EP2729611A1 - Thermally unfixed flat structure for a spiral link fabric, and method for producing a spiral link fabric - Google Patents

Thermally unfixed flat structure for a spiral link fabric, and method for producing a spiral link fabric

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)
French (fr)
Other versions
EP2729611B1 (en
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 SI201231111T priority Critical patent/SI2729611T1/en
Priority to PL12728273T priority patent/PL2729611T3/en
Publication of EP2729611A1 publication Critical patent/EP2729611A1/en
Application granted granted Critical
Publication of EP2729611B1 publication Critical patent/EP2729611B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/0027Screen-cloths
    • D21F1/0072Link belts
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods 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)
  • Springs (AREA)
  • Woven Fabrics (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

A method for producing a spiral link fabric with a plurality of spirals which are joined to one another in an overlapping manner, with a plurality of seam wires which are stitched into overlapping regions of adjacent spirals and thus connect the spirals to one another to form a flat structure, and with a plurality of packing elements which are introduced into free cross sections of the spirals, wherein the flat structure runs through a thermofixing operation before or after the introduction of the packing elements, is known. According to the invention, the spirals are joined together to form the flat structure in such a way that, before the thermofixing operation, the result is a clear width, as viewed in the plane of the flat structure, for the free cross sections of the spirals which are connected to one another to form the flat structure, which clear width is larger than a clear height of the free cross section of each spiral.

Description

Beschreibung  description
Thermisch unfixiertes Flächengebilde für ein Spiralsieb und Verfahren zum Herstellen eines Spiralsiebes Thermally unfixed fabric for a spiral wire and method of making a spiral wire
Die Erfindung betrifft ein thermisch unfixiertes Flächengebilde für ein Spiralsieb mit mehreren nebeneinander angeordneten und benachbart ineinandergreifenden Spiralen, sowie mit mehreren Steckdrähten, die zur Verbindung der Spiralen miteinander in einander überlagernde Spiralabschnitte der benachbarten Spiralen eingefügt sind, wobei in zusammengefügtem Zustand der Spiralen im Bereich jeder Spirale ein freier Querschnitt vorgesehen ist, sowie ein Verfahren zum Herstellen eines Spiralsiebes mit mehreren Spiralen, die überlappend aneinandergefügt werden, mit mehreren Steckdrähten, die in überlappende Bereiche benachbarter Spiralen eingesteckt werden und so die Spiralen zu einem Flächengebilde miteinander verbinden, sowie mit mehreren Füllkörpern, die in freie Querschnitte der Spiralen des Flächengebildes eingebracht werden, wobei vor oder nach dem Einbringen der Füllkörper das Flächengebilde einen Thermofixiervorgang durchläuft. Thermisch unfixierte Flächengebilde, die für die Herstellung von Spiralsieben, insbesondere für den Einsatz bei Papiermaschinen, eingesetzt werden, sind allgemein bekannt. Derartige Flächengebilde werden aus mehreren nebeneinander liegenden Spiralen aufgebaut, die jeweils aus einem Kunststoff-Monofilament endlos hergestellt sind. Die wendeiförmigen Spiralen sind identisch zueinander dimensioniert und überlagern einander mit seitlichen Spiralwindungsabschnitten, die in die benachbarten Spiralwindungsabschnitte der seitlich folgenden Spiralen eingefügt sind. Die benachbarten Spiralen sind vorzugsweise alternierend rechts- und linksdrehend ausgeführt. Um die benachbarten Spiralen miteinander verbinden zu können, sind Steckdrähte vorgesehen, die vorzugsweise ebenfalls aus einem Kunststoff- Monofilament gestaltet sind. Die Steckdrähte werden in überlagerte Spiralabschnitte von jeweils zwei benachbarten Spiralen in Längsrichtung der Spiralen eingesteckt, wodurch die benachbarten Spiralen miteinander verbunden werden. Nach dem Zusammenfügen des Flächengebildes aus einer entsprechenden Anzahl von Spiralen und Steckdrähten wird das Flächengebilde einem Thermofixiervorgang unterzogen, bei dem das Flächengebilde auf eine von einem Kalander vorgegebene Spannung gebracht wird und aufgrund der Temperatureinwirkung durch Schrumpfvorgänge im Material auch selbst Spannung aufbaut, wodurch die Dicke des Flächengebildes reduziert wird. Um eine Luftdurchlässigkeit des Flächengebildes und des Spiralsiebes zu reduzieren, werden in die freien Querschnitte der Spiralen von einer Stirnseite her Füllkörper eingebracht, die den freien Querschnitt jeder Spirale weitgehend ausfüllen. Nach dem Herstellen des Flächengebildes durch den Verbund von Spiralen und Steckdrähten erfolgt eine Thermofixierung des Flächengebildes. Die Füllkörper können vor oder nach dem Thermofixieren - je nach Ausführungsform - eingebracht werden. Aufgabe der Erfindung ist es, ein thermisch unfixiertes Flächengebilde für ein Spiralsieb sowie ein Verfahren zum Herstellen eines Spiralsiebes zu schaffen, durch die ein geringeres Flächengewicht für das Spiralsieb und eine verbesserte Kontaktfläche zur transportierten Ware erzielt werden. 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. In order to connect the adjacent spirals with each other, 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. 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. 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. After the manufacture of the fabric by the combination of spirals and pigtails, 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.
