WO2014083535A3 - Reinforcement cord and tyre for vehicle wheels comprising such a reinforcement cord - Google Patents

Reinforcement cord and tyre for vehicle wheels comprising such a reinforcement cord Download PDF

Info

Publication number
WO2014083535A3
WO2014083535A3 PCT/IB2013/060490 IB2013060490W WO2014083535A3 WO 2014083535 A3 WO2014083535 A3 WO 2014083535A3 IB 2013060490 W IB2013060490 W IB 2013060490W WO 2014083535 A3 WO2014083535 A3 WO 2014083535A3
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcement cord
tyre
equal
vehicle wheels
winding
Prior art date
Application number
PCT/IB2013/060490
Other languages
French (fr)
Other versions
WO2014083535A2 (en
Inventor
Simone Agresti
Fabrizio Cristofani
Andrea Pieralli
Original Assignee
Pirelli Tyre S.P.A.
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 Pirelli Tyre S.P.A. filed Critical Pirelli Tyre S.P.A.
Publication of WO2014083535A2 publication Critical patent/WO2014083535A2/en
Publication of WO2014083535A3 publication Critical patent/WO2014083535A3/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/066—Reinforcing cords for rubber or plastic articles the wires being made from special alloy or special steel composition
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D07B2201/201—Wires or filaments characterised by a coating
    • D07B2201/2011—Wires or filaments characterised by a coating comprising metals
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • D07B2201/2025—Strands twisted characterised by a value or range of the pitch parameter given
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • D07B2201/2027—Compact winding
    • D07B2201/2028—Compact winding having the same lay direction and lay pitch
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2042—Strands characterised by a coating
    • D07B2201/2044—Strands characterised by a coating comprising polymers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/30—Inorganic materials
    • D07B2205/3021—Metals
    • D07B2205/3025—Steel
    • D07B2205/3046—Steel characterised by the carbon content
    • D07B2205/305—Steel characterised by the carbon content having a low carbon content, e.g. below 0,5 percent respectively NT wires
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/30—Inorganic materials
    • D07B2205/3021—Metals
    • D07B2205/3085—Alloys, i.e. non ferrous
    • D07B2205/3089—Brass, i.e. copper (Cu) and zinc (Zn) alloys
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2046—Tire cords
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2076—Power transmissions

Landscapes

  • Ropes Or Cables (AREA)
  • Tires In General (AREA)

Abstract

A reinforcement cord (10), configured to be used for example in a tyre (100) for vehicle wheels, comprises at least two steel wires (1) having a carbon content lower than or equal to about 0.40 % and chrome content lower than or equal to about 2% by weight. Such steel wires (1) are twisted together with a winding pitch (P) greater than or equal to about 14 mm. The use of steel having low carbon content allows the costs to be advantageously kept down without negatively impacting on the rigidity of the reinforcement cord. The possibility of using winding pitches of at least about 14 mm makes it possible to increase both the rigidity of the reinforcement cord and the productivity in the winding step, with consequent further reduction of the production costs, and without there being problems of fraying.
PCT/IB2013/060490 2012-11-30 2013-11-29 Reinforcement cord and tyre for vehicle wheels comprising such a reinforcement cord WO2014083535A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201261731775P 2012-11-30 2012-11-30
US61/731,775 2012-11-30
ITMI20122048 2012-11-30
ITMI2012A002048 2012-11-30

Publications (2)

Publication Number Publication Date
WO2014083535A2 WO2014083535A2 (en) 2014-06-05
WO2014083535A3 true WO2014083535A3 (en) 2014-07-24

Family

ID=47605626

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/060490 WO2014083535A2 (en) 2012-11-30 2013-11-29 Reinforcement cord and tyre for vehicle wheels comprising such a reinforcement cord

Country Status (1)

Country Link
WO (1) WO2014083535A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112022009757A2 (en) * 2019-12-17 2022-08-09 Pirelli METALLIC REINFORCEMENT CABLE FOR VEHICLE WHEEL TIRES

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303498A (en) * 1989-02-02 1994-04-19 Kabushiki Kaisha Kobe Sekio Sho Fishing line
US20090087678A1 (en) * 2005-11-10 2009-04-02 Hiroshi Sasabe Annular Metal Cord and Endless Metal Belt
WO2011116493A1 (en) * 2010-03-23 2011-09-29 Nv Bekaert Sa Open off-the-road cord with preformed filaments
US20120175035A1 (en) * 2009-07-03 2012-07-12 Michelin Recherche Et Technique S.A. Three-Layer Steel Cord that is Rubberized in Situ and has a 2+M+N Structure
US20120193006A1 (en) * 2009-10-16 2012-08-02 The Yokohama Rubber Co., Ltd. Pneumatic tire

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60500177A (en) 1982-12-09 1985-02-07 ザ　リ−ジエンツ　オブ　ザ　ユニバ−シテイ　オブ　カリフオルニア High-strength, low-carbon duplex steel rods and wires and their manufacturing methods
NL8503122A (en) 1985-11-13 1987-06-01 Bekaert Sa Nv METHOD FOR MANUFACTURING A HEEL CORE ELEMENT; SUCH HEEL CORE ELEMENTS INCLUDING HEEL CORE AND TIRES WITH ONE OR MORE OF SUCH HEEL CORE.
EP2268839B1 (en) 2008-03-04 2013-07-03 NV Bekaert SA Cold drawn low carbon steel filament and method of manufacturing said filament

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303498A (en) * 1989-02-02 1994-04-19 Kabushiki Kaisha Kobe Sekio Sho Fishing line
US20090087678A1 (en) * 2005-11-10 2009-04-02 Hiroshi Sasabe Annular Metal Cord and Endless Metal Belt
US20120175035A1 (en) * 2009-07-03 2012-07-12 Michelin Recherche Et Technique S.A. Three-Layer Steel Cord that is Rubberized in Situ and has a 2+M+N Structure
US20120193006A1 (en) * 2009-10-16 2012-08-02 The Yokohama Rubber Co., Ltd. Pneumatic tire
WO2011116493A1 (en) * 2010-03-23 2011-09-29 Nv Bekaert Sa Open off-the-road cord with preformed filaments

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Micro-alloyed steel cord constructions for tyres", RESEARCH DISCLOSURE, MASON PUBLICATIONS, HAMPSHIRE, GB, vol. 349, no. 84, 1 May 1993 (1993-05-01), XP007119044, ISSN: 0374-4353 *

Also Published As

Publication number Publication date
WO2014083535A2 (en) 2014-06-05

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