EP0644283B1 - Method to produce a composite yarn consisting of textile threads and metallic wire, and composite yarn thus produced - Google Patents

Method to produce a composite yarn consisting of textile threads and metallic wire, and composite yarn thus produced Download PDF

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Publication number
EP0644283B1
EP0644283B1 EP94112329A EP94112329A EP0644283B1 EP 0644283 B1 EP0644283 B1 EP 0644283B1 EP 94112329 A EP94112329 A EP 94112329A EP 94112329 A EP94112329 A EP 94112329A EP 0644283 B1 EP0644283 B1 EP 0644283B1
Authority
EP
European Patent Office
Prior art keywords
metallic wire
composite yarn
textile threads
textile
metallic
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.)
Expired - Lifetime
Application number
EP94112329A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0644283A1 (en
Inventor
Valentino Zille
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.)
Industrie Tessili Avianesi - Ita SpA
Original Assignee
Industrie Tessili Avianesi - Ita SpA
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 Industrie Tessili Avianesi - Ita SpA filed Critical Industrie Tessili Avianesi - Ita SpA
Publication of EP0644283A1 publication Critical patent/EP0644283A1/en
Application granted granted Critical
Publication of EP0644283B1 publication Critical patent/EP0644283B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/12—Threads containing metallic filaments or strips