Diese Aufgabe wird für das thermisch unfixierte Flächengebilde dadurch gelöst, dass eine in der Ebene des Flächengebildes erstreckte lichte Breite jedes freien Querschnittes größer ist als eine zwischen oben und unten liegenden Spiralwindungen jeder Spirale erstreckte lichte Höhe jedes freien Querschnittes. Durch die erfindungsgemäße Lösung wird eine geringere Luftdurchlässigkeit von mit Füllkörpern versehenen Spiralsieben erzielt. Denn dadurch, dass die Spiralen im Verhältnis zu ihrer Höhe eine erheblich größere Breite aufweisen als bekannte Spiralen, sind pro Fläche weniger Steckdrähte und weniger Verbindungsbereiche notwendig, so dass zwangsläufig auch weniger Luftdurchtrittsöffnungen vorhanden sind. Die reduzierte Anzahl von Steckdrähten zur Schaffung des Spiralenverbundes und damit des Flächengebildes gewährleistet zusätzlich ein geringeres Flächengewicht als bei herkömmlichen Flächengebilden für Spiralsiebe. Die größere Breite der Spiralen des Flächengebildes gewährleistet auch eine verbesserte Kontaktfläche zum transportierten Produkt, insbesondere zu Papierbahnen. Hierdurch ist gewährleistet, dass die als Trocknungssiebe für die Papierbahnen dienenden Spiralsiebe für die Papierindustrie weniger Markierungen im Papier verursachen, wodurch sich die Papierqualität erhöht. Durch die vergrößerte Kontaktfläche wird zudem der Wärmefluss vom Spiralsieb zum Trocknungsmedium erhöht. Dadurch wird eine Erhöhung der Trocknungsgeschwindigkeit und damit auch eine Erhöhung der Produktionsgeschwindigkeit ermöglicht. Bei gleichbleibender Geschwindigkeit würde sich gegenüber bekannten Spiralsieben im Bereich der Papierindustrie eine Energieeinsparung ergeben. Denn der Trocknungsvorgang könnte zeitlich reduziert werden. In Ausgestaltung der Erfindung liegt das Verhältnis von lichter Breite zu lichter Höhe jedes freien Querschnittes der Spiralen des Flächengebildes in einem Bereich zwischen 1 ,01 und 2,50. Besonders vorteilhaft sind Breiten/Höhenverhältnisse zwischen 1 ,30 und 1 ,80. This object is achieved for the thermally unfixed sheet, characterized in that an extending in the plane of the sheet clear width of each free cross-section is greater than a lying between top and bottom spiral turns each spiral clear height of each free cross-section. The solution according to the invention results in a lower air permeability of spiral screens provided with packing elements. Because the fact that the spirals in relation to their height have a significantly greater width than known spirals, less plug wires and less connecting areas are required per area, so inevitably fewer air passage openings are available. The reduced number of plug wires to create the spiral composite and thus the fabric additionally ensures a lower basis weight than conventional fabrics for spiral fabrics. The larger width of the spirals of the fabric also ensures an improved contact surface to the transported product, in particular to paper webs. This ensures that used as drying screens for the paper webs spiral screens for the paper industry cause fewer marks in the paper, which increases the paper quality. The increased contact surface also increases the heat flow from the spiral screen to the drying medium. This allows an increase in the drying rate and thus also an increase in the production speed. At constant speed would result in energy savings compared to known spiral screens in the paper industry. Because the drying process could be reduced in time. In an embodiment of the invention, 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.
