EP3953510A1 - Procédé de fabrication de bandes de tissu découpées à froid - Google Patents

Procédé de fabrication de bandes de tissu découpées à froid

Info

Publication number
EP3953510A1
EP3953510A1 EP20722471.8A EP20722471A EP3953510A1 EP 3953510 A1 EP3953510 A1 EP 3953510A1 EP 20722471 A EP20722471 A EP 20722471A EP 3953510 A1 EP3953510 A1 EP 3953510A1
Authority
EP
European Patent Office
Prior art keywords
threads
laying
cutting
thread
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.)
Granted
Application number
EP20722471.8A
Other languages
German (de)
English (en)
Other versions
EP3953510B1 (fr
Inventor
Robert Reimann
Bernhard Engesser
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.)
Textilma AG
Original Assignee
Textilma AG
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 Textilma AG filed Critical Textilma AG
Publication of EP3953510A1 publication Critical patent/EP3953510A1/fr
Application granted granted Critical
Publication of EP3953510B1 publication Critical patent/EP3953510B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D21/00—Lappet- or swivel-woven fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/06—Auxiliary apparatus combined with or associated with looms for treating fabric
    • D03J1/08—Auxiliary apparatus combined with or associated with looms for treating fabric for slitting fabric
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/49—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads textured; curled; crimped
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/587—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads adhesive; fusible
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D35/00—Smallware looms, i.e. looms for weaving ribbons or other narrow fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads

Definitions

  • the invention relates to a method for producing cold-cut fabric webs.
  • Such a hot-cut edge is also proposed in CH 358 760 A, where a metal wire is woven in instead of one of the warp threads, which is then heated by means of an electric current when the fabric webs are cut, whereby the weft threads are melted at this point.
  • a metal wire is woven in instead of one of the warp threads, which is then heated by means of an electric current when the fabric webs are cut, whereby the weft threads are melted at this point.
  • it appears essential that the weft threads are melted together at the cut ends, which results in a basically durable seam, but with a melted edge. testifies to share with the above-described, to be avoided by the invention after.
  • DE 195 10818 C1 proposes temperature control of the heating wire by means of a temperature sensor and a comparator in order to minimize the heating power and to produce a cut edge that is as gentle as possible. It has also been proposed to smooth the melted cutting edge immediately after the cutting process by pressing members. The pressure should be applied by means of spring force or by means of tissue deflection.
  • the hot cutting described above is limited to those fabrics in which both warp and weft are made of thermoplastic, hot-cut threads. Of course, this is not the case in all Use cases, so that all of the hot cutting processes described above can only be used in a restricted manner.
  • the object of the invention is to propose a manufacturing method of fabric webs in which hot cutting can be dispensed with because of the disadvantages and restrictions set out above, but in which the cutting edge is nevertheless - unlike in US 572 674 A - soft and secure against is a fray
  • the object is achieved by a manufacturing method according to claim 1. Since the measures of the invention initially have the consequence that by tying the zigzag threads in the fabric by tying the corner points of the zigzag pattern into the fabric, with this tying a later fraying is prevented from the outset and that in a further step only the Tissue webs can be cut with a cold knife or an equivalent tool. With cold cutting, the threads of the fabric webs are neither melted nor melted through. This is an essential property of cold cutting for the purposes of the present invention. The measures of the invention are considerably improved in that weft thread tails are formed by the cold cutting or after the cold cutting.
  • the length of the weft thread tails at the fabric edge is dependent on the distance between the two adjacent zigzag structures, ie on the number of warp threads loosely lying between the zigzag structure and the cutting edge.
  • a velvet-like soft edge is achieved by the weft thread tails described above.
  • the warp threads which after cutting lie loosely between the zigzag structure of the laying threads or effect threads and the cutting edge in the fabric, are then simply pulled off and the weft thread tails are thereby formed.
  • the warp threads which are located between the cutting-side laying points of said laying threads and the cutting edge, are pulled down before the cutting process and the weft thread tails are thus formed, these warp threads being arranged in the deep shed during the weaving process and the pulling off takes place between the reed and the cutting device.
  • the warp threads which are located between the cutting-side laying points of said laying threads and the cutting edge, are pulled up or down before the shed, ie not woven in at all.
  • thermoplastic threads as weft threads, as warp threads, also as individual warp threads in the area of the intended edges of the individual fabric webs, and / or as the zigzag effect threads - it can be advantageous to melt the fabric before cold cutting and thereby to be fixed mechanically.
  • a fusing of the zigzag threads with the weft threads on the underside of the fabric by means of a heating element can also be advantageous.
  • thermoplastic threads are only melted, but not melted through. Under no circumstances are the threads melted or even melted through during the cutting process.
  • a variant of the method according to the invention is particularly advantageous in which, in addition to the zigzag thread, a further laying thread is introduced which is connected to the zigzag thread in such a way that it prevents the zigzag thread from fraying. thread prevented.
  • This additional laying thread is practically in the direction of the warp thread and can - even with relatively short weft tails - prevent the zigzag thread from being detached from the weft thread tails. It is of course possible to combine this particularly advantageous embodiment of the invention with the above measures of gluing or melting. However, it has been found that this measure alone is an effective remedy against fraying.
  • the additional laying thread can also be thermally fusible or provided with a hot-melt adhesive layer and then the above-mentioned thermal fixation is also carried out, with the weft threads, the zigzag laying threads and / or individual or several warp threads also being fused on or with a hot-melt adhesive layer can be connected.
  • Figure 1 shows the weaving process with the entry of the weft thread and the zigzag threads in the first position
  • FIG. 2 shows the weaving process with the insertion of the weft thread and the zigzag threads in the second position
  • FIG. 3 shows the cutting process with the removal of the loose warp threads
  • FIG. 4 shows the cutting process in a first alternative embodiment in which the warp threads between the cutting device and the fabric edge remain in the deep shed during the entire weaving process and - independently of the cutting process, are pulled downwards;
  • FIG. 5 shows the cutting process in a second alternative embodiment, in which the warp threads between the cutting device and the fabric are already pulled off upwards before the reed;
  • FIG. 6 shows the situation of the zigzag thread which is already held by the weft thread tails
  • FIG. 7 shows the situation of the zigzag thread, which is fixed by an additional laying thread independently of the weft thread tails and
  • FIG. 8 shows an embodiment in which the laying threads are inserted under high tension.
  • a first, simple embodiment of the invention is Darge provides.
  • the weft thread 24 enters weft by weft into the respective open warp thread compartment 28, wherein in the exemplary embodiment the weft thread guide 40 - not shown in Figure 1 - is transferred to a transfer gripper and so - by means of the
  • the base fabric 20 produces attacks through the reed 10.
  • laying threads or fancy threads 30, 34 are introduced in a zigzag shape by means of a multiplicity of feed needles or pricks 34, 36.
  • One of the known methods or facilities is used.
  • the introduction of such laying or effect threads 30, 34 is basically already described in CH 490541 A. Special but when carrying out the invention, the laying or effect threads 30,
  • the zigzag laying can also be carried out as in WO 201 1/095262 A1, the feed needles not being arranged between the reed stop and the reed 10, but between the reed 10 and the shedding device and the reed 10 upwardly open reed teeth having.
  • the two feed needles 32 and 36 shown here which form only an illustrative section in the overall device, are in the exemplary embodiment for laying a zigzag arrangement - together with the further feed needle, not shown here, synchronously back and forth in and against the weft insertion direction, such as in Figures 2 and 3 represents.
  • the woven material 20 is cut into a plurality of fabric tapes 22 in the area of the fabric take-off, only the interface between two of these fabric tapes 22 being shown in FIG.
  • the cutting process is carried out centrally between the two end points of the zigzag arrangement facing the cutting knife 50.
  • the exposed four warp threads 60 are then pulled off laterally at an angle so that the remaining weft thread areas - in the exemplary embodiment approx. 1 mm long - form weft thread tails 25, which on the one hand already prevent the additional laying threads 30, 34 from fraying because they are in Tension are maintained and which on the other hand form a velvety finish of the respective fabric webs 22.
  • a first alternative embodiment as shown in Figure 4 - the superfluous warp threads between the cutting line and the fabric edge 26 independently of the cutting device 50 pulled down and thus the
  • Weft thread tails 25 formed. This is made possible in the present,sbei game that these warp threads remain in the deep shed throughout the weaving process and therefore never get over the weft threads. All other steps of the method - in particular the steps relating to the laying threads - are carried out exactly as in the first exemplary embodiment.
  • a second alternative embodiment as shown in FIG. 5 - the superfluous warp threads between the cutting line and the fabric edge 26 are drawn off upwards before the reed - also independently of the cutting device 50 - that is not tied in at all. As a result, the weft tails are formed in this embodiment. All other steps of the method - in particular the steps relating to the laying threads - are carried out exactly as in the first exemplary embodiment.
  • the laying threads 30, 34 are inserted under such high tension that the warp threads tied by them contract in an area 80 in the weft direction in such a way that a type of cutting path 82 is created and none Excess warp threads must be removed.
  • the cutting device 50 is so far removed from the nearest warp threads through the resulting cutting lane that they cannot be damaged.
  • weft thread tails 25 are formed by pulling together the warp threads.
  • At least one of the threads used i.e. the laying thread, the weft thread or the warp thread, a thermally fixable thread is used in the area of the fabric edge thermally fixed, for example by being slightly melted on its surface and thereby is mechanically fixed with the other threads.
  • the laying thread 30, 32 is fused with the weft threads on the underside of the fabric by means of a heating element.
  • fusible laying threads and weft threads and possibly warp threads are used and verbun by melting to form an even safer fabric edge.
  • At least one of the threads used is provided with a hot-melt adhesive coating and the zigzag structure is created using a heating element at temperatures below the melting point of the threads - if fusible threads are used, which is not necessary in this exemplary embodiment the zigzag structure is hot-glued at the point of the fabric edge.
  • FIGS. 6 and 7 a further securing of the fabric edge 26 of the fabric webs 22 is shown, namely in FIG. 6 without this securing and in FIG. 7 with this securing.
  • the fabric edge 26 is secured to the extent that the laying thread 30, 34 is under tension on its side facing the cutting edge to such an extent that it does not extend beyond the corresponding weft thread tail 25.
  • additional safety measures such as the above-mentioned melting or hot-melt gluing, however, if the fabric tape 22 is handled carelessly, in particular through improper manipulation, individual ends of the zigzag thread may be brought over the weft thread tail 25 and the fabric edge 26 will be damaged .
  • This additional laying thread 70 has the Ef- fect that the respective zigzag thread 30 or 34 is tied off in relation to the weft thread 24 or in relation to the weft thread tail 25 and thus secured.
  • the additional laying thread 70 lies in the warp thread direction practically between the last remaining warp thread and the first loose warp thread 60 and thus forms the end of the fabric edge 26.
  • the additional laying thread can also assume a zigzag arrangement and need not necessarily form the end of the fabric edge. Its essential function, however, is that it additionally secures (“knots”) the tie points between the laying thread 30, 34 and the weft thread 24 in order to prevent the zigzag thread 30, 34 from slipping off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Woven Fabrics (AREA)
  • Looms (AREA)

