EP2964818B1 - Base de garniture de carde - Google Patents

Base de garniture de carde Download PDF

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Publication number
EP2964818B1
EP2964818B1 EP14708939.5A EP14708939A EP2964818B1 EP 2964818 B1 EP2964818 B1 EP 2964818B1 EP 14708939 A EP14708939 A EP 14708939A EP 2964818 B1 EP2964818 B1 EP 2964818B1
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EP
European Patent Office
Prior art keywords
foundation
layer
clothing
layers
conducting rubber
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.)
Active
Application number
EP14708939.5A
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German (de)
English (en)
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EP2964818A1 (fr
Inventor
Markus SCHILTER
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.)
Graf und Cie AG
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Graf und Cie AG
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Publication date
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Publication of EP2964818A1 publication Critical patent/EP2964818A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/86—Card clothing; Manufacture thereof not otherwise provided for with flexible non-metallic backing

Definitions

  • the invention relates to a foundation for a set of a card and a set with this foundation.
  • the fibers are processed after their cleaning and opening in a carding or carding machine, parallelized and provided in the form of fleece or slivers for further processing.
  • sets are used at various points in a card or card, for example on drums, lids or rollers.
  • the mainly used for this purpose trimmings are flexible or semi-rigid trimmings as well as all-steel sets.
  • flexible or semi-rigid sets of wire hooks are used, which are held in a foundation.
  • the foundation consists of one or more layers constructed of fleece or fabric layers. The various layers are joined together by bonding, vulcanizing or other thermal treatments to a foundation. Different tasks are assigned to the different layers, for example reinforcement of the foundation or determination of the flexibility.
  • the layers are determined in number and material composed.
  • foundations made of plastic are used, for example in semi-rigid trimmings.
  • the wire tokens are usually designed as U-shaped DoppelHokchen and pierced from one to the other side of the foundation and form with the wire ends the clothing tips.
  • Such a clothing with a layered foundation reveals the JP H07 166437 A .
  • the disclosed JP H07 40778 U a flexible set in which the wire hooks are designed as U-shaped Doppelphasekchen and pierced from one to the other side of the foundation and form with the wire ends the clothing tips.
  • the trimmings used in the various processes and machines must always fulfill more extensive functions.
  • the sets are to be provided with a high degree of precision, since there is a gap of less than 0.2 mm between the sets of the various elements hen is.
  • an electronic measurement of the carding distance is known from the prior art. In this case, a certain electrical voltage is applied to the wire hooks of the clothing and via an electrical discharge or a contact between the clothing tips of the opposing elements determines a distance between the clothing tips.
  • a certain electrical voltage is applied to the wire hooks of the clothing and via an electrical discharge or a contact between the clothing tips of the opposing elements determines a distance between the clothing tips.
  • such a measurement requires that a controlled and secure electrical connection to the individual wire hooks of a clothing is given.
  • the DE 648 230 a clothing with a foundation of different fabric layers, wherein in the foundation a cover layer or an intermediate layer of an electrically conductive rubber is provided.
  • the electrically conductive cover layer is provided on the side of the foundation, on which the protruding from the foundation tips of the wire hooks form the clothing tips.
  • the electrical conductivity in the disclosed embodiment serves to dissipate the static electricity. Due to the process of carding, the trimmings can be statically charged, which in turn negatively influences the carding process. To remedy this situation, an electrically conductive foundation was created. In the supplement reveals the DE 739 687 an additional electrically conductive layer at the bottom of the foundation.
  • the DE 198 26 542 C2 also discloses an electrically conductive foundation for dissipating the electrostatic charges. It has been proposed to provide at least in the cover layer electrically conductive material in the form of fine electrically conductive wires, wire sections or other electrically conductive particles. Important for the discharge of electrostatic charges is a conductive cover layer, wherein the cover layer in the foundation is on the side of the clothing tips. The side of the clothing tips is that side of a clothing which is assigned to the card drum. The admixture of electrically conductive material in the foundation their mechanical properties are changed. A random accumulation of the additions may result in partially disadvantageous properties.
  • an electrical resistance adapted to the needs of the conductor in this case the electrically conductive cover layer, is necessary for the initiation of an electrical voltage.
  • the magnitude of the electrical resistance is not important for the dissipation of static electricity as long as the electrical resistance is low.
  • the object of the invention is to provide a foundation, which results in a high contact reliability for each individual wire tokens and causes by a corresponding resistance effect protection of the wire tokens from overvoltage. This object is solved by the features of the independent claims.
  • the object is achieved in a first embodiment by a foundation for a clothing of a card which is constructed from a plurality of layers, wherein at least one cover layer of rubber and at least five fabric layers of cotton fabric are provided.
  • At least one intermediate layer connecting the fabric layers is provided.
  • an upper layer of an electrically conductive rubber with a layer thickness of 0.5 mm to 1.0 mm is provided on a side of the foundation opposite the cover layer.
  • a foundation for a garnish of a card which is constructed from a plurality of layers, wherein at least one cover layer of rubber and at least five fabric layers of cotton fabric are provided.
  • at least one intermediate layer connecting the fabric layers is provided between the fabric layers of cotton fabric.
  • the intermediate layer is made of a conductive rubber.
  • both the top layer and the intermediate layer are made of a conductive rubber.
  • the cover layer which is applied on the side of the clothing tips on the foundation, serves to form an easy-to-clean surface of the clothing and adjust the flexibility of the clothing tips in their movements during a carding process.
  • the upper layer provided in a first embodiment which is arranged on the side of the foundation opposite the cover layer, is formed from a conductive rubber.
  • the layer thickness of the upper layer is 0.5 mm to 1.0 mm, preferably 0.75 mm. Due to the high thickness of the upper layer results in a high contact reliability for the individual pierced through the foundation wire hooks.
  • the wire hooks are stung from the top through the foundation and come so to lie with their backs on the upper class. By the setting process, the backs of the wire hooks are pressed into the upper layer, which leads to a further improvement of the contact.
  • a high contact reliability is achieved by the arrangement of the intermediate layers of conductive rubber between the individual fabric layers. Even with movements of the wire hooks respectively the clothing tips, this has only a minor effect on the contact points of the wire hooks.
  • neither the formed shape of the clothing tips formed with the wire hooks nor the wire form used to form the wire hooks have an influence on the contact reliability. Due to the different applications of trimmings the clothing tips are exposed to greater or lesser movements, which also leads to no deterioration in the contacts of the individual wire hooks to the intermediate layers of conductive rubber even with larger movements.
  • the intermediate layers of conductive rubber have a layer thickness of 0.02 mm to 0.2 mm.
  • the intermediate layers of conductive rubber have a layer thickness of 0.05 mm to 0.15 mm.
  • the intermediate layers of conductive Rubber is used to connect the individual layers of fabric. The compound is achieved by a vulcanization process. This is known from the prior art.
  • the respective intermediate layer of conductive rubber is introduced in several layers.
  • the intermediate layer of conductive rubber is introduced into at least three layers.
  • Each layer has a layer thickness of less than 0.05 mm.
  • the intermediate layers arranged between the fabric layers and an additionally applied upper layer are formed from a conductive rubber.
  • the layer thickness of the upper layer can be reduced due to the likewise provided conductive rubber intermediate layers to a layer thickness of 0.25 to 1.0 mm, preferably 0.5 mm.
  • the conductive rubber used for the formation of the top layer as well as the intermediate layer has an electrical resistance in a high-resistance region, which causes protection of the wire hooks from overvoltages. When overvoltages occur, an electrical discharge can be caused between two adjacent tips of the wire hooks. This leads to the destruction of the clothing tips, respectively to change the tip shape.
  • the layer of conductive rubber for the intermediate layer as well as the upper layer has a surface resistance of more than 100 ⁇ and less than 35 k ⁇ . In order to ensure contact safety, it is necessary to provide a specific electrical contact resistance of more than 10 k ⁇ cm and less than 1 000 k ⁇ cm, due to the intended layer thicknesses of the intermediate or top layer of conductive rubber.
  • the conductive intermediate or upper layer thus acts as a distributed resistor, which means that all wire hooks are supplied with the same electrical voltage.
  • the determination of surface resistance and volume resistivity has been made on the basis of standard EN 61340-2-3 (March 2000).
  • the measurement object is placed on an electrically insulating plate. The measurement is carried out via a ring electrode with a standard weight of 2.5 kg. The measured value does not have to be converted to a specific value since the layer thickness has no relevance.
  • the test object is placed on a conductive plate. The measurement is carried out via a ring electrode with a standard weight of 2.5 kg. Subsequently, a conversion to the volume resistivity is necessary, see standard EN 61340-2-3.
  • FIG. 3 shows a schematic representation of a second non-inventive embodiment of a foundation 2.
  • the foundation 2 consists of five layers of fabric 6 made of a cotton fabric. Between the individual fabric layers 6, an intermediate layer 7 made of a conductive rubber is provided in each case.
  • the intermediate layer 7 made of conductive rubber has a layer thickness a of 0.02 to 0.2 mm.
  • the intermediate layer 7 of conductive rubber is only provided between the fabric layers 6.
  • a cover layer 5 made of rubber is attached to the lowermost fabric layer 6.
  • FIG. 4 shows a schematic representation of a third non-inventive embodiment of a foundation 2.
  • the foundation 2 is formed of five layers of fabric 6 and one, in each case between the fabric layers 6 arranged intermediate layer 7 of conductive rubber.
  • the intermediate layer 7 of conductive rubber is in each case made up of a first layer 10, a second layer 11 and a third layer 12 of conductive rubber.
  • the individual layers 10, 11, 12 of conductive rubber have a layer thickness c of less than 0.05 mm.
  • a cover layer 5 made of rubber is attached to the lowermost fabric layer 6.
  • FIG. 5 shows a schematic representation of an embodiment of a conductive clothing 20 with a foundation 2.
  • the foundation 2 can be formed as for example in the FIGS. 2 to 4 shown.
  • the wire hooks 4 are pierced through the entire foundation 2 and form on one side of the foundation 2 the clothing tips 3. On the other side of the foundation 2 protrude the wire hooks 4 with their backs 9 from the foundation 2 out.
  • the backs 9 of the wire hooks 4 are covered with an additional electrically insulating layer 15.
  • the insulating layer 15 is applied after the introduction of the wire hooks 4 in the foundation 2.
  • the insulating layer 15 may, as in FIG. 4 shown to be applied over the entire width b of the foundation. However, it is also an arrangement of the insulating layer 15 is conceivable in which the insulating layer 15 does not cover the entire width b of the foundation 2, but limited to the extension of the back 9 of the wire hook.
  • the insulating layer 15 can also be applied to the backs 9 of the wire hooks 4 without connection to the foundation 2. This is the insulating layer 15 by a subsequent attachment of the conductive clothing 20, for example, on a flat bar, positioned and fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (11)

