EP0193075A1 - Verfahren zum Endlosmachen eines mehrlagigen Entwässerungsbandes, insbesondere eines Papiermachernassfilzes - Google Patents

Verfahren zum Endlosmachen eines mehrlagigen Entwässerungsbandes, insbesondere eines Papiermachernassfilzes Download PDF

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Publication number
EP0193075A1
EP0193075A1 EP86102036A EP86102036A EP0193075A1 EP 0193075 A1 EP0193075 A1 EP 0193075A1 EP 86102036 A EP86102036 A EP 86102036A EP 86102036 A EP86102036 A EP 86102036A EP 0193075 A1 EP0193075 A1 EP 0193075A1
Authority
EP
European Patent Office
Prior art keywords
ply
canvas
plies
connection
batt
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
EP86102036A
Other languages
English (en)
French (fr)
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EP0193075B1 (de
Inventor
Marcel Dufour
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.)
COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
Original Assignee
COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
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 COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA filed Critical COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
Priority to AT86102036T priority Critical patent/ATE44989T1/de
Publication of EP0193075A1 publication Critical patent/EP0193075A1/de
Application granted granted Critical
Publication of EP0193075B1 publication Critical patent/EP0193075B1/de
Expired 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
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/10—Seams thereof
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/904—Paper making and fiber liberation with specified seam structure of papermaking belt
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/19—Sheets or webs edge spliced or joined

