• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device (1) for producing tissue paper, which has at least one endless belt (2) for supporting and transporting a fiber web (3), wherein the device (1) has at least one pressure roller (4), wherein between the at least one pressure roller (4) and the at least one endless belt (2) a gap (5) for pressing the fiber web (3) is formed, wherein the endless belt (2) of at least one subband (9) made of metal, in particular steel, constructed is, which is narrower than the endless belt (2), wherein the at least one sub-band (10) by means of a helical circumferential weld (11) to the endless belt (2) is connected.
    公开号:AT518283A4
    申请号:T50035/2016
    申请日:2016-01-25
    公开日:2017-09-15
    发明作者:
    申请人:Berndorf Band Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a device for producing tissue paper, which has at least one endless belt for supporting and transporting a fiber web, wherein the device has at least one pressure roller, wherein between the at least one pressure roller and the at least one endless belt, a gap for pressing the fiber web is formed.
    Due to its absorbency, tissue paper is often used for sanitary paper products such as toilet paper, paper tissues, paper napkins, paper cleaning cloths, etc.
    A device of the aforementioned type has become known from US8486229B2. In the known embodiment, instead of a large crepe cylinder, also called a Yankee roll, on which the fiber web is dried, pressed and optionally also creped, an endless metal belt is used. A disadvantage of the prior art is that when using an endless belt, which has been made endless by means of a transverse weld, the transverse weld can be imaged in the product. In addition, due to the high mechanical stresses of the endless belt, as they occur in the production of tissue paper, damage to the endless belt, for example, by tears in the transverse weld, come, which necessitate an exchange of the endless belt and interruptions of the production process can result.
    It is therefore an object of the present invention to overcome the disadvantages of the prior art and to increase the product quality and to prevent production losses.
    This object is achieved with a device of the type mentioned in the present invention, that the endless belt from at least a subband made of metal, especially steel, is constructed, which is narrower than the endless belt, wherein the at least one sub-band by means of a helical circumferential weld to the Endless belt is connected.
    The solution according to the invention is characterized by design also by a very long life of the tape used. A further advantage of the solution according to the invention is that the helical course of the weld distributes the thermal and mechanical stresses acting on belt-contacting machine parts, which are transmitted from the belt, more uniformly, whereby peak loads and overstress can be avoided.
    According to an advantageous embodiment of the invention, it may be provided that the helical weld is the only weld of the endless belt. In this variant of the invention, the endless belt viewed in the longitudinal direction of the endless belt on no transversely to the helical weld extending transverse weld seam. Due to the total absence of transverse welds, the load capacity of the endless belt is further increased.
    In order to keep the total length of the weld small, it may be provided that the weld is inclined in a longitudinal direction of the endless belt.
    With regard to a mechanical load capacity in a longitudinal direction of the endless belt, it has proven to be advantageous that the weld in the longitudinal direction of the belt at an angle of 1 ° to 25 °, in particular from 6 ° to 9 °, includes.
    The mechanical properties of the endless belt can be further improved in that the endless belt is made of a single sub-band, wherein the sub-band has a band body formed from a single, joint-free piece of sheet metal. Under the formulation joint-free is understood here that the metal sheet not by welding several smaller
    Pieces is made. The band body of the sub-band thus has no welds prior to the production of the endless belt.
    According to an advantageous embodiment of the invention, it may be provided that the sub-band has a thickness of 0.3 mm to 3.5 mm, in particular from 0.8 mm to 1.2 mm, and at least one width between 300 mm and 1000 mm , wherein the endless belt has a width between 700 mm and 5,000 mm.
    In order to ensure the most accurate possible arrangement of the endless belt in the device, it may be provided that at outer edges of the endless belt subsequent regions of the sub-band are cut off, wherein opposing outer edges of the endless belt lie in mutually parallel planes.
    The mechanical properties of the endless belt can be further improved in that the at least one sub-band is formed from duplex steel.
    An embodiment of the invention, which is characterized by high corrosion resistance and strength, is that the duplex steel has a two-phase structure with a ratio of ferrite to austenite between 0.8 to 1.2, in particular of 1. For example, the duplex steel may have a two-phase structure with 50% ferrite and 50% austenite.
    The abovementioned properties of the endless belt can be improved even further by the duplex steel having between 23 and 26% chromium and between 5 and 9% nickel.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    In each case, in a highly simplified, schematic representation:
    2 shows an endless belt of the device from FIG. 1. FIG.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals and the same component names, the disclosures contained throughout the description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these position information in a change in position mutatis mutandis to transfer to the new location. All statements of value ranges in the present description should be understood to include any and all sub-ranges thereof, e.g. is the statement 1 to 10 to be understood that all sub-areas, starting from the lower limit 1 and the upper limit 10 are included, ie. all sub-areas begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
    According to FIG. 1, a device 1 for the production of tissue paper has an endless belt 2 for supporting and transporting a fiber web 3. Furthermore, the device 1 comprises a pressure roller 4. Between the pressure roller 4 and the endless belt 2, a gap 5 for pressing the fiber web 3 is formed. The endless belt 2 is supported by a plurality of rollers 6, 7, 8, one of which, for example, may be driven to drive the endless belt 2. A direction of rotation of the endless belt 2 is indicated in Fig. 1 by an arrow. Although three rollers 6, 7, 8 are shown in FIG. 1, the number of rollers around which the endless belt 2 revolves may vary between two and any number of rollers, depending on the embodiment.