Abstract

L'invention concerne un procédé de fabrication de bandes de tissu. L'invention vise à fabriquer à partir d'un tissu (20) lors de l'opération de fabrication une pluralité de bandes (22) de tissu. L'invention propose à cet effet un procédé comprenant les étapes consistant à : introduire des fils de trame (24) dans le compartiment de fil de chaîne ouvert ; placer en zigzag une pluralité de fils de jetage (30, 34) au moyen d'une pluralité d'aiguilles d'amenée (32, 36) ; découper le tissu (20) dans le sens d'éjection en une pluralité de bandes (22) de tissu ; et retirer les fils de chaîne (60) se trouvant entre les points de jetage côté découpe desdits fils de jetage et le dispositif de coupe. Ledit procédé peut être configuré de manière particulièrement avantageuse quand respectivement un autre fil de jetage (70) est introduit au moyen d'une autre aiguille d'amenée à côté du fil de jetage (30, 34) introduit en zigzag sur chaque bord (26) de tissu de sorte qu'il est relié au fil en zigzag de manière à empêcher que le fil en zigzag ne s'effiloche.
EP20722471.8A 2019-04-10 2020-04-07 Procédé de fabrication de bandes de tissus coupées à froid Active EP3953510B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19168492.7A EP3722471A1 (fr) 2019-04-10 2019-04-10 Procédé de fabrication de bandes de tissus coupées à froid
PCT/EP2020/059944 WO2020208047A1 (fr) 2019-04-10 2020-04-07 Procédé de fabrication de bandes de tissu découpées à froid

Publications (2)

Publication Number Publication Date
EP3953510A1 true EP3953510A1 (fr) 2022-02-16
EP3953510B1 EP3953510B1 (fr) 2023-08-02

Family

ID=66105099

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19168492.7A Pending EP3722471A1 (fr) 2019-04-10 2019-04-10 Procédé de fabrication de bandes de tissus coupées à froid
EP20722471.8A Active EP3953510B1 (fr) 2019-04-10 2020-04-07 Procédé de fabrication de bandes de tissus coupées à froid

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19168492.7A Pending EP3722471A1 (fr) 2019-04-10 2019-04-10 Procédé de fabrication de bandes de tissus coupées à froid

Country Status (6)

Country Link
US (1) US11932974B2 (fr)
EP (2) EP3722471A1 (fr)
JP (1) JP7465892B2 (fr)
CN (1) CN113874569B (fr)
TW (1) TW202043575A (fr)
WO (1) WO2020208047A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4092174A1 (fr) * 2021-05-21 2022-11-23 Jacob Müller AG Frick Machine à tisser permettant de fabriquer des bandes de tissu découpées

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Also Published As

Publication number Publication date
WO2020208047A1 (fr) 2020-10-15
EP3722471A1 (fr) 2020-10-14
CN113874569A (zh) 2021-12-31
EP3953510B1 (fr) 2023-08-02
CN113874569B (zh) 2023-05-30
US20220235499A1 (en) 2022-07-28
JP7465892B2 (ja) 2024-04-11
US11932974B2 (en) 2024-03-19
TW202043575A (zh) 2020-12-01
JP2022527617A (ja) 2022-06-02

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