GB1165853A - Oriented Concentric Sheath-Core Filaments and Pneumatic Tires Reinforced therewith - Google Patents

Oriented Concentric Sheath-Core Filaments and Pneumatic Tires Reinforced therewith

Info

Publication number
GB1165853A
GB1165853A GB501568A GB501568A GB1165853A GB 1165853 A GB1165853 A GB 1165853A GB 501568 A GB501568 A GB 501568A GB 501568 A GB501568 A GB 501568A GB 1165853 A GB1165853 A GB 1165853A
Authority
GB
United Kingdom
Prior art keywords
tyre
sheath
core
filaments
core filaments
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
Application number
GB501568A
Inventor
Norwin Caley Pierce
Cecil Everett Reese
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1165853A publication Critical patent/GB1165853A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/0042—Reinforcements made of synthetic materials
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/48—Tyre cords

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

1,165,853. Oriented concentric sheath-core filaments. E. I. DU PONT DE NEMOURS & CO. 31 Jan., 1968 [31 Jan., 1967], No. 5015/68. Heading B5B. Oriented concentric sheath-core filaments suitable for tyre reinforcement comprise a sheath of a synthetic linear aliphatic polyamide having a melting point of at least 180‹ C. and a glass transition temperature (Tg), less than 100‹ C. and a core consisting of a polyamide having recurring aromatic or cycloaliphatic rings as an integral part of the main polymer chain and having a Tg of at least 140‹ C., or a polyester having an initial modulus of at least 60 grams per denier. The filaments comprising at least 30% and preferably about 40-70% by weight of sheath polymer and the remainder core polymer. The melting point of both polymers should not exceed 350‹ C. In an example, molten polyhexamethylene adipamide having a relative viscosity of 45 and molten polyethylene terephthalate having a relative viscosity of 30 are simultaneously extruded at the same volumetric flow rates through each of the extrusion surfaces of a spinneret assembly adapted for the melt-spinning of concentric sheath-core filaments to form 34 sheath-core filaments with the polyamide as the sheath and the polyester as the core. The filaments are air quenched and drawn at a stretch ratio of 5À8 over a snubbing pin at 100‹ C. and a hot pipe having a surface temperature profile of 150/ 170/190‹ C. to give a yarn having a denier of 216. Using conventional procedures except as noted, the yarn is converted into an 1800 denier tyre cord, dipped, dried at constant length, hotstretched 5% at 200‹ C. and built into an 850 x 14 4-ply tyre. The tyre is cured by heating in a press at 130-147‹ C. for 20 minutes. The partially cured tyre is then inflated to 48 p.s.i.g. and placed in an oven at 139-159‹ C. for 45 minutes. A flat-spot is produced in the tyre by inflating to 22 p.s.i.g., heating to 77‹ C. and then loading the tyre to 1086 pounds for 2 hours, i.e. until the tyre has cooled. The radial deformation in mils, is measured as the flatspot depth and in this case was found to be 124. In another example, 50-50 sheath-core filaments are similarly formed, the core in this case being a polymer (PACM-12) of 57 relative viscosity prepared from dodecanedioic acid and bis - (4 - aminocyclohexyl) - methane having a trans-trans isomer content of 70% by weight. The flat spot produced in the tyre following the procedure of the previous example is 133 mils.
GB501568A 1967-01-31 1968-01-31 Oriented Concentric Sheath-Core Filaments and Pneumatic Tires Reinforced therewith Expired GB1165853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61311767A 1967-01-31 1967-01-31

Publications (1)

Publication Number Publication Date
GB1165853A true GB1165853A (en) 1969-10-01

Family

ID=24455933

Family Applications (1)

Application Number Title Priority Date Filing Date
GB501568A Expired GB1165853A (en) 1967-01-31 1968-01-31 Oriented Concentric Sheath-Core Filaments and Pneumatic Tires Reinforced therewith

Country Status (1)

Country Link
GB (1) GB1165853A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311386A2 (en) * 1987-10-07 1989-04-12 Toray Industries, Inc. High-tenacity conjugated fiber and process for preparation thereof
EP0331501A2 (en) * 1988-03-03 1989-09-06 Bridgestone Corporation Pneumatic radial tyres
EP0355822A2 (en) * 1988-08-24 1990-02-28 Sumitomo Rubber Industries Limited Tire with nylon-polyester composite reinforcement cords
EP0471088A1 (en) * 1990-03-06 1992-02-19 Bridgestone Corporation Pneumatic radial tire
US5221384A (en) * 1988-05-10 1993-06-22 The Yokohama Rubber Co., Ltd. Pneumatic radial tire with a belt covering layer reinforced with core-sheath composite fiber cords
WO2010011086A3 (en) * 2008-07-22 2010-08-12 Kolon Industries, Inc. Poly(ethyleneterephthalate) tire cord, and tire comprising the same
EP3617355A1 (en) * 2018-06-14 2020-03-04 Continental Reifen Deutschland GmbH Reinforcement cord for elastomeric products, in particular for vehicle tyres and elastomeric product

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311386A3 (en) * 1987-10-07 1989-11-15 Toray Industries, Inc. High-tenacity conjugated fiber and process for preparation thereof
EP0311386A2 (en) * 1987-10-07 1989-04-12 Toray Industries, Inc. High-tenacity conjugated fiber and process for preparation thereof
EP0331501A2 (en) * 1988-03-03 1989-09-06 Bridgestone Corporation Pneumatic radial tyres
EP0331501A3 (en) * 1988-03-03 1990-01-17 Bridgestone Corporation Pneumatic radial tyres
US5221384A (en) * 1988-05-10 1993-06-22 The Yokohama Rubber Co., Ltd. Pneumatic radial tire with a belt covering layer reinforced with core-sheath composite fiber cords
EP0355822A2 (en) * 1988-08-24 1990-02-28 Sumitomo Rubber Industries Limited Tire with nylon-polyester composite reinforcement cords
EP0355822A3 (en) * 1988-08-24 1990-04-11 Sumitomo Rubber Industries Limited Tire with nylon-polyester composite reinforcement cords
EP0471088A1 (en) * 1990-03-06 1992-02-19 Bridgestone Corporation Pneumatic radial tire
EP0471088A4 (en) * 1990-03-06 1992-04-15 Bridgestone Corporation Pneumatic radial tire
WO2010011086A3 (en) * 2008-07-22 2010-08-12 Kolon Industries, Inc. Poly(ethyleneterephthalate) tire cord, and tire comprising the same
CN102105626B (en) * 2008-07-22 2012-07-04 可隆工业株式会社 Poly(ethyleneterephthalate) tire cord, and tire comprising the same
US9062394B2 (en) 2008-07-22 2015-06-23 Kolon Industries, Inc. Poly(ethyleneterephthalate) tire cord, and tire comprising the same
EP3617355A1 (en) * 2018-06-14 2020-03-04 Continental Reifen Deutschland GmbH Reinforcement cord for elastomeric products, in particular for vehicle tyres and elastomeric product

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees