WO2014129991A1 - A yarn production method and a super hightenacity yarn acquired with this method - Google Patents
A yarn production method and a super hightenacity yarn acquired with this method Download PDFInfo
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- WO2014129991A1 WO2014129991A1 PCT/TR2014/000036 TR2014000036W WO2014129991A1 WO 2014129991 A1 WO2014129991 A1 WO 2014129991A1 TR 2014000036 W TR2014000036 W TR 2014000036W WO 2014129991 A1 WO2014129991 A1 WO 2014129991A1
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- Prior art keywords
- yarn
- godet
- polymer
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- applying
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 230000003247 decreasing effect Effects 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 16
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 16
- 238000006116 polymerization reaction Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 12
- 238000010791 quenching Methods 0.000 claims description 10
- 239000011261 inert gas Substances 0.000 claims description 9
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 8
- 235000019253 formic acid Nutrition 0.000 claims description 8
- 230000000171 quenching effect Effects 0.000 claims description 8
- 238000000137 annealing Methods 0.000 claims description 7
- 238000002425 crystallisation Methods 0.000 claims description 7
- 230000008025 crystallization Effects 0.000 claims description 7
- 230000002040 relaxant effect Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000010622 cold drawing Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 11
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract description 4
- 239000004952 Polyamide Substances 0.000 abstract description 3
- 229920002647 polyamide Polymers 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract description 2
- 239000004677 Nylon Substances 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- 229920002302 Nylon 6,6 Polymers 0.000 description 3
- 150000008430 aromatic amides Chemical class 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
-
- 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
- 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
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
Definitions
- the present invention relates to a yarn production method which is developed to produce superhigh tenacity polyamide 6.6 yarn for reinforcement fabric used in vehicle tire, and a super high tenacity yarn acquired with this method.
- the polymer coming out of the nozzles is in form of filaments, it is cooled down to the polymer's glass transition temperature (Tg) by quenching with conditioned air and during the quenching filaments are crystallized.
- Tg polymer's glass transition temperature
- the air in the blowing system is applied on the yarn in a certain humidity, temperature and flow rate.
- Spin finish material is applied on the filaments after quenching process, and they are wrapped on the feed roll.
- the yarn coming from the nozzle is wrapped around the feed roller, polymer molecules are oriented in filament axis. Then its strength is increased by passing from the first drawing, second drawing and relaxing rollers. Orientation and crystallization of the molecules continues during drawing step.
- Two-stage drawing is applied in the present systems, and the hot drawing is performed in the second stage (>200 °C). Then, interlacing process is applied in order to hold the yarns together. After this process, relaxing process is applied on the yarn by decreasing the tension thereon. The yarn is wound on the reel in winder and thus the production is completed.
- the high and very high tenacity yarns present in the market are used as reinforcement material by the tire companies. The tire companies continue their study for the production of a lighter tire as supporting less fuel consumption. In case the tenacity of the nylon yarn is increased, the ply numbers of the nylon 66 reinforcement used in the tire can be decreased. Therefore the tire weight will decreased, and this provides fuel save since the rolling resistance will be decreased.
- Korean Patent document no KR930011332 an application known in the state of the art, discloses a process for preparing polyamide filament yarn having an excellent tenacity.
- the filament yarn made by the method has superior mechanical properties at high temperature, such as tensile strength, containing aromatic amide monomers, thus usable as a material for a tire-cord.
- the objective of the present invention is to provide a yarn production method which enables reducing the tire weight by decreasing ply numbers of the tire reinforcement material, and thus provides low rolling resistance, in the tire, low fuel consumption in the vehicle and low C0 2 emission.
- Another objective of the present invention is to provide a yarn production method providing a reinforcement material which causes lower heat formation with less reinforcement material layer in the tire, and thus causes higher fatigue resistance and increases the life of the tire.
- the inventive yarn production method comprises the steps of
- polymer chips are processed with inert gas for 11-15 hours at a temperature of 160-185 °C in order to increase their molecular weight.
- Formic acid relative viscosity of the chip obtained as a result of the solid stage polymerization is in the range of 98- 1 15.
- the temperatures and the speeds of the godets can be adjusted in the drawing unit, and the winding rate of the feeding roller is adjusted to the range of 400-700 m/min according to the desired crystallization temperature.
- hot steam annealing is applied on the yarn which is being drawn in pressure range of 3-5 bars and at a temperature of 350-460 °C since broken filament number, and ruptures increase during drawing process depending on high relative viscosity values.
- the inventive yarn production method relates to a super high strength yarn having at least 11.3 g/denier tenacity value and a production process developed for this.
- Nylon yarns are generally commercially available in high strength as standard.
- the tenacity value of the high strength nylon yarn is in the range of 10-10.5 g/denier.
- the tenacity value of the super high strength yarn disclosed in the scope of the invention is 11.3 g/denier and above.
- solid state polymerization stage melt fiber spinning process, quenching, double stage finish material application and yarn drawing stages are used in combination. Furthermore during this process, 2 stage yarn drawing, pre-interlacing, to obtain high drawing rate and fix the drawing point steam annealing, 2 stage relaxing and final interlacing steps are performed.
- Solid state polymerization is applied on polymer chip in order to increase the molecular weight of the polymer.
