DE2900938A1 - Verfahren zum herstellen nicht gewebter stoffsubstrate fuer mit kohlenstofffasern verstaerkte zusammengesetzte gebilde - Google Patents

Verfahren zum herstellen nicht gewebter stoffsubstrate fuer mit kohlenstofffasern verstaerkte zusammengesetzte gebilde

Info

Publication number
DE2900938A1
DE2900938A1 DE19792900938 DE2900938A DE2900938A1 DE 2900938 A1 DE2900938 A1 DE 2900938A1 DE 19792900938 DE19792900938 DE 19792900938 DE 2900938 A DE2900938 A DE 2900938A DE 2900938 A1 DE2900938 A1 DE 2900938A1
Authority
DE
Germany
Prior art keywords
staple fibers
web
fabric
fibers
staple
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.)
Withdrawn
Application number
DE19792900938
Other languages
German (de)
English (en)
Inventor
Marice William Higgs
Alan John Sherrin
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.)
Dunlop Ltd
Original Assignee
Dunlop Ltd
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 Dunlop Ltd filed Critical Dunlop Ltd
Publication of DE2900938A1 publication Critical patent/DE2900938A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/026—Knitted fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4242—Carbon fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/08—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of fibres or yarns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Composition of linings ; Methods of manufacturing
    • F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2313/00—Elements other than metals
    • B32B2313/04—Carbon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/125—Discs; Drums for disc brakes characterised by the material used for the disc body
    • F16D65/126—Discs; Drums for disc brakes characterised by the material used for the disc body the material being of low mechanical strength, e.g. carbon, beryllium; Torque transmitting members therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Composite Materials (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Inorganic Fibers (AREA)
  • Moulding By Coating Moulds (AREA)
DE19792900938 1978-01-12 1979-01-11 Verfahren zum herstellen nicht gewebter stoffsubstrate fuer mit kohlenstofffasern verstaerkte zusammengesetzte gebilde Withdrawn DE2900938A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB118078 1978-01-12

Publications (1)

Publication Number Publication Date
DE2900938A1 true DE2900938A1 (de) 1979-07-19

Family

ID=9717546

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792900938 Withdrawn DE2900938A1 (de) 1978-01-12 1979-01-11 Verfahren zum herstellen nicht gewebter stoffsubstrate fuer mit kohlenstofffasern verstaerkte zusammengesetzte gebilde

Country Status (5)

Country Link
JP (1) JPS54101985A (US07122603-20061017-C00045.png)
AU (1) AU517708B2 (US07122603-20061017-C00045.png)
DE (1) DE2900938A1 (US07122603-20061017-C00045.png)
FR (1) FR2414574A1 (US07122603-20061017-C00045.png)
GB (1) GB2012671B (US07122603-20061017-C00045.png)

