• 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:
    Method to reduce adhesion of a damp fibrous material web, e.g., a paper or material web, to a rotating roll. The method includes producing a steam cushion between the rotating roll and the fibrous material web.
    公开号:US20010007279A1
    申请号:US09/153,344
    申请日:1998-09-15
    公开日:2001-07-12
    发明作者:Dr. Martin Kusterman
    申请人:Voith Sulzer Papiermaschinen GmbH；
    IPC主号:D21F5-02
    专利说明:
    [0001] The present application claims priority under 35 U.S.C. §119 of German Patent Application No. 197 41 517.2, filed on Sep. 20, 1997, the disclosure of which is expressly incorporated by reference herein in its entirety. [0001] BACKGROUND OF THE INVENTION
    [0002] 1. Field of the Invention [0002]
    [0003] The present invention relates to a method to reduce adhesion of a damp web, e.g., paper, textile, or other fibrous material web, to a rotating roll. [0003]
    [0004] 2. Discussion of Background Information [0004]
    [0005] Due to the ever-increasing speeds of machines for manufacturing and/or processing fibrous material webs, reducing adhesion of the damp fibrous material web to a smooth surface of rotating rolls is taking an increasing significance. The forces necessary to remove the fibrous material web from the roll increasingly effect the fibrous material web and can even result in a web break. [0005] SUMMARY OF THE INVENTION
    [0006] The present invention provides a method for reducing adhesion of the fibrous material web to a rotating roll. [0006]
    [0007] In accordance with the present invention, a steam cushion is produced between the roll and the fibrous material web. [0007]
    [0008] Since the steam cushion reduces or substantially hinders direct contact of the fibrous material web with the surface of the roll, the forces necessary for removing the fibrous material web from the roll are reduced considerably. [0008]
    [0009] The steam cushion can be produced, e.g., by heating the roll to a very high temperature that is higher than necessary for the processing of the web. For example, the temperature of the surface of the roll can be heated to a temperature at produces steam from the damp material web, e.g., temperature values greater than approximately 120° C. [0009]
    [0010] It is also possible to produce the steam cushion via heating of the roll and/or via blowing hot steam into an inlet opening between the roll and the fibrous material web. [0010]
    [0011] The process is particularly applicable for use in parts of the machine in which the temperature of the fibrous material web is less than approximately 70°C. and/or the dry content of the fibrous material web is less a approximately 60%. The method of the present invention is particularly advantageous in these areas of the machine, e.g., press sections for draining or dryer section for drying, because adhesion is particularly strong. [0011]
    [0012] Accordingly, the present invention is directed to a method to reduce adhesion of a damp fibrous material web to a rotating roll. The method includes producing a steam cushion between the rotating roll and the fibrous material web. [0012]
    [0013] In accordance with another feature of the present invention, the producing of the steam cushion includes heating the rotating roll to a temperature that is higher than a temperature necessary for one of drying or draining of the fibrous material web. The heating of the rotating roll may include heating the surface of the rotating roll to a temperature of greater than approximately 120°C. [0013]
    [0014] In accordance with another feature of the present invention, the method includes blowing steam into an inlet opening between the rotating roll and the fibrous material web. [0014]
    [0015] In accordance with still another feature of the present invention, the temperature of the fibrous material web being guided to the rotating roll is less than approximately 70°C. and/or the dry content of the fibrous material web being guided to the rotating roll is less than approximately 60%. Further, the rotating roll can be located within a press section for draining the fibrous material web. The rotating roll can also be located within a dryer section for drying the fibrous material web. [0015]
    [0016] In accordance with yet another feature of the present invention, the fibrous material web is composed of one of a paper and textile web. [0016]
    [0017] In accordance with a further feature of the present invention, the fibrous material web guided to the rotating roll has at least one of the temperature of less than approximately 70° C. and a dry content of less than approximately 60%. [0017]
    [0018] In accordance with a still further feature of the present invention, the rotating roll may be positioned in a section of a web producing machine in which the fibrous material web has at least one of the temperature less than approximately 70°C. and a dry content less than approximately 60%. Further, the rotating roll may be positioned in at least one of a press section and a dryer section. Still further, the rotating roll may be positioned in an initial area of the dryer section. The method may further include rewetting the fibrous material web in the dryer section prior to guiding the fibrous material web to the rotating roll. [0018]
