EP2729611A1 - Structure plane thermiquement non fixée pour une toile en spirale et procédé de fabrication d'une toile en spirale - Google Patents

Structure plane thermiquement non fixée pour une toile en spirale et procédé de fabrication d'une toile en spirale

Info

Publication number
EP2729611A1
EP2729611A1 EP12728273.9A EP12728273A EP2729611A1 EP 2729611 A1 EP2729611 A1 EP 2729611A1 EP 12728273 A EP12728273 A EP 12728273A EP 2729611 A1 EP2729611 A1 EP 2729611A1
Authority
EP
European Patent Office
Prior art keywords
spirals
spiral
sheet
free cross
wires
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
EP12728273.9A
Other languages
German (de)
English (en)
Other versions
EP2729611B1 (fr
Inventor
Oliver Maier
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.)
Wuerttembergische Spiralsiebfabrik GmbH
Original Assignee
Wuerttembergische Spiralsiebfabrik 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 Wuerttembergische Spiralsiebfabrik GmbH filed Critical Wuerttembergische Spiralsiebfabrik GmbH
Priority to PL12728273T priority Critical patent/PL2729611T3/pl
Priority to SI201231111T priority patent/SI2729611T1/sl
Publication of EP2729611A1 publication Critical patent/EP2729611A1/fr
Application granted granted Critical
Publication of EP2729611B1 publication Critical patent/EP2729611B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D21F1/0072—Link belts
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor

Definitions

  • the invention relates to a thermally unfixed fabric for a spiral wire with a plurality of juxtaposed and adjacent intermeshing spirals, and with a plurality of plug wires, which are inserted for connecting the spirals with each other in overlapping spiral sections of the adjacent spirals, wherein in the assembled state of the spirals in the region of each spiral a free cross-section is provided, and a method of manufacturing a spiral screen having a plurality of spirals which are joined together in overlapping manner, with a plurality of plug-in wires, which are inserted into overlapping regions of adjacent spirals and thus connect the spirals to a sheet together, and with a plurality of packing, the be introduced into free cross sections of the spirals of the fabric, wherein before or after the introduction of the filling body, the sheet undergoes a thermofixing process.
  • Thermally unfixed fabrics which are used for the production of spiral fabrics, in particular for use in paper machines, are generally known. Such fabrics are composed of several juxtaposed spirals, each made of a plastic monofilament endless.
  • the helical spirals are dimensioned identically to each other and overlap each other with lateral spiral turn portions inserted in the adjacent spiral turn portions of the laterally succeeding spirals.
  • the adjacent spirals are preferably designed alternately clockwise and counterclockwise.
  • plug wires are provided, which are preferably also made of a plastic monofilament. The plug wires are inserted in superimposed spiral sections of two adjacent spirals in the longitudinal direction of the spirals, whereby the adjacent spirals are connected to each other.
  • the sheet After joining the sheet of a corresponding number of spirals and pigtails, the sheet is subjected to a heat setting process, in which the sheet is brought to a predetermined calender tension and due to the effect of temperature shrinkage in the material itself builds up tension, whereby the thickness of the Sheet is reduced.
  • a heat setting process In order to reduce the air permeability of the fabric and of the spiral wire, filler particles are introduced into the free cross-sections of the spirals from one end face, which largely fill the free cross-section of each spiral.
  • a heat-setting of the fabric takes place.
  • the fillers can be introduced before or after thermosetting - depending on the embodiment.
  • the object of the invention is to provide a thermally unfixed sheet for a spiral wire and a method for producing a spiral wire through which a lower basis weight for the spiral wire and an improved contact surface to the transported goods are achieved.
  • the ratio of the clear width to the clear height of each free cross-section of the spirals of the sheet is in a range between 1, 01 and 2.50. Particularly advantageous are width / height ratios between 1, 30 and 1, 80.
  • the spirals are made of round or flat wires. Both round and flat wires are plastic wires. The use of flat wires further increases the contact area for the goods to be transported.
  • the round or flat wires are designed as plastic monofilaments.
  • the spirals have an outer width in the range between 6.50 and 8.60 mm and an overall height in the range between 2.50 and 3.50 mm.
  • the round wires have a diameter ranging from 0.40 mm to 0.70 mm.
  • the flat wires and / or the plug wires are preferably provided with cross-sectional dimensions between 0.40 and 0.80 mm. These dimensions are particularly advantageous for improving the solution according to the invention.
  • the object underlying the invention is achieved in that the spirals are joined together to form the sheet that before the thermofixing for the free cross sections of the fabric interconnected spirals one in the Plane of the sheet seen width, which is greater than a clear height of the free Cross section of each spiral.
  • packing can already be inserted into the unfixed sheet and are held so securely by the design of the free cross sections in unfixed state between the spiral turns of the fabric that in a subsequent heat setting no unwanted twist or twist of the packing, which are also referred to as cored wires , can occur. This results in a high quality finished spiral screen is achieved.
  • 1 a and 1 b show a known sheet for a known spiral wire
  • FIGS. 1 a and 1 b illustrates the different dimensions
  • Fig. 3 in an enlarged view schematically a cross section through the sheet according to Fig. 2b according to 2a, but with two packing and
  • a thermally still unfixed sheet 1 according to FIGS. 2a to 4 is provided for a spiral wire which is used in the paper industry.
  • the sheet 1 consists of a plurality of spirals 2, which are dimensioned identical to each other.
  • Each spiral 2 is wound endlessly from a plastic monofilament, which can be designed as a round wire or as a flat wire.
  • each spiral has an oval-like cross-section.
  • the individual spirals 2 are brought into juxtaposition with each other alternately in each reversed winding direction and inserted with the side edge regions of their turns between corresponding side edge regions of the turns of the adjacent spiral 2.
  • FIGS. 2 a and 3 it can be seen that, as seen through this superimposition of the spiral sections of the adjacent spirals 2 in the longitudinal direction of the spirals 2, channel sections are formed through which the plug wires 3 are pushed or pulled in the longitudinal direction so as to join the adjacent spirals 2 together connect to.
  • the plug wires 3 are also made of plastic and designed in the illustrated embodiment as a monofilament.
  • the plug wires 3 are designed in a straight line.
  • the so-formed composite of spirals 2 and 3 wires defines the fabric 1, which is needed for the production of the spiral wire.
  • a basically identical construction has a sheet V according to FIGS. 1 a and 1 b, as is known from the prior art.
  • Significant difference in the known from the prior art fabrics V is that, in contrast to the inventive sheet 1, the coils 2 'have a substantially smaller width in relation to their height than in the inventive sheet 1 according to FIGS. 2a to 4.
  • the spirals 2 with respect to the spirals 2 'of greater width according to FIGS. 2a to 4 are combined with the plug wires 3, which are dimensioned identically to the plug wires 3' in the prior art. This results in a free cross-section 4, whose width B (FIG. 3) for the inventive sheet 1 in the region of each spiral.
  • thermofixing process the fabrics are thermally stressed in addition to a Strechkung and thereby shrink to a smaller thickness with simultaneously increased width extension.
  • each free section 4 corresponds to the clearance between opposite side edge portions of the spiral sections of the adjacent coils 2.
  • the clear height H of the free section 4 is determined by the size spacing between upper and lower coil sections of the respective spiral 2 defined. In the illustrated embodiment, this largest distance in the middle of the respective free cross-section 4 is provided.
  • an outer width A and an overall height G of each spiral 2 are defined.
  • Particularly preferred dimensions of the spirals 2 of a fabric 1 according to the invention according to FIGS. 2a to 4 have an overall height G in the range between 2.50 mm and 3.50 mm and a preferred outside width A in the range from 6.50 mm to 8.60 mm.
  • Particularly advantageous spirals 2 are provided with a ratio of outer width A to total height G of 6.75 mm x 2.90 mm, 7.00 mm x 3.00 mm and 8.40 mm x 3.40 mm.
  • the plastic monofilament for Preparation of the spirals 2 is preferably made of polyethylene terephthalate (PET) and is preferably carried out either as a flat wire with cross-sectional dimensions of 0.43 mm x 0.70 mm or as round wire with a diameter of 0.60 mm or 0.70 mm.
  • the plug wires 3 are also made of PET and designed as plastic monofilaments. They are preferably designed as round wires with a preferred diameter of 0.70 mm.
  • the tolerances in the outer width A and the total height G of the spirals 2 may preferably differ in a tolerance range of + 0.20 mm.
  • Bone-shaped filling bodies F which are largely adapted to the cross-sectional dimensions of the respective free cross-section 4, can be introduced into the free cross-sections 4 thus formed in the longitudinal direction in cross-section, as can be seen with reference to FIGS. 3 and 4.
  • the packing F can also be made of plastic as rectilinear cored wires with a cross section of FIG. 3. Seen in plan view of the sheet 1 remain after introduction of the filler F only small air passage openings L, which can be seen with reference to FIG. 4 and between the lateral edges of the packing F and the plug wires 3 and the corresponding superposed spiral sections of the adjacent spirals 2 lie ,
  • the packing F are also in the illustrated embodiment, before the heat-setting of the fabric 1 in the free cross sections 4 of the composite of spirals 2 and 3 plug wires inserted.
  • a thermofixing process which is basically known for the production of spiral screens, in which the fabric 1 is exposed to a specific stress in the longitudinal direction in addition to thermal stress.
  • the sheet 1 by self-shrinkage of the plastic spirals 2 itself builds tension, so that the sheet 1 is stretched and thereby reduces the thickness and it is thermally fixed in this flatter state.

