EP4345202A1 - Tricot à renforcement des bords ainsi que dispositif et procédé de fabrication d'un tel tricot - Google Patents

Tricot à renforcement des bords ainsi que dispositif et procédé de fabrication d'un tel tricot Download PDF

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Publication number
EP4345202A1
EP4345202A1 EP22199075.7A EP22199075A EP4345202A1 EP 4345202 A1 EP4345202 A1 EP 4345202A1 EP 22199075 A EP22199075 A EP 22199075A EP 4345202 A1 EP4345202 A1 EP 4345202A1
Authority
EP
European Patent Office
Prior art keywords
knitted fabric
web
fabric
edge
weft
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.)
Pending
Application number
EP22199075.7A
Other languages
German (de)
English (en)
Inventor
Stephan Bender
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.)
Karl Meyer Technische Textilien GmbH
Karl Mayer Technische Textilien GmbH
Original Assignee
Karl Meyer Technische Textilien GmbH
Karl Mayer Technische Textilien 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 Karl Meyer Technische Textilien GmbH, Karl Mayer Technische Textilien GmbH filed Critical Karl Meyer Technische Textilien GmbH
Priority to EP22199075.7A priority Critical patent/EP4345202A1/fr
Priority to CN202211545400.1A priority patent/CN117802685A/zh
Publication of EP4345202A1 publication Critical patent/EP4345202A1/fr
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/12—Flat warp knitting machines with provision for incorporating unlooped wefts extending from selvedge to selvedge
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/22—Flat warp knitting machines with special thread-guiding means
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02412—Fabric incorporating additional compounds enhancing mechanical properties including several arrays of unbent yarn, e.g. multiaxial fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/204—Geotextiles

