US20020094739A1 - Flat fabric - Google Patents

Flat fabric Download PDF

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Publication number
US20020094739A1
US20020094739A1 US10/004,665 US466501A US2002094739A1 US 20020094739 A1 US20020094739 A1 US 20020094739A1 US 466501 A US466501 A US 466501A US 2002094739 A1 US2002094739 A1 US 2002094739A1
Authority
US
United States
Prior art keywords
threads
fabric
strips
fringe portions
weave
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.)
Abandoned
Application number
US10/004,665
Other languages
English (en)
Inventor
Heinz Lutke-Foller
Agnes Lutke-Foller
Stefan Butenkemper
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.)
Haver and Boecker OHG
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to FIRMA HAVER & BOECKER reassignment FIRMA HAVER & BOECKER ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUTENKEMPER, STEFAN, LUTKE-FOLLER, HEINZ (DECEASED)
Publication of US20020094739A1 publication Critical patent/US20020094739A1/en
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]

Definitions

  • the present invention relates to a flat fabric, e.g., a wire fabric, and more particularly to a fabric of a type having warp threads and weft threads running transversely to the warp threads.
  • Fabrics are generally known and used in a wide variety of applications. They include two thread systems which normally intersect one another at a right angle. One group of threads runs in longitudinal direction of the fabric and is called warp threads. Thus, the warp threads are of a same length as the fabric. The other transverse thread group runs in the direction that is determinative for the width of the fabric. These threads are called weft threads.
  • the warp and weft threads can intersect in many ways by passing the weft threads over and under the warp threads to realize a desired weave pattern. Widely used weave patterns include the so-called linen weave or the twill weave. From these types of patterns, various derived weaves can be formed.
  • the linen weave involves a continuously repeating pattern of a weft thread passing over and under the warp thread, whereby the next weft thread, as viewed in the direction of the warp threads, is positioned on the other side of the warp threads.
  • the twill weave is characterized by warp threads which pass over at least two weft threads, whereby the next following weft thread is positioned above the warp thread.
  • the parts of the warp threads that are positioned above the weft threads are further positioned in offset relationship.
  • a flat fabric includes a body portion having opposite fringe portions and first threads running in one direction and second threads running transversely to the first threads, wherein one of the first and second threads is made of an electrically conductive material and the other one of the first and second threads is made of an electrically conductive material surrounded by an insulating envelope, or made entirely of an electrically insulating material, wherein the opposite fringe portions are realized exclusively by the threads of electrically conductive material.
  • the body portion has an overall size, with the fringe portions covering about 40% of the overall size, the strips covering about 20% of the overall size, and the central portion covering about 40% of the overall size.
  • all size is used here in a generic sense and refers to the width or length of the fabric depending as to whether the fringe portions are free of weft threads or warp threads.
  • these numeric data are given by way of example only, as the true lengths of the fringe portions and the adjacent strips may stay the same, when enlarging or reducing the fabric in size, i.e. in length or width, so that the central portion is dependent on the size of the fabric.
  • the first threads are weft threads of electrically conductive material
  • the second threads are warp threads made of electrically conductive material surrounded by an envelope of electrically insulating material, or made entirely of electrically insulating material.
  • This configuration is currently a preferred embodiment, as it is advantageous for fabrication of a flat fabric according to the invention.
  • the strips are formed by a twill weave, whereas the central portion is formed by a linen weave or by several types of weave patterns.
  • a twill weave By forming the strips in accordance with a twill weave, singling or bonding together of the threads is facilitated.
  • the number of electrically conductive wires to be bonded together can be varied because of the twill weave of the strips adjacent the outer fringe portions. For example, a so-called 5+1 weave allows bonding together of five threads whereas the next following thread can be utilized as single thread. It is also conceivable to vary the number of threads being bonded together in the direction of the insulated threads, when using a different weave pattern.
  • the segments of the warp threads passing over and under the weft threads can be positioned in offset relationship, preferably by one waft thread, to the strips formed in twill weave.
