a pressing belt module. It presses against the endless second layer of material, which in turn is pressed against the corrugated layer 33 provided with glue and abutting the upper corrugating roller.
  • the fourth splicing device 23 has a seventh unrolling unit 38 for unrolling a finite seventh material layer from a seventh material roll 37 and an eighth unwinding unit 40 for unrolling a finite eighth material layer 39.
  • the finite seventh and eighth material layers become the provision of an endless third material layer connected to one another by means of a connecting and cutting unit (not shown) of the fourth splicing device 23.
  • the fifth splicing device 24 has a ninth unwinding unit 42 for unrolling a finite ninth material layer from a ninth material roll 41 and a tenth unrolling unit 44 for unrolling a finite tenth material layer.
  • the finite ninth and tenth material layers become an endless fourth material layer connected to one another by means of a connecting and cutting unit (not shown) of the fifth splicing device 24.
  • the corrugated cardboard production device 16 comprises a corrugated roller arrangement 45 with two corrugated rollers for producing an endless corrugated layer 46 having a corrugation from the endless third material layer.
  • the corrugating rollers form a nip for carrying out and corrugating the endless third material layer.
  • the corrugated cardboard production device 16 has a glue unit 47, which in turn comprises a glue metering roller, a glue container and a glue application roller.
  • the glue application roller forms a gluing gap with the upper corrugating roller, the glue application roller transferring glue from the glue container to tips of the corrugation of the corrugated layer 46.
  • the endless fourth layer of material is then joined together with the endless corrugated layer 46 provided with glue from the glue container in the corrugated cardboard production device 16 to form the further, second-sided, laminated, second corrugated cardboard layer 11.
  • the corrugated cardboard production device 16 has a pressing device 73 for pressing the endless fourth layer of material against the corrugated layer 46 provided with glue, which in turn rests in regions on the upper corrugating roller.
  • the pressing device 73 is advantageously designed as a pressing belt module. It presses against the endless fourth layer of material, which in turn is pressed against the corrugated layer 46 provided with glue and abutting the upper corrugating roller.
  • the sixth splicing device comprises an eleventh unwinding unit for unrolling a finite eleventh material layer from an eleventh material roll and a twelfth unrolling unit for unrolling a finite twelfth material layer from a twelfth material roll.
  • the finite eleventh and twelfth material layers are connected to one another by means of a connecting and cutting unit (not shown) of the sixth splicing device in order to provide an endless fifth material layer.
  • the seventh splicing device has a thirteenth unrolling unit for unrolling a finite thirteenth material layer from a thirteenth material roll and a fourteenth unrolling unit for unrolling a finite fourteenth material layer from a fourteenth material roll.
  • the finite thirteenth and fourteenth layers of material are connected to one another by means of a connecting and cutting unit (not shown) of the seventh splicing device in order to provide an endless sixth layer of material.
  • the endless fifth layer of material is fed to the third corrugated cardboard production device via at least one deflecting roller and the endless sixth layer of material is fed via at least one deflecting roller.
  • the third corrugated cardboard production device comprises a corrugated roller arrangement with two corrugated rollers arranged adjacent to one another in order to produce a corrugated layer 48 having a corrugation from the endless fifth material layer. These corrugated rollers form a nip for the passage and corrugation of the endless material layer.
  • the third corrugated cardboard production device has a glue unit, which in turn comprises a glue metering roller, a glue container and a glue application roller.
  • a glue unit which in turn comprises a glue metering roller, a glue container and a glue application roller.
  • the glue application roller forms a gluing gap with the upper corrugating roller, the glue application roller transferring glue from the glue container to tips of the corrugation of the endless corrugated layer 48.
  • the endless sixth material layer is then joined together with the endless corrugated layer 48 provided with glue from the glue container in the third corrugated cardboard production device to form the endless third corrugated cardboard layer 10 laminated on one side.
  • the third corrugated cardboard production device has a pressing device for pressing the endless sixth material layer against the corrugated layer 48 provided with glue, which in turn rests in regions on the upper corrugating roller.
  • the pressure device is designed as a pressure belt module. It presses against the endless sixth layer of material, which in turn is pressed against the corrugated layer 48 provided with glue and abutting the upper corrugating roller.
  • the latter is fed to an intermediate storage device 51 via an up-conveying device 49, where it forms loops with sufficient stock.
