GB1121871A - Treatment of oriented crystalline polyester filaments - Google Patents
Treatment of oriented crystalline polyester filamentsInfo
- Publication number
- GB1121871A GB1121871A GB36025/65A GB3602565A GB1121871A GB 1121871 A GB1121871 A GB 1121871A GB 36025/65 A GB36025/65 A GB 36025/65A GB 3602565 A GB3602565 A GB 3602565A GB 1121871 A GB1121871 A GB 1121871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- particles
- seconds
- denier
- bed
- 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
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/006—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a fluid bed
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Artificial Filaments (AREA)
Abstract
1,121,871. Polyethylene terephthalate filaments. IMPERIAL CHEMICAL INDUSTRIES Ltd. 12 Aug., 1966, No. 36025/65. Heading B5B. High tenacity filaments are made from polyethylene terephthalate in which the intrinsic viscosity of the polymer is 0.85 to 1.00 dl. per gram and which have uniform properties throughout their length with a tenacity of at least 8 grams per denier in the form of a yarn of up to 10,000 denier and not more than 1 turn per inch twist, an extension of at least 10% and a shrinkage of less than 8% and a 2 % modulus of at least 80 g.p.d. and a shrinkage force at 150‹ C. of less than 0.35 g.p.d. Such filaments may be made by positively passing filament yarns of up to 10,000 denier with not more than one turn per inch twist between feed means to take-up or winding means rotating at predetermined relative speeds, which may be the same, greater or slower, wherein the filaments are passed through a heating zone for a time between 1 and 12 seconds, the heating zone being equipped with positive heat exchange means comprising a multitude of solid particles maintained precisely at a temperature Œ3‹ C. in the range 240 to 264‹ C., that is to say 25 to 1‹ C. below the melting temperature of the filaments. In a preferred method, the filaments are relaxed 3 to 4% whilst passing through the heating zone at a speed of at least 300m. per minute using treating times of the order of 2 to 5 seconds in which the tension is controlled by suitable means. Alternatively the filaments may be heat set at constant length while passing through the heating zone at speeds of at least 300m. per minute using treating times of the order to 2 to 5 seconds. In both these methods speeds of 1,000m. per minute are preferred. Dwell times, depending on denier, may vary preferably between 1 and 12 seconds. Thus for 1,000 denier yarn, a dwell time of 1 to 5 seconds, preferably 2.5 to 3.5 seconds, is suitable. Path lengths through the hot zone may be varied by adjusting the number of passes, i.e. numbers of wraps round a presystem in a single bed, or by using a number of beds in series. Suitably, the filaments are preheated before being brought into contact with the solid particles. The solid particles are suitably of cross-section between 1 mm. and 50 microns and may be heated by means of heating coils immersed in a bed of such particles, by circulating heating fluids through a suitable jacket around a container in which the particles are situated, by heating the particles electrically by heated elements which are immersed in the particles, or by using heated elements which form a wall of the container. The gas stream itself may be heated during or before passage through the bed of particles. The solid particles are suitably maintained in a fluidized condition by a gas stream which is heated and maintained at the required temperature within Œ1‹ C. The particles may be brought to the required temperature in a suitable bed and metered by gravity downwards on to the filaments followed by bringing the particles back into the bed by suitable means. The heat relaxation process is preferred if low shrinkage properties are more important than yarn modulus, but if yarn modulus is more important, heat setting at constant length is preferable. In both cases heat setting at the stated highest possible setting temperature gives the best result. Oriented crystalline filaments so made are useful in the form of rubber reinforcements including V-belts, conveyor belts, tyres, hose and fabrics, including fabrics coated with polyvinyl chloride and neoprene.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB36025/65A GB1121871A (en) | 1965-08-23 | 1965-08-23 | Treatment of oriented crystalline polyester filaments |
US573181A US3413797A (en) | 1965-08-23 | 1966-08-18 | Treatment of oriented crystalline polyester filaments |
DE19661669451 DE1669451A1 (en) | 1965-08-23 | 1966-08-22 | Process for the production of high strength threads from polyethylene terephthalate |