  • the twill weave of the strips should then be so designed that two threads of electrically conductive material can be bonded together in each outer fringe portion, while the offset relationship by one waft thread results on the other side in an endless weft thread which can then be used in an insulating fabric as resistance wire.
  • FIG. 1 is a first embodiment of a flat fabric according to the present invention
  • FIG. 1 a is a cross sectional view, on an enlarged scale, of a warp thread used in the present invention
  • FIG. 2 is a second embodiment of a flat fabric according to the present invention.
  • FIG. 3 is a third embodiment of a flat fabric according to the present invention.
  • FIG. 1 there is shown a first embodiment of a flat fabric according to the present invention having a body portion, generally designated by reference numeral 10 .
  • the body portion 10 is made of a plurality of warp threads 11 in parallel, spaced-apart relationship and weft threads 12 running transversely at a right angle to the warp threads 11 in parallel, spaced-apart relationship.
  • the warp threads 11 and the weft threads 12 are made of metal so as to be electrically conductive.
  • the warp threads 11 are made of a core metal fiber 16 which is surrounded by an envelope 17 of electrically insulating, and thus non-conductive material.
  • a suitable material would be, for example, plastic.
  • the weft threads 12 terminate on opposite ends in fringe portions 12 a which extend beyond both outer warp threads 11 and include single weft threads 12 .
  • the free fringe portions 12 a of all weft threads 12 are bonded together in accordance with a predetermined pattern, whereby some weft threads 12 remain separate and run individually, as indicated by reference numeral 12 b .
  • the free fringe portions 12 a of the weft threads 12 of the flat fabric may also be electrically connected to other components, or may also be insulated or provided with connectors.
  • the body portion 10 of the fabric has a central portion 13 which is formed by a linen weave.
  • the warp threads 11 and the weft threads 12 intersect in a continuously repeating pattern by passing one of the threads 11 or 12 over and under the other one of the threads 12 or 11 .
  • Adjacent one side of the central portion 13 is a strip 14
  • Adjacent the other side of the central portion 13 is a strip 15 , whereby both strips 14 , 15 are made by a twill weave.
  • the twill weave is configured as 5/1 weave, i.e., the warp threads 11 pass over five weft threads 12 , whereas the next following weft thread 12 is positioned above.
  • weft threads 12 are guided individually past the weft threads 11 to form the fringe portions 12 a , with the five weft threads 12 bonded together, and the next following weft thread 12 remaining single.
  • the strips 14 , 15 are formed by seven warp treads 11 .
  • the fringe portions 12 a may cover about 40% of the overall size of the body portion 10 , while the strips 14 , 15 cover about 20% of the overall size, and the central portion 13 covers about 40% of the overall size.
  • FIG. 1 shows that singling and bonding together of the fringe portions 12 a of the weft threads 12 is facilitated by the twill weave of the strips 14 , 15 .
  • the strips 14 , 15 are formed by such a weave that singling or bonding together of the fringe portions 12 a of the weft threads 12 is given by the weave pattern.
  • FIG. 2 there is shown a second embodiment of a flat fabric according to the present invention. Parts corresponding with those in FIG. 1 are denoted by identical reference numerals and not explained again.
  • this embodiment provision is made for a configuration of the strips 14 , 15 in twill weave of nine warp threads by a so-called 3/2 weave, i.e., the warp threads 11 pass over three weft threads 12 while the next two weft threads 12 are placed over the warp threads 11 .
  • the central portion 13 is identical to the embodiment of FIG. 1 and is formed through a linen weave.
  • the fringe portions 12 a of the weft threads 12 are bonded together by alternately bonding together three and two weft threads 12 .
  • FIG. 3 shows another embodiment of a fabric according to the present invention, in which the strips 14 , 15 are formed by a twill weave in a so-called 2/2 weave, i.e. the warp threads 11 are alternately passed over and under two weft threads 12 . As a consequence, two weft threads 12 are respectively bonded together at the fringe portions 12 a .
  • FIG. 3 further shows that the warp threads 11 between both strips 14 , 15 are shifted by a weft thread 12 so as to attain an endless configuration of the weft threads 12 .
  • the weft threads 12 may be utilized in an insulating fabric as resistance wire.
  • the warp threads 11 and the weft threads 12 are made of metallic wires, in the event the fabric is constructed for use as wire fabric.
  • a flat fabric according to the present invention is useful for the production of electronic items.
  • the warp threads 11 and the weft threads 12 are made of wires of relatively small diameter so that the fabric may also be referred to a fine fabric.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Woven Fabrics (AREA)
  • Structure Of Printed Boards (AREA)
US10/004,665 2000-12-16 2001-12-04 Flat fabric Abandoned US20020094739A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20021305U DE20021305U1 (de) 2000-12-16 2000-12-16 Flächiges Gewebeelement
DE20021305.9 2000-12-16