    The fibrous web 3 is transported into the nip 5, in which it is pressed by the pressure roller 4 and the endless belt 2. A transport of the fiber web 3 to the gap 5 can take place by means of a conveying means, for example a mat of wire, not shown here, a textile material, etc. in a manner known per se. Before the gap 5, the fiber web 3 can be solved by the funding also in a conventional manner. By means of the endless belt 2, the fiber web 3 is transported further out of the gap 5 in the direction of rotation of the endless belt 2. The endless belt 2 and the fiber web 3 located thereon can be heated by means of heating elements, not explicitly shown here, for example by means of hot air blowers, in order to dry the fiber web 3. Also, the rollers 6, 7, 8 may be heated. After the fiber web 3 has dried, it can be removed from the endless belt 2 by means of a removal device 9. By means of the removal device 9, for example a scraper, in particular a creping doctor, or a roller, the fiber web 3 can also be creped.
    As can be seen from Fig. 2, the endless belt 2 from a subband 10 made of metal, in particular steel, constructed. The sub-band 10, which is narrower than the endless belt 2, is connected to the endless belt 2 by means of a helical circumferential weld 11. At the outer edges 12, 13 of the endless belt 2 subsequent regions of the sub-strip 10 are cut off, so that opposite outer edges 12, 13 of the endless belt 2 parallel to each other.
    The sub-band 10 may for example have a thickness of 0.3 mm to 3.5 mm, in particular from 0.8 mm to 1.2 mm, and at least one width between 300 mm and 1000 mm. The produced endless belt 2 itself may have, for example, a width between 700 mm and 5,000 mm. The circumferential length of the endless belt 2 may also vary and be for example between 3 and 50 m. Depending on the length and size of the device 1.
    To achieve the desired length and width of the endless belt, the sub-band is helically placed next to each other so that adjacent sections of the longitudinal edge along a helical line. Then the abutting portions of the longitudinal edge are welded together. In principle, all suitable known welding methods can be used as the welding method, for example laser welding, TIG welding, MIG / MAG welding, etc.
    Preferably, the sub-band 10 is formed of duplex steel, although other steels for the production of the sub-band 10 can be used.
    If a duplex steel is used, it is particularly advantageous if the duplex steel has a two-phase structure with a ratio of ferrite to austenite between 0.8 to 1.2, in particular of 1. In addition, the duplex steel may have between 23 and 26% chromium and between 5 and 9% nickel.
    Although it is basically possible to make the endless belt 2 from a plurality of subbands 10 and screw them together, it is with regard to the mechanical properties of the endless belt 2, however, advantageous if the endless belt 2 is made of a single subband 10 and the helical weld 11 is the only weld of the endless belt 2. In addition, the sub-band 10 may have a band body formed from a single, joint-free piece of sheet metal.
    The weld 10 is inclined in the longitudinal direction of the endless belt 2 and encloses an angle α with a longitudinal center plane ε of the endless belt. The angle α is in this case in a range of 1 ° to 25 °, in particular from 6 ° to 9 °. To improve its mechanical properties, the weld may be post-processed, for example by grinding, irradiation with particles, in particular shot peening, etc.
    For the sake of order, it should finally be pointed out that for a better understanding of the construction, elements have been shown partially unevenly and / or enlarged and / or reduced in size.
    REFERENCE SIGNS LIST 1 device 2 endless belt 3 fiber web 4 pressure roller 5 gap 6 roller 7 roller 8 roller 9 puller 10 partial web 11 weld 12 outer edge 13 outer edge ε longitudinal center plane
    权利要求:
    Claims (10)
    [1]
    claims
    1. A device (1) for the production of tissue paper, which has at least one endless belt (2) for supporting and transporting a fiber web (3), wherein the device (1) has at least one pressure roller (4), wherein between the at least a pressure roller (4) and the at least one endless belt (2) a gap (5) for pressing the fiber web (3) is formed, characterized in that the endless belt (2) from at least a sub-band (10) made of metal, in particular steel, is constructed, which is narrower than the endless belt (2), wherein the at least one sub-band (10) by means of a helical circumferential weld (11) to the endless belt (2) is connected.
    [2]
    2. Device according to one of claim 1, characterized in that the helical weld seam (11) is the only weld of the endless belt (2).
    [3]
    3. Apparatus according to claim 1 or 2, characterized in that the weld seam (11) is inclined in a longitudinal direction of the endless belt (2).
    [4]
    4. Apparatus according to claim 3, characterized in that the weld seam (11) in the longitudinal direction of the endless belt (2) with a longitudinal center plane (ε) of the endless belt (2) an angle (a) of 1 ° to 25 °, in particular of the sixth ° to 9 °.