FR73840A FR1490211A (en) | 1965-08-23 | 1966-08-23 | Processing of oriented crystalline polyester filaments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB36025/65A GB1121871A (en) | 1965-08-23 | 1965-08-23 | Treatment of oriented crystalline polyester filaments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1121871A true GB1121871A (en) | 1968-07-31 |
Family
ID=10384134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36025/65A Expired GB1121871A (en) | 1965-08-23 | 1965-08-23 | Treatment of oriented crystalline polyester filaments |
Country Status (3)
Country | Link |
---|---|
US (1) | US3413797A (en) |
DE (1) | DE1669451A1 (en) |
GB (1) | GB1121871A (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1110751A (en) * | 1964-06-22 | 1968-04-24 | Goodyear Tire & Rubber | Tire cord |
US3966867A (en) * | 1968-08-31 | 1976-06-29 | Akzona Incorporated | Manufacture of unique polyethylene terephthalate fiber |
US3838561A (en) * | 1968-08-31 | 1974-10-01 | Akzona Inc | Unique polyethylene terephthalate fiber and yarn |
US3889457A (en) * | 1968-10-11 | 1975-06-17 | Ici Ltd | Macrofilamentary yarns |
US3690362A (en) * | 1970-09-28 | 1972-09-12 | Allied Chem | High strength polyethylene terephthalate yarn and cord produced therefrom |
US3998921A (en) * | 1971-07-10 | 1976-12-21 | Bayer Aktiengesellschaft | Process for production of polyester threads |
US3957936A (en) * | 1971-07-22 | 1976-05-18 | Raduner & Co., Ag | High temperature process for modifying thermoplastic filamentous material |
US3775961A (en) * | 1971-11-22 | 1973-12-04 | Phillips Fibers Corp | Yarn process |
DE2161967C3 (en) * | 1971-12-14 | 1984-07-26 | Hoechst Ag, 6230 Frankfurt | Process for the production of a wire from high molecular weight, linear polyesters |
US4043985A (en) * | 1971-12-14 | 1977-08-23 | Hoechst Aktiengesellschaft | Tire monofilaments |
US4026973A (en) * | 1973-08-31 | 1977-05-31 | Teijin Limited | Process for preparing heat-resistant aromatic polyester filaments |
US4003974A (en) * | 1975-04-04 | 1977-01-18 | E. I. Du Pont De Nemours And Company | Continuous spin-drawing process for preparing polyethylene terephthalate yarns |
US4251481A (en) * | 1979-05-24 | 1981-02-17 | Allied Chemical Corporation | Continuous spin-draw polyester process |
JPS57144106A (en) * | 1981-03-04 | 1982-09-06 | Toyo Tire & Rubber Co Ltd | Pneumatic tire of high uniformity |
US4607481A (en) * | 1982-09-07 | 1986-08-26 | Celanese Corporation | Process for spiral wrapping reinforcement filaments |
US4516394A (en) * | 1982-09-07 | 1985-05-14 | Celanese Corporation | Yarn package for spiralers |
US4529655A (en) * | 1984-05-23 | 1985-07-16 | E. I. Du Pont De Nemours And Company | Interlaced polyester industrial yarns |
US4622187A (en) * | 1984-05-23 | 1986-11-11 | E. I. Du Pont De Nemours And Company | Continuous process for making interlaced polyester yarns |
US4690866A (en) * | 1984-07-09 | 1987-09-01 | Teijin Limited | Polyester fiber |
US4702067A (en) * | 1985-04-23 | 1987-10-27 | Nippon Gakki Seizo Kabushiki Kaisha | Archery string |
EP0657567A1 (en) * | 1993-12-07 | 1995-06-14 | Teijin Seiki Company Limited | Process and apparatus for heat-setting twist of yarn |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB838785A (en) * | 1956-11-30 | 1960-06-22 | Improvements in or relating to the heat treatment of filaments, fibres, threads, film | |
BE566145A (en) * | 1957-03-27 | |||
NL113969C (en) * | 1957-04-06 | |||
US3061941A (en) * | 1957-08-17 | 1962-11-06 | Dunlop Tire & Rubber Corp | Apparatus for the heat treatment of thermoplastic materials |
US3052989A (en) * | 1958-05-06 | 1962-09-11 | Cotton Silk & Man Made Fibres | Heat treatment of filaments, fibres, threads, films and sheet material |
CA655087A (en) * | 1958-08-01 | 1963-01-01 | L. Dahlstrom Richard | Method for effecting controlled relaxation of yarns of synthetic polymeric compositions |
NL253093A (en) * | 1959-06-26 | |||
US3030173A (en) * | 1959-09-30 | 1962-04-17 | Hoechst Ag | Process for the uniform preparation of shaped structures such as filaments or foils from high-melting linear polyesters |
US3216187A (en) * | 1962-01-02 | 1965-11-09 | Du Pont | High strength polyethylene terephthalate yarn |
-
1965
- 1965-08-23 GB GB36025/65A patent/GB1121871A/en not_active Expired
-
1966
- 1966-08-18 US US573181A patent/US3413797A/en not_active Expired - Lifetime
- 1966-08-22 DE DE19661669451 patent/DE1669451A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1669451A1 (en) | 1972-02-17 |
US3413797A (en) | 1968-12-03 |
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