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US5646076A (en) * 1979-12-21 1997-07-08 Bortz; David N. Friction controlling devices and methods of their manufacture
JPS5727746A (en) * 1980-07-25 1982-02-15 Toho Beslon Co Three dimensional fiber reinforcing composite material and its manufacture
FR2506672A1 (fr) * 1981-06-02 1982-12-03 Lorraine Carbone Procede de fabrication de disques de frottement
US4790052A (en) * 1983-12-28 1988-12-13 Societe Europeenne De Propulsion Process for manufacturing homogeneously needled three-dimensional structures of fibrous material
FR2584106B1 (fr) * 1985-06-27 1988-05-13 Europ Propulsion Procede de fabrication de structures tridimensionnelles par aiguilletage de couches planes de materiau fibreux superposees et materiau fibreux utilise pour la mise en oeuvre du procede
GB8513609D0 (en) * 1985-05-30 1985-07-03 Otty M Making reinforced resinous sheet material
FR2587992B1 (fr) * 1985-10-02 1995-07-13 Europ Propulsion Materiau composite carbone-carbone pour pieces de friction, et son application aux dispositifs de freinage
GB8602003D0 (en) 1986-01-28 1986-03-05 Lawton P G Carbonisable fibre assembly
US5882781A (en) * 1986-01-28 1999-03-16 Aerospace Preforms Limited Shaped fibrous fabric structure comprising multiple layers of fibrous material
US5388320A (en) 1987-01-27 1995-02-14 Aerospace Preforms Limited Production of shaped filamentary structures
JPS6360155A (ja) * 1986-08-28 1988-03-16 株式会社神戸製鋼所 不織布を原料とした炭素／炭素複合材の製造方法
JPH0699187B2 (ja) * 1986-08-28 1994-12-07 株式会社神戸製鋼所 不織布よりなる炭素繊維で強化された炭素複合材のプリフォーム体
GB8700805D0 (en) * 1987-01-15 1987-02-18 Dunlop Ltd Carbon fibre materials
US5705264A (en) * 1987-01-27 1998-01-06 Aerpspace Preforms Limited Production of shaped filamentary structures
US4983451A (en) * 1987-08-05 1991-01-08 Kabushiki Kaisha Kobe Seiko Sho Carbon fiber-reinforced carbon composite material and process for producing the same
FR2626294B1 (fr) * 1988-01-26 1990-07-13 Carbone Ind Procede de fabrication d'une structure fibreuse tridimensionnelle en vue de la realisation ulterieure d'une piece en un materiau composite et machine pour sa mise en oeuvre
WO1991001397A1 (en) * 1989-07-25 1991-02-07 Dunlop Limited Manufacture of carbon fibre preform
US5217770A (en) * 1991-08-15 1993-06-08 The B. F. Goodrich Company Braided shaped filamentary structures and methods of making
CA2077130C (en) * 1991-09-04 2003-04-29 Edward Lee Morris Carbon fiber reinforced carbon/carbon composite and method of its manufacture
US5392500A (en) * 1991-12-02 1995-02-28 Societe Europeenne De Propulsion Process for the manufacture of a fibrous preform formed of refractory fibers for producing a composite material article
FR2686907B1 (fr) * 1992-02-05 1996-04-05 Europ Propulsion Procede d'elaboration de preformes fibreuses pour la fabrication de pieces en materiaux composites et produits obtenus par le procede.
FR2696221B1 (fr) * 1992-09-30 1995-06-09 Aircraft Braking Systems Corp Appareil et procede pour fabriquer des disques de frein en carbone.
GB9310592D0 (en) * 1993-05-22 1993-07-14 Dunlop Ltd Ultra-high performance carbon composites
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US5662855A (en) * 1994-05-17 1997-09-02 The B.F. Goodrich Company Method of making near net shaped fibrous structures
US5515585A (en) * 1994-07-25 1996-05-14 The Bf Goodrich Company Process for forming needled fibrous structures using determined transport depth
US6029327A (en) * 1994-07-25 2000-02-29 The B.F. Goodrich Company Process for forming fibrous structures with predetermined Z-fiber distributions
US6405417B1 (en) 1994-07-25 2002-06-18 Goodrich Corporation Process for forming fibrous structures with predetermined Z-fiber distributions
US5858890A (en) * 1994-07-25 1999-01-12 The B. F. Goodrich Company Laminar fibrous structure having Z-fibers that penetrate a constant number of layers
US5654059A (en) * 1994-08-05 1997-08-05 Amoco Corporation Fiber-reinforced carbon and graphite articles and method for the production thereof
US5546880A (en) * 1994-12-29 1996-08-20 The Bf Goodrich Company Annular filamentary structures and methods of making
US5908792A (en) * 1995-10-04 1999-06-01 The B. F. Goodrich Company Brake disk having a functional gradient Z-fiber distribution
FR2754031B1 (fr) * 1996-09-30 1998-12-18 Carbone Ind Elaboration de preformes fibreuses pour la fabrication de disques de frein en materiau composite
US6105223A (en) * 1997-04-30 2000-08-22 The B. F. Goodrich Company Simplified process for making thick fibrous structures
EP1233934B1 (en) 1999-11-25 2004-02-18 Dunlop Aerospace Limited Wear resistant articles
GB0112893D0 (en) 2001-05-25 2001-07-18 Dunlop Aerospace Ltd Refractory-carbon composite brake friction elements
GB2403989B (en) 2003-07-15 2006-06-14 Dunlop Aerospace Ltd Composite article
MX2012000821A (es) 2009-07-17 2012-05-08 Carbon Fibre Preforms Ltd Una matriz de fibra y metodo para hacer una matriz de fibra.
DE102009055912A1 (de) 2009-11-27 2011-06-09 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Verfahren zur kontinuierlichen Herstellung von Stapelfasergelegen aus endlich langen Verstärkungsfasern mit gerichteter Faserorientierung
EP2642007B1 (en) * 2010-12-24 2018-10-24 Toray Industries, Inc. Method for producing carbon fiber aggregate, and method for producing carbon fiber-reinforced plastic
JP6577697B2 (ja) * 2014-03-27 2019-09-18 帝人株式会社 炭素繊維フェルト、その製造方法、及び液流通型電解槽
DE102014013867A1 (de) * 2014-09-24 2016-03-24 Carl Freudenberg Kg Verwendung eines Carbonfaservliesstoffs als Isoliermaterial
CN109968699B (zh) * 2019-04-11 2024-05-28 大庆市九天新型保温建筑材料有限公司 斜面缝扎机及其制作的缝扎网织增强纤维保温板
CN112250463B (zh) * 2020-09-15 2022-05-24 航天特种材料及工艺技术研究所 一种喷射成型法制备隔热瓦坯体的方法
FR3115047B1 (fr) * 2020-10-13 2023-07-28 Safran Landing Systems Structure fibreuse aiguilletée pour la réalisation de préforme fibreuse annulaire de disque de frein
CN114248437A (zh) * 2021-11-30 2022-03-29 吉林大学 一种连续纤维编织体增强纤维复合材料3d打印方法