Definitions

  • Knitted fabric with a weft thread system is known.
  • a knitted fabric also known as a knitted fabric, is produced using a stitch-forming warp thread system.
  • a knitted fabric is stable enough even without a weft thread and has a corresponding cohesion because the stitches are connected to one another not only in the longitudinal but also in the transverse direction of a web.
  • weft threads can also be inserted into the knitted fabric, which has an even distribution of stitches over the entire width. These weft threads are tied in the stitches using stitch-forming organs.
  • Knitted fabric is often used as a lattice structure.
  • the stitch-forming warp threads are used to create strips consisting of several stitches that are woven together in the width direction and which are connected to one another in the width direction with weft threads which are integrated into the stitches.
  • the weft threads are absolutely necessary for this mesh fabric.
  • three types of threads are required for the lattice structure on which the invention is based: stitch-forming warp threads, standing threads and weft threads. Compared to knitted fabrics, weft threads that undulate with the warp threads are always necessary for woven fabrics.
  • CH 688 382 A5 a method for sharply defined inlay selvages is described, especially for Arab headscarves.
  • the fabric edge is also used as an aesthetic feature;
  • the weft threads are undulated in the usual way in an intersecting manner depending on the binding with the warp threads, i.e. tied off, with an end of the respective weft thread protruding beyond the width of the fabric being folded over by 180° and woven in at the edges.
  • edge strengthening but rather a purely aesthetic feature.
  • the known knitted fabrics stabilized with reinforcements are limited to using reinforcements for the knitted fabric either on the surface or on the inside; reinforcements in the edge area are not described.
  • the inlay edges described for woven fabrics have nothing to do with knitted fabrics and can only be achieved by folding over protruding weft threads by 180°, since the weaving means that there are no other options at all due to the weft threads being attached to the binding point. In the case of inlay edges of woven fabrics, there is therefore only one defined orientation of the inlaid weft thread end, regardless of whether the weft threads are multifilament yarns or monofilament yarns.
  • the object of the invention is therefore to create a textile grid which consists of weft threads, standing threads and stitch-forming warp threads, the weft threads being finite weft threads and the ends of which protrude beyond the width of the knitted fabric, preferably in an uncontrolled manner, ie in any angular arrangement, again obliquely opposite to the direction of web production.
  • This task includes using not only monofilament but also multifilament yarns as weft threads, which allow for the fanning out individual filaments means that the weft thread ends are not placed back at an angle, but at a variety of different angles for individual filaments of the multifilament yarn of the weft thread as insert edges into the knitted fabric and are tied into the stitches and fixed there.
  • the knitted fabric according to the invention has a loop-forming warp thread system into which finite weft threads are incorporated, i.e. woven.
  • the knitted fabric is designed as a web of material with a defined width, with a standing thread arranged on its edges, which delimits the web of material at the edges.
  • the knitted finite weft threads have a length which is greater than the width of the web of material, so that they have a protrusion with respect to the respective standing thread.
  • a tucked-in edge of the knitted fabric is formed by deflecting the protrusion of the weft thread with respect to the web width at a defined angle against the web production direction.
  • the protrusion is deflected at least far enough that it is tied off as a tucked-in edge in the loop-forming warp thread system in at least one stitch of the stitches following in relation to the direction of product production.
  • Weft threads are used for the knitted fabric as monofilament threads or as multifilament threads.
  • the advantage over all known tucked-in edges in woven fabrics is that the excess length does not have to be folded over at a defined angle. Rather, it is sufficient if the excess length of the weft thread is folded over in any direction, preferably between 90° and 180°. Edge reinforcement occurs as soon as the excess length has been woven in again by folding it over against the direction of the fabric production, i.e. in the direction of the standing threads.
  • the problem with multifilament weft thread yarns is that the individual filaments of the thread can fan out to a certain extent when they are folded over. If such excess lengths made of multifilament yarns are folded over in a fanned out manner, the individual filaments or groups of filaments are woven in and thus bound in different stitches.
  • This integration of individual filaments or individual groups of filaments has the advantage that individual filaments do not protrude from the knitted fabric and, on the other hand, a fairly good edge reinforcement of the knitted fabric can be achieved.
  • the excess material folded against the direction of the fabric production in the stitches following the actual weft thread is tied off in at least one of these stitches.
  • the excess material is tied off multiple times, i.e. in several stitches. If multiple binding is implemented, then better edge reinforcement of the knitted fabric can generally be achieved than if the excess material is only tied off in a single stitch.