Definitions

  • the present invention relates to the connection of two sections of a composite wiping strip, and in particular of a wet-end felt for stationery.
  • Such a strip comprises on the one hand a canvas of woven, stiff and mechanically resistant threads, to withstand the tensioning forces of the strip and maintain intervals of passages for a liquid to be expelled, and on the other hand a sheet made up of fibers. thin and flexible interwoven to form a soft surface allowing pressure to be applied to a deformable sheet to wring it out without marking it.
  • this strip is installed on the rollers in open form but must then be looped on elf even before its continuous service, or if sections of separate strips must succeed one another, the problem arises the connection of two sections. It can be resolved in a known manner with respect to the canvas. And it is also known to stop the plies of flexible fibers, at the two ends to be connected, so as to show, after the connection of the scrim, neither gap between these two plies nor covering
  • the object of the present invention is in particular to obtain good continuity between two such plies after the connection of the scrims.
  • the composite wiping strip two sections of which must be connected
  • a stationery felt which is advantageously manufactured and installed in the form of a strip having two ends, and which is then used, after connection of these ends, in the form of a tight band circulating in a closed loop.
  • a felt thus connected can be called "junction felt”.
  • the sheet is then transported, still on a felt circulating around rollers, in a drying zone where water is evacuated by evaporation under the action of heat, part of the steam passing through the felt.
  • junction felts in this part too, and we have endeavored not to create any significant excess thickness or under-thickness of the felt in the connection area.
  • this flap and the ply on the second section to be connected are cut, over the entire thickness of the plies and over the entire width of the felt, so that, when the connection of the canvas has been made and when lowers the flap to cover the connecting line of the canvas, the edge of the flap coincides with the edge of the second ply to be connected, that is to say that of the second section of the felt, along a ply connecting line. This avoids any excess or any defect in the ply material in the vicinity of the connection
  • connection line of the plies is disposed behind that of connection of the scrims, with respect to the direction of circulation of the felt in service. It indeed appears desirable that, when the felt passes between two pressure rollers, the force component applied provisionally rearward by these rollers does not risk displacing the free end of the flap towards its attachment to the rest of the first ply , which would form a fold that would mark the sheet of paper.
  • a needling is carried out to fix the flap to the canvas on either side of the connecting line of the canvas. It is also indicated, as an alternative, that the flap can be glued to the canvas.
  • the figures in the document above show that the cutting and connection plane of the two plies is inclined relative to the vertical, that is to say that the connection line of the plies appears more back at the top of the sheets as at their bottom, and there is in fact a sheet connection area whose longitudinal extension appears to be of the order of half the thickness of the sheets.
  • the present invention more particularly aims to avoid the damaging effects that may have in service the irregularities of a composite wiping strip, in particular of a stationery felt, in a connection zone between two successive sections of this strip. .
  • Figure 1 shows the wet end of a stationery making newsprint, the direction of view being parallel to the axes of the spin rollers.
  • Figures 2, 3, 4 and 5 show side views of the connection area of a wet-end felt used in the stationery of Figure 1, in successive stages of the first embodiment of the method according to the invention , to connect two end sections of this felt previously engaged on the rollers of Figure 1, to form a felt closed loop of this figure.
  • Figures 6 and 7 show side and partial top views, respectively, of a needling apparatus for effecting the final sharpening of the method according to the invention.
  • FIGs 8, 9 and 10 show views similar to those of Figures 2, 3, 4 and 5, but according to the second mode mentioned above of implementation of the invention-The modes of implementation which will be described more particularly include the provisions previously mentioned according to the invention.
  • a stationery producing newspaper paper has the following provisions
  • a permeable fabric 2 circulates on rollers such as 4 and 6 after having taken liquid paper pulp from which the water has flowed. It thus forms an inconsistent sheet 8 whose dry matter content is of the order of 20% and which arrives according to arrow 10.
  • a felt of wet part 12 It is taken from this canvas by a felt of wet part 12, by means of a roller 14.
  • a first pair of pressure rollers 16, 18 ensures a first spin.
  • a second damp felt 20 separates this sheet from the roller 18.
  • a second pair of rollers 22, 24 provides a second spin.
  • the sheet is driven by the roller 24, of polished granite, to a third pressing zone formed by this roller and a roller 26 on which a third felt 28 circulates.
  • rollers 30, 32, 34 direct the sheet 8, in an arrow 36, towards a drying zone, not shown.
  • the circulation speed can go up to 2000 meters per minute -
  • the pressures ensuring the spinning can go up to 1100 kN per centimeter of width of the felt between rollers whose diameter can be between 0.4 and 2 m approximately . They cannot be reduced under penalty of reducing the efficiency of the spin and increasing the energy consumption in the drying zone which follows it. Under these conditions any appreciable variation in thickness of the felt causes an indelible mark on the sheet 8 - According to FIG.
  • a felt such as the felt 1 2 which receives a sheet which is still very damp and soft comprises a scrim 40 consisting for example of polyamide threads whose diameter is of the order of 0.8 mm, and a sheet 4 2, for example 3 mm thick in the absence of compression, and made up of needled fibers on themselves and then on the canvas. These fibers are also made of polyamide and have for example a diameter less than 0, 1 mm. The density of the sheet is for example 0.230 g / cr r F.
  • This felt is delivered to the stationery and installed around the rollers in the form of an open strip of the desired length. This length is not limited by the dimensions of the weaving looms that make the canvas. These two felt end sections are then connected to form a closed loop which is subsequently tensioned.
  • a first of these sections comprises a first felt scrim 44 and a first ply 46, the second portion having a second felt 4 canvas 6, and a second web 50.
  • a flap 52 is formed at the end of the first ply, omitting the needling of the ply on the canvas over the corresponding length.
  • each of the two scrims was formed with loops such as 54 distributed along the width of the felt with their centers arranged along a scaffold connection line.
  • the flap 52 is raised, their two connecting lines are brought into coincidence, the loops of one section passing between those of the other, and a connecting rod 56 is introduced into all these loops according to the common connection line.
  • This rod will generally be stiffer than the wide threads of the canvas. Its diameter is for example 1 mm.
  • the weaving of the canvas and this rod are chosen so that the thickness of the canvas is little changed in the connection area.
  • connection methods can be used, for example in the case where the canvas is made up of propellers whose axes are arranged along its width, which follow one another longitudinally while interpenetrating and which are joined by stiff wires extending parallel to their axes in the interpenetration zones.
  • the connecting rod can be identical to these stiff wires.
  • the flap 52 and the end of the second ply 50 are cut, for example with a razor blade, possibly going slightly forwards while going down, according to two cutting planes parallel to the width of the felt and such that, if the flap is lowered, the two cutting planes, and therefore the two edges of the two plies in these planes, come into coincidence.
  • the flap is lowered and pressed on the combed end of the second sheet.
  • FIGS. 5, 6 and 7. The above-mentioned final needling operation is shown in FIGS. 5, 6 and 7. It is carried out using a portable jigsaw 62 on the market. In place of the saw blade of this apparatus, a board 64 of 1.5 x 2.5 cm has been mounted in which two rows of three vertical needles such as 66 projecting down have been fixed. The vertical reciprocating movement has, for example, an amplitude of 3 cm and the needles in the high position have their tips about 1 cm above the continuous sheet being formed. These needles are of the type usually used for needling, for example example with a triangular section and edges locally deformed to form barbs which entrain the fibers in their vertical movement to entangle them.
  • This needling is carried out over the entire connection zone until a thickness and compressibility of the ply are approximately equal to those of the ply on either side over the whole of this zone. This thickness and compressibility vary together and can be properly appreciated by passing your fingers over and next to this area.
  • the guide plate 68 of the device 62 ensures the verticality of the needling.
  • the final needling with three distinct functions one is the fixing of the flap to the canvas, the other is the restoration of the mechanical continuity of the web with respect to horizontal forces, and the third is the standardization of the vertical compressibility of the sheet.
  • the sheet comprises several layers, each of which is formed from several needled webs one on the other. These layers are laid on the canvas previously described. The number of these layers is typically two as shown, but may be three. There are more precisely two first layers of first and second level 70 and 72 respectively, above the first canvas 44, and two second layers of first and second level 74 and 76 respectively, above the second canvas 48.
  • the needling of the first two layers 70 and 72 has been omitted in an area which should form with these two layers two first and second level flaps 78 and 80, which allow access to the scrim connection line.
  • the needling of the second second level layer 76 has also been omitted to allow this layer to be raised to cut it without cutting the second first level layer.
  • connection of the two sections of canvas 44 and 48 is carried out as in the first embodiment described above.
  • the layers are cut at each level (Fig. 9) so that after lowering the flaps the apparent continuity of each layer is ensured, that is to say so that at each level the edge of the first layer comes coincidence with that of the second layer.
  • the two cutting lines that is to say the connecting lines of layers of the two levels are chosen at the ends of the envisaged connection zone, (or in the vicinity if the preferred arrangement is adopted below).
  • the connecting line of the intermediate level would be made in the middle of this area.
  • combing is carried out at each level as previously indicated in the first embodiment of the invention, which lengthens the connection area.
  • the present invention is particularly advantageous in the case of the production of cartons.
  • a type of stationery felt used in this case is said to be "long taker” (in English “long bottom felt” or “long top felt)”.
  • the formation of the flap by razor cutting for example, is difficult to carry out and compromises the service life or even the quality of service of the felt, this because this flap has a fiber density too low to hold (for keep its shape and dimensions).
  • the invention makes it possible to use a junction felt.
  • the invention also appears particularly useful in the case of the manufacture of cotton wool (very light sheet: from 1 5 to 30 g / m 2 ) because in this case the discontinuity even moderate brought by a cutting of the sheet of a junction felt can create a relatively large variation in the consistency of the sheet produced.
  • the present invention allows in this case the use of a junction felt as a lifter, boarder and frictionneur ".