  • the latter is fed to a further intermediate storage device 52 via a further upward transport device 50, where it forms loops with sufficient stock.
  • the latter is fed to a third intermediate storage device via an up-conveying device, where it forms loops with sufficient stock.
  • a preheating device 53 of the corrugated board production line Downstream of the intermediate storage devices 51, 52 there is a preheating device 53 of the corrugated board production line, which comprises four heating rollers 54 arranged one above the other.
  • the corrugated cardboard layers 10, 11, 12 are fed to the preheating device 53 and partially wrap around the respective heating roller 54, as a result of which the corrugated cardboard layers 10, 11, 12 are preheated or heated during operation.
  • the corrugated board production line Downstream of the preheating device 53, the corrugated board production line has a gluing device 55 with three gluing rollers 56 arranged one above the other, which are partially immersed in a respective glue bath.
  • the second and third, preheated corrugated cardboard layers 11, 10 are in contact with the respective gluing roller 56.
  • the corrugated cardboard production line Downstream of the gluing device 55, the corrugated cardboard production line has the two-sided machine 9a, which is designed as a heating press device.
  • the two-sided machine 9a In the two-sided machine 9a, the glued corrugated cardboard layers 10, 11 and the first corrugated cardboard layer 12 are further heated and pressed together.
  • the two-sided machine 9a has a horizontal table 58 provided with heating elements 57, which extends in a transport direction 59 of the corrugated cardboard layers 12, 11, 10 present there.
  • the two-sided machine 9a has an endless pressure belt 61 which is guided around deflection rollers 60.
  • a pressure gap 62 is formed between the pressure belt 61 and the table 58, through which the corrugated cardboard layers 12, 11, 10 are transported and pressed together there.
  • the two-sided machine 9a has an adhesive point 72, which is the initial or upstream starting point of the corrugated cardboard pressure zone in the two-sided machine 9a.
  • the hot plates 2, 5 are arranged upstream adjacent to the adhesive point 72 and are each at a distance x which is between 10 cm and 100 cm.
  • the multilayer corrugated cardboard 13a is formed in the two-sided machine 9a.
  • the heating elements 57 are preferably part of the heating device.
  • the two-sided machine 9a has the hot plates 2, 5 at its upstream paper inlet end.
  • the first corrugated cardboard layer 12 is again guided on the first arcuate hot plate 2 of the heating device.
  • two second hot plates 5 are arranged at different heights. There is thus a lower and upper second hot plate 5.
  • Each second hot plate 5 has a second corrugated cardboard layer 11.
  • the third corrugated cardboard layer 10 runs into the second two-sided machine 9a.
  • the two second arc-shaped hot plates 5 are of identical design and each have a second heat-conducting plate element with an arc cross section, with a heating medium being located in every second plate element.
  • the second hot plates 5 are curved in / along the transport direction 59, in particular in the same direction. They are curved in opposite directions to the first hot plate 2, which is also curved in / along the transport direction 59.
  • the center or the leading end of the second arc-shaped hot plate 5, based on the transport direction 59 of the corrugated cardboard layers 12, 11, 10, is each connected to a carrier-like sleeve 4 via a connecting shaft.
  • the leading end of the second hot plates 5 is their downstream end.
  • the trailing or upstream ends of the second hot plates 5 are each connected to a cylinder unit 6.
  • the cylinder units 6 extend vertically.
  • the piston rods or connecting rods are extendable from the cylinder or retractable into this.
  • the second hot plates 5 can be pivoted about a respective horizontal pivot axis 63 or 64 in the respective sleeve 4.
  • Each second hot plate 5 has a downwardly directed guide surface for the respective second corrugated cardboard layer 11, while the first hot plate 2 has an upwardly directed guide surface for the first corrugated cardboard layer 12 has.
  • the guide surfaces of the second hot plates 5 are convexly curved. The curvature can change along the transport direction 59. During operation, the second corrugated cardboard layers 11 slide against the guide surfaces of the second hot plates 5, while the first corrugated cardboard layer 12 lies against the guide surface of the first hot plate 2.
  • the heating device which comprises three upstream, arc-shaped hot plates 2, 5, of a two-sided machine has a frame 1, wherein in the frame 1 a first arc-shaped hot plate 2 is arranged with a first heat-conducting plate element, which has an arc shape in cross section and in which a Heating medium or heating medium is provided.
  • the frame 1 has a wall 3 on which two sleeves 4 are provided.