  • the knitted fabric is preferably a textile grid.
  • a textile grid consists of three thread systems: the standing threads, which run continuously without changing direction in the production direction, i.e. in a so-called 0° direction, the weft threads, which run within the web transverse to the web production direction, i.e. run in a 90° direction, where Taken alone, the weft threads and the standing threads cross each other, but do not yet form a web in which the two threads are connected, nor do the warp threads by means of which the stitches are formed. These stitches are so pronounced and arranged that they fix the standing threads and the weft threads relative to one another, especially at their crossing points.
  • the standing threads are also fixed; the standing threads and the weft threads can preferably be fixed in groups relative to one another. If one of these thread systems were missing, the webs would fall apart into individual parts, which would then no longer form a functioning textile grid.
  • the system known as a stitch-forming warp thread system comprises the warp threads, which are simultaneously pulled off from a respective warp beam and, using stitch-forming needle systems, produce the interconnected stitches and thus the knitted fabric, i.e. the knitted fabric.
  • a significant advantage of the present invention is that when integrating the excess of the weft threads into the edge of the knitted fabric, i.e. the stitches present there, this can be integrated without any particular consideration of the exact position of the excess with respect to the direction of product production or with respect to the direction of stitch formation.
  • the overhang of the weft threads is folded over in such a way that the edge of the fabric is initially aligned at approximately 0°, ie in the direction of the respective lateral standing thread, at least over the length of a stitch, so that the effect or
  • This uncontrolled insertion means that the angular alignment of the excess in the insertion edge is not controlled so that all excess, for example, have the same angle to the direction of the fabric web production, but that a fold is simply implemented and the only important thing is that the folded part, i.e. the excess of the weft thread, is appropriately integrated and thus fixed in at least one stitch, preferably in several stitches. This creates an edge reinforcement of the knitted fabric.
  • the knitted fabric has a grid structure in which the rows of stitches running in the direction of fabric production have, viewed across the width of the fabric, areas between such rows of stitches in which there are only weft threads that connect the individual rows of stitches to one another, so that an overall grid structure is created.
  • the excess weft threads are then expediently woven into at least one stitch in the respective rows of stitches present at the edges of the knitted fabric.
  • the device for producing knitted fabrics according to the above-mentioned features of the knitted fabric according to the invention is constructed in such a way that corresponding knitting tools are provided for a loop-forming warp thread system and a weft thread insertion system for inserting weft threads into the loop-forming warp thread system, so that the weft threads in the loop-forming warp thread system are tied off accordingly in respective loops thereof.
  • the weft threads which have a length that extends beyond the width of the knitted fabric web, form an overhang compared to the width of the knitted fabric, which, according to the device according to the invention, by means of a deflection element, such an overhang is reinserted from the outside, i.e. viewed from the outer standing thread, back into the outer warp thread rows, which consist of loops.
  • the edge-strengthening inlay edge is formed by reinserting the overhang into the corresponding loop rows formed by the warp thread system.
  • the alignment of the overhang in the inlay edge is arbitrary or uncontrolled.
  • the deflection element is preferably designed as an air nozzle arrangement, i.e. a pneumatic arrangement.
  • air nozzle arrangement i.e. a pneumatic arrangement.
  • mechanical deflection elements such as mechanical guides, a sliding shoe or strip arrangement or a brush, comb or rake arrangement.
  • the use of a respective deflection element also depends on the type of material of the weft threads used.
  • An air nozzle arrangement as a pneumatic arrangement is preferred.
  • a previously described edge-bonded knitted fabric is produced using a previously described device.
  • finite weft threads are inserted into a stitch-forming warp thread system forming a web.
  • the web is bordered at its edges by standing threads.
  • the ends of the weft threads, which protrude beyond the width of the web, are used to strengthen the edge of the knitted fabric, so that the weft threads are longer than the width of the web.
  • the excess is inserted into at least one stitch of the rows of stitches located on the edges of the goods at an angle to the direction of the weft thread to form an edge-strengthening insert edge.
  • the process is principally aimed at monofilament weft threads as well as multifilament weft threads.
  • the excess of the weft threads is inserted into the stitch-forming warp thread system in an uncontrolled manner with regard to their insertion direction. This means that when using monofilament weft threads, the direction of the ends of the weft threads, i.e. their projection in any direction, is integrated into the knitted fabric in an angular range of 90° to 180°.
  • the excess is tied off several times from the outset into the stitches of the loop-forming warp thread systems in the stitch rows following the weft thread in the direction of product production.