    [0019] Other exemplary embodiments and advantages of the present invention may be ascertained by reviewing the present disclosure and the accompanying drawing. [0019] BRIEF DESCRIPTION OF THE DRAWINGS
    [0020] The present invention is further described in the detailed description which follows, in reference to the noted drawing by way of non-limiting examples of embodiments of the present invention, and wherein: [0020]
    [0021] The FIGURE illustrates a web being guided through a press device. [0021] DETAILED DESCRIPTION OF THE PRESENT INVENTION
    [0022] The particulars shown herein are by way of example and for purposes of illustrative discussion of the embodiments of the present invention only and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the present invention. In this regard no attempt is made to show structural details of the present invention in more detail than necessary for the fundamental understanding of the present invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the present invention may be embodied in practice. [0022]
    [0023] In the FIGURE, a portion of a press section is depicted in which a fibrous material web [0023] 1 is guided rough a press nip (opening) by a continuous draining felt 2. The press nip is formed by two rolls 4 and 5, in which roll 4 has a smooth surface.
    [0024] To reduce adhesion of fibrous material web [0024] 1 to the smooth surface of roll 4, roll 4 is heated to as high a temperature as possible, e.g., over approximately 120° C. In this manner, evaporation of a part of the water in fibrous material web 1 occurs to form a steam cushion between fibrous material web 1 and roll 4. Various different heating systems may be utilized, e.g., electric systems or heated oil based systems, for heating roll 4. Moreover, hot steam may be blown into an inlet side of the nip between roll 4 and fibrous material web 1 via a steam blow box 3. In this manner, the steam cushion may be enlarged.
    [0025] The present invention may also be utilized in dryer sections in which heated dryer cylinders are looped by fibrous material web [0025] 1. The dryer cylinders can be heated to a temperature substantially higher than a temperature necessary for drying the web so as to create the steam cushion. Further, steam blow boxes 3 may be arranged at an inlet opting between fibrous material web 1 and the dryer cylinder.
    [0026] Because the process can be advantageously practiced where the temperature of fibrous material web [0026] 1 is under approximately 70°C. and/or the dry content of fibrous material web 1 is under approximately 60%, the most advantageous areas within the dryer section of the web producing mache for practicing the method of the present invention is in an initial area of the dryer section or in all initial area of an end drying section, e.g., if a strong rewetting occurs in a size press or the like.
    [0027] It is noted that the foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present invention. While the present invention has been described with reference to a preferred embodiment, it is understood that the words which have been used herein are words of description and illustration, rather than words of limitation. Changes may be made, within the purview of the appended claims, as presently stated and as amended, without departing from the scope and spirit of the present invention in its aspects. Although the present invention has been described herein with reference to particular means, materials and embodiments, the present invention is not intended to be limited to the particulars disclosed herein; rather, the present invention extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims. [0027]
    权利要求:
    Claims (17)
    [1" id="US-20010007279-A1-CLM-00001] 1. A method to reduce adhesion of a damp fibrous material web to a rotating roll comprising:
    producing a steam cushion between the rotating roll and the fibrous material web.
    [2" id="US-20010007279-A1-CLM-00002] 2. The method in accordance with
    claim 1 , the producing of the steam cushion comprising:
    heating the rotating roll to a temperature that is higher than a temperature necessary for one of drying or draining of the fibrous material web.
    [3" id="US-20010007279-A1-CLM-00003] 3. The method in accordance with
    claim 2 , the heating of the rotating roll comprising heating the surface of the rotating roll to a temperature of greater than approximately 120°C.
    [4" id="US-20010007279-A1-CLM-00004] 4. The method in accordance with
    claim 1 , further comprising:
    blowing steam into an inlet opening between the rotating roll and the fibrous material web.
    [5" id="US-20010007279-A1-CLM-00005] 5. The method in accordance with
    claim 1 , wherein a temperature of the fibrous material web being guided to the rotating roll is less than approximately 70°C.
