GB1165853A - Oriented Concentric Sheath-Core Filaments and Pneumatic Tires Reinforced therewith - Google Patents
Oriented Concentric Sheath-Core Filaments and Pneumatic Tires Reinforced therewithInfo
- 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
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.
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)
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 |
-
1968
- 1968-01-31 GB GB501568A patent/GB1165853A/en not_active Expired
Cited By (13)
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 |