EP3022355A1 - Entoilage et procédé de fabrication d'un entoilage - Google Patents
Entoilage et procédé de fabrication d'un entoilageInfo
- Publication number
- EP3022355A1 EP3022355A1 EP14741853.7A EP14741853A EP3022355A1 EP 3022355 A1 EP3022355 A1 EP 3022355A1 EP 14741853 A EP14741853 A EP 14741853A EP 3022355 A1 EP3022355 A1 EP 3022355A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oriented
- machine direction
- yarns
- cmd
- fabric
- 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- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/0094—Belts
-
- 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
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D3/00—Woven fabrics characterised by their shape
- D03D3/04—Endless fabrics
-
- 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
- D21F1/0054—Seams thereof
Definitions
- the invention relates to a covering for use in a machine for producing a fibrous web, such as a paper or board web, according to the preamble of claim 1.
- the fabric is a dryer fabric for use in a dryer section of a machine for making a fibrous web.
- the invention further relates to the production of such a covering according to the preamble of claim 18.
- Fabrics are found in a paper or board machine in different positions and perform various tasks, which i.a. include the guidance and support of the fiber web as well as its drainage.
- forming fabrics are responsible for the Rouent camess für the press section, the fiber web is guided on press felts through nips, thereby further withdrawing the water contained in the fiber web, and in the dryer section, the transport through the machine and further drying of the fiber web with Support by a dryer.
- Dryer fabrics are usually formed in the form of textile surface structures, which consist either of plastic spirals, which are interlocked and interconnected by plug wires.
- An alternative form are webs of substantially mutually perpendicular crossing yarns that may be interwoven under different patterns.
- a disadvantage of known drying screens is in particular that their edges tend due to the manufacturing process to fraze and thereby stand out in the course of the operating time yarns and the fabric is separated.
- the object is achieved in terms of the covering by the characterizing features of claim 1 and with respect to the method for producing such a covering by the characterizing features of claim 18, respectively in combination with the generic features.
- the textile fabric is calendered by entry of energy only in marginal areas, which extend along the machine-oriented edges and / or along the oriented in the cross-machine direction edges, which in the marginal areas with the MD threads the CMD threads at least partially and / or in sections welded together and / or positively connected at their intersection points and the thickness and / or permeability of the fabric is reduced.
- the method comprises the following method steps: i) provision of a textile fabric, ii) cutting of the fabric along a predetermined cut in the machine direction and / or in the cross machine direction, iii) fusion of ends of the in Machine direction oriented yarns and / or fusing of the cross-machine direction oriented yarns with the machine oriented yarns to form a smooth cut edge.
- the MD threads are fused with the CMD threads in the calendered marginal areas at least partially and / or in sections to form a piece.
- a subsequent perforation may be made to approximate the permeability of the calendered marginal region to the permeability of the fabric outside the calendered marginal region.
- the at least one calendered marginal region of the fabric, which is formed along an edge oriented in the cross-machine direction is subsequently perforated. It is also conceivable that the at least one calendered marginal region of the fabric, which is formed along an edge oriented in the machine direction, is subsequently not perforated.
- the MD threads can be welded together with the CMD threads in the calendered marginal areas with at least sectionwise retention of the yarn shape.
- the calendered marginal regions may be calendered in thickness by a proportion of from 5 to 50%, preferably from 10 to 30%, of the original thickness of the fabric, i. compared to the uncalendered state, be reduced.
- the permeability can be reduced by 5 to 100%, preferably by 30 to 100% in the calendered marginal areas by the calendering the permeability of the fabric outside of the calendered marginal area or areas.
- the reduction of the permeability in the calendered marginal areas, which are formed on machine-oriented edges be greater than in the marginal areas formed along the cross-machine oriented edges, since in the region of a seam to be attached, the permeability expediently in Should be substantially that of the sheet outside the calendered marginal area or areas.
- the permeability in the calendered marginal regions, which are formed along the edges oriented in the cross-machine direction preferably deviates a maximum of 20%, preferably not more than 10%, from the permeability of the fabric outside of the calendered marginal region or regions.
- the width of the calendered marginal areas may be 5 to 50 mm.
- the pull-out force needed to pull out yarns oriented in the cross-machine direction can be increased by at least 10% over the required pull-out force of cross-machine direction yarns of the same fabric having uncalendered marginal regions in a calendered marginal region.
- the fabric is thus optimally protected against splitting in the edges oriented in the machine direction, while at the edges oriented in the cross-machine direction a secure sewing is possible even with attached seam elements under load absorption.
- the calendering can take place on one or both sides on a side facing the fiber web and / or on a side facing the machine.