Landscapes

  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Basic Packing Technique (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Replacement Of Web Rolls (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP86102036A 1985-02-19 1986-02-18 Verfahren zum Endlosmachen eines mehrlagigen Entwässerungsbandes, insbesondere eines Papiermachernassfilzes Expired EP0193075B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102036T ATE44989T1 (de) 1985-02-19 1986-02-18 Verfahren zum endlosmachen eines mehrlagigen entwaesserungsbandes, insbesondere eines papiermachernassfilzes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8502349A FR2577581B1 (fr) 1985-02-19 1985-02-19 Procede de raccordement de deux troncons de bande d'essorage composite, notamment de feutre de partie humide de papeterie.
FR8502349 1985-02-19

Publications (2)

Publication Number Publication Date
EP0193075A1 true EP0193075A1 (de) 1986-09-03
EP0193075B1 EP0193075B1 (de) 1989-07-26

Family

ID=9316408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102036A Expired EP0193075B1 (de) 1985-02-19 1986-02-18 Verfahren zum Endlosmachen eines mehrlagigen Entwässerungsbandes, insbesondere eines Papiermachernassfilzes

Country Status (10)

Country Link
US (2) US4683624A (de)
EP (1) EP0193075B1 (de)
JP (1) JPS61245395A (de)
AT (1) ATE44989T1 (de)
DE (1) DE3664650D1 (de)
ES (1) ES8704571A1 (de)
FI (1) FI83248C (de)
FR (1) FR2577581B1 (de)
NO (1) NO171735C (de)
ZA (1) ZA861240B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2611764A1 (fr) * 1987-03-02 1988-09-09 Cofpa Procede de fabrication d'un feutre avec bavette
EP0709508A1 (de) * 1994-10-25 1996-05-01 Schuller International, Inc. Verfahren zur Herstellung einer Decke mit gleicher Dicke