  1. Fondation (2) pour une garniture (20) d'une carde composée d'une pluralité de couches (5, 6, 7, 8), dans laquelle au moins une couche de couverture (5) en caoutchouc et au moins cinq nappes textiles (6) en tissu de coton sont prévues, dans laquelle au moins une couche intermédiaire (7) reliant les nappes textiles est prévue respectivement entre les nappes textiles (6) en tissu de coton, caractérisée en ce que sur un côté de la fondation, opposé à la couche de couverture (5), une couche supérieure (8) en caoutchouc électriquement conducteur d'une épaisseur de couche (e) de 0,5 mm à 1,0 mm est prévue.
  2. Fondation (2) selon la revendication 1, caractérisée en ce que la couche supérieure (8) en caoutchouc conducteur présente une épaisseur de couche (e) de 0,75 mm.
  3. Fondation (2) selon les revendications 1 ou 2, caractérisée en ce que la couche intermédiaire (7) en caoutchouc électriquement conducteur est prévue avec une épaisseur de couche (a) de 0,02 à 0,2 mm.
  4. Fondation (2) selon la revendication 3, caractérisée en ce que la couche intermédiaire (7) en caoutchouc conducteur présente une épaisseur de couche (a) de 0,05 à 0,15 mm.
  5. Fondation (2) selon l'une quelconque des revendications 3 ou 4, caractérisée en ce que la couche intermédiaire (7) en caoutchouc conducteur est incorporée dans plusieurs couches (10, 11, 12).
  6. Fondation (2) selon la revendication 5, caractérisée en ce que la couche intermédiaire (7) en caoutchouc conducteur est incorporée dans au moins trois couches (10, 11, 12), chaque couche (10, 11, 12) présentant une épaisseur de couche (c) de moins de 0,05 mm.
  7. Fondation (2) selon l'une quelconque des revendications précédentes, caractérisée en ce que la couche (7, 8) en caoutchouc électriquement conducteur présente une résistance de surface de plus de 100 Ω et moins de 35 kΩ.
  8. Fondation (2) selon l'une quelconque des revendications précédentes, caractérisée en ce que la couche (7, 8) en caoutchouc électriquement conducteur présente une résistance transversale électrique de plus de 10 kΩcm et moins de 1'000 kΩcm.
  9. Fondation (2) selon l'une quelconque des revendications précédentes, caractérisée en ce que la couche (7, 8) en caoutchouc électriquement conducteur présente une dureté de 40 à 95 Shore A.
  10. Garniture (20) pour une carde avec une fondation (2) et une pluralité de pointes de garniture (3), dans laquelle les pointes de garniture (3) sont formées de petits crochets de fil de fer (4) à deux pointes (3), en forme de U, piqués à travers la fondation (2) et d'un dos (9) reliant les deux pointes (3), caractérisée en ce que la fondation (2) est réalisée selon l'une quelconque des revendications 1 à 9.
  11. Garniture (20) selon la revendication 10, caractérisée en ce que les dos (9) des petits crochets de fil de fer (4) sont recouverts d'une couche (15) électriquement isolante.
EP14708939.5A 2013-03-06 2014-02-26 Base de garniture de carde Active EP2964818B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5482013A CH707682A2 (de) 2013-03-06 2013-03-06 Fundation für eine Garnitur einer Karde.
PCT/IB2014/000202 WO2014135941A1 (fr) 2013-03-06 2014-02-26 Base de garniture de carde

Publications (2)

Publication Number Publication Date
EP2964818A1 EP2964818A1 (fr) 2016-01-13
EP2964818B1 true EP2964818B1 (fr) 2019-01-30

Family

ID=50239692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14708939.5A Active EP2964818B1 (fr) 2013-03-06 2014-02-26 Base de garniture de carde

Country Status (4)

Country Link
EP (1) EP2964818B1 (fr)
CN (1) CN105209672B (fr)
CH (1) CH707682A2 (fr)
WO (1) WO2014135941A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH710221A1 (de) * 2014-10-09 2016-04-15 Graf + Cie Ag Garnitur für die Bearbeitung von textilen Fasern
CN107338511A (zh) * 2016-09-28 2017-11-10 桐乡守敬应用技术研究院有限公司 一种针布
DE102017101863A1 (de) 2017-01-31 2018-08-02 TRüTZSCHLER GMBH & CO. KG Detektionsvorrichtung an einer Spinnereivorbereitungsmaschine und dafür vorgesehene Deckelstabgarnitur
CN109234869A (zh) * 2018-11-09 2019-01-18 山东华兴纺织集团有限公司 一种用于绒辊机的辊轴
CN114836853B (zh) * 2022-05-25 2023-07-07 金轮针布(江苏)有限公司 一种防静电高握持力弹性针布的成型工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648230C (de) 1935-09-26 1937-07-26 Continental Gummi Werke Akt Ge Karde, deren Kratzenbeschlaege eine Unterlage aus gummierten Gewebelagen und einer Gummidecklage aufweisen
DE739687C (de) 1940-10-11 1943-10-01 Continental Gummi Werke Ag Karde, deren Kratzenbeschlaege eine Unterlage aus gummierten Gewebelagen und einer Gummidecklage aufweisen
GB1462174A (en) * 1973-04-26 1977-01-19 English Card Clothing Foundation for card clothing
JPH03199429A (ja) * 1989-12-27 1991-08-30 Kanai Hiroyuki 耐熱針布用基布
CN2068102U (zh) * 1990-02-16 1990-12-26 无锡市第三纺织器材厂 特种橡塑底布
JPH07166437A (ja) * 1993-12-16 1995-06-27 Kanai Hiroyuki 紡機用針布
JPH0740778U (ja) * 1993-12-28 1995-07-21 金井 宏之 起毛針布
DE19826542C2 (de) 1998-06-15 2001-05-31 Graf & Co Ag Kratzenbeschlag für Karden und/oder Krempelmaschinen
CN2748482Y (zh) * 2004-10-12 2005-12-28 黄斌 一种人造毛皮针布
DE102006016832B4 (de) * 2006-04-07 2021-04-15 Trützschler GmbH & Co Kommanditgesellschaft Garniturträger für einen Kardendeckelbelag

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN105209672A (zh) 2015-12-30
CH707682A2 (de) 2014-09-15
EP2964818A1 (fr) 2016-01-13
WO2014135941A1 (fr) 2014-09-12
CN105209672B (zh) 2018-02-06

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