    [6" id="US-20010007279-A1-CLM-00006] 6. The method in accordance with
    claim 5 , wherein the rotating roll is located within a press section for draining file fibrous material web.
    [7" id="US-20010007279-A1-CLM-00007] 7. The method in accordance with
    claim 5 , wherein the rotating roll is located within a dryer section for drying the fibrous material web.
    [8" id="US-20010007279-A1-CLM-00008] 8. The method in accordance with
    claim 1 , wherein a dry content of the fibrous material web being guided to the rotating roll is less than approximately 60%.
    [9" id="US-20010007279-A1-CLM-00009] 9. The method in accordance with
    claim 8 , wherein the rotating roll is located within a press section for draining the fibrous material web.
    [10" id="US-20010007279-A1-CLM-00010] 10. The method in accordance with
    claim 8 , wherein the rotating roll is located within a dryer section for drying the fibrous material web.
    [11" id="US-20010007279-A1-CLM-00011] 11. The method in accordance with
    claim 1 , wherein the fibrous material web is composed of one of a paper and textile web.
    [12" id="US-20010007279-A1-CLM-00012] 12. The method in accordance with
    claim 1 , the producing of the steam cushion comprising:
    blowing steam into an inlet opening between the rotating roll and the fibrous material web.
    [13" id="US-20010007279-A1-CLM-00013] 13. The method in accordance with
    claim 1 , wherein the fibrous material web being guided to the rotating roll has at least one of the temperature of less an approximately 70°C. and a dry content of less than approximately 60%.
    [14" id="US-20010007279-A1-CLM-00014] 14. The method in accordance with
    claim 1 , wherein the rotating roll is positioned in a section of a web producing machine in which the fibrous material web has at least one of the temperature less than approximately 70°C. and a dry content less than approximately 60%.
    [15" id="US-20010007279-A1-CLM-00015] 15. The method in accordance with
    claim 14 , wherein the rotating roll is positioned in at least one of a press section and a dryer section.
    [16" id="US-20010007279-A1-CLM-00016] 16. The method in accordance with
    claim 15 , wherein the rotating roll is positioned in an initial area of the dryer section.
    [17" id="US-20010007279-A1-CLM-00017] 17. The method in accordance with
    claim 15 , further comprising:
    rewetting the fibrous material web in the dryer section prior to guiding the fibrous material web to the rotating roll.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE19741517A1|1999-03-25|
    US6436239B2|2002-08-20|
    EP0903437A3|2000-04-05|
    EP0903437A2|1999-03-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2008525759A|2004-12-31|2008-07-17|メッツォペーパーインコーポレイテッド|Method for improving paper passing in a drying section of a paper machine, method of using a rotary drying cylinder, drying section of a paper machine, and method of selecting a drying method|
    EP2732335A4|2011-07-14|2015-02-25|Reald Inc|Optical systems with compact back focal lengths|
    US9743076B2|2008-05-09|2017-08-22|Reald Inc.|Optical systems with compact back focal lengths|
    EP3339507B1|2016-12-21|2019-04-17|Voith Patent GmbH|Method for operating a heating group subsystem and heating group subsystem|GB598111A|1945-04-12|1948-02-11|Carrier Ross Engineering Compa|Withdrawing vapour from paper-making or other machines for drying webs of material|
    US96039A||1869-10-19||Improved attachment to rolls for calendering paper-boards |
    DE588546C|1930-12-16|1933-11-25|Rudolf Steinmetz|Suction device for the steam and supply device for warm air to drying sections for paper machines|
    DE579525C|1932-02-25|1933-06-27|Netzschkauer Maschinenfabrik F|Drying section on paper and dewatering machines|
    US3097933A|1958-07-07|1963-07-16|Kimberly Clark Co|Papermaking drying machine|
    DE1635343A1|1966-10-12|1971-04-01|Vepa Ag|Method and device for the non-contact heat treatment of goods that can be stressed in longitudinal direction|
    US3560333A|1967-08-15|1971-02-02|Scott Paper Co|Method and apparatus for drying paper on a yankee dryer|
    SE364328B|1969-01-27|1974-02-18|Tampella Oy Ab||
    FR2106708A5|1970-09-22|1972-05-05|Chamouton Daniel||
    US4351700A|1980-06-23|1982-09-28|Dove Norman F|Steam distribution apparatus for the nip of two rolls|
    US4596333A|1983-10-31|1986-06-24|Gilreath Charles T|Sheet holder|
    FI75890C|1987-01-23|1988-08-08|Valmet Paperikoneet Oy|FOERFARANDE OCH ANORDNING I PRESSPARTIET I EN PAPPERSMASKIN FOER LOESGOERING AV BANAN FRAON YTAN AV EN PRESSVALS.|
    FI89085C|1987-01-23|1993-08-10|Valmet Paperikoneet Oy|Regulating procedure for a paper machine press section|
    CA1328167C|1987-02-13|1994-04-05|Borgeir Skaugen|Apparatus for drying a web|
    US4876803A|1987-02-13|1989-10-31|Beloit Corporation|Dryer apparatus for drying a web|
    US5404653A|1987-02-13|1995-04-11|Beloit Technologies, Inc.|Apparatus for drying a web|
    US5507104A|1987-02-13|1996-04-16|Beloit Technologies, Inc.|Web drying apparatus|
    US4934067A|1987-02-13|1990-06-19|Beloit Corporation|Apparatus for drying a web|
    EP0289477A3|1987-04-28|1989-03-08|Valmet Paper Machinery Inc.|Method for hot-pressing of a paper web and a drying device for the implementation of the method|
    FI93663C|1990-06-06|1995-05-10|Valmet Paper Machinery Inc|Method and apparatus in a press section of a paper machine provided with a separate press|
    FI92941C|1991-01-18|1995-01-25|Valmet Paper Machinery Inc|Method and apparatus in the press portion of a paper machine for detaching the web from the surface of a press roll|
    DE4126233C1|1991-08-08|1992-09-17|Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De||
    FI95061C|1993-03-08|1995-12-11|Valmet Paper Machinery Inc|Method of calendering paper web and calender for application of the method|
    FI100013B|1993-03-22|1997-08-15|Valmet Paper Machinery Inc|Drying procedure and drying module and drying portions where applied, especially for a fast-moving paper machine|
    DE4415581C2|1994-05-04|1995-12-07|Voith Gmbh J M|Paper coating device|
    SE502817C2|1994-07-04|1996-01-22|Flaekt Ab|Device adapted to reduce the effects of a paper web's tendency to adhere to a drying cylinder in a paper machine|
    DE19731100A1|1997-07-19|1999-01-21|Voith Sulzer Papiermasch Gmbh|Web adhesion adjustment|DE19958867A1|1999-12-07|2001-07-12|Voith Paper Patent Gmbh|Fiber web drying station has controlled parameters for the drying blanket tension and the temp of the drying cylinders for a trouble-free web passage through the station at high speeds|
    DE10311993A1|2003-03-19|2004-10-14|Voith Paper Patent Gmbh|Process for treating a fibrous web|
    法律状态:
    1998-09-15| AS| Assignment|Owner name: VOITH SULZER PAPIERMASCHINEN GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KUSTERMANN, DR. MARTIN;REEL/FRAME:009465/0880 Effective date: 19980915 |
    2006-02-13| FPAY| Fee payment|Year of fee payment: 4 |
    2010-03-29| REMI| Maintenance fee reminder mailed|
    2010-08-02| SULP| Surcharge for late payment|Year of fee payment: 7 |
    2010-08-02| FPAY| Fee payment|Year of fee payment: 8 |
    2014-03-28| REMI| Maintenance fee reminder mailed|
    2014-08-20| LAPS| Lapse for failure to pay maintenance fees|
    2014-09-15| STCH| Information on status: patent discontinuation|Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
    2014-10-07| FP| Expired due to failure to pay maintenance fee|Effective date: 20140820 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE19741517||1997-09-20||
    DE19741517.2||1997-09-20||
    DE1997141517|DE19741517A1|1997-09-20|1997-09-20|Process for reducing the adhesion of a moist fibrous web to a rotating roller|
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