EP3377685A1 - Métier rachel, filet et utilisation du métier rachel pour la fabrication d'un filet - Google Patents

Métier rachel, filet et utilisation du métier rachel pour la fabrication d'un filet

Info

Publication number
EP3377685A1
EP3377685A1 EP16782212.1A EP16782212A EP3377685A1 EP 3377685 A1 EP3377685 A1 EP 3377685A1 EP 16782212 A EP16782212 A EP 16782212A EP 3377685 A1 EP3377685 A1 EP 3377685A1
Authority
EP
European Patent Office
Prior art keywords
needles
adjacent
threads
raschel machine
net
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
EP16782212.1A
Other languages
German (de)
English (en)
Other versions
EP3377685B1 (fr
Inventor
Antonios Karatzis
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.)
Karatzis SA Industrial and Hotelier Enterprises
Original Assignee
Karatzis SA Industrial and Hotelier Enterprises
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 Karatzis SA Industrial and Hotelier Enterprises filed Critical Karatzis SA Industrial and Hotelier Enterprises
Publication of EP3377685A1 publication Critical patent/EP3377685A1/fr
Application granted granted Critical
Publication of EP3377685B1 publication Critical patent/EP3377685B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D04B21/12—Open-work fabrics characterised by thread material
    • 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
    • D04B23/00—Flat warp knitting machines
    • D04B23/16—Flat warp knitting machines specially adapted for producing fabrics, or article blanks, of particular form or configuration
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • 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
    • D10B2505/10—Packaging, e.g. bags