Landscapes

  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Woven Fabrics (AREA)
  • Springs (AREA)
  • Reinforced Plastic Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laminated Bodies (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une toile en spirale comprenant plusieurs spirales qui sont assemblées en se chevauchant, plusieurs fils qui sont enfichés dans des zones de chevauchement de spirales voisines et relient ainsi les spirales les unes aux autres en une structure plane, et plusieurs corps de remplissage qui sont introduits dans les parties libres des spirales, la structure plane étant soumise à un processus de thermofixage avant ou après l'introduction des corps de remplissage. Selon l'invention, les spirales sont assemblées en une structure plane de telle manière qu'il en résulte, avant le processus de thermofixage, pour les parties libres des spirales reliées les unes aux autres en une structure plane, une largeur libre, vue dans le plan de la structure plane, qui est supérieure à une hauteur libre de la partie libre de chaque spirale.
EP12728273.9A 2011-07-06 2012-06-18 Structure plane thermiquement non fixée pour une toile en spirale et procédé de fabrication d'une toile en spirale Active EP2729611B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL12728273T PL2729611T3 (pl) 2011-07-06 2012-06-18 Nieutrwalony termicznie płaski wytwór dla sita spiralnego i sposób wytwarzania sita spiralnego
SI201231111T SI2729611T1 (sl) 2011-07-06 2012-06-18 Toplotno nefiksirana ploščata struktura za spiralno sito in postopek za izdelavo spiralnega sita

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011078724A DE102011078724A1 (de) 2011-07-06 2011-07-06 Thermisch unfixiertes Flächengebilde für ein Spiralsieb und Verfahren zum Herstellen eines Spiralsiebes
PCT/EP2012/061559 WO2013004474A1 (fr) 2011-07-06 2012-06-18 Structure plane thermiquement non fixée pour une toile en spirale et procédé de fabrication d'une toile en spirale

Publications (2)

Publication Number Publication Date
EP2729611A1 true EP2729611A1 (fr) 2014-05-14
EP2729611B1 EP2729611B1 (fr) 2017-08-02

