EP0196040A2 - Tissu en hélices combinées à perméabilité réduite et son procédé de fabrication - Google Patents

Tissu en hélices combinées à perméabilité réduite et son procédé de fabrication Download PDF

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Publication number
EP0196040A2
EP0196040A2 EP86103987A EP86103987A EP0196040A2 EP 0196040 A2 EP0196040 A2 EP 0196040A2 EP 86103987 A EP86103987 A EP 86103987A EP 86103987 A EP86103987 A EP 86103987A EP 0196040 A2 EP0196040 A2 EP 0196040A2
Authority
EP
European Patent Office
Prior art keywords
spirals
spiral
wires
turns
winding
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Withdrawn
Application number
EP86103987A
Other languages
German (de)
English (en)
Other versions
EP0196040A3 (fr
Inventor
Johannes Lefferts
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.)
Siteg Siebtechnik GmbH
Original Assignee
Siteg 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 Siteg Siebtechnik GmbH filed Critical Siteg Siebtechnik GmbH
Publication of EP0196040A2 publication Critical patent/EP0196040A2/fr
Publication of EP0196040A3 publication Critical patent/EP0196040A3/fr
Withdrawn legal-status Critical Current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
    • D21F1/0072—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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249922—Embodying intertwined or helical component[s]

Definitions

  • the invention relates to a spiral link belt with a plurality of plastic spirals, the windings of a spiral zipper-like and without tension or compression spring tension interlocking with the windings of the neighboring spirals, and with plug-in wires which are inserted into the channels, two each by the interlocking windings Spirals are formed, the turns of the spirals penetrating into the material of the plug wires and the spirals having an oval shape with heads widening in the longitudinal direction of the spirals on the winding arches and the interior of the spirals being filled with filler material.
  • the object of the present invention is therefore to achieve a reduction in air permeability with simple means.
  • the width of the heads of the winding arcs is preferably approximately twice the diameter of the wires from which the spirals are wound.
  • the application also relates to a method for producing such a spiral link belt.
  • the spirals with widened winding heads can be produced by a method similar to that described in DE-OS 29 38 221, the wire material being wound on a mandrel with an oval or lenticular cross section. Due to this cross-section, the mandrel has a longitudinal edge or cutting edge, so that the wire tension periodically increases and decreases during winding. When the wire tension rises suddenly, a deformation of the wire material is brought about, which leads to the widened winding heads. The more pronounced the oval or lens shape of the mandrel and the higher the tension with which the wire is wound on the mandrel, the more pronounced the widening of the winding heads. In addition, the wire can be heated on the mandrel immediately before it comes up.
  • the wire cross-section on the winding heads can additionally be flattened by pressure wheels which press the wire material against the cutting edge or edge of the mandrel.
  • the spirals are wound from a wire with a kidney, U or V-shaped cross section.
  • Such wires have a concave and a convex side, and the coils are wound so that the concave side faces inwards or outwards.
  • thermofixing a sufficiently high longitudinal tension is then exerted on the spiral link belt and a temperature is used such that the cross section of the wires is flat in the region of the winding arches, in which the wires rest on the plug wires is pressed. Flattening results in a broadening. The extent of the widening depends not only on the softness of the material, but also and above all on the cross-sectional shape of the plastic wires used.
  • the spirals are wound from heat-fixable plastic monofilament, in particular from polyester monofilament.
  • the filling material can be a ribbon, one or more plastic monofilaments, spun yarn, multifilament yarn, a braided hose or the like. So far, plastic monofilaments have mainly been used in practice.
  • the widening of the heads 3 should be concentrated on the outermost ends of the winding arcs 7, so that the widened heads 3 do not increase the pitch of the spirals 1 in the finished spiral link belt.
  • the wire material 18 passes through a heating device 19 and is wound on a mandrel 20 with a pronounced oval cross section.
  • the mandrel can also have a lenticular cross section with two edges.
  • Two pressure wheels 21 can also be provided. They press against the edges of the mandrel 20 and press the winding heads 3 flat.
  • a cone 22 is guided in a reciprocating manner on the mandrel 20.
  • the wire 18 is pushed over the end of the mandrel 20 by the rapidly reciprocating cone 22.
  • the turns of the wire 18 are pressed apart by the widened heads 3.
  • the wound wire 18 is pushed through a heat-setting zone, in which both the shape of the spirals and the widening of the heads are heat-set.
  • the one formed from the wire 18 Spiral 1 is now fixed in the desired shape and pushes itself from the thinning mandrel 20 and falls into a collecting container.
  • FIG. 4 and 5 show a spiral link belt made of spirals with widened winding heads before and after the heat setting. While in Fig. 4, ie before the heat setting, the plug wires 2 are straight, they are slightly wavy in Fig. 5, that is after the heat setting.
  • the waveform of the plug wires 2 prevents the turns of the spirals 1 from shifting along the plug wires 2. Due to the waveform of the plug wires 2, the winding heads 3 are also very close to the plug wires 2, so that there are hardly any openings for air to pass between the winding heads 3 and the plug wires 2.
  • the interior 8 of the spirals 1 is laterally delimited by the winding heads 3 and above and below by the winding legs 9.
  • the lateral boundary is almost complete, so that the interior 8 of the spirals 1 can be practically completely filled by inserting filler material 4, so that the air permeability is greatly reduced. It is important here that the space between adjacent winding heads 3 of the same spiral 1 is as small as possible, since this space cannot be filled by the filling material 4. In the embodiment shown here, this space is filled by the widened winding heads 3.
  • the pitch of the spirals 1 in the finished spiral band is approximately twice the diameter of the spiral wires. Since the winding heads 3 have a width equal to twice the spiral wire diameter, they touch one another in the finished spiral band or at least substantially reduce the free space between them.
  • FIGS. 3, 6 and 7 show a further possibility for achieving particularly wide winding heads 3.
  • spirals 1 are used, which are wound from a specially profiled spiral wire.
  • the profile of these spiral wires can be described as kidney-shaped, U-shaped or V-shaped. Different possibilities of the profile are shown in Fig. 3.
  • These profiles can also be referred to as a circular profile with a sector-like cut.
  • These spiral wires are wound into spirals 1 in the manner known from DE-OS 29 38 221.
  • a second wire which is denoted by 24 in DE-OS 29 38 221, a certain slope of the spirals can be achieved.
  • the additional heating device 19 and the pressure wheel 21 are generally not required.
  • the spirals 1 are made so that the special profile of the spiral wire is present within the entire spiral 1 including the winding heads 3.
  • the profile has a convex side and a concave side 6 or incised side.
  • the spirals 1 are wound so that the concave side 6 or incised side faces inwards. It could also point outwards.
  • Fig. 6 shows a section in the central plane of a spiral link belt made therefrom before heat setting.
  • the special profile of the spiral wires can be seen in the area of the winding arcs 3. When heat setting, a high longitudinal tension is exerted on the spiral link belt while heating.
  • the invention is particularly suitable for being implemented in addition to the measures specified in DE-OS 25 04 373.3.
  • Both embodiments can in particular complement each other in such a way that a somewhat less strong profiling of the plug wires 2 or a smaller thickness of the softer sheath of the plug wires is supplemented by widening of the winding heads 3, the winding heads then e.g. only have to correspond to 1.5 times the wire size of the spirals 1.
  • Both measures complement each other so that the trapezoidal surface 5 of Fig. 1 of DE-OS 35 04 373.3 are almost completely closed.
EP86103987A 1985-03-27 1986-03-24 Tissu en hélices combinées à perméabilité réduite et son procédé de fabrication Withdrawn EP0196040A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853511166 DE3511166A1 (de) 1985-03-27 1985-03-27 Spiralgliederband mit verminderter luftdurchlaessigkeit und verfahren zu dessen herstellung
DE3511166 1985-03-27

Publications (2)

Publication Number Publication Date
EP0196040A2 true EP0196040A2 (fr) 1986-10-01
EP0196040A3 EP0196040A3 (fr) 1988-08-03

Family

ID=6266516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103987A Withdrawn EP0196040A3 (fr) 1985-03-27 1986-03-24 Tissu en hélices combinées à perméabilité réduite et son procédé de fabrication

Country Status (5)