In weiterer Ausgestaltung der Erfindung sind die Spiralen aus Rundoder Flachdrähten hergestellt. Sowohl Rund- als auch Flachdrähte sind Kunststoffdrähte. Der Einsatz von Flachdrähten erhöht die Kontaktfläche für die zu transportierende Ware weiter. In a further embodiment of the invention, 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.
In weiterer Ausgestaltung der Erfindung sind die Rund- oder Flachdrähte als Kunststoff-Monofilamente gestaltet. Dadurch ist eine schnelle und einfache Herstellung der Rund- oder Flachdrähte, insbesondere in einem Extrusionsprozess, möglich. In a further embodiment of the invention, the round or flat wires are designed as plastic monofilaments. As a result, a quick and easy production of round or flat wires, in particular in an extrusion process, possible.
In weiterer Ausgestaltung der Erfindung weisen die Spiralen eine Außenbreite im Bereich zwischen 6,50 und 8,60 mm und eine Gesamthöhe im Bereich zwischen 2,50 und 3,50 mm auf. Vorzugsweise besitzen die Runddrähte einen Durchmesser aus einem Bereich von 0,40 mm bis 0,70 mm. Die Flachdrähte und/oder die Steckdrähte sind vorzugsweise mit Querschnittsabmessungen zwischen 0,40 und 0,80 mm versehen. Diese Dimensionierungen sind besonders vorteilhaft zur Verbesserung der erfindungsgemäßen Lösung. In a further embodiment of the invention, 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. Preferably, 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.
Für das Verfahren der eingangs genannten Art zum Herstellen eines Spiralsiebes wird die der Erfindung zugrunde liegende Aufgabe dadurch gelöst, dass die Spiralen derart zu dem Flächengebilde zusammengefügt werden, dass sich vor dem Thermofixiervorgang für die freien Querschnitte der zu dem Flächengebilde miteinander verbundenen Spiralen eine in der Ebene des Flächengebildes gesehene lichte Breite ergibt, die größer ist als eine lichte Höhe des freien Querschnittes jeder Spirale. Durch dieses Verfahren werden die gleichen Vorteile erzielt, wie sie bereits für das erfindungsgemäße, thermisch unfixierte Flächengebilde und das daraus hergestellte Spiralsieb beschrieben wurden. Besonders vorteilhaft für das Verfahren wie auch für das thermisch unfixierte Flächengebilde ist es, dass bereits vor dem Thermofixiervorgang die freien Querschnitte des Flächengebildes im Bereich der Spiralen eine größere Breite als Höhe aufweisen. Dadurch können Füllkörper bereits in das unfixierte Flächengebilde eingeschoben werden und sind durch die Gestaltung der freien Querschnitte bereits in unfixiertem Zustand zwischen den Spiralwindungen des Flächengebildes so sicher gehalten, dass bei einem anschließenden Thermofixiervorgang keine ungewünschte Torsion oder Verdrehung der Füllkörper, die auch als Fülldrähte bezeichnet werden, auftreten kann. Dadurch wird eine hohe Qualität beim fertiggestellten Spiralsieb erzielt. For the method of the type mentioned above for producing a spiral wire, 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. By this method, the same advantages are achieved as they have already been described for the inventive thermally unfixed sheet and the spiral wire produced therefrom. It is particularly advantageous for the method as well as for the thermally unfixed fabric that even before the thermofixing process, the free cross sections of the fabric in the area of the spirals have a greater width than height. As a result, 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.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Ansprüchen sowie aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung, das anhand der Zeichnungen erläutert ist. Further advantages and features of the invention will become apparent from the claims and from the following description of a preferred embodiment of the invention, which is explained with reference to the drawings.