- the suture members may be in the form of suture loops on at least one of the cross-machine oriented edges producible by weaving back at least some of the machine direction oriented yarns into the fabric and at least some backwoven portions of at least some of the MD yarns with CD yarns and or MD yarns in the calendered edge region of the at least one CMD-oriented edge welded together.
- the suture elements may be in the form of spirals or other suitable structures independent of the fabric, which on at least one calendered marginal area may be one of the structures shown in FIG.
- Machine transverse direction oriented edges are detachably or permanently arranged.
- a suture element such as, for example, in the applications WO2010 / 121360, WO2013 / 086609, WO2013 / 023272,
- WO201 1/127594 WO2014 / 075170 or WO1 1069258 is used.
- the suture elements can be arranged inseparably with the textile fabric on the at least one calendered marginal region by gluing and / or sewing and / or welding.
- the cross-machine direction oriented yarns may be load-bearing. This has the advantage that it is not necessary to form seam loops on the machine direction oriented yarns for sewing. Rather, the seam can be made very effective due to the secure anchoring of separate suture elements in terms of durability and low marking tendency.
- the thickness of the sheet may be reduced compared to outside the calendered marginal area, whereby viewed in the thickness direction of the fabric, the top and / or bottom of the fabric in the calendered marginal area opposite the calendered marginal Area is reset and the suture elements on the recessed side of the top and / or bottom is arranged.
- the covering can be connectable to one another by interlocking the seam elements at the edges oriented in machine transverse direction and inserting at least one plug wire into a channel formed by the entangled seam elements. As a result, the fabric can be installed and removed easily and quickly without elaborate design measures on the machine side.
- the yarns forming the fabric may be formed as monofilaments or multifilaments.
- the method can be carried out by means of a device for introducing energy, in particular by means of a rotating disc-shaped ultrasonic horn or a hot wedge.
- a surface calendering of the marginal regions, which are subsequently formed on both sides of the cut edges, can take place, which further method step is carried out simultaneously with the other method steps.
- the further method step can be carried out by means of an additional device guided in parallel for the introduction of energy, in particular by means of an additional ultrasound horn guided in parallel or a hot wedge guided in parallel.
- Fig. 1 is a highly schematic representation of an inventively designed fabric in a perspective view.
- a string 1 is shown in a schematic representation, which can be used in particular as a drying wire in a machine for producing a fibrous web such as a paper or board web.
- woven dryer fabrics used.
- Another embodiment may be made of spiral spirals, which are interlocked and interconnected by plug wires. This embodiment is not the subject of the present invention.
- the yarns 2, 3 can be formed in a known manner as mono- or multifilaments of PET, PPS, PCTA, polyamides, Kevlar or similar, known and suitable materials for said application in any cross-sectional shapes.
- the fabric 1 is in the form of a textile fabric, which are two edges 4, which are oriented in a machine direction - hereinafter referred to as MD - oriented and two edges 5, which in a cross-machine direction - hereinafter referred to as CMD - oriented.
- the fabric 1 can be closed by using sewing elements 6 in the machine to form a closed loop.
- the suture elements 6 can thereby formed integrally with the fabric 1 or provided as separate components and be carried out releasably or permanently with the fabric 1.
- the suture members 6 may be formed in the form of separate components, e.g. in the form of spirals, which can be suitably connected to the textile fabric at one or both edges 5.
- the compound can be made detachable or insoluble. It can gluing, welding, sewing or similar. come into use.
- the covering 1 is in marginal areas 7 which extend along the edges 4, 5, by appropriate measures, in particular calendering, treated so that a permeability and / or thickness of the fabric 1 is reduced compared to the untreated state.
- the width of the marginal areas 7 can be 5 to 50 mm.
- the reduction in thickness is preferably between 5 to 50%, particularly preferably 10 to 30% of the original thickness of the fabric 1.
- a reduction of the permeability of the fabric 1 by the calendering is 5 to 100%, preferably between 30 and 100%.
- the reduction in permeability is understandably greater in calendered marginal areas 7 formed on machine-oriented edges 4 than in FIGS calendered marginal areas 7 formed along the machine-transverse-oriented edges 5. This is due to the fact that no fiber web runs in the areas 7 oriented in the machine direction and accordingly the reduction of the permeability does not become noticeable here in terms of the quality of the end product.
- the marginal areas 7 can, for example, by energy input in the form of electromagnetic radiation, heat radiation o.ä. calendered.
- the energy input can be done by an ultrasonic device, in particular an ultrasonic horn, laser, hot wedge or similar devices.
- the yarns 2, 3 are connected to one another, since they are heated and, on the one hand, a softening of the material takes place, which leads to a better positive connection of the yarns 2, 3.
- a material bond that is to say a fusion of the yarns 2, 3 can also take place to a certain extent.
- Both MD-oriented yarns 2 and CMD-oriented yarns 3 are welded together, as well as the yarns 2, 3 oriented in the respective direction. The connection of the yarns takes place under the proviso that the energy input remains low enough so as not to lead to embrittlement of the material.
- the selected cross-sectional shape of the yarns 2, 3 should be maintained even after calendering.
- the calendering can be done either on one side of the fiber web or on the machine side facing the fabric 1 as well as two sides of each of the edges 4, 5.
- the measures mentioned are advantageous in several respects.
- an edge termination can be created by the energy input, which prevents yarns 2, 3 from being released from the textile fabric and thus can no longer separate them.
- damage to the fabric 1 as well as the machine can be prevented and in addition the service life of the fabric 1 can be increased.
- calendering of the edges 4 oriented in the machine direction allows a structuring of the peripheral regions 7, as a result of which it is possible to influence the aerodynamics of the fabric 1.
- the length of the backwoven yarns 2 can be reduced to a shorter distance, allowing faster production of the fabric 1.
- the stability of the seam loops is improved because calendering produces a compound of the yarns 2, 3, which reduces the risk of pulling the backwoven yarns 2.
- the calendering is also advantageous for the fixation of a separate sewing element 6 in that the calendered edge regions 7 are more stable and therefore a separate seam element 6 can be fixed more securely than on an uncalendered edge 5 of a clothing 1. Fraying of the CMD oriented yarns 3 is then almost impossible, since there is a positive and cohesive connection between the yarns 2 and 3.
- By connecting the yarns 2 and 3 with each other it is possible to make the oriented in the cross-machine direction yarns 3 load-bearing, without the formation of seam loops would be necessary.
- This load absorption is possible due to the welding due to calendering.
- the tensile force on the fabric 1 in the retracted state in the machine can thus be deflected to the oriented in the cross machine direction yarns 3.
- separate suture members 6 can be securely fastened without tearing the cross-machine direction oriented yarns 3 under load.
- the reduction of the thickness of the fabric 1 in the region of the edges 5 is advantageous if the seam elements 6 are present as separate components and are fixed to the fabric 1. Such components require space in the thickness direction of the fabric 1.
- a sewing element 6 can be fastened to the edge 5, for example, like a clip, without the covering 1 thereby becoming thicker.
- Another alternative embodiment is to arrange a band-shaped component as a suture element 6 either on one side or on the other side of the fabric 1. This can be prevented, for example, that unwanted noise emissions caused by the striking of the sewing element 6 on the drying cylinder of the paper or board machine.
- the marking tendency in the fibrous web is thus as low as the tendency to abrasion.
- the production of the fabric 1 can be done in a simple and time-consuming and labor-saving manner, since the calendering can be performed simultaneously with the preparation of the fabric 1.
- the fabric 1 is here as a flat fabric, which must be made up to the position where it is to be used, in length and width.
- the sections necessary for this purpose can, for example, by means of an ultrasonic horn, in particular by means of a rotating disk-shaped ultrasonic horn, or a hot wedge.
- the fabric 1 is cut to the necessary extent (possibly with some oversize to compensate for the shrinkage) and at the same time the edges 4, 5 are serged, so that fraying or severing is no longer possible.
- the ends of the yarns 2, 3 or the respective yarns 3, 2 extending transversely thereto are welded together.
- the calendering described above can optionally take place in a further working step or particularly advantageously in the same work step as cutting and overcasting, by guiding a second energy input device parallel to the ultrasonic horn or hot wedge and calendering the marginal regions 7.
- the second device may also be an ultrasonic horn, hot wedge, laser, or other suitable source of energy.
- the thus prepared fabric 1 can now be provided on the CMD-oriented edges 5 with seam elements 6, which, as described above, for example, can be formed as attachable to the edges 5 clips that are welded to the edges 5.
- seam loops are to be produced by back weaving, it makes sense first to form the seam loops and then to perform the calendering to stabilize the seam loops.