    [5]
    5. Device according to one of claims 1 to 4, characterized in that the endless belt (2) is made of a single subband (10), wherein the sub-band (10) has a band body formed from a single, joint-free piece of metal sheet.
    [6]
    6. Device according to one of claims 1 to 5, characterized in that the subband (10) has a thickness of 0.3 mm to 3.5 mm, in particular from 0.8 mm to 1.2 mm, and at least one width between 300 mm and 1000 mm, wherein the endless belt has a width between 700 mm and 5,000 mm.
    [7]
    7. Device according to one of claims 1 to 7, characterized in that at outer edges (12,13) of the endless belt (2) subsequent regions of the sub-strip (10) are cut off, wherein opposing outer edges (12, 13) of the endless belt (2 ) parallel to each other.
    [8]
    8. Apparatus according to claim 1 or 2, characterized in that the at least one sub-band (10) is formed from duplex steel.
    [9]
    9. The device according to claim 3, characterized in that the duplex steel has a two-phase structure with a ratio of ferrite to austenite between 0.8 to 1.2, in particular of 1.
    [10]
    10. Apparatus according to claim 4 or 5, characterized in that the duplex steel between 23 and 26% chromium and between 5 and 9% nickel.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE2311909C3|1979-06-28|Device for the continuous pressure treatment of webs
    DE2139159B2|1974-01-10|Device for spreading webs of material, in particular webs of paper
    DE3013617A1|1980-10-23|SPLIT SCISSORS FOR PAPER
    DE3131843A1|1982-03-18|ROLLING PRESS FOR PRESSING WATER FROM A RUNNING MATERIAL
    DE2061703B2|1974-01-17|Roll cutting device
    DE102006046500A1|2008-04-03|Machine for producing a corrugated cardboard web laminated on at least one side and tensioning roll for such a machine
    AT518283B1|2017-09-15|Device for the production of tissue paper
    EP2687361B1|2016-04-27|Machine for producing corrugated paper
    DE102005042351A1|2007-05-03|Device for processing web-shaped material
    DE2805883C2|1983-07-28|Press roll arrangement for dewatering machines
    DE3315417C1|1984-10-04|Methods and devices for winding and forming coils made of elastic plastic or metal wire, preferably for joining flat structures
    DE3545270C1|1987-04-23|Spreader
    DE2063107A1|1972-06-22|Method and device for unraveling fibrous webs
    DE1159754B|1963-12-19|Cylinder jacket in welded design for drying cylinders of paper machines
    DE102006057453B4|2013-04-25|folding
    EP0031831B1|1983-05-11|Process and device for the production of fiber slubbing and device for carrying out the process
    DE102010000855A1|2011-08-25|Method for manufacturing endless belt utilized in manufacturing, processing and printing machine for e.g. paper web, involves interconnecting edges of strip, where edges are in wavy or flat serrated form before edges are connected
    CH657430A5|1986-08-29|CORE TUBE ROLLER FOR A CRUSHING MACHINE.
    DE112004001078T5|2006-03-30|Method and device for calendering a paper or board web
    AT12469U1|2012-06-15|guide roll
    AT93532B|1923-07-10|Roller press for pressing liquid out of fibrous materials.
    AT513550B1|2015-02-15|Apparatus for treating a fibrous web
    AT158236B|1940-03-26|Drying felt and drying group for paper machines.
    DE102014202557A1|2015-08-13|WEB TREATMENT DEVICE
    DE102013201901B4|2015-12-03|Method and device for producing a multilayer printed product and printing machine
    同族专利:
    公开号 | 公开日
    AT518283B1|2017-09-15|
    EP3408446A1|2018-12-05|
    WO2017127857A1|2017-08-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2007082994A1|2006-01-20|2007-07-26|Metso Paper, Inc.|Method for manufacturing a metal belt for use in a paper/board machine or in a finishing machine|
    WO2015027263A1|2013-08-28|2015-03-05|Berndorf Band Gmbh|Continuous belt with a metal belt body|
    AT283194B|1967-06-28|1970-07-27|Vmw Ranshofen Berndorf Ag|Welding or soldering connection for endless metal strips|
    FI20085351A0|2008-04-23|2008-04-23|Metso Paper Inc|Roll to a fiber web machine and method of producing a roll to a fiber web machine|
    FI8397U1|2009-05-27|2009-08-14|Metso Paper Inc|Device for making fiber web|AT520352A1|2017-08-24|2019-03-15|Berndorf Band Gmbh|Method for producing an endless belt with a band body comprising at least one sheet of duplex steel|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50035/2016A|AT518283B1|2016-01-25|2016-01-25|Device for the production of tissue paper|ATA50035/2016A| AT518283B1|2016-01-25|2016-01-25|Device for the production of tissue paper|
    PCT/AT2017/060009| WO2017127857A1|2016-01-25|2017-01-24|Method for producing tissue paper|
    EP17711060.8A| EP3408446A1|2016-01-25|2017-01-24|Method for producing tissue paper|
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