Fig. 1 a und 1 b zeigen ein bekanntes Flächengebilde für ein bekanntes Spiralsieb, 1 a and 1 b show a known sheet for a known spiral wire,
Fig. 2a und 2b in gleichem Maßstab wie die Fig. 1 a und 1 b eine Fig. 2a and 2b in the same scale as Figs. 1 a and 1 b a
Ausführungsform eines erfindungsgemäßen Flächengebildes für ein Spiralsieb, wobei die Gegenüberstellung der Fig. 1 a und 1 b sowie 2a und 2b die unterschiedlichen Dimensionierungen verdeutlicht, Fig. 3 in vergrößerter Darstellung schematisch einen Querschnitt durch das Flächengebilde gemäß Fig. 2b entsprechend 2a, jedoch mit zwei Füllkörpern und Embodiment of a fabric according to the invention for a spiral wire, wherein the comparison of FIGS. 1 a and 1 b as well as 2 a and 2 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
Fig. 4 in anderem Maßstab eine Draufsicht auf das Fig. 4 on a different scale a plan view of the
Flächengebilde nach Fig. 3.  Sheet according to FIG. 3.
Ein thermisch noch unfixiertes Flächengebilde 1 nach den Fig. 2a bis 4 ist für ein Spiralsieb vorgesehen, das in der Papierindustrie eingesetzt wird. Das thermisch unfixierte Flächengebilde 1 , das nachfolgend näher beschrieben wird, erfährt noch einen Thermofixiervorgang, wird für die gewünschte Flächendimensionierung abgelängt und an seinen Randkanten, insbesondere durch einen Schweißvorgang, begradigt und fixiert. Das Flächengebilde 1 besteht aus einer Vielzahl von Spiralen 2, die identisch zueinander dimensioniert sind. Jede Spirale 2 ist endlos aus einem Kunststoff-Monofilament gewickelt, das als Runddraht oder als Flachdraht ausgeführt sein kann. Wie anhand der Querschnittsdarstellungen nach den Fig. 2a und 3 erkennbar ist, weist jede Spirale einen ovalartigen Querschnitt auf. Zur Schaffung des Flächengebildes werden die einzelnen Spiralen 2 alternierend zueinander in jeweils umgekehrter Wicklungsrichtung nebeneinander gebracht und mit den Seitenrandbereichen ihrer Windungen jeweils zwischen korrespondierende Seitenrandbereiche der Windungen der benachbarten Spirale 2 eingeschoben. Wie anhand der Fig. 2b und 4 erkennbar ist, ergeben sich hierdurch für die benachbarten Spiralen zwei jeweils einander windungsweise alternierend überlagernde Spiralabschnitte. Anhand der Fig. 2a und 3 ist erkennbar, dass sich durch diese Überlagerung der Spiralabschnitte der benachbarten Spiralen 2 in Längsrichtung der Spiralen 2 gesehen jeweils Kanalabschnitte bilden, durch die Steckdrähte 3 in Längsrichtung hindurchgeschoben oder -gezogen werden, um so die benachbarten Spiralen 2 miteinander zu verbinden. Die Steckdrähte 3 sind ebenfalls aus Kunststoff hergestellt und im dargestellten Ausführungsbeispiel als Monofilament gestaltet. Die Steckdrähte 3 sind geradlinig ausgeführt. Der so gestaltete Verbund aus Spiralen 2 und Steckdrähten 3 definiert das Flächengebilde 1 , das für die Herstellung des Spiralsiebes benötigt wird. 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 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 can be seen from the cross-sectional representations according to FIGS. 2 a and 3, each spiral has an oval-like cross-section. To create the sheet, 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. As can be seen with reference to FIGS. 2 b and 4, this results in two spiral sections alternately superimposed on each other for the adjacent spirals. With reference to 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.