Definitions

  • This invention concerns a method to produce a composite yarn consisting of textile threads and metallic wire and concerns also the composite yarn thus produced, as set forth in the respective main claims.
  • the composite yarn thus produced is employed in the manufacture of knitted underwear and outer knitted garments,, shirts, jeans, furnishing fabrics, curtains, blankets, carpets and other textile products.
  • the state of the art covers various types of composite yarns consisting of a metallic wire associated with one or more textile threads. These composite yarns are employed in the manufacture of fabrics, knitted goods, carpets, etc. which possess the properties of providing screening against electromagnetic waves or antistatic properties and earth the body of the person who wears clothes made with such fabrics.
  • these composite yarns are also employed in the production of fabrics that reduce physical pains associated with the breaking of bones inasmuch as they make normal the electrical charge of the body and reduce the differences of potential occurring in the body, for these differences of potential are the cause of pains due to the breaking of bones.
  • the philosophies which lead to the composite textile-metallic yarns are substantially two in number and affect the conformation of the metallic component.
  • a first philosophy provides for the use of segments of metallic wire which are assembled with the textile fibre component.
  • a second philosophy, from which this invention is derived, provides for the use of one or more continuous metallic wires.
  • the present invention is concerned with composite yarns employing continuous metallic wire.
  • the prior art document IT-BZ-92A000019 discloses a composite yarn in which at least two textile threads are wound on a taut metallic wire, which stays substantially straight substantially in the centre between the two textile threads.
  • This kind of yarn can be made only with a cording machine of the type used to produce cords or with a braiding machine.
  • Another method of the state of the art is to wind together textile threads and metallic wire, the metallic wire being alone by itself or combined with a textile filament; the composite yarn thus produced does not ensure that the metallic wire becomes located in a protected and covered position within the composite yarn, and this fact too creates problems of use of the metal and problems of allergy and of suitability to be worn.
  • EP-A-445872 describes a textile yarn composed of at least a metallic wire and at least a textile thread, where the purpose of the metallic wire is to increase the resistance of the composite yarn thus obtained, the composite yarn being used to produce articles of clothing which are particularly subject to stress, such as gloves and trousers.
  • the composite yarn produced according to EP'872 is intended for specific uses (the meat industry, the metal industry, the wood industry) where a particular resistance is required of the articles of clothing worn.
  • the metallic wire used in EP'872 serves to increase the resistance of the composite yarn and not to obtain an electromagnetic screening effect on the body of the person wearing the article of clothing obtained with the composite yarn.
  • the composite yarn as disclosed by EP'872 is obtained by twisting together a metallic wire with one or more textile threads, using traditional twisting methods (column 3, lines 1 and 2).
  • the metallic wire is not positioned straight and substantially central to the textile threads, thus remaining completely covered by them, it is wound in a spiral around them, creating problems of contact with the skin, possible allergic reactions, problems in dressing, injuries in the case of breakages, etc.
  • the presence of the metallic wire protruding from the composite yarn can create problems and possible breakages, and consequently the whole composite yarn may have to be discarded.
  • the method according to the invention enables a composite yarn to be produced from a continuous metallic wire and at least two textile threads, the textile threads having a fineness of between 5 and 142 tex (a metric number (Nm) between 7,000 and 200,000 metres per kilogram).
  • the continuous metallic wire has a diameter which may vary between 0.010 mm. and 0.100 mm., depending on the final method of use of the composite yarn.
  • the metal of which the metallic wire consists will be suitable for the end use of the textile product and therefore may be stainless steel, copper coated with silver and/or gold, aluminium which has been surface-passivated, etc.
  • the metallic wire may possibly be coated with a resin, which advantageously is of a conductive type.
  • the metallic wire is replaced by a metallic strap.
  • the metallic strap replacing the metallic wire has on one or both of its sides a protective adhering film of polyester, viscose or nylon.
  • the metallic wire or metallic strap has a cross-section of a polygonal shape.
  • the method according to the invention arranges for the metallic wire and textile threads to undergo a first coupling operation in which the threads and wire are united according to a desired reciprocal positioning.
  • the coupled threads and wire which have their axes substantially parallel and linear then undergo a twisting step in which the metallic wire and textile threads are bonded together by a number of required twists about the lengthwise axis of the resulting composite yarn.
  • the metallic wire coupled with two textile threads becomes located in a lateral position covered by the two coupled textile threads, so that the coupled metallic wire according to the invention is within the outer periphery of the finished yarn.
  • the properties of the metallic wire and textile threads employed and also the parameters of the twisting step vary according to the end use of the composite yarn according to the invention.
  • the reference number 10 in the attached figures denotes generally a method to produce a composite yarn 11 consisting of a metallic wire 12 and at least two textile threads 13.
  • the method 10 to produce a composite yarn 11 according to the invention includes a first coupling step 14 in which the continuous metallic wire 12 is caused to cooperate with at least two textile threads 13 so as to produce a coupled thread 15 that comprises at least two textile threads 13 and at least one metallic wire 12.
  • the coupling of the wire and threads takes place by first coupling the two textile threads and then by doubling the metallic wire with the coupled threads, taking care to place the metallic wire 12 between the two textile threads 13 in the first coupling step 14.
  • This coupling step 14 may be carried out with the common coupling machines employed in the traditional textile industry.
  • the coupling machines employed may be of the type with a thread-guide or of the type with a grooved roller.
  • the textile threads 13 or wire 12 are unwound by being drawn from a hank positioned on a stationary swift.
  • the invention arranges that in every successive step in the production of the composite yarn there is always unwinding from a hank positioned on a stationary swift.
  • the coupled thread 15 undergoes thereafter a twisting step 16, in which the metallic wire 12 and textile threads 13 forming the coupled thread 15 are bonded together by imparting a desired number of twists which wind the metallic wire 12 and threads 13 about the lengthwise axis of the composite yarn 11 thus produced.
  • This second twisting step 16 can be carried out with the common twisting machines employed in the traditional textile industry.
  • the metallic wire 12 has a diameter which may vary from 0.01 to 0.10 mm. depending on the end use of the composite yarn 11, while the textile threads 13 employed have a count of between 5 and 142 tex (metric number between 7.000 to 200.000 metres/kg.).
  • the number of twists imparted to the coupled thread 15 in the twisting step 16 will vary according to the end use of the composite yarn 11 and will generally range from 150 to 1000 twists per metre.
  • the metallic wire 12 and the textile threads 13 undergo the twisting step 16 and are therefore spirally arranged about an ideal axis.
  • the composite yarn 11 according to the invention consists of a metallic wire 12 coupled to and twisted with two textile threads 13
  • the metallic wire 12 becomes positioned in a lateral position in the zone of mutual support of the two textile threads 13.
  • the metallic wire 12 becomes located in particular in an internal recess within a substantially V-shaped space 17 created at the point of mutual contact of the two twisted textile threads 13 (see Fig.3).
  • This positioning entails protection of the metallic wire 12 by being covered by part of the two textile threads 13, which cover the metallic wire 12 at least partly.
  • the textile threads 13 create protective spines at the two sides of the metallic wire 12, so that the metallic wire 12 does not emerge from the spines of the textile threads 13.
  • the metallic wire 12 is sunk in the textile yarn which thus acts as a protection, insulation and elastic absorption of the mechanical tensions which may occur in the metallic wire 12.
  • a fabric made with the yarn according to the invention behaves, when in contact with the skin, like a normal textile fabric since the textile threads are the threads which come in contact with the skin, and at the same time behaves like a Faraday cage owing to the screening effect of the metallic wire.
  • the method according to the invention makes it also possible to employ as metallic wire 12 a copper wire with a coating of gold and/or silver.
  • the textile part of the fabric undergoes a required controlled shrinkage so that small segments of the metallic wire 12 may come to the surface; the shrinkage of the textile part may occur by washing the fabric for instance.
  • the metallic wire emerging in segments from the composite yarn 11 forming the fabric, comes into contact with the wearer's skin. This contact is sought for and desired since it enables the composite yarn 11 to act not only as a Faraday cage but also as a conductor, thus making uniform the electrical charges in the body of the person wearing the garment made with the composite yarn 11 according to the invention.
  • the composite yarn 11 according to the invention makes possible the attenuation of the differences of electrical potential created within the body and deemed to be the cause of pains associated with the breaking of bones.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Woven Fabrics (AREA)
  • Ropes Or Cables (AREA)
EP94112329A 1993-09-17 1994-08-08 Method to produce a composite yarn consisting of textile threads and metallic wire, and composite yarn thus produced Expired - Lifetime EP0644283B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD930186A IT1262199B (it) 1993-09-17 1993-09-17 Procedimento per la produzione di un filo composto costituito da filo tessile e filo metallico e filo composto cosi' ottenuto
ITUD930186 1993-09-17