Publications (1)

Publication Number Publication Date
US20020094739A1 true US20020094739A1 (en) 2002-07-18

Family

ID=7950146

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/004,665 Abandoned US20020094739A1 (en) 2000-12-16 2001-12-04 Flat fabric

Country Status (3)

Country Link
US (1) US20020094739A1 (de)
EP (1) EP1215319A3 (de)
DE (1) DE20021305U1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10400364B1 (en) * 2016-09-20 2019-09-03 Apple Inc. Fabrics with conductive paths

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10337397A1 (de) * 2003-04-17 2004-11-04 Gkd - Gebr. Kufferath Ag Gewebe mit magnetisch aktiven Fäden sowie Anordnung aus einem Oberband mit einem solchen Gewebe und einem Unterband
DE102006007518A1 (de) * 2006-02-16 2007-08-23 Haver & Boecker Ohg Abschirmgewebe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898663A (en) * 1956-06-04 1959-08-11 Kitahara Kiyoshi Method of producing narrow fabrics by cutting a specially woven wide fabric containing synthetic fibre wefts, by the aid of electrical heating of interwoven metal wires
US4840202A (en) * 1985-11-08 1989-06-20 Veb Forschung Und Entwicklung Electrically conductive two component twisted yarn and fabrics for textile flat goods for clean rooms and clean room wearing apparel
US5102727A (en) * 1991-06-17 1992-04-07 Milliken Research Corporation Electrically conductive textile fabric having conductivity gradient

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433239A (en) * 1945-06-23 1947-12-23 Russell Mfg Co Electroconductive fabric and process of making the same
FR1346121A (fr) * 1963-01-31 1963-12-13 Dispositif pour réaliser les connexions électriques dans un montage
US3378629A (en) * 1965-08-09 1968-04-16 Continental Copper & Steel Ind Woven conductor and method of forming the same
US3711627A (en) * 1969-12-12 1973-01-16 K Maringulov Device for electrical connection of electric and electronic components and method of its manufacture
US4651163A (en) * 1985-05-20 1987-03-17 Burlington Industries, Inc. Woven-fabric electrode for ink jet printer
JPS63237308A (ja) * 1987-03-25 1988-10-03 シャープ株式会社 異方性導電体
US5239125A (en) * 1990-06-19 1993-08-24 The United States Of America As Represented By The Secretary Of The Army EMI/RFI shield

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898663A (en) * 1956-06-04 1959-08-11 Kitahara Kiyoshi Method of producing narrow fabrics by cutting a specially woven wide fabric containing synthetic fibre wefts, by the aid of electrical heating of interwoven metal wires
US4840202A (en) * 1985-11-08 1989-06-20 Veb Forschung Und Entwicklung Electrically conductive two component twisted yarn and fabrics for textile flat goods for clean rooms and clean room wearing apparel
US5102727A (en) * 1991-06-17 1992-04-07 Milliken Research Corporation Electrically conductive textile fabric having conductivity gradient

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10400364B1 (en) * 2016-09-20 2019-09-03 Apple Inc. Fabrics with conductive paths

Also Published As

Publication number Publication date
DE20021305U1 (de) 2001-03-01
EP1215319A3 (de) 2003-09-17
EP1215319A2 (de) 2002-06-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FIRMA HAVER & BOECKER, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LUTKE-FOLLER, HEINZ (DECEASED);BUTENKEMPER, STEFAN;REEL/FRAME:012360/0736

Effective date: 20011203

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION