EP0349779A2 - Tissu à deux couches pour l'utilisation dans la partie humide d'une machine à papier - Google Patents

Tissu à deux couches pour l'utilisation dans la partie humide d'une machine à papier Download PDF

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Publication number
EP0349779A2
EP0349779A2 EP89110287A EP89110287A EP0349779A2 EP 0349779 A2 EP0349779 A2 EP 0349779A2 EP 89110287 A EP89110287 A EP 89110287A EP 89110287 A EP89110287 A EP 89110287A EP 0349779 A2 EP0349779 A2 EP 0349779A2
Authority
EP
European Patent Office
Prior art keywords
threads
longitudinal
longitudinal threads
transverse
cross
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.)
Granted
Application number
EP89110287A
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German (de)
English (en)
Other versions
EP0349779A3 (fr
EP0349779B1 (fr
Inventor
Fritz Vöhringer
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.)
F. OBERDORFER SIEBTECHNIK GMBH
Original Assignee
F Oberdorfer Siebtechnik 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 F Oberdorfer Siebtechnik GmbH filed Critical F Oberdorfer Siebtechnik GmbH
Publication of EP0349779A2 publication Critical patent/EP0349779A2/fr
Publication of EP0349779A3 publication Critical patent/EP0349779A3/fr
Application granted granted Critical
Publication of EP0349779B1 publication Critical patent/EP0349779B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to a double fabric as a screen fabric for the wet end of a paper machine according to the preamble of claim 1.
  • sieve fabrics are known for stability, uniformity of water permeability, surface smoothness, number of stitches / cm and the like. The like. Made extraordinarily high demands.
  • the highest possible number of wearing points on the paper side of the fabric is also sought, and the highest possible wear volume on the running side of the fabric, because the surface quality of the paper to be produced and the like. a. also depends on the number of wearing points and the lifespan of the fabric on the volume of wear. The greater the volume of wear, the longer the sieve service life.
  • US Pat. No. 3,127,308 proposes a fine upper fabric in a single weave (linen binding dung) with a three-twill weave in such a way that the longitudinal threads of the lower fabric also cross individual transverse threads of the fine, simple upper fabric at certain points.
  • Such fabrics are called double or multiple fabrics with a connection in the technical language.
  • the production of suitable double fabrics of this type as forming fabrics has encountered difficulties, however, because the connection of the thick longitudinal threads of the lower fabric in the fine upper fabric causes such severe disturbances that faultless paper production has not been possible.
  • a double-layer screen fabric is known, which is shown in the attached drawing figure 1 and in which only a part of the longitudinal threads I, II, and preferably every second longitudinal thread II not only in the upper layer III, but also integrates into the lower layer IV of the cross threads. Since with these sieve fabrics each longitudinal thread I and II is involved in the binding of the surface, i.e. the paper side of the sieve, the longitudinal threads II, which bind in both transverse thread layers, have to be weaved by a separate warp thread roller because of their longer length.
  • the object of the invention is therefore to combine the advantages of the double-layer fabrics, which are provided with only one longitudinal thread system, and the advantages of multiple fabrics, which have at least two longitudinal thread systems, without having to take over the disadvantages shown.
  • a double fabric as a screen fabric which consists of two sets of longitudinal threads and at least one upper and one lower layer of transverse threads, the first set of longitudinal threads being woven only with the upper layer of transverse threads and the second set of longitudinal threads both interwoven with the lower layer of transverse threads and at least partially with the upper layer of transverse threads, the two sets of longitudinal threads form a repeating weave pattern with the upper layer of transverse threads in which at least some of the upper transverse threads are traversed by at least three successive longitudinal threads and then by at least three three successive longitudinal threads are crossed.
  • At least two of the at least three successive longitudinal threads belong to the first set and one to the second set, and the latter longitudinal thread of the second set only crosses an upper transverse thread within the weaving pattern (repeat), while the longitudinal threads of the first set belong at least once within the Cross the weave pattern over two consecutive upper cross threads.
  • This construction ensures that the thickness of the overall fabric, that of the known double fabrics is often more than 50% larger than in double-layer fabrics, is significantly reduced so that it corresponds to the thickness of comparable double-layer fabrics.
  • the clear separation and spacing of the lower and upper fabric layer as an inevitable consequence of the use of separate binding threads is eliminated in the double fabric according to the invention, which also avoids the disadvantages of too high a fabric thickness, namely the dragging of water as well as strong relative movements in the fabric body due to an excessive water storage volume when passing through the roller system of the wet end due to constant bending alternating stresses.
  • the double fabric as a screen fabric for the wet end of a paper machine for dewatering and forming a paper web consists of three sets of longitudinal threads and at least one upper and one lower layer of transverse threads, the first set of longitudinal threads only with the upper layer of transverse threads, the second set Longitudinal threads with two layers of transverse threads and the third set of longitudinal threads only woven with the lower layer of transverse threads
  • the solution to the above object is achieved in that the three sets of longitudinal threads with the upper layer of transverse threads form a repeating weaving pattern in which at least one part the upper transverse threads are traversed by at least three successive longitudinal threads and then crossed by at least three successive longitudinal threads, of which at least two belong to the first set and one to the second set of longitudinal threads, and this longitudinal thread of the second set only one upper thread n Cross thread crosses within the weaving pattern (repeat), while the longitudinal threads of the first set cross at least once in the weaving pattern two successive upper cross threads.
  • first set of longitudinal threads with the upper layer of transverse threads form a weaving pattern in which at least some of the upper transverse threads alternately pass under and cross the longitudinal threads of the first set in pairs.
  • the latter embodiment can be further developed in that in the weaving pattern another part of the upper transverse threads alternately crosses the longitudinal threads of the first set underneath or crosses over, or that those upper transverse threads that cross alternately under and cross the longitudinal threads of the first set one or two longitudinal threads of the first set are offset with respect to each other.
  • Another advantageous fabric construction variant follows the one in which another part of the upper transverse threads in the weave pattern alternately passes underneath and crosses the longitudinal threads of the first set, in that those upper transverse threads which alternately pass underneath and under the longitudinal threads of the first set cross, in each case one longitudinal thread of the first set are offset with respect to one another.
  • the lower transverse threads can span three successive longitudinal threads of the second set and all the longitudinal threads of the first set downwards, as seen from the underside of the fabric.
  • two successive ones one belonging to the second set of longitudinal threads and the other to the third set of longitudinal threads, can be bound in such a way that they are not bound in the same transverse threads of the lower layer.
  • the fabric can be designed according to a further embodiment so that the longitudinal threads of the second set at the points where they cross an upper transverse thread, a plane that lies below the plane which is affected by the longitudinal threads of the first set at those points where these longitudinal threads of the first set cross the upper transverse threads.
  • the two planes can be spaced apart from one another by at least 15% of the largest diameter of the longitudinal threads of the first or second set.
  • the double fabric or screen fabric shown in FIG. 1 is known and was mentioned at the beginning. It is therefore not explained in more detail here.
  • the screen fabric shown in section in FIG. 2 is woven with eight strands and is shown in FIG. 4 in a top view of the paper side and in FIG. 5 in a top view of the running side.
  • This screen fabric has a total of approximately 75 longitudinal threads of the first set 10 to 13; 10 'to 13', and the second set 20 to 23; 20 'to 23', per cm of polyester with a diameter of 0.15 mm.
  • Its upper cross threads 40 to 47 are also made of polyester and have a diameter of 0.13 to 0.15 mm, while the diameter of the lower cross threads 50 to 53 is 0.20 mm or 0.22 mm and every second cross thread is made of polyamide can.
  • the distance between the two planes is essentially generated by the type of weave and not by the formation of so-called "wells" as they occur in known double fabrics.
  • this screen fabric In the ground state, this screen fabric has a thickness of approximately 0.63 to 0.56 mm and is therefore not significantly thicker than the known double-layer fabrics of corresponding fineness.
  • the alternation of longer and shorter floats of the transverse threads 40 to 47 on the paper side results in a low-marking surface which enables very favorable fiber placement and fiber distribution of the paper stock.
  • this screen fabric Despite the relatively high longitudinal thread density and the relatively high number of transverse threads on the paper side of approx. 34 / cm, this screen fabric still has a good air permeability of approx. 2,200 l / m2. s.
  • a construction is realized which is characterized in that the two sets of longitudinal threads 10 to 13 and 20 to 23 designated with 1 and 2 with the upper layer of transverse threads 40 to 47 form a repeating weaving pattern in which at least a portion of the upper transverse threads 41, 43, 45, 47 are traversed by five successive longitudinal threads and then crossed by three successive longitudinal threads, two of the last three successive longitudinal threads being the first set 1 and the one belong to the second set of 2 and the latter longitudinal thread of the second set only crosses an upper transverse thread within the weaving pattern or repeat, while the longitudinal threads of the first set twice inside Cross two consecutive upper cross threads half of the weaving pattern.
  • FIG. 4 show how and where the longitudinal threads 20 to 23 of the second set 2 are incorporated with reference to FIG. 5.
  • those upper transverse threads 41, 43, 45, 47, which alternately pass underneath and cross the longitudinal threads of the first set 1 are offset in relation to one another by one longitudinal thread of the first set 1.
  • those upper transverse threads 40, 42, 44, 46 which alternately pass underneath and cross the longitudinal threads of the first set 1 in order to offset one longitudinal thread of the first set 1 in relation to one another.
  • the hatched locations of the longitudinal threads 20 to 23 of the second set are arranged so that they the transverse threads 41, 43, 45, 47 of the upper layer on the Cross hatched points in FIG. 4, the circles a and b drawn in FIGS. 4 and 5 being intended to identify the assignment or position of the two layers to one another.
  • FIG. 6 From the top view shown in FIG. 6 on the bottom or running side of an embodiment of the screen fabric according to the invention, which is shown in FIG. 4
  • the top view of the top or paper side is to be assigned, the circles denoted by a and c marking the positions of the two fabric layers relative to one another, resulting in a further embodiment of the screen fabric construction.
  • This embodiment is characterized in that not only those upper transverse threads 41, 43, 45, 47 which cross the longitudinal threads of the first set 1 alternately under and cross, are offset by one longitudinal thread of the first set 1 in relation to each other, but that the lower transverse threads 60 to 67 span seven consecutive longitudinal threads of the second longitudinal thread set 2 and all the longitudinal threads of the first set 1 downward, as seen from the underside of the fabric.
  • the lower or running cross threads 60 to 67 form very long floats, which further increases the available wear volume.
  • a further embodiment of the screen fabric forming the double fabric according to the invention is shown, in which a third set of longitudinal threads 3, consisting of the longitudinal threads 30 to 33, is used, the transverse threads 50 'to 53 only with the lower layer 'Is woven.
  • the three sets of longitudinal threads 1, 2, 3 with the upper layer of transverse threads 40 'to 47' also form a repeating weave pattern in which at least part of the upper transverse threads 41 ', 43', 45 ', 47' is traversed by five successive longitudinal threads and then crossed by three successive longitudinal threads, two of the latter longitudinal threads belonging to the first set 1 and one to the second longitudinal thread set 2, and the longitudinal thread of the second set crossing only one upper transverse thread within the weaving pattern or repeat, while the longitudinal threads of the first Set twice within the weaving pattern or repeat cross two consecutive upper cross threads.
  • Fig. 7 shows a further plan view of the upper or paper-side layer of an embodiment of the screen fabric comparable to the plan view of Fig. 4, in which those upper transverse threads 41 ', 43', 45 ', 47', which alternate the longitudinal threads of the first set 1 Cross underneath and in pairs, each offset by two longitudinal threads of the first set 1 with respect to one another, and those upper transverse threads 40, 42, 44, 46; 40 ', 42', 44 ', 46', which alternately pass under and cross the longitudinal threads of the first set 1, in each case offset by one longitudinal thread of the first set 1 with respect to one another.
  • FIG. 8 shows the lower or running layer of the fabric belonging to the upper or paper-side layer of the screen fabric shown in FIG. 7, the circles denoted by d and e in the last two drawing figures indicating the position of the two layers relative to one another.
  • the longitudinal threads can have different diameters and can consist of different materials.
  • the longitudinal threads of the second set 2 can touch a plane at the points 7 where they cross an upper transverse thread. which lies below the plane which is affected by the longitudinal threads of the first set 1 at those points 8 (FIG. 2) at which these longitudinal threads of the first set the upper transverse threads cross.
  • the two planes can be spaced apart from one another by at least 15% of the largest diameter of the longitudinal threads 10 to 13, 20 to 23 of the first or second set.

Landscapes

  • Paper (AREA)
  • Woven Fabrics (AREA)
EP89110287A 1988-07-07 1989-06-07 Tissu à deux couches pour l'utilisation dans la partie humide d'une machine à papier Expired - Lifetime EP0349779B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3823085A DE3823085A1 (de) 1988-07-07 1988-07-07 Doppelgewebe als siebgewebe fuer die nasspartie einer papiermaschine
DE3823085 1988-07-07

Publications (3)

Publication Number Publication Date
EP0349779A2 true EP0349779A2 (fr) 1990-01-10
EP0349779A3 EP0349779A3 (fr) 1991-12-04
EP0349779B1 EP0349779B1 (fr) 1994-11-30

Family

ID=6358204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89110287A Expired - Lifetime EP0349779B1 (fr) 1988-07-07 1989-06-07 Tissu à deux couches pour l'utilisation dans la partie humide d'une machine à papier

Country Status (5)

Country Link
EP (1) EP0349779B1 (fr)
AT (1) ATE114750T1 (fr)
DE (2) DE3823085A1 (fr)
ES (1) ES2065941T3 (fr)
FI (1) FI92080C (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5098522A (en) * 1990-06-29 1992-03-24 The Procter & Gamble Company Papermaking belt and method of making the same using a textured casting surface
WO1993010304A1 (fr) * 1991-11-22 1993-05-27 Albany Nordiskafilt Aktiebolag Tissu pour machines a papier ou analogue
US5260171A (en) * 1990-06-29 1993-11-09 The Procter & Gamble Company Papermaking belt and method of making the same using a textured casting surface
US5275700A (en) * 1990-06-29 1994-01-04 The Procter & Gamble Company Papermaking belt and method of making the same using a deformable casting surface
US5554467A (en) * 1990-06-29 1996-09-10 The Proctor & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
WO2005106115A1 (fr) * 2004-03-30 2005-11-10 Andreas Kufferath Gmbh & Co. Kg Toile notamment toile de machine a papier
CN103849976A (zh) * 2014-03-25 2014-06-11 吴江市亨德利纺织厂 一种双层面料及其织造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89819C (fi) * 1992-02-24 1993-11-25 Tamfelt Oy Ab Torkvira foer pappersmaskin

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3036409A1 (de) * 1980-09-26 1982-05-13 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Doppellagiges sieb fuer den blattbildungsteil einer papiermaschine
EP0164434A1 (fr) * 1984-06-14 1985-12-18 F. Oberdorfer GmbH & Co. KG Industriegewebe-Technik Toile pour machine à papier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3036409A1 (de) * 1980-09-26 1982-05-13 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Doppellagiges sieb fuer den blattbildungsteil einer papiermaschine
EP0164434A1 (fr) * 1984-06-14 1985-12-18 F. Oberdorfer GmbH & Co. KG Industriegewebe-Technik Toile pour machine à papier

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5098522A (en) * 1990-06-29 1992-03-24 The Procter & Gamble Company Papermaking belt and method of making the same using a textured casting surface
US5624790A (en) * 1990-06-29 1997-04-29 The Procter & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
US5260171A (en) * 1990-06-29 1993-11-09 The Procter & Gamble Company Papermaking belt and method of making the same using a textured casting surface
US5275700A (en) * 1990-06-29 1994-01-04 The Procter & Gamble Company Papermaking belt and method of making the same using a deformable casting surface
US5364504A (en) * 1990-06-29 1994-11-15 The Procter & Gamble Company Papermaking belt and method of making the same using a textured casting surface
US5554467A (en) * 1990-06-29 1996-09-10 The Proctor & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
US5458693A (en) * 1991-11-22 1995-10-17 Albany Nordiskafilt Ab Fabric for papermaking machines and the like
AU654890B2 (en) * 1991-11-22 1994-11-24 Albany Nordiskafilt Ab Fabric for papermaking machines
WO1993010304A1 (fr) * 1991-11-22 1993-05-27 Albany Nordiskafilt Aktiebolag Tissu pour machines a papier ou analogue
WO2005106115A1 (fr) * 2004-03-30 2005-11-10 Andreas Kufferath Gmbh & Co. Kg Toile notamment toile de machine a papier
JP2007535619A (ja) * 2004-03-30 2007-12-06 アンドレアス クフェラト ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト ワイヤ織物、特に抄紙用ワイヤ織物
US7585394B2 (en) 2004-03-30 2009-09-08 Andreas Kufferath Gmbh & Co. Kg Wire cloth, in particular paper making wire cloth
CN1930342B (zh) * 2004-03-30 2010-06-02 安德里茨技术资产管理有限公司 丝网
JP4874952B2 (ja) * 2004-03-30 2012-02-15 アンドリッツ テクノロジー アンド アセット マネージメント ゲゼルシャフト ミット ベシュレンクテル ハフツング ワイヤ織物、特に抄紙用ワイヤ織物
CN103849976A (zh) * 2014-03-25 2014-06-11 吴江市亨德利纺织厂 一种双层面料及其织造方法

Also Published As

Publication number Publication date
ES2065941T3 (es) 1995-03-01
EP0349779A3 (fr) 1991-12-04
DE3823085A1 (de) 1990-01-11
ATE114750T1 (de) 1994-12-15
FI893301A0 (fi) 1989-07-06
EP0349779B1 (fr) 1994-11-30
FI893301A (fi) 1990-01-08
DE58908676D1 (de) 1995-01-12
FI92080B (fi) 1994-06-15
FI92080C (fi) 1996-07-08

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