EP2729611B1 - 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 Download PDF

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Publication number
EP2729611B1
EP2729611B1 EP12728273.9A EP12728273A EP2729611B1 EP 2729611 B1 EP2729611 B1 EP 2729611B1 EP 12728273 A EP12728273 A EP 12728273A EP 2729611 B1 EP2729611 B1 EP 2729611B1
Authority
EP
European Patent Office
Prior art keywords
spirals
sheet
spiral
wires
section
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.)
Active
Application number
EP12728273.9A
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German (de)
English (en)
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EP2729611A1 (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.)
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Publication date
Application filed by Wuerttembergische Spiralsiebfabrik GmbH filed Critical Wuerttembergische Spiralsiebfabrik GmbH
Priority to SI201231111T priority Critical patent/SI2729611T1/sl
Priority to PL12728273T priority patent/PL2729611T3/pl
Publication of EP2729611A1 publication Critical patent/EP2729611A1/fr
Application granted granted Critical
Publication of EP2729611B1 publication Critical patent/EP2729611B1/fr
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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
    • D21F1/0072—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 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.
  • filler particles are introduced into the free cross sections of the spirals from one end face, which fill the free cross section of each spiral largely.
  • 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.
  • a thermally unfixed fabric 1 after the Fig. 2a to 4 is intended for a spiral screen used in the paper industry.
  • the thermally unfixed sheet 1 which is described in more detail below, still undergoes a thermofixing process, is cut to length for the desired surface dimensioning and straightened and fixed at its marginal edges, in particular by a welding process.
  • 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. As with the cross-sectional views of the Fig. 2a and 3 can be seen, 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.
  • this results in the adjacent spirals two each winding-wise alternately overlapping spiral sections.
  • Fig. 2a 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 respectively are pushed or pulled through the plug wires 3 in the longitudinal direction so as to connect the adjacent spirals 2 to one another.
  • 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.
  • continuous cross-section 4 are created after preparation of the composite of spirals 2 and 3 plug wires in the region of each spiral 4 in the longitudinal direction of the fabric 1, ie in the longitudinal direction of the plug wires 3.
  • the free cross sections 4 are towards their sides, ie seen in the plane of the sheet 1, bounded by corresponding outer edge regions of the spiral sections of the left and right adjacent spirals 2. Upwards and downwards, the free cross-sections 4 are bounded respectively by upper and lower winding sections of the respective spiral 2, which at the same time also define an upper and a lower contact surface of the fabric 1 and thus of the later spiral wire.
  • a basically identical construction has a sheet 1 'according to the Fig. 1 a and 1 b, as known in the art.
  • Significant difference in the known from the prior art sheet 1 ' is that in contrast to the inventive sheet 1, the spirals 2' have a much smaller width in relation to their height than in the inventive sheet 1 according to the Fig. 2a to 4 .
  • the spirals 2 with respect to the spirals 2 'greater width according to Fig. 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 (for the inventive sheet 1 in the region of each spiral.
  • each free cross-section 4 corresponds to the clear distance between opposite side edge regions of the spiral sections of the adjacent spirals 2.
  • the clear height H of the free cross-section 4 is defined by the size spacing between upper and lower turn sections of the respective spiral 2. In the illustrated embodiment, this largest distance in the middle of the respective free cross-section 4 is provided.
  • Based on Fig. 3 is still an outer width A and a total height G of each spiral 2 defined.
  • Particularly preferred dimensions of the spirals 2 of a fabric 1 according to the invention after the Fig. 2a to 4 have a total height G in the range between 2.50 mm and 3.50 mm and a preferred outer width A in the range of 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 within a tolerance range of ⁇ 0.20 mm.
  • Bone-shaped filling bodies F which are adapted to a large extent 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 Fig. 3 and 4 is recognizable.
  • the packing F can also be made of plastic as rectilinear cored wires with a cross-section according to Fig. 3 be executed. Seen in the plan view of the sheet 1 remain after introduction of the filler F only small air passage openings L, which are based on the Fig. 4 can be seen and are between the lateral edges of the filler body F and the plug wires 3 and the corresponding superimposed spiral sections of the adjacent spirals 2.
  • 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)
  • Reinforced Plastic Materials (AREA)
  • Springs (AREA)
  • Woven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)

Claims (8)