Wie anhand der Fig. 2a und 3 erkennbar ist, werden nach Herstellung des Verbundes aus Spiralen 2 und Steckdrähten 3 im Bereich jeder Spirale 4 in Längsrichtung des Flächengebildes 1 , d.h. in Längsrichtung der Steckdrähte 3, durchgängige freie Querschnitte 4 geschaffen. Die freien Querschnitte 4 sind zu ihren Seiten hin, d.h. in der Ebene des Flächengebildes 1 gesehen, durch entsprechende Außenrandbereiche der Spiralabschnitte der links und rechts benachbarten Spiralen 2 begrenzt. Nach oben und nach unten sind die freien Querschnitte 4 jeweils durch obere und untere Windungsabschnitte der jeweiligen Spirale 2 begrenzt, die gleichzeitig auch eine obere und eine untere Kontaktfläche des Flächengebildes 1 und damit des späteren Spiralsiebes definieren. As can be seen from FIGS. 2 a and 3, after the composite of spirals 2 and plug-in wires 3 has been produced in the region of each spiral 4 in the longitudinal direction of the fabric 1, i. in the longitudinal direction of the plug wires 3, continuous free cross-sections 4 created. The free cross sections 4 are towards their sides, i. 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.
Einen grundsätzlich gleichen Aufbau weist ein Flächengebilde V nach den Fig. 1 a und 1 b auf, wie es aus dem Stand der Technik bekannt ist. Auch dort sind Spiralen 2' über Steckdrähte 3' zu einem Verbund zusammengefügt. Wesentlicher Unterschied bei dem aus dem Stand der Technik bekannten Flächengebilde V ist es, dass im Gegensatz zum erfindungsgemäßen Flächengebilde 1 die Spiralen 2' eine wesentlich geringere Breite im Verhältnis zu ihrer Höhe aufweisen als bei dem erfindungsgemäßen Flächengebilde 1 gemäß den Fig. 2a bis 4. Die Spiralen 2 mit gegenüber den Spiralen 2' größerer Breite gemäß den Fig. 2a bis 4 sind kombiniert mit den Steckdrähten 3, die identisch dimensioniert sind wie die Steckdrähte 3' beim Stand der Technik. Dadurch ergibt sich für das erfindungsgemäße Flächengebilde 1 im Bereich jeder Spirale ein freier Querschnitt 4, dessen Breite B (Fig. 3) größer ist als seine Höhe H. Bei entsprechenden freien Querschnitten, die sich bei dem Flächengebilde V nach dem Stand der Technik ergeben, sind die entsprechenden Dimensionierungen umgekehrt. Dies bedeutet, dass beim Stand der Technik die Breite der freien Querschnitte geringer ist als die Höhe der freien Querschnitte im Bereich der Spiralen 2' des bekannten Flächengebildes V . A basically identical construction has a sheet V according to FIGS. 1 a and 1 b, as is known from the prior art. There are spirals 2 'via plug wires 3' joined together to form a composite. 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. is greater than its height H. For corresponding free cross-sections, which result in the fabric V according to the prior art, the corresponding dimensions are reversed. This means that in the prior art the width of the free cross sections is smaller than the height of the free cross sections in the region of the spirals 2 'of the known fabric V.
Es ist zu betonen, dass diese Ausführungen sich sowohl für das bekannte Flächengebilde 1 ' als auch für das erfindungsgemäße Flächengebilde 1 nach den Fig. 2a bis 4 auf das thermisch noch unfixierte Flächengebilde beziehen, d.h. vor dem Durchlaufen eines Thermofixiervorganges. Denn in einem Thermofixiervorgang werden die Flächengebilde neben einer Strechkung thermisch beansprucht und schrumpfen dadurch auf eine geringere Dicke bei gleichzeitig vergrößerter Breitenerstreckung. It should be emphasized that these embodiments relate both to the thermally unfixed sheet, both for the known sheet 1 'and for the sheet 1 according to the invention according to FIGS. before going through a thermofixing process. Because in a thermofixing process, the fabrics are thermally stressed in addition to a Strechkung and thereby shrink to a smaller thickness with simultaneously increased width extension.