- the invention is not limited to the illustrated embodiment. In particular, a large selection of weave patterns and different materials for the yarns 2, 3 are conceivable and possible.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013214033.9A DE102013214033A1 (de) | 2013-07-17 | 2013-07-17 | Bespannung und Verfahren zum Herstellen einer Bespannung |
PCT/EP2014/065383 WO2015007844A1 (fr) | 2013-07-17 | 2014-07-17 | Entoilage et procédé de fabrication d'un entoilage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3022355A1 true EP3022355A1 (fr) | 2016-05-25 |
Family
ID=51212830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14741853.7A Withdrawn EP3022355A1 (fr) | 2013-07-17 | 2014-07-17 | Entoilage et procédé de fabrication d'un entoilage |
Country Status (5)
Country | Link |
---|---|
US (1) | US11332854B2 (fr) |
EP (1) | EP3022355A1 (fr) |
CN (1) | CN105378177A (fr) |
DE (1) | DE102013214033A1 (fr) |
WO (1) | WO2015007844A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017118222A1 (de) * | 2017-08-10 | 2019-02-14 | Voith Patent Gmbh | Maschine und verfahren zur herstellung einer faserstoffbahn |
CH715194A1 (de) * | 2018-07-23 | 2020-01-31 | Mammut Sports Group Ag | Textiles Lagenkonstrukt zur Herstellung eines Kleidungsstücks. |
CN113352634B (zh) * | 2021-06-09 | 2023-04-14 | 安徽华辰造纸网股份有限公司 | 一种造纸干网间的穿线方法以及压装设备 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1114602A (en) * | 1965-07-07 | 1968-05-22 | Scapa Dryers Ltd | Improvements relating to hinge seams for dryer felts and the like |
DE1930556A1 (de) * | 1969-06-16 | 1970-12-23 | Villforth Ver Metalltuch Fab | Siebgewebe,insbesondere zur Verwendung bei der Papierherstellung |
US4784190A (en) * | 1980-10-16 | 1988-11-15 | Huyck Corporation | Dryer fabric having longitudinal zones of different permeability |
JP3538253B2 (ja) * | 1995-02-22 | 2004-06-14 | 日本フイルコン株式会社 | 緯糸よりなる耳ホツレ防止部を形成した製紙用織物およびその製造方法 |
DE19540229C1 (de) * | 1995-10-17 | 1996-12-19 | Muehlen Sohn Gmbh & Co | Verfahren zum Herstellen eines endlosen Gewebebandes |
US5888915A (en) * | 1996-09-17 | 1999-03-30 | Albany International Corp. | Paper machine clothings constructed of interconnected bicomponent fibers |
US7514030B2 (en) * | 2002-12-30 | 2009-04-07 | Albany International Corp. | Fabric characteristics by flat calendering |
PT1749924E (pt) | 2005-08-04 | 2008-01-24 | Heimbach Gmbh & Co Kg | Tela de formação para um diapositivo de fabricar papel e processo para o fabrico de urna tal tela de formação |
US8088256B2 (en) * | 2007-09-05 | 2012-01-03 | Albany International Corp. | Process for producing papermaker's and industrial fabric seam and seam produced by that method |
CN101848801B (zh) * | 2007-09-05 | 2014-08-20 | 阿尔巴尼国际公司 | 造纸机和工业织物接缝的制造方法和由该方法制造的接缝 |
PT2055831E (pt) * | 2007-10-30 | 2011-09-01 | Muehlen Sohn Gmbh & Co | Correia têxtil com extremidades reduzidas na espessura |
GB2469651A (en) | 2009-04-21 | 2010-10-27 | Allan Richard Manninen | Seaming device for an industrial fabric |
CA2688168A1 (fr) | 2009-12-11 | 2011-06-11 | Richard Stone | Element de couture du type a charniere pour joindre les bouts d'un textile industriel |
CA2700767A1 (fr) | 2010-04-16 | 2011-10-16 | Allan Richard Manninen | Element de couture filamentaire pour un tissu industriel et tissu industriel cousu au moyen de cet element |
DE102011002498B4 (de) | 2011-01-11 | 2022-01-13 | Voith Patent Gmbh | Rissfester Rand für perforierte Folienbespannung |
CA2749477A1 (fr) | 2011-08-18 | 2013-02-18 | Allan R. MANNINEN | Element de couture profile pour textiles industriels |
CA2762349A1 (fr) | 2011-12-16 | 2013-06-16 | Allan R. MANNINEN | Element de couture non tisse multi-epingles |
CA2795208A1 (fr) | 2012-11-13 | 2014-05-13 | Allan R. MANNINEN | Element de couture pour textiles industriels et procede de fabrication |
-
2013
- 2013-07-17 DE DE102013214033.9A patent/DE102013214033A1/de not_active Withdrawn
-
2014
- 2014-07-17 EP EP14741853.7A patent/EP3022355A1/fr not_active Withdrawn
- 2014-07-17 WO PCT/EP2014/065383 patent/WO2015007844A1/fr active Application Filing
- 2014-07-17 CN CN201480039477.9A patent/CN105378177A/zh active Pending
- 2014-07-17 US US14/905,379 patent/US11332854B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2015007844A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2015007844A1 (fr) | 2015-01-22 |
CN105378177A (zh) | 2016-03-02 |
US20160160404A1 (en) | 2016-06-09 |
DE102013214033A1 (de) | 2015-01-22 |
US11332854B2 (en) | 2022-05-17 |
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Inventor name: ABRAHAM, JUERGEN Inventor name: KOECKRITZ, UWE Inventor name: WAN AHMAD NATHRI, WAN ZETI ZAFINA |
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