  • a lower second arc-shaped hot plate 5 is arranged adjacent above the first arc-shaped hot plate 2 and comprises a second heat-conducting plate element which has an arc shape in cross section and in which a heating medium or heating medium is provided.
  • the center or the leading end of the lower second arc-shaped hot plate 5 is connected to the associated sleeve 4 via a connecting shaft, a pair of rotations being formed between this second arc-shaped hot plate 5 and the sleeve 4.
  • a cylinder unit 6 is arranged in the frame 1, the piston rod of which is connected to the trailing end of the second lower arc-shaped hot plate 5 via a connecting rod.
  • An upper second arc-shaped hot plate 5 is arranged adjacent above the lower second arc-shaped hot plate 5 and comprises one Another second heat-conducting plate element, which has an arc shape in cross section and in which a heating medium or heating medium is provided.
  • the center or the leading end of the upper second arc-shaped hot plate 5 is connected to the further associated sleeve 4 via a further connecting shaft, a further pair of rotations being formed between this upper second arc-shaped hot plate 5 and the further associated sleeve 4.
  • a further cylinder unit 6 is arranged in the frame 1, the piston rod of which is connected to the trailing end of the second upper arc-shaped hot plate 5 via a further connecting rod.
  • Each hot plate 2, 5 has a plurality of heating lines 65 and 66, respectively, which extend perpendicular to the transport direction 59.
  • the heating lines 65 run parallel and spaced apart in the first hot plate 2.
  • the heating lines 66 extend parallel and at a distance from one another.
  • the heating lines 65, 66 can be in flow connection with one another in the respective hot plate 2 or 5, forming at least one respective, preferably meandering, heating duct.
  • connecting lines 67 are provided in each hot plate 2, 5 between the heating lines 65 and 66, which advantageously extend adjacent to the side edges of the respective hot plate 2 and 5 and parallel to the transport direction 59.
  • the hot plates 2, 5 are closed with end plates, in particular for production reasons in the area of the connecting lines 67.
  • Each hot plate 2 or 5 has at least one inlet 68 which is in direct or indirect flow connection with the corresponding heating lines 65 or 66 stands.
  • the heating medium reaches the respective hot plate 2 or 5 via the at least one inlet 68 for heating the same.
  • Each hot plate 2 or 5 has at least one outlet 69, which is in direct or indirect flow connection with the corresponding heating lines 65 or 66 and is arranged essentially opposite to the at least one inlet 68.
  • the heating medium leaves the respective heated hotplate 2 or 5 via the at least one outlet 69.
  • a saturated steam generating device 71 Upstream and adjacent to every second hot plate 5 there is a saturated steam generating device 71 for generating saturated steam.
  • the smooth material layer or top layer of the respective adjacent second corrugated cardboard layer 11 is subjected to saturated steam.
  • Each saturated steam generating device 71 is advantageously arranged on the adjacent second hot plate 5.
  • the saturated steam generating device 71 is part of the adjacent second hot plate 5.
  • a steam / water spray device 70 for spraying water and / or steam onto the smooth material layer or top layer of the respective, adjacent, second corrugated cardboard layer 11 is arranged upstream and adjacent to every second hot plate 5.
  • Each steam / water spray device 70 is arranged between the second hot plate 5 and the adjacent saturated steam generating device 71.
  • Each steam / water spray device 70 is advantageously arranged on the adjacent second hot plate 5.
  • each steam / water spray device 70 is part of the adjacent second hot plate 5.
  • a saturated steam generating device 71 is assigned upstream of the pressure belt 61 of the third corrugated cardboard layer 10 in order to spray saturated steam also on the smooth material layer or top layer thereof.
  • the second hot plates 5 have steam outlet openings (not shown) on their guide surfaces in order to fill the respective second corrugated cardboard layer 11 or the finished corrugated cardboard 13a with steam.
  • the steam for heating the hot plates 2, 5 or the corrugated cardboard layers 11, 12 can originate, for example, from the actual two-sided machine 9a or from separate steam generating devices.
  • the principle of operation of this embodiment is as follows: the first arcuate hot plate 2 and the second arcuate hot plate 5 are provided at the paper inlet end of the two-sided machine 9; a second corrugated cardboard layer 11 and a first corrugated cardboard layer 12 adjacent to it are guided to run between the lower second arcuate hot plate 5 and the first arcuate hot plate 2, while another second corrugated cardboard layer 12 is guided to run between the second hot plates 5, while a third layer of corrugated cardboard 10 is guided to run above the upper second arcuate hot plate 5.
  • the second sheet-like hot plates 5 are lowered by using the respective cylinder unit 6 to come into contact with the respective second sheet of corrugated cardboard 11, the heat within the second sheet-like hot plate 5 quickly being applied to the corresponding second sheet of corrugated sheet 11 transfer becomes.
  • the heat inside the upper second arcuate hot plate 5 is transferred to the glue on the underside of the third corrugated cardboard layer 10, while the heat inside the lower second arcuate hot plate 5 is transferred to the glue under the upper second corrugated cardboard layer 11, while the heat inside the the first arcuate hot plate 2 is transferred onto the glue under the lower second corrugated cardboard layer 11 via the first corrugated cardboard layer 12, so that before the third corrugated cardboard layer 10, the second corrugated cardboard layers 11 and the first corrugated cardboard layer 12 are bonded, the glue can reach such a temperature that it is possible is to obtain optimum bonding ability, and a high quality multi-layer corrugated cardboard 13a is output when the third corrugated cardboard layer 10, the second corrugated cardboard layers 11 and the first corrugated cardboard layer 12 are properly connected.
  • the degree of binding between the second arcuate hot plates 5 and the second corrugated cardboard layers 11 can be fine-tuned by the respective fine adjustment means 9 for manually adjusting the position of the sleeve 4, which is provided below the sleeve 4, to ensure that the second Corrugated cardboard layers 11 can receive the maximum amount of heat.
  • the respective second arc-shaped hot plate 5 is quickly removed from the surface of the corresponding second corrugated cardboard layer 11 by the connecting rod 7 of the corresponding cylinder unit 6 in order to prevent excessive heat from damaging the bonding ability of the glue .
  • the temperature of the cover layers of the second corrugated cardboard layers 11 can be increased by the second hot plates 5, which improves the drying and gluing of the corrugated cardboard 13a.
  • the corrugated cardboard material has an insulating effect, with a free long pull of the heated cover layers generally leading to cooling and dehumidification.
  • the energy input is selected according to the invention such that it takes place immediately after the glue application by the gluing device 55 and the so-called free pull of the heated cover layers of the second corrugated cardboard layers 11 is kept as short as possible.
  • the amount of web present between the preheating device 53 and the gluing point 72 in the two-sided machine 9a can be considerably shortened.
  • the curved second hot plates 5 in particular make it possible to shorten the corrugated cardboard production line at low production speeds, since the preheating device 55, which would otherwise be required, can be dispensed with at production speeds of up to 140 m / min.
  • the cooling and dehumidifying of the corrugated cardboard layers 10, 11, 12 can also be reduced considerably, which minimizes the risk of warp formation.
  • the fibers of the corresponding cover layer are opened by the application or introduction of moisture and heat to the respective cover layer or to glued tips of the respective corrugated layer.
  • the two second hot plates 5 are pivoted in order to influence the contact time between the latter and the second corrugated cardboard layer 11 lying against it.
  • the temperature of the second layers of corrugated cardboard 11 can be adjusted by the respective contact time of the same with the second hot plate 5 leading this.
  • water is sprayed onto the second hot plates 5, in particular onto their downwardly directed guide surfaces for the respective second layers of corrugated cardboard 11, by the corrugated cardboard steam / water spraying devices 70 and / or the corrugated cardboard saturated steam generating devices 71.
  • the amount of water can be dosed. It is advantageously chosen depending on the speed of the corrugated cardboard production line, the width of the corrugated cardboard layers 12, 11, 10 and / or the type of corrugated cardboard layers 12, 11, 10. It is advantageous if the water is sprayed onto the second hot plates 5 in the running direction of the corrugated cardboard layers 12, 11, 10.
  • the water evaporates on the second hot plates 5 and thus has an evaporation temperature of approximately 100 ° C. and is in a saturated state.
  • the steam generated thereby advantageously fills a space between the respective second hot plate 5 and the second corrugated cardboard layer 11 guided thereon. This room thus forms a steam room. Since the spraying devices 70 and 71 and the resulting vapor space are adjacent to the respective guided corrugated cardboard web 11, the steam condenses at colder points and the volume of the corrugated cardboard layers 11 is filled with saturated steam.
  • water and / or steam is sprayed onto the respective corrugated cardboard layers 12, 11, 10 by the corrugated cardboard steam / water spraying devices 70 and / or the corrugated cardboard saturated steam generating devices 71.
  • the corrugated cardboard production line advantageously also has at least one cross-cutting device (not shown) for cross-cutting the multi-layer corrugated cardboard 13, 13a into individual sheets.
  • the corrugated cardboard production line does not have a preheating device 53 with heating rollers 54, so that the gluing device 55 follows immediately or immediately on the intermediate storage devices 51, 52.
  • the two-sided machine has no heating element 57.
  • the two-sided machine has no heating element 57. Furthermore, there is also no preheating device 53 with heating rollers 54. Conveniently, the corrugated cardboard production line at a distance of between 1 m and 5 m from the hot plates 2, 5 has no heating means, such as heating elements 57, preheating device 53 or the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)
  • Laminated Bodies (AREA)

Claims (16)

  1. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a), comportant un bâti (1),
    - dans lequel le bâti (1) comporte une première plaque chaude (2) en forme d'arc dotée d'un premier élément de plaque conducteur de chaleur qui présente une forme d'arc en section transversale et dans lequel un moyen de chauffage est prévu ;
    - dans lequel le bâti (1) comporte une paroi (3) sur laquelle est prévu un manchon (4) ;
    - dans lequel une deuxième plaque chaude (5) en forme d'arc est disposée au-dessus de la première plaque chaude (2) en forme d'arc et comporte un deuxième élément de plaque conducteur de chaleur présentant une forme d'arc en section transversale et dans lequel un moyen de chauffage est prévu ;
    - dans lequel un centre ou une extrémité avant de la deuxième plaque chaude (5) en forme d'arc est relié au manchon (4) par l'intermédiaire d'une tige de liaison, dans lequel une paire de rotation est formée entre la deuxième plaque chaude (5) en forme d'arc et le manchon (4) ;
    - dans lequel le bâti (1) comprend une unité de cylindres (6) dont la tige de piston est reliée à une extrémité arrière de la deuxième plaque chaude (5) en forme d'arc par une barre de liaison (7),
    caractérisé en ce que
    - la première plaque chaude (2) en forme d'arc est conçue pour transférer de la chaleur à l'intérieur de la première plaque chaude (2) en forme d'arc par l'intermédiaire d'une première couche de carton ondulé (12) sur la colle sous une deuxième couche de carton ondulé (11), et en ce que
    - la deuxième plaque chaude (5) en forme d'arc est conçue pour transférer de la chaleur à l'intérieur de la deuxième plaque chaude (5) en forme d'arc à la deuxième couche de carton ondulé (11) et simultanément sur la colle sur une face inférieure d'une troisième couche de carton ondulé (10).
  2. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon la revendication 1, caractérisé en ce que le premier élément de plaque conducteur de chaleur et le second élément de plaque conducteur de chaleur sont prévus au niveau d'une entrée de papier de la machine bilatérale (9 ; 9a).
  3. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon la revendication 1, caractérisé en ce que chacun du premier élément de plaque conducteur de chaleur et du second élément de plaque conducteur de chaleur est muni de deux ou de plusieurs lignes de chauffage espacées le long de la direction d'extension de l'arc, dans lequel la direction axiale de chaque ligne de chauffage est parallèle à la direction longitudinale du premier élément de plaque conducteur de chaleur et du deuxième élément de plaque conducteur de chaleur, et les lignes de chauffage contiennent un fluide de chauffage.
  4. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon la revendication 1, caractérisé en ce que le manchon (4) est relié à la paroi (3) au moyen de vis passant par des trous allongés prévus dans le manchon (4).
  5. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon la revendication 1, caractérisé en ce qu'un moyen de réglage fin (8) pour le réglage manuel de la position du manchon (4) est disposé sous le manchon (4) et prévu dans le bâti (1).
  6. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9, 9a) selon l'une des revendications précédentes, caractérisé en ce que les plaques chaudes (2, 5) sont disposées immédiatement à côté d'un point de collage (72) se trouvant en amont de la machine bilatérale (9 ; 9a).
  7. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon la revendication 6, caractérisé en ce que les plaques chaudes (2, 5) ont une distance x avec le point de collage (72), où 10 cm ≤ x ≤ 100 cm.