Wie anhand der Fig. 3 erkennbar ist, entspricht die Breite B jedes freien Querschnittes 4 dem lichten Abstand zwischen gegenüberliegenden Seitenrandbereichen der Spiralabschnitte der benachbarten Spiralen 2. Die lichte Höhe H des freien Querschnittes 4 wird durch den Größenabstand zwischen oberen und unteren Windungsabschnitten der jeweiligen Spirale 2 definiert. Beim dargestellten Ausführungsbeispiel ist dieser größte Abstand in der Mitte des jeweiligen freien Querschnittes 4 vorgesehen. Anhand der Fig. 3 ist noch eine Außenbreite A und eine Gesamthöhe G jeder Spirale 2 definiert. Besonders bevorzugte Abmessungen der Spiralen 2 eines erfindungsgemäßen Flächengebildes 1 nach den Fig. 2a bis 4 weisen eine Gesamthöhe G im Bereich zwischen 2,50 mm und 3.50 mm und eine bevorzugte Außenbreite A im Bereich von 6,50 mm bis 8,60 mm auf. Besonders vorteilhaft sind Spiralen 2 mit einem Verhältnis von Außenbreite A zu Gesamthöhe G von 6,75 mm x 2,90 mm, von 7,00 mm x 3,00 mm und von 8,40 mm x 3,40 mm vorgesehen. Das Kunststoff-Monofilament zur Herstellung der Spiralen 2 besteht vorzugsweise aus Polyethylenterephthalat (PET) und ist vorzugsweise entweder als Flachdraht mit Querschnittsabmessungen von 0,43 mm x 0,70 mm oder als Runddraht mit einem Durchmesser von 0,60 mm oder 0,70 mm ausgeführt. Die Steckdrähte 3 sind ebenfalls aus PET hergestellt und als Kunststoff-Monofilamente ausgeführt. Sie sind vorzugsweise als Runddrähte gestaltet mit einem bevorzugten Durchmesser von 0,70 mm. Die Toleranzen in der Außenbreite A und der Gesamthöhe G der Spiralen 2 können vorzugsweise in einen Toleranzbereich von + 0,20 mm differieren. As can be seen from Fig. 3, the width B of 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. With reference to FIG. 3, 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.
Bei einer Außenbreite A von etwa 6,70 mm und einer Gesamthöhe der Spirale 2 von etwa 2,90 mm ergibt sich im Verbund für das Flächengebilde 1 für jeden freien Querschnitt 4 eine lichte Breite B von etwa 3,50 mm und eine lichte Höhe H von etwa 2,12 mm. Damit ergibt sich bei einer solchen Ausführungsform ein Breiten/Höhenverhältnis B : H für jeden freien Querschnitt 4 von 1 ,65 : 1 . With an outer width A of about 6.70 mm and a total height of the spiral 2 of about 2.90 mm results in the composite for the fabric 1 for each free cross-section 4 a clear width B of about 3.50 mm and a clear height H. of about 2.12 mm. This results in such an embodiment, a width / height ratio B: H for each free cross-section 4 of 1, 65: 1.
In die so gestalteten freien Querschnitte 4 sind in Längsrichtung im Querschnitt knochenförmige Füllkörper F einbringbar, die weitgehend an die Querschnittsabmessungen des jeweiligen freien Querschnittes 4 angepasst sind, wie anhand der Fig. 3 und 4 erkennbar ist. Die Füllkörper F können ebenfalls aus Kunststoff als geradlinige Fülldrähte mit einem Querschnitt gemäß Fig. 3 ausgeführt sein. In der Draufsicht auf das Flächengebilde 1 gesehen verbleiben nach Einbringen der Füllkörper F nur noch geringe Luftdurchlassöffnungen L, die anhand der Fig. 4 erkennbar sind und zwischen den seitlichen Randkanten der Füllkörper F und den Steckdrähten 3 sowie den entsprechend überlagerten Spiralabschnitten der benachbarten Spiralen 2 liegen. 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 ,
Die Füllkörper F werden beim dargestellten Ausführungsbeispiel ebenfalls noch vor der Thermofixierung des Flächengebildes 1 in die freien Querschnitte 4 des Verbundes aus Spiralen 2 und Steckdrähten 3 eingeführt. Anschließend erfolgt ein für die Herstellung von Spiralsieben grundsätzlich bekannter Thermofixiervorgang, bei dem das Flächengebilde 1 neben thermischer Beanspruchung einer bestimmten Spannung in Längsrichtung ausgesetzt wird. Außerdem baut das Flächengebilde 1 durch Eigenschrumpf der Kunststoff-Spiralen 2 selbst Spannung auf, so dass das Flächengebilde 1 gestreckt wird und dadurch die Dicke reduziert und es in diesem flacheren Zustand thermisch fixiert wird. 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. This is followed by 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. In addition, 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.

Claims

Patentansprüche claims
1. Thermisch unfixiertes Flächengebilde (1 ) für ein Spiralsieb mit mehreren nebeneinander angeordneten und benachbart ineinandergreifenden Spiralen (2) sowie mit mehreren Steckdrähten (3), die zur Verbindung der Spiralen (2) miteinander in einander überlagernde Spiralabschnitte der benachbarten Spiralen (2) eingefügt sind, wobei in zusammengefügtem Zustand der Spiralen (2) im Bereich jeder Spirale (2) ein freier Querschnitt vorgesehen ist, dadurch gekennzeichnet, dass eine in der Ebene des Flächengebildes (1 ) erstreckte lichte Breite (B) jedes freien Querschnittes (4) größer ist als eine zwischen oben und unten liegenden Spiralwindungen jeder Spirale (2) erstreckte lichte Höhe H jedes freien Querschnittes (4). 1. Thermally unfixed fabric (1) for a spiral wire with a plurality of juxtaposed and adjacent intermeshing spirals (2) and with a plurality of plug wires (3) for connecting the spirals (2) with each other in overlapping spiral sections of the adjacent spirals (2) inserted are, wherein in the assembled state of the spirals (2) in the region of each spiral (2) is provided a free cross-section, characterized in that in the plane of the sheet (1) extending clear width (B) of each free cross-section (4) larger is a free height H of each free cross-section (4), extending between top and bottom spiral turns of each spiral (2).
2. Thermisch unfixiertes Flächengebilde nach Anspruch 1 , dadurch gekennzeichnet, dass das Verhältnis von lichter Breite (B) zu lichter Höhe (H) jedes freien Querschnittes (4) der Spiralen (2) des Flächengebildes (1 ) in einem Bereich zwischen 1 ,01 und 2,0 liegt. 2. Thermally unfixed sheet material according to claim 1, characterized in that the ratio of the clear width (B) to the clear height (H) of each free cross section (4) of the spirals (2) of the sheet (1) in a range between 1, 01 and 2.0 is.
3. Thermisch unfixiertes Flächengebilde nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Spiralen (2) aus Rund- oder Flachdrähten hergestellt sind. 3. Thermally unfixed sheet material according to claim 1 or 2, characterized in that the spirals (2) are made of round or flat wires.
4. Thermisch unfixiertes Flächengebilde nach Anspruch 3, dadurch gekennzeichnet, dass die Rund- oder Flachdrähte als Monofilamente gestaltet sind. 4. Thermally unfixed sheet material according to claim 3, characterized in that the round or flat wires are designed as monofilaments.
5. Thermisch unfixiertes Flächengebilde nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Spiralen (2) eine Außenbreite (A) im Bereich zwischen 6,50 und 8,60 mm und eine Gesamthöhe (G) im Bereich zwischen 2,50 und 3,50 mm aufweisen. 5. Thermally unfixed sheet material according to at least one of the preceding claims, characterized in that the spirals (2) have an outer width (A) in the range between 6.50 and 8.60 mm and an overall height (G) in the range between 2.50 and 3.50 mm.
6. Thermisch unfixiertes Flächengebilde nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Runddrähte einen Durchmesser aus einem Bereich von 0,40 mm bis 0,70 mm besitzen. 6. Thermally unfixed sheet material according to claim 3 or 4, characterized in that the round wires have a diameter ranging from 0.40 mm to 0.70 mm.
7. Thermisch unfixiertes Flächengebilde nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Flachdrähte und/oder die Steckdrähte (3) Querschnittsabmessungen zwischen 0,40 und 0,80 mm aufweisen. 7. Thermally unfixed sheet material according to at least one of the preceding claims, characterized in that the flat wires and / or the plug wires (3) have cross-sectional dimensions between 0.40 and 0.80 mm.