Definitions

  • RASCHELMASCHINE NETWORK AND USE OF THE RASCHELMASCHINE TO
  • the present invention relates to a Raschel machine, a network and the use of Raschelmaschine for producing a network.
  • Nets are widely used as a material for the air-permeable packaging of loose goods such as hay, straw, vegetables, raw cotton or other plant parts. Nets can be made for example by Raschel machines. Such Raschel machines are produced, for example, by the textile machine factory Karl Mayer GmbH, Frankfurt, Germany.
  • Fig. 1 shows an example of a raschel machine with a manufactured net.
  • Fig. 2A shows an example of a first needle bar having first piercing needles.
  • Fig. 2B shows an example of a second needle bar with second piercing needles.
  • Fig. 3 shows a side view of a Raschel machine.
  • FIG. 4 illustrates a network according to an embodiment.
  • Fig. 5 shows a network according to another embodiment.
  • Fig. 6 shows a roll with rolled net.
  • FIG. 7 illustrates a method according to an embodiment.
  • Mesh or fabric thin tapes made of, for example, plastics, e.g. Polyolefins such as LLDPE (linear low-density polyethylene), LDPE (low-density polyethylene), HDPE (high-density polyethylene), PVC (polyvinyl chloride), EVA (ethylene-vinyl acetate) or a similar plastic are or are made, are processed into a net or tissue. Threads: The thin bands that make up the net.
  • plastics e.g. Polyolefins such as LLDPE (linear low-density polyethylene), LDPE (low-density polyethylene), HDPE (high-density polyethylene), PVC (polyvinyl chloride), EVA (ethylene-vinyl acetate) or a similar plastic are or are made, are processed into a net or tissue. Threads: The thin bands that make up the net.
  • plastics e.g. Polyolefins such as LLDPE (linear low-den
  • Warp threads The stitched together to form a loop combination mesh in the flow direction of the network. Shots: The threads with a zig-zag weave connecting the warp threads into a net.
  • MD Machine Direction
  • TD Transverse direction
  • FIG. 1 shows a schematic representation of components of a Raschel machine 100 and of a mesh 200 produced by the raschel machine.
  • a Raschel machine contains a multiplicity of further components, which have been omitted for illustration reasons. In the following, in particular those components are described which are considered important for understanding the teaching according to the invention.
  • the raschel machine 100 includes a plurality of first piercing needles 110 for guiding warp yarns 210.
  • the first piercing needles 110 are arranged along a first direction.
  • the first direction corresponds, for example, to the transver- direction TD and is perpendicular to the flow direction of the network.
  • the number of needles corresponds to the number of warp yarns 210 to be produced.
  • the raschel machine further includes a plurality of second needle needles 150 arranged along the first direction for guiding weft yarns 220.
  • the raschel machine includes a plurality of needles 180 arranged along the first direction for production of interlinked stitches of threads, whereby the warp threads 210 are produced.
  • the first piercing needles 110 are held by a first needle bar 120.
  • the second piercing needles 150 are held by a second needle bar 160.
  • the second needle bar 160 is reciprocated between each of two adjacent first piercing needles.
  • the distance between adjacent first hole needles 110 is greater than 25.4 mm (1 inch or inch).
  • the needles 180 are disposed on a metal base (plates) (not shown) which performs a reciprocating motion of the needles 180 up and down. In this way, the threads are looped into stitched stitches and warp threads are produced.
  • the first needle bar 120 having the first piercing needles 110 secured therein may be implemented as a metal base that moves in a circular manner.
  • the position of the first hole needles 110 is fixed along the transverse direction.
  • the second needle bar 160, to which the second piercing needles 150 are attached for guiding the weft threads reciprocates along the transverse direction between two adjacent first piercing needles, so that when the warp threads are moved in the machine direction, a zigzagging movement occurs. Pattern is formed. For example, a weft thread between two adjacent warp threads 210 is guided so that it connects to each other. This allows a knotless connection technology. At the connection points 215, the weft thread is in each case carried out by the warp thread 210.
  • the second needle bar 160 to which the second piercing needles 150 for guiding the weft threads are attached, periodically reciprocates along the transverse direction by the distance d between adjacent first piercing needles.
  • the distance d between adjacent first hole needles 1 10 is greater than 25, 4 mm.
  • the distance d between adjacent hole needles 110 may be greater than 28 mm, in particular greater than 30 mm.
  • the distance d may be, for example, 30,48 mm (1, 2 inches, or inches).
  • the distance d may be even greater for example, 38, 1 mm (1.5 inches), or more than 40 mm, especially more than 45 mm, for example 50.8 mm (2 inches).
  • the distance may be less than 101.6 mm (4 inches or inches).
  • a net can now be produced with a greater spacing of adjacent warp threads. Accordingly, the number of warp threads is reduced while maintaining the same width. For example, if 52 warp yarns are required for a conventional net to make a net with a standard width of 123 cm, now nets with the standard width of 123 cm can be made with far fewer warp threads. As an advantage, a lower final weight of the net produced can be caused by the same thickness of the threads used. Conversely, thicker filaments than usual can be used, thereby simplifying manufacture.
  • the thickness of the threads used can be adjusted so that with a reduced number of warp threads the same final weight as in the conventional machine is achieved.
  • the use of thicker threads reduces the risk of tearing the threads during manufacture. Accordingly, it is no longer necessary to interrupt the production because the thread is broken. As a result, the throughput can be increased and the manufacturing cost can be reduced.
  • the second needle bar 160 When dimensioning a suitable distance between adjacent perforated needles 110, it should be taken into consideration that according to the increased distance, the second needle bar 160 must move laterally by an equally enlarged distance. If the frequency remains constant, an increased lateral movement path can lead to an excessive loading of the drive motor for the second needle bar. Accordingly, the frequency can be reduced to prevent an overload of the motor at an increased lateral movement distance. However, a reduction of the frequency again causes a slower production of the network and thus leads to a reduction in the efficiency of Raschelmaschine. It has been found that with a distance d of adjacent hole needles 110 through 50.8 mm (2 inches), optimum throughput can be obtained.
  • the frequency can be halved compared to a Raschel machine with 25, 4 mm (1 inch) spacing of the hole needles 1 10.
  • the advantages associated with the increased spacing of the warp yarns of the finished net compensate for the disadvantages caused by halving the frequency.
  • the efficiency of the Raschel machine is deteriorated.
  • the weight savings due to the compared to 25, 4 mm increased distance to be low to compensate for the disadvantages caused by an adjustment of the frequency.
  • the distance s between adjacent second piercing needles 150 on the second needle bar may correspond to the distance d between adjacent first piercing needles 110. Furthermore, the distance between adjacent needles 180 may correspond to the distance d.
  • FIG 3 shows a side view of the raschel machine 100 with the net 200 produced.
  • a side view of a single first perforated needle 110 and of a single second perforated needle 150 is shown.
  • the stitched stitching needle 180 is arranged to perform an up and down motion.
  • the first hole needle 110 carries the generated warp thread
  • the second hole needle 150 carries the weft thread and moves back and forth between two adjacent first hole needles.
  • the warp yarn 210 is formed, and then the weft yarn 220 is performed.
  • the generated net 100 flows in the machine direction.
  • Fig. 4 shows a comparison between two generated nets 200.
  • Raschel machines are dimensioned to allow production of a net with a predefined width.
  • standard widths produced by a Raschel machine are 123 cm.
  • the first hole needles 110 are arranged at a distance of 25.4 mm or shorter. This results in the net 200 illustrated in the upper part of FIG. 4, which has a total width v (for example 123 cm) and a spacing t between adjacent warp threads 210 of 25.4 mm.
  • a net 200 can now be produced with a larger spacing u of adjacent warp threads 210. Accordingly, the number of warps 210 is reduced while maintaining the same width. For example, if 52 warp yarns are required for a conventional net to make a net with a standard width of 123 cm, now nets with the standard width of 123 cm with fewer warp yarns 210 can be made. For example, with a pitch u of adjacent warp yarns 210 of 30.48 mm (1.2 inches), 42 warp nets can be made. At a distance u of adjacent warp threads is 50.8 mm (2 inches or inches) the number of warp threads in the standard width 123 cm even less, for example about 26.
  • the threads can have a thickness or thickness greater than 90 ⁇ or 100 ⁇ .
  • Fig. 5 shows another embodiment of a network. Notwithstanding the configuration of the net shown in FIG. 4, the insertion point 251 and the discharge point 252 of the weft thread in / out of the warp thread are offset from one another in the machine direction.
  • the weft 220 may be fed back along the TD direction only after a certain number of stitches, for example three or four or more, to form the zigzag pattern. This can be achieved, for example, by a corresponding control of the movement of the second needle bar 160.
  • the second needle bar 160 may only move along the transverse direction after a while. This further weight of the network can be saved and ultimately the strength of the thread can be increased while maintaining the same weight.
  • the upper limit of the distance between adjacent first hole needles should be such that the net does not become too coarse to prevent the goods to be packaged falling out.
  • Fig. 6 shows an example of a rolled-up network.
  • Fig. 7 illustrates a method of fabricating a network.
  • the method comprises determining a lower limit for the thickness of a thread from which the warp threads are to be made (S100), determining a number of warp threads of the net (S110), such that the weight of the net is with warp threads the thread having the lower limit of the thickness does not fall below the weight of a standard net having a predetermined width, and determining a pitch (S 120) of the warp threads from the number of the warp threads and the predetermined width.
  • the method may further include producing warp yarns (S130) at the determined distance and passing (S140) weft yarns, each because between two adjacent warp threads, so that a zigzag pattern is formed, include.
  • the lower limit for the thickness of the thread can be determined such that it is ensured that the thread will not break during the production of the net.
  • the lower limit for the thickness of the thread can be set to 90 ⁇ or more.
  • the thread can thus have a thickness of at least 90 ⁇ or 100 ⁇ .
  • the predetermined weight of the net may correspond to the standard weight, for example 1 1 g / running meter (running meter).
  • the predetermined width may correspond to the standard width of nets (for example, 123 cm).
  • the number of warp threads may be less than 50, in particular less than 45, for example 42 or less. According to a further embodiment, the number of warp threads may be less than 35 or less than 30, for example 26 to 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
  • Knitting Machines (AREA)
  • Confectionery (AREA)
  • Woven Fabrics (AREA)
  • Supports For Plants (AREA)