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Publication number Priority date Publication date Assignee Title
DE2027132A1 (US07122603-20061017-C00045.png) * 1970-06-03 1971-12-09
GB1282421A (en) * 1968-08-09 1972-07-19 Robinson & Sons Ltd Non-woven fabric
DE2103052B2 (de) * 1971-01-22 1975-01-16 Zentralnoje Projektno-Konstruktorskoje I Technologitscheskoje Buero Ministerstwa Ljochkoj Promyschlennosti Latwijskoj Ssr, Riga (Sowjetunion) Verfahren zur Herstellung von Faservliesstoffen aus Abfällen der Leder-, Rauchwaren-, Textil- und Zellulosenbetriebe
DE2542966A1 (de) * 1974-09-27 1976-04-08 Union Carbide Corp Verfahren zur herstellung eines selbstbindenden kohlenfaservlieses
FR2292793A1 (fr) * 1973-12-21 1976-06-25 Vysoka Skola Strojni Textilni Procede d'amelioration de la stabilite de la forme et des proprietes mecaniques des feutres aiguilletes
DE7509146U (de) * 1974-03-22 1978-04-20 N.V. Bekaert S.A., Zwevegem (Belgien) Verbundstoffbahn, insbesondere filtertuch

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GB1447029A (en) * 1972-07-21 1976-08-25 Hyfil Ltd Carbon fibre composite
JPS5314878A (en) * 1976-07-21 1978-02-09 Ichikawa Woolen Textile Manufacture of unwoven fabric with optional width

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
GB1282421A (en) * 1968-08-09 1972-07-19 Robinson & Sons Ltd Non-woven fabric
DE2027132A1 (US07122603-20061017-C00045.png) * 1970-06-03 1971-12-09
DE2103052B2 (de) * 1971-01-22 1975-01-16 Zentralnoje Projektno-Konstruktorskoje I Technologitscheskoje Buero Ministerstwa Ljochkoj Promyschlennosti Latwijskoj Ssr, Riga (Sowjetunion) Verfahren zur Herstellung von Faservliesstoffen aus Abfällen der Leder-, Rauchwaren-, Textil- und Zellulosenbetriebe
FR2292793A1 (fr) * 1973-12-21 1976-06-25 Vysoka Skola Strojni Textilni Procede d'amelioration de la stabilite de la forme et des proprietes mecaniques des feutres aiguilletes
DE7509146U (de) * 1974-03-22 1978-04-20 N.V. Bekaert S.A., Zwevegem (Belgien) Verbundstoffbahn, insbesondere filtertuch
DE2542966A1 (de) * 1974-09-27 1976-04-08 Union Carbide Corp Verfahren zur herstellung eines selbstbindenden kohlenfaservlieses

Non-Patent Citations (1)

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Title
Chemiefaser-Textilindustrie Juni 1978, S. 531-535 *

Also Published As

Publication number Publication date
GB2012671B (en) 1982-06-16
AU517708B2 (en) 1981-08-20
GB2012671A (en) 1979-08-01
FR2414574A1 (fr) 1979-08-10
AU4312579A (en) 1979-07-19
JPS54101985A (en) 1979-08-10
FR2414574B1 (US07122603-20061017-C00045.png) 1981-03-06

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