  8. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de chauffage comprend au moins un dispositif de production de vapeur saturée pour carton ondulé (71) destiné à appliquer de la vapeur saturée sur la couche de carton ondulé (10, 11), dans lequel, avantageusement, l'au moins un dispositif de production de vapeur saturée pour carton ondulé (71) mouille la deuxième plaque chaude (5) respective avec de l'aide d'eau pour que celle-ci s'évapore.
  9. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon la revendication 8, caractérisé en ce que l'au moins un dispositif de production de vapeur saturée pour carton ondulé (71) est disposé à côté de la deuxième plaque chaude (5) ou fait partie de celle-ci.
  10. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de chauffage comprend au moins un dispositif de pulvérisation de vapeur/d'eau (70) pour carton ondulé, de préférence disposé en amont.
  11. Dispositif de chauffage comprenant deux plaques chaudes en forme d'arc (2, 5) placées 1en amont, d'une machine bilatérale (9 ; 9a) selon la revendication 10, caractérisé en ce que l'au moins un dispositif de pulvérisation de vapeur/eau pour carton ondulé (70) est disposé à côté de la deuxième plaque chaude (5) ou en fait partie.
  12. Dispositif de chauffage, comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon l'une des revendications 8 à 11, caractérisé en ce qu'un espace de vapeur respectif pour l'application de vapeur sur la couche de carton ondulé (11) est limité spatialement par la deuxième plaque chaude (5) et la deuxième couche de carton ondulé (11) guidée le long de celle-ci.
  13. Dispositif de chauffage comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon l'une des revendications précédentes, caractérisé en ce qu'un temps de contact entre la deuxième plaque chaude (5) et la deuxième couche de carton ondulé (11) guidée sur celle-ci est réglable.
  14. Dispositif de chauffage, comprenant deux plaques chaudes (2, 5) en forme d'arc disposées en amont, d'une machine bilatérale (9 ; 9a) selon l'une des revendications précédentes, caractérisé en ce qu'au moins l'une de la deuxième ou de la troisième couche de carton ondulé (10, 11), réalisée(s) sous la forme d'une couche de carton ondulé (10, 11) contrecollée sur une face, et/ou la première couche de carton ondulé (12), réalisée sous la forme d'une couche de contrecollage, en particulier jusqu'à une vitesse de transport de 200 m/min, en particulier de 140 m/min, reste non chauffée jusqu'au dispositif de chauffage.
  15. Machine bilatérale,
    - comportant au moins une table (58),
    - comportant au moins un élément de pressage (61) disposé à côté de la table (58),
    - comportant une fente de pressage (62) disposée en amont entre l'au moins une table (58) et l'au moins un élément de pressage (61) pour le passage des couches de carton ondulé (12, 11, 10) pour former du carton ondulé (13 ; 13a), et
    - comportant un dispositif de chauffage selon l'une des revendications précédentes.
  16. Machine bilatérale selon la revendication 15, caractérisé en ce que le carton ondulé (13 ; 13a) ou les couches de carton ondulé (12, 11, 10) restent/restent non chauffés dans la fente de pressage (62).
EP16707042.4A 2015-04-20 2016-02-24 Dispositif de chauffage, comprenant deux plaques chaudes en forme d'arc disposées en amont, d'une machine bilatérale Active EP3285996B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201520236187.5U CN204586068U (zh) 2015-04-20 2015-04-20 双面机前置双重圆弧热板加热装置
PCT/EP2016/053828 WO2016169675A1 (fr) 2015-04-20 2016-02-24 Dispositif de chauffage, comprenant deux plaques chaudes en forme d'arc disposées en amont, d'une machine bilatérale

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EP3285996A1 EP3285996A1 (fr) 2018-02-28
EP3285996B1 true EP3285996B1 (fr) 2020-07-01

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US (1) US10583624B2 (fr)
EP (1) EP3285996B1 (fr)
JP (1) JP6515192B2 (fr)
CN (2) CN204586068U (fr)
ES (1) ES2812761T3 (fr)
WO (1) WO2016169675A1 (fr)

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EP3285996A1 (fr) 2018-02-28
CN208529866U (zh) 2019-02-22
US20180104925A1 (en) 2018-04-19
US10583624B2 (en) 2020-03-10
JP6515192B2 (ja) 2019-05-15
ES2812761T3 (es) 2021-03-18
WO2016169675A1 (fr) 2016-10-27
JP2018509317A (ja) 2018-04-05
CN204586068U (zh) 2015-08-26

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