EP2241671A2 - Attelage de machine à papier - Google Patents

Attelage de machine à papier Download PDF

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Publication number
EP2241671A2
EP2241671A2 EP20100159088 EP10159088A EP2241671A2 EP 2241671 A2 EP2241671 A2 EP 2241671A2 EP 20100159088 EP20100159088 EP 20100159088 EP 10159088 A EP10159088 A EP 10159088A EP 2241671 A2 EP2241671 A2 EP 2241671A2
Authority
EP
European Patent Office
Prior art keywords
threads
fabric
intermediate layer
nonwoven
covering according
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.)
Withdrawn
Application number
EP20100159088
Other languages
German (de)
English (en)
Other versions
EP2241671A3 (fr
Inventor
Dr. Uwe Köckritz
Hubert Walkenhaus
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2241671A2 publication Critical patent/EP2241671A2/fr
Publication of EP2241671A3 publication Critical patent/EP2241671A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y10T442/494—Including a nonwoven fabric layer other than paper

Definitions

  • the invention relates to a covering for a paper, board or tissue machine according to the preamble of claim 1.
  • Generic coverings in particular press felts, often comprise, in addition to the known components such as the nonwoven structure and the basic structure providing the dimensional stability, further functional layers by which, for example, the rewet-wetting behavior or the damping behavior of the covering can be influenced.
  • a covering, in particular press felt, for a paper, board or tissue machine comprising a staple fiber-comprising nonwoven structure, which provides the paper and the running side of the fabric and with an embedded in the nonwoven structure load-bearing base structure comprising a warp knitting structure which has sewing threads and reinforcing threads extending in parallel with each other in length, which have a greater flexural rigidity than the sewing threads, wherein the sewing threads form stitches in which the reinforcing threads are incorporated to form the warp knit structure.
  • the invention is characterized in that an intermediate layer which is connected to the reinforcing threads by the sewing threads is arranged on the warp knit structure.
  • various functional layers can be combined with the load-bearing basic structure by means of a warp knitting method, so that the staple fibers are also connected to the basic structure via the sewing threads.
  • the solution according to the invention makes it possible to reduce the expenditure involved in processing the modules since process steps can be saved by combining different prefabricated modules to form a complete structure.
  • the inventive construction of the intermediate layer and warp knit structure shows a function improving the binding of the nonwoven structure to the basic structure.
  • the handling of the system can be positively influenced.
  • the intermediate layer is already connected to it during the production of the warp knit structure, which is why it does not have to be connected to the basic structure in a separate process step.
  • the intermediate layer and the warp knit structure extend over the entire width and length of the fabric.
  • a preferred embodiment of the invention provides that the intermediate layer is more compact than the nonwoven structure.
  • a compact is to be understood as meaning that less void volume is present in the intermediate layer than in the layer or as in each of the layers of the nonwoven structure. Due to the more compact formation of the intermediate layer relative to the nonwoven structure, it is possible that the intermediate layer assumes an additional and / or different function in the covering according to the invention compared with the nonwoven structure.
  • the intermediate layer is permeable.
  • the intermediate layer has a function which reduces or prevents re-wetting and / or a function which increases the attenuation.
  • the intermediate layer can be formed, for example, by a fleece and / or a film and / or a membrane and / or a fine fabric.
  • a fine tissue is to be understood as meaning a tissue whose longitudinal and transverse threads have a smaller diameter than the reinforcing threads. If the basic structure also comprises a longitudinal reinforcement module, then the longitudinal and transverse threads of the fabric should also have a smaller diameter than the threads forming the longitudinal reinforcement module.
  • an intermediate layer in one of the above-mentioned structures, it is, for example, conceivable that this is constructed by prefabricated part-width webs, which are arranged side by side to provide the intermediate layer on the entire width of the fabric in the transverse direction of the fabric, with mutually facing longitudinal edges the adjacent webs can be stacked against each other or partially overlap.
  • the fleece forming the intermediate layer preferably comprises a spunbonded nonwoven and / or a staple fiber nonwoven.
  • the fleece forming the intermediate layer is formed by a spunbonded nonwoven or a staple fiber nonwoven fabric.
  • the staple fiber fleece can be solidified or unconsolidated.
  • the nonwoven comprises polyurethane. If the nonwoven is a spunbonded nonwoven, then this may be formed in particular from polyurethane fibers. As an alternative to or in addition to polyurethane, the nonwoven may comprise or be formed from polyamide and / or polypropylene and / or polyester.
  • the reinforcing threads extend in length, in particular not curved but straight.
  • the reinforcing threads of the warp knit structure are weft threads.
  • the sewing threads form, in particular, rows of stitches arranged parallel to one another and extending substantially perpendicular to the weft threads, the weft threads being bound in stitches.
  • Such a warp knitting structure is, for example, in the German patent application DE 10 2008 043 855 described.
  • the reinforcing threads of the warp knit structure are warp threads.
  • the reinforcing threads are warp threads and weft threads.
  • the warp knit structure has in particular first and second sewing threads, wherein the first sewing threads run obliquely or transversely to the warp threads and the second sewing threads form in the longitudinal direction of the warp threads and these at least partially enveloping courses and wherein second sewing threads are integrated into stitches of the first sewing threads ,
  • first sewing threads run obliquely or transversely to the warp threads and the second sewing threads form in the longitudinal direction of the warp threads and these at least partially enveloping courses and wherein second sewing threads are integrated into stitches of the first sewing threads
  • Such a warp knitting structure is, for example, in the German patent application DE 10 2008 043 917 described.
  • the warp knit structure essentially provides the transverse stability of the fabric.
  • the reinforcing threads extend in their length obliquely to the longitudinal direction of the fabric, in particular in the transverse direction of the fabric.
  • the basic structure further comprises a longitudinal reinforcement module, which essentially provides the longitudinal stability of the fabric.
  • the longitudinal reinforcement module may, for example, have one or more longitudinal threads, in particular formed therefrom, which extend or extend substantially in the longitudinal direction of the fabric. If the longitudinal reinforcement module is formed from the longitudinal thread or the longitudinal threads, the longitudinal thread or the longitudinal threads can, for example, form a longitudinal thread layer, which extends longitudinally through the thread or wound longitudinally in the string and in the transverse direction of the string. Longitudinal threads is formed.
  • the Leksfadengelege preferably extends over the entire width and length of the fabric.
  • the clothing in the machine is seamed by the longitudinal thread or the longitudinal threads on the two longitudinal reinforcement module in Forming its length limiting ends seam loops or form, which can be brought together for endless making the fabric, thereby forming a connection channel through which a pintle is feasible.
  • the nonwoven structure is anchored significantly better in the basic structure by providing the intermediate layer connected to the warp knit structure by its sewing threads than in the generic coverings known from the prior art and since the seam area is particularly sensitive with regard to wear of the nonwoven structure, the invention Covering especially in the paper, board or Tissuemaschine seamless.
  • the above-mentioned nonwoven structure may be solidified or unconsolidated.
  • the FIG. 1 shows a warp knit structure 1 with an attached intermediate layer 2.
  • the warp knit structure 1 is formed by sewing threads 3 and mutually parallel in their length extending reinforcing threads 4, wherein the reinforcing threads 4 have a greater bending stiffness than the sewing threads 3.
  • the sewing threads 3 form stitches in which the reinforcing threads 4 are integrated to form the warp knit structure 1.
  • the sewing threads 3 form rows of stitches arranged parallel to one another and extending substantially perpendicular to the reinforcing threads 4, into which mesh the reinforcing threads 4 are bound.
  • the intermediate layer 2 which is connected to the reinforcing threads 4 by the sewing threads 3, is arranged on the warp knit structure 1.
  • the intermediate layer 2 is presently formed by a spunbonded nonwoven, which in turn is formed by polyurethane fibers 6.
  • the spunbonded nonwoven comprising polyurethane fibers has a basis weight in the range of 20-400 g / m 2.
  • the reinforcing threads 4 of the warp knit structure 1 are weft threads which extend in the transverse direction CMD of the press felt 7 and in this case run straight in their length.
  • the press felt for a paper, board or tissue machine shown has a nonwoven structure comprising staple fibers, which is formed by a nonwoven layer 8 at the side, a paper side nonwoven layer 9 and a middle nonwoven layer 10.
  • the press felt further has a base structure 11 embedded in the nonwoven structure, which is made of the material from the FIG. 1 known warp knit structure 1 with Intermediate layer 2 and from a formed by a scrim of longitudinal threads 12 longitudinal reinforcement module 13 is formed.
  • the intermediate layer 2 is permeable and in this case more compact than each of the layers 8-10 of the nonwoven structure.
  • the intermediate layer has a function which reduces the rewetting and also a function which increases the damping.
  • the warp-knit structure 2 essentially provides the transverse stability of the press felt 7.
  • the longitudinal reinforcement module 13 also substantially provides the longitudinal stability of the press felt 7.
  • the functionality of the press felt can be extended by the modular layers.
  • the influence on the rewetting can be adjusted by suitable flow control.
  • a selection of, for example, polyurethane nonwoven fabric allows targeted influence on the recovery or the elasticity of the felt.

Landscapes

  • Knitting Of Fabric (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
EP20100159088 2009-04-16 2010-04-06 Attelage de machine à papier Withdrawn EP2241671A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910002433 DE102009002433A1 (de) 2009-04-16 2009-04-16 Papiermaschinenbespannung

Publications (2)

Publication Number Publication Date
EP2241671A2 true EP2241671A2 (fr) 2010-10-20
EP2241671A3 EP2241671A3 (fr) 2013-12-25

Family

ID=42320038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100159088 Withdrawn EP2241671A3 (fr) 2009-04-16 2010-04-06 Attelage de machine à papier

Country Status (4)

Country Link
US (1) US8414742B2 (fr)
EP (1) EP2241671A3 (fr)
CN (1) CN101886348A (fr)
DE (1) DE102009002433A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012013438A1 (fr) * 2010-07-29 2012-02-02 Voith Patent Gmbh Procédé de fabrication d'une bande pour une machine à fabriquer du matériau en bande, en particulier du feutre de presse
WO2012140046A1 (fr) * 2011-04-13 2012-10-18 Voith Patent Gmbh Procédé de production d'un module, en particulier d'un module sans fin, pour l'habillage d'une machine à papier, et module sans fin associé
CN111164260A (zh) * 2017-09-29 2020-05-15 福伊特专利有限公司 网毯及其制造方法以及纤维无纺布

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9827696B2 (en) 2011-06-17 2017-11-28 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
EP2723568B1 (fr) 2011-06-23 2017-09-27 Fiberweb, LLC Article multicouches perméable à la vapeur d'eau, mais essentiellement imperméable à l'eau
WO2012178027A2 (fr) 2011-06-23 2012-12-27 Fiberweb, Inc. Article multicouches perméable à la vapeur d'eau, mais essentiellement imperméable à l'eau
US9765459B2 (en) 2011-06-24 2017-09-19 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article
CN103963362A (zh) * 2013-02-05 2014-08-06 圣州企业股份有限公司 经针扎工序的多层垫材结构
CN106192526B (zh) * 2016-08-24 2017-12-08 四川环龙技术织物有限公司 一种具备高抗性的复合工业过滤织物结构
EP3348708B1 (fr) * 2018-04-23 2020-06-10 Voith Patent GmbH Toile pour machine à papier et procédé pour sa fabrication
DE102019124681A1 (de) * 2019-09-13 2020-08-20 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Faserstoffbahn

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008043855A1 (de) 2008-11-19 2010-05-20 Voith Patent Gmbh Papiermaschinenbespannung und Verfahren zu deren Herstellung
DE102008043917A1 (de) 2008-11-20 2010-05-27 Voith Patent Gmbh Pressfilz und Verfahren zu seiner Herstellung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290653B1 (fr) * 1987-05-14 1990-04-11 Thomas Josef Heimbach GmbH & Co. Bande de matériaux
US6723208B1 (en) * 2000-10-05 2004-04-20 Albany International Corp. Method for producing spiral wound paper machine clothing
US7303656B2 (en) * 2003-07-02 2007-12-04 Albany International Corp. Low permeability textile substrate for a two-sided coated product
JP2006144149A (ja) * 2004-11-17 2006-06-08 Ichikawa Co Ltd 抄紙搬送フェルトおよび該抄紙搬送フェルトを備えた抄紙機のプレス装置
DE102005023390A1 (de) * 2005-05-20 2006-11-23 Voith Patent Gmbh Papiermaschinenbespannung
US20080248279A1 (en) * 2007-04-04 2008-10-09 Sanjay Patel Paper machine fabrics

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008043855A1 (de) 2008-11-19 2010-05-20 Voith Patent Gmbh Papiermaschinenbespannung und Verfahren zu deren Herstellung
DE102008043917A1 (de) 2008-11-20 2010-05-27 Voith Patent Gmbh Pressfilz und Verfahren zu seiner Herstellung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012013438A1 (fr) * 2010-07-29 2012-02-02 Voith Patent Gmbh Procédé de fabrication d'une bande pour une machine à fabriquer du matériau en bande, en particulier du feutre de presse
WO2012140046A1 (fr) * 2011-04-13 2012-10-18 Voith Patent Gmbh Procédé de production d'un module, en particulier d'un module sans fin, pour l'habillage d'une machine à papier, et module sans fin associé
CN111164260A (zh) * 2017-09-29 2020-05-15 福伊特专利有限公司 网毯及其制造方法以及纤维无纺布

Also Published As

Publication number Publication date
US20100263820A1 (en) 2010-10-21
EP2241671A3 (fr) 2013-12-25
US8414742B2 (en) 2013-04-09
DE102009002433A1 (de) 2010-10-21
CN101886348A (zh) 2010-11-17

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