Family

ID=46319774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12728273.9A Active EP2729611B1 (fr) 2011-07-06 2012-06-18 Structure plane thermiquement non fixée pour une toile en spirale et procédé de fabrication d'une toile en spirale

Country Status (15)

Country Link
US (1) US9085852B2 (fr)
EP (1) EP2729611B1 (fr)
JP (1) JP6204351B2 (fr)
CN (1) CN103827389B (fr)
BR (1) BR112014000096B1 (fr)
CA (1) CA2839824C (fr)
DE (1) DE102011078724A1 (fr)
DK (1) DK2729611T3 (fr)
ES (1) ES2642270T3 (fr)
MX (1) MX2014000002A (fr)
NO (1) NO2729611T3 (fr)
PL (1) PL2729611T3 (fr)
PT (1) PT2729611T (fr)
SI (1) SI2729611T1 (fr)
WO (1) WO2013004474A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014205422A1 (de) * 2014-03-24 2015-07-09 Voith Patent Gmbh Bespannung
EP3018253B1 (fr) * 2014-11-04 2016-09-21 Karl Mayer Textilmaschinenfabrik GmbH Dispositif et procédé de fabrication de tamis à spirales
DE102019215404A1 (de) 2019-10-08 2021-04-08 Württembergische Spiralsiebfabrik Gmbh Kern-Mantel-Faden, Flächengebilde, Verfahren zum Herstellen eines Kern-Mantel-Fadens, Verfahren zum Herstellen eines Flächengebildes

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419751C3 (de) * 1974-04-24 1982-01-21 Kerber, geb. Poth, Hella, 6731 Weidenthal Drahtgliederband z.B. für Papiermaschinen
DE3228033A1 (de) * 1982-07-27 1984-02-02 Siteg Siebtechnik GmbH, 4422 Ahaus Spirale grosser laenge zur herstellung eines spiralbandes und verfahren und vorrichtung zum einbringen von fuellmaterial in diese spiralen
US5364692A (en) * 1993-12-28 1994-11-15 Scapa Group, Plc Heat set spiral link fabric with modified stuffer yarns
DE4403501A1 (de) * 1994-02-04 1995-08-10 Siteg Siebtech Gmbh Spiralgliederband niedriger Luftdurchlässigkeit und Verfahren zu seiner Herstellung
JP3497636B2 (ja) * 1995-10-25 2004-02-16 シキボウ株式会社 抄紙用スパイラルカンバス
JP3194865B2 (ja) * 1996-05-30 2001-08-06 敷島紡績株式会社 工業用スパイラルベルト及びその製造方法
US7575659B2 (en) * 2004-12-15 2009-08-18 Albany International Corp. Spiral fabrics
DE102007055759A1 (de) * 2007-12-11 2009-06-18 Voith Patent Gmbh Spiralgliederband

Also Published As

Publication number Publication date
SI2729611T1 (sl) 2017-12-29
CN103827389A (zh) 2014-05-28
EP2729611B1 (fr) 2017-08-02
CN103827389B (zh) 2016-03-02
JP6204351B2 (ja) 2017-09-27
WO2013004474A1 (fr) 2013-01-10
NO2729611T3 (fr) 2017-12-30
PL2729611T3 (pl) 2018-01-31
MX2014000002A (es) 2014-07-09
PT2729611T (pt) 2017-11-14
BR112014000096A2 (pt) 2017-02-14
CA2839824C (fr) 2018-10-30
ES2642270T3 (es) 2017-11-16
US9085852B2 (en) 2015-07-21
BR112014000096B1 (pt) 2021-04-06
CA2839824A1 (fr) 2013-01-10
DK2729611T3 (en) 2017-10-30
DE102011078724A1 (de) 2013-01-10
BR112014000096A8 (pt) 2020-10-27
US20140130998A1 (en) 2014-05-15
JP2014525993A (ja) 2014-10-02

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