Abstract

L'invention concerne un métier Rachel (100) comportant une pluralité de premières passettes (110) disposées le long d'une première direction pour le guidage de fils de chaîne (210), une pluralité de deuxièmes passettes (150) disposées le long de la première direction pour le guidage de fils de trame (220), et une pluralité d'aiguilles (180) disposées le long de la première direction pour la production de mailles de fils enchaînées les unes aux autres, de sorte que les fils de chaîne (210) soient produits. Les premières passettes (110) sont retenues par une première barrette à aiguilles (120), les deuxièmes passettes (150) sont retenues par une deuxième barrette à aiguilles (160), et la deuxième barrette à aiguilles (160) est déplacée suivant un mouvement de va-et-vient entre deux premières passettes (110) adjacentes. L'écartement entre des premières passettes (110) adjacentes est supérieur à 25,4 mm (1 inch ou pouce).
EP16782212.1A 2015-11-17 2016-10-13 Métier à tricoter type raschel, filet et utilisation dudit métier à tricoter pour la réalisation dudit filet Revoked EP3377685B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015119867.3A DE102015119867A1 (de) 2015-11-17 2015-11-17 Raschelmaschine, Netz und Verfahren zur Herstellung eines Netzes
PCT/EP2016/074610 WO2017084814A1 (fr) 2015-11-17 2016-10-13 Métier rachel, filet et utilisation du métier rachel pour la fabrication d'un filet

Publications (2)

Publication Number Publication Date
EP3377685A1 true EP3377685A1 (fr) 2018-09-26
EP3377685B1 EP3377685B1 (fr) 2021-07-21

Family

ID=57144963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16782212.1A Revoked EP3377685B1 (fr) 2015-11-17 2016-10-13 Métier à tricoter type raschel, filet et utilisation dudit métier à tricoter pour la réalisation dudit filet

Country Status (16)

Country Link
US (1) US10662559B2 (fr)
EP (1) EP3377685B1 (fr)
JP (1) JP2019502832A (fr)
CN (1) CN108291341A (fr)
AU (1) AU2016355754B2 (fr)
BR (1) BR112018009904A8 (fr)
CA (1) CA3005648C (fr)
CL (1) CL2018001302A1 (fr)
DE (2) DE202015008907U1 (fr)
DK (1) DK3377685T3 (fr)
ES (1) ES2891989T3 (fr)
GE (1) GEP20207085B (fr)
IL (1) IL259350B2 (fr)
NZ (1) NZ742650A (fr)
RU (1) RU2734874C2 (fr)
WO (1) WO2017084814A1 (fr)

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
DE202015008907U1 (de) 2015-11-17 2016-02-05 Karatzis S.A. Industrial & Hotelier Enterprises Raschelmaschine und Netz
JP6775805B2 (ja) * 2019-02-07 2020-10-28 松山毛織株式会社 ラップネット
CN110331510A (zh) * 2019-07-12 2019-10-15 武汉纺织大学 一种适用于针织横机编织用的双独立导纱系统
CN111560700B (zh) * 2020-05-25 2021-08-20 嘉兴博睿创业服务有限公司 经编机花梳导纱器
CN112760800B (zh) * 2021-01-23 2022-09-23 山东针巧经编有限公司 一种低缩率三明治生产工艺
CN113026194B (zh) * 2021-03-04 2022-06-21 常州市鑫辉网具有限公司 一种捆草网经编机梳栉运动方法和装置及捆草网经编机
DE102021124311A1 (de) 2021-09-21 2023-03-23 Rkw Agri Gmbh & Co. Kg Netz für Ballenpressen
IT202200005006A1 (it) * 2022-03-15 2023-09-15 Novatex Italia Spa Rete per rotopresse

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JP6273575B2 (ja) * 2014-02-13 2018-02-07 松山毛織株式会社 ラップネット
BR112018008998A8 (pt) * 2015-11-12 2019-02-26 Karatzis S A Ind & Hotelier Enterprises material para acondicionamento e método para a produção de material para acondicionamento
DE202015008907U1 (de) 2015-11-17 2016-02-05 Karatzis S.A. Industrial & Hotelier Enterprises Raschelmaschine und Netz
DE202016105662U1 (de) 2016-05-04 2016-10-27 Karatzis S.A. Industrial & Hotelier Enterprises Kunststoffnetz mit doppelten Ketten

Also Published As

Publication number Publication date
DE102015119867A1 (de) 2017-05-18
ES2891989T3 (es) 2022-02-01
RU2734874C2 (ru) 2020-10-23
CA3005648C (fr) 2020-12-29
BR112018009904A2 (pt) 2018-11-06
NZ742650A (en) 2019-05-31
AU2016355754A1 (en) 2018-06-07
US20180340277A1 (en) 2018-11-29
RU2018118230A3 (fr) 2019-12-18
EP3377685B1 (fr) 2021-07-21
US10662559B2 (en) 2020-05-26
BR112018009904A8 (pt) 2019-02-26
IL259350A (en) 2018-07-31
GEP20207085B (en) 2020-04-10
DK3377685T3 (da) 2021-10-11
RU2018118230A (ru) 2019-12-18
JP2019502832A (ja) 2019-01-31
AU2016355754B2 (en) 2019-09-12
WO2017084814A1 (fr) 2017-05-26
CA3005648A1 (fr) 2017-05-26
IL259350B2 (en) 2023-12-01
CN108291341A (zh) 2018-07-17
CL2018001302A1 (es) 2018-07-13
IL259350B1 (en) 2023-08-01
DE202015008907U1 (de) 2016-02-05

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