Publications (2)

Publication Number Publication Date
EP0644283A1 EP0644283A1 (en) 1995-03-22
EP0644283B1 true EP0644283B1 (en) 1998-10-28

Family

ID=11421383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112329A Expired - Lifetime EP0644283B1 (en) 1993-09-17 1994-08-08 Method to produce a composite yarn consisting of textile threads and metallic wire, and composite yarn thus produced

Country Status (6)

Country Link
EP (1) EP0644283B1 (it)
AT (1) ATE172760T1 (it)
DE (1) DE69414213T2 (it)
DK (1) DK0644283T3 (it)
IT (1) IT1262199B (it)
NO (1) NO943460L (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2315199A1 (es) * 2007-09-14 2009-03-16 Jose Vicente Portales Reig Hilo para tejido con capacidades atenuadoras y aislantes contra ondas electromagneticas.
WO2011009982A1 (es) * 2009-07-20 2011-01-27 Portales Reig Jose Vicente MEJORAS INTRODUCIDAS EN LA PATENTE DE INVENCION Nº P-200702449 POR: HILO PARA TEJIDO CON CAPACIDADES ATENUADORAS Y AISLANTES CONTRA ONDAS ELECTROMAGNÉTICAS

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH690686A5 (de) * 1996-07-01 2000-12-15 Spoerry & Co Ag Verfahren zur Herstellung eines elektrisch leitenden Garnes, elektrisch leitendes Garn und Verwendung des elektrisch leitenden Garnes.
KR20010047285A (ko) * 1999-11-19 2001-06-15 류근태 고속 방사 섬유를 이용한 기계 자수용 메탈릭 커버링사와그 제조방법
DE102010022243A1 (de) * 2010-05-21 2011-11-24 K + R Sax Gmbh Garnsystem, textiles Flächenmaterial und Raumgebilde mit einem textilen Flächematerial
WO2016084030A1 (en) * 2014-11-26 2016-06-02 Tubitak A double-layer elastic fabric reflecting broad-spectrum electromagnetic wave and a production method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987613A (en) * 1965-07-29 1976-10-26 Burlington Industries, Inc. Process for preparing textiles without static charge accumulation and resulting product
US3882667A (en) * 1970-03-13 1975-05-13 Brunswick Corp Method of making a composite yarn
DE2337978C2 (de) * 1973-07-26 1983-12-01 Nippon Seisen Co., Ltd., Hirakata, Osaka Antistatisches Garn
US4793130A (en) * 1986-06-20 1988-12-27 Mitsubishi Rayon Co., Ltd. Thin-metal-wire conjugated yarn
US4776160A (en) * 1987-05-08 1988-10-11 Coats & Clark, Inc. Conductive yarn
DE58903416D1 (de) * 1988-06-13 1993-03-11 Nukleare Sicherheits Prod Garn und verfahren zu dessen herstellung sowie verwendung desselben.
JPH03227422A (ja) * 1990-01-30 1991-10-08 Osamu Nakakido 銅線入りカバリング糸及び布帛
FR2659091B1 (fr) * 1990-03-05 1992-07-03 Schappe Sa Fil composite a haute resistance aux coupures et articles comprenant ce fil composite.
IT1260314B (it) * 1992-06-02 1996-04-05 Filati in fibra tessile accoppiati a filo metallico e sistema di produzione.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2315199A1 (es) * 2007-09-14 2009-03-16 Jose Vicente Portales Reig Hilo para tejido con capacidades atenuadoras y aislantes contra ondas electromagneticas.
WO2009034212A1 (es) * 2007-09-14 2009-03-19 Hilatura Cientifica, S.L. Hilo para tejido con capacidades atenuadoras y aislantes contra ondas electromagneticas
WO2011009982A1 (es) * 2009-07-20 2011-01-27 Portales Reig Jose Vicente MEJORAS INTRODUCIDAS EN LA PATENTE DE INVENCION Nº P-200702449 POR: HILO PARA TEJIDO CON CAPACIDADES ATENUADORAS Y AISLANTES CONTRA ONDAS ELECTROMAGNÉTICAS

Also Published As

Publication number Publication date
DE69414213T2 (de) 1999-03-25
NO943460L (no) 1995-03-20
DE69414213D1 (de) 1998-12-03
ITUD930186A1 (it) 1995-03-17
EP0644283A1 (en) 1995-03-22
IT1262199B (it) 1996-06-19
ITUD930186A0 (it) 1993-09-17
ATE172760T1 (de) 1998-11-15
DK0644283T3 (da) 1999-07-12
NO943460D0 (no) 1994-09-16

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