  • the knitted fabric 1 shown represents a grid structure 11.
  • This grid structure is formed by a loop-forming warp thread system 2, standing threads 6 running in the direction of the loop-forming warp thread system and transverse to the loop-forming warp thread rows, which form the Figure 1 shown vertical structures and weft threads 3 connecting the stitch-forming warp thread rows.
  • the weft threads 3 and the Figure 1 The standing threads 6 anchored vertically within the stitch-forming warp thread rows 2 are not connected to one another, ie they are not fixed in position.
  • the weft threads 3 and the standing threads 6 are fixed in the stitches 9 by means of the warp thread system 2 forming the warp thread rows with the stitches 9. Only in this way is a position-fixed and durable lattice structure 11 present.
  • the horizontally drawn weft threads 3 are weft threads 3 whose length is greater than the width of the knitted fabric 1 or the web 4. This means that there is an overhang 7 compared to the standing threads 6 located directly on the edge on each side of the web 4 educated.
  • This supernatant 7 is formed by fixing the weft threads 3 after they have been laid and integrated into the stitches 9 of the rows of stitches 12, so that the grid structure 11 can be used, for example, as a geotextile.
  • the weft threads 3 can be pulled out of the lattice structure 11 again when an appropriate pull is applied.
  • the lattice structure 11 can distort in its basic shape to form rectangular fields and sections.
  • the protrusions 7 of the respective weft threads 3 are returned against the goods production direction 8 at an angle between 90 ° and 180 ° in an uncontrolled manner with respect to the angle and are also tied off by subsequent stitches which have incorporated the weft threads.
  • the overhangs 7 are tied off by two rows of stitches 12 formed next to each other with the respective standing threads 6, which offers an even better hold, an even better fixation and an even better edge reinforcement.
  • the overhang 7 is bound at least over the length of a stitch 9 binding the outer edge standing thread 6 with a 90° deflection with respect to the weft thread direction, ie alignment in the direction of the standing thread 6, and then inserted into the row of stitches 12 or into the rows of stitches with its immediate end in the insertion edge 10.
  • the deflection of the overhang 7 from the in Figure 1 shown horizontal direction which means an alignment to the web production direction 8, i.e.
  • the respective outer standing threads 6 can no longer be pulled out of the web 4 or moved in the web 4 by certain process forces transverse to the web 4, for example during further processing or when laying the web 4.
  • an edge-fixed knitted fabric 1 is produced using simple means, which maintains the position of the individual thread structures in relation to one another even under more difficult geological operating conditions.
  • Three weft threads 3 running in a 90° orientation to the web production direction 8 are laid in groups.
  • the stitch-forming warp threads which are shown in the stitch-forming warp thread rows or in the stitch-forming warp thread system 2, bind off the weft threads 3 and the standing threads 6 running in the 0° direction to the goods production direction 8.
  • This is shown in the form of a fringe.
  • the warp thread rows or stitch rows 12 are connected to one another via a weft thread system that runs diagonally in the plane of the web.
  • the supernatant 7 of the weft threads 3 is according to the example Figure 1 After being put back and inserted into the rows of stitches 12, tied off several times in the third row of stitches following the weft fixation, in the example shown here three times in the corresponding stitches. It goes without saying that the edge strengthening takes place on both web edges 5.
  • FIG. 2 The exemplary embodiment shown corresponds to the basic structure Figure 1 , so only a specific detail is shown here.
  • a standing thread 6 located at the outermost edge of the web 5 is shown, along which its projection 7 is aligned in the 0° direction to the web production direction 8, ie parallel to the outermost standing thread 6, and is captured by the stitches 9 formed there in the stitch-forming warp thread system 2 and is integrated.
  • it is a reverse jersey layout.
  • deflection elements which are preferably an air nozzle arrangement, ie the projections 7 are blown into the respective type to be bound in the insertion edge 10.
  • Mechanical deflection elements such as corresponding mechanical guides for the projections 7, sliding shoes or
  • the basic structure of slide bar arrangements or brush, comb or rake arrangements is known to the average person skilled in the art and will therefore not be explained further here. It goes without saying that, depending on the application, the appropriate selection of an application and a corresponding deflection device are required.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
EP22199075.7A 2022-09-30 2022-09-30 Tricot à renforcement des bords ainsi que dispositif et procédé de fabrication d'un tel tricot Pending EP4345202A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22199075.7A EP4345202A1 (fr) 2022-09-30 2022-09-30 Tricot à renforcement des bords ainsi que dispositif et procédé de fabrication d'un tel tricot
CN202211545400.1A CN117802685A (zh) 2022-09-30 2022-12-01 带边缘加强部的针织品及制造这种针织品的设备和方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22199075.7A EP4345202A1 (fr) 2022-09-30 2022-09-30 Tricot à renforcement des bords ainsi que dispositif et procédé de fabrication d'un tel tricot