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61252391A (ja) * 1985-04-25 1986-11-10 市川毛織株式会社 抄紙用フエルトの製造方法
JPS63167199U (de) * 1987-04-20 1988-10-31
US4824525A (en) * 1987-10-14 1989-04-25 Asten Group, Inc. Papermaking apparatus having a seamed wet press felt
US4940630A (en) * 1987-10-14 1990-07-10 Asten Group, Inc. Base fabric structures for seamed wet press felts
US4892781A (en) * 1987-10-14 1990-01-09 Asten Group, Inc. Base fabric structures for seamed wet press felts
US4902383A (en) * 1988-04-05 1990-02-20 Asten Group, Inc. Method of making a papermaker's felt with no flap seam
US4883096A (en) * 1988-05-04 1989-11-28 Asten Group, Inc. Seam design for seamed felts
US5053109A (en) * 1988-05-04 1991-10-01 Asten Group, Inc. Single layer seamed papermakers fabric
US4846231A (en) * 1988-05-04 1989-07-11 Asten Group, Inc. Seam design for seamed felts
US4991630A (en) * 1989-04-10 1991-02-12 Asten Group, Inc. Single layer pin seam fabric having perpendicular seaming loops and method
GB8826008D0 (en) * 1988-11-07 1988-12-14 Albany Research Uk Modified seam felt
US5361466A (en) * 1993-10-18 1994-11-08 Schuller International, Inc. Method of forming a blanket of uniform thickness
US5657797A (en) * 1996-02-02 1997-08-19 Asten, Inc. Press felt resistant to nip rejection
FI101090B (fi) * 1996-09-09 1998-04-15 Tamfelt Oy Ab Menetelmä viirakudoksen sauman valmistamiseksi ja viirakudos
FI101047B (fi) * 1996-09-09 1998-04-15 Tamfelt Oy Ab Menetelmä suodatinpussin valmistamiseksi ja suodatinpussi
US5904187A (en) * 1997-10-22 1999-05-18 Albany International Corp. Seam integrity in multiple layer/multiple seam press fabrics
US6213164B1 (en) * 1999-03-11 2001-04-10 Geschmay Corporation Pintle seamed press felt
US20080092980A1 (en) * 2005-08-26 2008-04-24 Bryan Wilson Seam for papermachine clothing
US7789998B2 (en) * 2007-02-09 2010-09-07 Voith Patent Gmbh Press fabric seam area
FI7901U1 (fi) * 2007-03-20 2008-06-25 Tamfelt Pmc Oy Kuivatusviira ja kuivatusviiran sauma-alue
WO2017127449A1 (en) * 2016-01-19 2017-07-27 Schaefer Emily B Footwear with felting transition between materials
CN114098223A (zh) 2016-01-19 2022-03-01 耐克创新有限合伙公司 具有材料间的刺绣过渡部的鞋类

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108733A2 (de) * 1982-11-02 1984-05-16 Nordiskafilt Ab Filze mit Kettelnaht zum Einsatz in der Presspartie an Papiermaschinen und Verfahren zu deren Herstellung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB992895A (de) * 1963-01-11 1900-01-01
DE1956412A1 (de) * 1969-11-10 1971-06-03 Marx Gmbh J J Verfahren zum Verbinden der Enden eines zugfesten Vliesfilzes
US4141388A (en) * 1977-03-23 1979-02-27 Albany International Corporation Paper machine dryer fabric
US4279676A (en) * 1979-09-06 1981-07-21 Morrison Company, Inc. Process of making a belting joint
US4403632A (en) * 1981-03-19 1983-09-13 Albany International Corp. Corrugator belt with high air permeability
DE3114790A1 (de) * 1981-04-11 1982-10-28 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum herstellen einer knotenlosen fadenverbindung durch spleissen
US4369081A (en) * 1981-08-31 1983-01-18 Albany International Corp. Method of securing a foam layer to a belt
DE3404544A1 (de) * 1984-02-09 1985-08-14 Fa. Carl Veit, 7320 Göppingen Spiralsieb fuer papiermaschinen
US4958673A (en) * 1985-02-19 1990-09-25 Asten Group, Inc. Papermaking machine and a seamed papermaker's fabric

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108733A2 (de) * 1982-11-02 1984-05-16 Nordiskafilt Ab Filze mit Kettelnaht zum Einsatz in der Presspartie an Papiermaschinen und Verfahren zu deren Herstellung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2611764A1 (fr) * 1987-03-02 1988-09-09 Cofpa Procede de fabrication d'un feutre avec bavette
US4842925A (en) * 1987-03-02 1989-06-27 Asten Group, Inc. Process to manufacture a felt with flap and a felt produced thereby
EP0709508A1 (de) * 1994-10-25 1996-05-01 Schuller International, Inc. Verfahren zur Herstellung einer Decke mit gleicher Dicke

Also Published As

Publication number Publication date
EP0193075B1 (de) 1989-07-26
FR2577581B1 (fr) 1987-03-06
ZA861240B (en) 1986-10-29
ES552177A0 (es) 1987-04-01
ES8704571A1 (es) 1987-04-01
FI860710A (fi) 1986-08-20
FI83248C (fi) 1991-06-10
NO171735B (no) 1993-01-18
NO860600L (no) 1986-08-20
US4683624A (en) 1987-08-04
DE3664650D1 (en) 1989-08-31
FI860710A0 (fi) 1986-02-17
NO171735C (no) 1993-04-28
ATE44989T1 (de) 1989-08-15
JPS61245395A (ja) 1986-10-31
FR2577581A1 (fr) 1986-08-22
FI83248B (fi) 1991-02-28
US5082532A (en) 1992-01-21

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