8. Verfahren zum Herstellen eines Spiralsiebes mit mehreren Spiralen (2), die überlappend aneinandergefügt werden, mit mehreren Steckdrähten (3), die in überlappende Bereiche benachbarter Spiralen (2) eingesteckt werden und so die Spiralen (2) zu einem Flächengebilde (1 ) miteinander verbinden, mit mehreren Füllkörpern (F), die in freie Querschnitte der Spiralen (2) eingebracht werden, wobei vor oder nach dem Einbringen der Füllkörper (F) das Flächengebilde (1 ) einen Thermofixiervorgang durchläuft, dadurch gekennzeichnet, dass die Spiralen (2) derart zu dem Flächengebilde (1 ) zusammengefügt werden, dass sich vor dem Thermofixiervorgang für die freien Querschnitte (4) der zu dem Flächengebilde (1 ) miteinander verbundenen Spiralen (2) jeweils eine in der Ebene des Flächengebildes (1 ) gesehene lichte Breite (B) ergibt, die größer ist als eine lichte Höhe (H) des freien Querschnittes (4) jeder Spirale (2). 8. Method for producing a spiral screen with a plurality of spirals (2) which are joined together in overlapping manner, with a plurality of plug-in wires (3) which are inserted into overlapping regions of adjacent spirals (2) and thus form the spirals (2) into a sheet (1) connect together, with a plurality of packing bodies (F), which are introduced into free cross sections of the spirals (2), wherein before or after the introduction of the filling body (F), the sheet (1) undergoes a thermofixing process, characterized in that the spirals (2 ) are joined to the sheet (1) in such a way that before the thermofixing process for the free cross sections (4) of the sheet (1) interconnected spirals (2) each in the plane of the sheet (1) seen clear width ( B), which is greater than a clear height (H) of the free cross-section (4) of each spiral (2).
9. Spiralsieb, das nach einem Verfahren nach Anspruch 8 hergestellt ist. 9. spiral screen, which is prepared by a method according to claim 8.
EP12728273.9A 2011-07-06 2012-06-18 Thermally unfixed flat structure for a spiral link fabric, and method for producing a spiral link fabric Active EP2729611B1 (en)

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DE102011078724A DE102011078724A1 (en) 2011-07-06 2011-07-06 Thermally unfixed fabric for a spiral wire and method of making a spiral wire
PCT/EP2012/061559 WO2013004474A1 (en) 2011-07-06 2012-06-18 Thermally unfixed flat structure for a spiral link fabric, and method for producing a spiral link fabric

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EP3018253B1 (en) * 2014-11-04 2016-09-21 Karl Mayer Textilmaschinenfabrik GmbH Device and method for manufacturing spiral link fabrics
DE102019215404A1 (en) * 2019-10-08 2021-04-08 Württembergische Spiralsiebfabrik Gmbh Core-sheath thread, flat structure, method for producing a core-sheath thread, method for producing a flat structure

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DE2419751C3 (en) * 1974-04-24 1982-01-21 Kerber, geb. Poth, Hella, 6731 Weidenthal Wire link belt e.g. for paper machines
DE3228033A1 (en) * 1982-07-27 1984-02-02 Siteg Siebtechnik GmbH, 4422 Ahaus LARGE LENGTH SPIRAL FOR PRODUCING A SPIRAL BAND AND METHOD AND DEVICE FOR INPUTING FILLING MATERIAL IN THESE SPIRALS
US5364692A (en) * 1993-12-28 1994-11-15 Scapa Group, Plc Heat set spiral link fabric with modified stuffer yarns
DE4403501A1 (en) * 1994-02-04 1995-08-10 Siteg Siebtech Gmbh Low air permeability spiral link belt and process for its manufacture
JP3497636B2 (en) * 1995-10-25 2004-02-16 シキボウ株式会社 Spiral canvas for papermaking
JP3194865B2 (en) * 1996-05-30 2001-08-06 敷島紡績株式会社 Industrial spiral belt and manufacturing method thereof
US7575659B2 (en) * 2004-12-15 2009-08-18 Albany International Corp. Spiral fabrics
DE102007055759A1 (en) * 2007-12-11 2009-06-18 Voith Patent Gmbh Spiral structure i.e. spiral sliding band, for paper-making machine clothing, has filling element whose cross-sectional area is designed such that filling element in end condition reduces cross section of interior of spiral elements

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

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