Publications (1)

Publication Number Publication Date
EP4345202A1 true EP4345202A1 (fr) 2024-04-03

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EP22199075.7A Pending EP4345202A1 (fr) 2022-09-30 2022-09-30 Tricot à renforcement des bords ainsi que dispositif et procédé de fabrication d'un tel tricot

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EP (1) EP4345202A1 (fr)
CN (1) CN117802685A (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585404B1 (de) * 1962-12-08 1970-04-30 Le Textile Delcer S A Verfahren zur Herstellung von Kettenwirkware mit dem Aussehen und den Eigenschaften von Geweben
US3874201A (en) * 1973-12-10 1975-04-01 Schlafhorst & Co W Knit fabric incorporating a fancy warp stitch weave
DE9108299U1 (de) * 1991-07-05 1991-08-29 Demmer, Claudia, 5100 Aachen Elastisches textiles Trägerband, insbesondere für Miederwaren
US5246306A (en) 1987-11-04 1993-09-21 Bay Mills Limited Reinforcements for asphaltic paving, processes for making such reinforcements, and reinforced pavings
DE4222076A1 (de) 1992-07-04 1994-01-05 Spinnerei & Weberei Dietfurt A Gewebe
DE19607182A1 (de) * 1996-02-27 1997-08-28 Langendorf Gmbh Wilhelm Elastisches Band
CH688382A5 (de) 1995-05-16 1997-08-29 Alpex Ag Verfahren fuer scharf abgegrenzte Einlege-Webkanten sogenannte Lisieren bei Geweben fuer Araber-Kopftuecher der Tucharten Ghutra und Yashmagh.
DE10021341A1 (de) 2000-05-02 2001-11-15 Fraunhofer Ges Forschung Verfahren und Vorrichtung zur Bildung von, insbesondere mehrschichtigen Schußfäden-Verlegungen multiaxial orientierter Fadengelege und Fadenleger hierfür, sowie mehrschichtiges Schußfädengelege
DE10163730C1 (de) 2001-12-21 2003-10-09 Mayer Malimo Textilmaschf Verfahren und Kettenwirkmaschine zur Herstellung eines Kettengewirkes mit eingelegten Verstärkungselementen
DE102006003413B3 (de) 2006-01-24 2007-08-30 Lindauer Dornier Gmbh Gewebe mit einer durch eingelegte Schussfadenendabschnitte gebildeten Einlegekante und Verwendung desselben
CN111479964A (zh) 2017-12-22 2020-07-31 易可保丹麦有限公司 密封幅材

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585404B1 (de) * 1962-12-08 1970-04-30 Le Textile Delcer S A Verfahren zur Herstellung von Kettenwirkware mit dem Aussehen und den Eigenschaften von Geweben
US3874201A (en) * 1973-12-10 1975-04-01 Schlafhorst & Co W Knit fabric incorporating a fancy warp stitch weave
US5246306A (en) 1987-11-04 1993-09-21 Bay Mills Limited Reinforcements for asphaltic paving, processes for making such reinforcements, and reinforced pavings
DE9108299U1 (de) * 1991-07-05 1991-08-29 Demmer, Claudia, 5100 Aachen Elastisches textiles Trägerband, insbesondere für Miederwaren
DE4222076A1 (de) 1992-07-04 1994-01-05 Spinnerei & Weberei Dietfurt A Gewebe
CH688382A5 (de) 1995-05-16 1997-08-29 Alpex Ag Verfahren fuer scharf abgegrenzte Einlege-Webkanten sogenannte Lisieren bei Geweben fuer Araber-Kopftuecher der Tucharten Ghutra und Yashmagh.
DE19607182A1 (de) * 1996-02-27 1997-08-28 Langendorf Gmbh Wilhelm Elastisches Band
DE10021341A1 (de) 2000-05-02 2001-11-15 Fraunhofer Ges Forschung Verfahren und Vorrichtung zur Bildung von, insbesondere mehrschichtigen Schußfäden-Verlegungen multiaxial orientierter Fadengelege und Fadenleger hierfür, sowie mehrschichtiges Schußfädengelege
DE10163730C1 (de) 2001-12-21 2003-10-09 Mayer Malimo Textilmaschf Verfahren und Kettenwirkmaschine zur Herstellung eines Kettengewirkes mit eingelegten Verstärkungselementen
DE102006003413B3 (de) 2006-01-24 2007-08-30 Lindauer Dornier Gmbh Gewebe mit einer durch eingelegte Schussfadenendabschnitte gebildeten Einlegekante und Verwendung desselben
CN111479964A (zh) 2017-12-22 2020-07-31 易可保丹麦有限公司 密封幅材

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