Country Link
US (1) US4696852A (fr)
EP (1) EP0196040A3 (fr)
BR (1) BR8601329A (fr)
DE (1) DE3511166A1 (fr)
FI (1) FI861266A7 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3638036A1 (de) * 1986-11-07 1988-05-11 Siteg Siebtech Gmbh Spiralgliederband mit geteilten spiralen
US4857391A (en) * 1987-12-22 1989-08-15 Scapa Inc. Non-woven paper machine dryer fabric without slack edges
DE9301620U1 (de) * 1993-02-05 1994-06-09 Siteg Siebtechnik Gmbh, 48683 Ahaus Vorrichtung zum Herstellen von Kunststoffspiralen mit verbesserter Hydrolysebeständigkeit
US20050124247A1 (en) * 2003-11-24 2005-06-09 Billings Alan L. Metal spiral fabrics for corrugator machines
US7721769B2 (en) * 2007-01-19 2010-05-25 Voith Patent Gmbh Paper machine fabric with trapezoidal shaped filaments
DE102011051235B4 (de) * 2011-06-21 2016-07-07 Bedea Berkenhoff & Drebes Gmbh Vorrichtung und Verfahren zur Herstellung von spiralisierten Kunststofffäden
EP2975176B1 (fr) * 2014-07-17 2016-09-07 Karl Mayer Textilmaschinenfabrik GmbH Dispositif de fabrication de tamis à spirales

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE296427C (fr) *
DE19724C (de) * G. A. Pickhardt in Hagen, Westfalen Neuerungen an Kettenriemen
DE1861967U (de) * 1962-09-12 1962-11-08 Steinhaus Gmbh Drahtgliedergurt mit gerippten querstaeben.
DE1933577U (de) * 1965-10-15 1966-02-24 Drahtwerk C S Schmidt Ag Drahtgurt mit profilierten querstaeben.
AT269739B (de) * 1967-01-05 1969-03-25 Hutter & Schrantz Ag Siebwaren Querstab bzw. Querdraht, insbesondere für Drahtförderbänder
US3731894A (en) * 1971-04-30 1973-05-08 Ws Tyler Inc Spiral belt joint
DE2419751C3 (de) * 1974-04-24 1982-01-21 Kerber, geb. Poth, Hella, 6731 Weidenthal Drahtgliederband z.B. für Papiermaschinen
NL7903176A (nl) * 1979-04-23 1980-10-27 Johannes Lefferts Werkwijze voor het vervaardigen van een zeefband, bij- voorbeeld een zeefband voor een papiermachine.
AU531985B2 (en) * 1979-04-23 1983-09-15 Textiel Techniek Haaksbergen B.V. Sieve belt for papermaking machine
DE2921491A1 (de) * 1979-05-26 1980-12-04 T T Haaksbergen B V I O Verfahren zur herstellung eines gliederbandes
DE2941271A1 (de) * 1979-10-11 1981-05-07 Aurifex Ltd., Holsworthy Kettenglied-armband sowie eine abtrennbare gliederanordnung hierfuer und verfahren zu seiner herstellung
DE3003343A1 (de) * 1980-01-31 1981-08-06 Opti Patent-, Forschungs- und Fabrikations-AG, 8750 Glarus Schraubenwendel-transportband
DE3047989C2 (de) * 1980-12-19 1984-11-15 Reinhard Werner 6057 Dietzenbach Leo Drahtwendel für die Herstellung eines flächigen Gliederbandes
ZA815836B (en) * 1980-09-06 1982-08-25 Scapa Porritt Ltd Link belts
IN157092B (fr) * 1980-09-26 1986-01-11 Haaksbergen T T Bv
FR2494318B1 (fr) * 1980-11-14 1986-10-10 Feutres Papeteries Tissus Indl Bande constituee de spirales
DE3220517C2 (de) * 1982-06-01 1986-12-18 Siteg Siebtechnik GmbH, 4422 Ahaus Verfahren und Vorrichtung zum Herstellen von Schraubenwendeln aus Kunststoff-Monofil mit einer Steigung, die größer ist als der Durchmesser des Monofils
GB8302118D0 (en) * 1983-01-26 1983-03-02 Scapa Porritt Ltd Link belts
US4500590A (en) * 1984-06-25 1985-02-19 Wangner Systems Corporation Dryer fabric having reduced permeability in the area of the pintle joint

Also Published As

Publication number Publication date
DE3511166A1 (de) 1986-10-09
FI861266L (fi) 1986-09-28
FI861266A0 (fi) 1986-03-25
FI861266A7 (fi) 1986-09-28
BR8601329A (pt) 1986-12-02
US4696852A (en) 1987-09-29
EP0196040A3 (fr) 1988-08-03

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Inventor name: LEFFERTS, JOHANNES