  1. Structure plane thermiquement non-fixée (1) pour un tamis en spirale avec une pluralité de spirales (2) juxtaposées et mutuellement engageant avec des spirales adjacentes ainsi qu'avec une pluralité de fils de tige (3) insérés dans des sections de spirale chevauchants des spirales (2) adjacentes pour relier les spirales (2) l'une à l'autre, une section transversale libre étant prévue dans le domaine de chaque spirale (2) à l'état assemblé des spirales (2), caractérisée en ce qu'une largeur intérieure (B) de chaque section transversale libre (4), s'étendant dans le plan de la structure plane (1), est supérieure à la hauteur intérieure (H) de chaque section transversale libre (4) s'étendant entre des enroulements en spirale situés au-dessus et au-dessous de chaque spirale (2).
  2. Structure plane thermiquement non-fixée selon la revendication 1, caractérisée en ce que le rapport entre largeur intérieure (B) et hauteur intérieure (H) de chaque section transversale libre (4) des spirales (2) de la structure plane (1) est compris dans une plage entre 1,01 et 2,0.
  3. Structure plane thermiquement non-fixée selon la revendication 1 ou 2, caractérisée en ce que les spirales (2) sont fabriquées de fils ronds ou aplatis.
  4. Structure plane thermiquement non-fixée selon la revendication 3, caractérisée en ce que les fils ronds ou aplatis sont conçus sous forme de monofilaments.
  5. Structure plane thermiquement non-fixée selon au moins une des revendications précédentes, caractérisée en ce que les spirales (2) présentent une largeur extérieure (A) compris dans une plage entre 6,50 et 8,60 mm et une hauteur totale (G) compris dans une plage entre 2,50 et 3,50 mm.
  6. Structure plane thermiquement non-fixée selon la revendication 3 ou 4, caractérisée en ce que les fils ronds présentent un diamètre compris dans une plage de 0,40 mm à 0,70 mm.
  7. Structure plane thermiquement non-fixée selon au moins une des revendications précédentes, caractérisée en ce que les fils aplatis et/ou les fils de tige (3) présentent des dimensions de section transversale entre 0,40 et 0,80 mm.
  8. Procédé de fabrication d'un tamis en spirale avec une pluralité de spirales (2) qui sont assemblées l'une à l'autre en se chevauchant, avec une pluralité de fils de tige (3) qui sont insérés dans des domaines se chevauchant de spirales (2) adjacentes et pour ainsi relier les spirales (2) l'une à l'autre en formant une structure plane (1), avec une pluralité de corps de remplissage (F) apportés dans des sections transversales libres des spirales (2), la structure plane (1) étant soumise à une procédure de thermofixage avant ou après l'apport des corps de remplissage (F), caractérisé en ce que les spirales (2) sont assemblées pour former la structure plane (1) de telle manière que, avant la procédure de thermofixage, on obtient pour chacune des sections transversales libres (4) des spirales (2) assemblées l'une à l'autre dans la structure plane (1) une largeur intérieure (B), vu dans le plan de la structure plane (1), qui est supérieure à une hauteur intérieure (H) de la section transversale libre (4) de chaque spirale (2).
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
SI201231111T SI2729611T1 (sl) 2011-07-06 2012-06-18 Toplotno nefiksirana ploščata struktura za spiralno sito in postopek za izdelavo spiralnega sita
PL12728273T PL2729611T3 (pl) 2011-07-06 2012-06-18 Nieutrwalony termicznie płaski wytwór dla sita spiralnego i sposób wytwarzania sita spiralnego

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 EP2729611A1 (fr) 2014-05-14
EP2729611B1 true 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN103827389B (zh) 2016-03-02
US9085852B2 (en) 2015-07-21
DK2729611T3 (en) 2017-10-30
WO2013004474A1 (fr) 2013-01-10
JP2014525993A (ja) 2014-10-02
DE102011078724A1 (de) 2013-01-10
BR112014000096A8 (pt) 2020-10-27
NO2729611T3 (fr) 2017-12-30
MX2014000002A (es) 2014-07-09
CA2839824A1 (fr) 2013-01-10
BR112014000096B1 (pt) 2021-04-06
SI2729611T1 (sl) 2017-12-29
PT2729611T (pt) 2017-11-14
CA2839824C (fr) 2018-10-30
CN103827389A (zh) 2014-05-28
JP6204351B2 (ja) 2017-09-27
EP2729611A1 (fr) 2014-05-14
PL2729611T3 (pl) 2018-01-31
ES2642270T3 (es) 2017-11-16
US20140130998A1 (en) 2014-05-15
BR112014000096A2 (pt) 2017-02-14

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