- Solid state polymerization is performed by contacting the polymer chips with inert gas at a certain temperature for a certain period. The water and other byproducts formed are removed with inert gas from the polymer structure. Inert gas is heated at the range of 160-185 °C in solid state polymerization. Each polymer chip should be subjected to this temperature for 1 1- 15 hrs in order to obtain the desired molecular weight.
- Formic acid relative viscosity of the chip obtained as a result of the solid stage polymerization is in the range of 98 to 1 15.
- extruder zone temperatures are increased in molten yarn production according to high formic acid relative viscosity.
- the molten polymer is pressed through the spinneret and becomes yarn, it is subjected to quenching process. Crystal value and orientation degree of the polymer is adjusted with the optimized air conditions.
- the filaments are combined with the ceramic guides, and the finish material comes to the applicator. Finish material is applied in order to optimize the friction between the contact surfaces of the yarns and the filaments, to provide antistatic feature and prevent the bacteria formation,
- the yarn is wrapped on the feed roller after applying finish material. Temperatures and the speeds of the godets can be adjusted in the drawing unit.
- the feed roller is adjusted to 400-700 m/min speed range according to the desired crystallization temperature.
- the multi stage drawing process starts wherein the micro structure (polymer orientation, crystallization) and mechanical properties of the yarn are formed.
- the yarn moves to the first godet set after this stage. Pre interlacing is applied between the feed roller and the first godet. After the first godet set, the yarns pass to the 2 nd godet set, and first drawing process is applied in there. Drawing in this stage is known as cold drawing since the first godet set is at a low temperature, and following this hot drawing process starts. Hot drawing is applied on the yarn between the 3 rd godet and 2 nd godet.
- Hot steam annealing is performed on the yarn between 2 nd and 3 rd godets since broken filament number and ruptures increase during drawing process depending on the high relative viscosity values.
- Steam is applied in order to increase the drawability of the yarn and fix the drawing point.
- the steam applied on the yarn enables to reach higher drawing rates in the yarn.
- the pressure of the steam which is applied is 3-5 bars and at a temperature range of 350-460°C.
- the yarn is relaxed in stages by decreasing the speed of the yarn in 4 th and 5 th godet sets.
- Draw and relaxg ratios are given for super high tenacity yarn in table 1.
- the yarn is transferred to the winder through the directing roller.
- Final interlacing process is performed between the last drawing roller and the winder.
- the suggested yarn winding speed in this stage is in the range of 2500 to 3500 m/min.
- the characteristics of the yarn which is developed are given in table 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Tires In General (AREA)
Abstract
The present invention relates to a yarn production method which is developed to produce super-tenacity polyamide 6.6 yarn for reinforcement fabric used in vehicle tire, and a super tenacity yarn acquired with this method. The objective of the present invention is to provide a production method for the super high tenacity yarn which enables reducing the tire weight by decreasing the ply number of reinforcement in the tire, and thus providing low rolling resistance in the tire, low fuel consumption in the vehicle and low C02 emission; and higher fatigue resistance and thus increases the life of the tire.
Description
DESCRIPTION
A YARN PRODUCTION METHOD AND A SUPER HIGHTENACITY YARN ACQUIRED WITH THIS METHOD
Field of the Invention
The present invention relates to a yarn production method which is developed to produce superhigh tenacity polyamide 6.6 yarn for reinforcement fabric used in vehicle tire, and a super high tenacity yarn acquired with this method.
Background of the Invention
Currently high tenacity (9.5g/denier) and very high tenacity yarns (10.7g/denier) are present in the Market. On the other hand, super hightenacity yarns (>11.3g/denier) cannot be commercially produced. (Tenacity is the strength value per denier provided by the yarn.) Formic acid relative viscosity of the solid-state polymerized chips in present nylon 66 yarn production processes is in the range of 60 to80 and the formic acid relative viscosity of the its undrawn yarn is in the range of 75 to98. In present yarn production process, after the polymer chips are extruded with the zone temperatures having the range of 280-290 °C, they are pumped to the spinnerets via the polymer pumps. While the polymer coming out of the nozzles is in form of filaments, it is cooled down to the polymer's glass transition temperature (Tg) by quenching with conditioned air and during the quenching filaments are crystallized. The air in the blowing system is applied on the yarn in a certain humidity, temperature and flow rate. Spin finish material is applied on the filaments after quenching process, and they are wrapped on the feed roll. While the yarn coming from the nozzle is wrapped around the feed roller, polymer molecules are oriented in filament axis. Then its strength is increased by passing from the first drawing, second drawing and relaxing rollers. Orientation and crystallization of the molecules continues during drawing step. Two-stage drawing is applied in the present systems, and the hot drawing is performed in the second stage (>200 °C). Then, interlacing process is applied in order to hold the
yarns together. After this process, relaxing process is applied on the yarn by decreasing the tension thereon. The yarn is wound on the reel in winder and thus the production is completed. The high and very high tenacity yarns present in the market are used as reinforcement material by the tire companies. The tire companies continue their study for the production of a lighter tire as supporting less fuel consumption. In case the tenacity of the nylon yarn is increased, the ply numbers of the nylon 66 reinforcement used in the tire can be decreased. Therefore the tire weight will decreased, and this provides fuel save since the rolling resistance will be decreased. In the present state, high numbers of layers are used since the strength of the nylon 66 reinforcement material is low. The strength of the yarn should be increased in order to decrease the number of layers. For the super high tenacity yarn which is targeted, 11.5 g/denier value has higher tenacity value than the nylon 6.6 yarns (9.5-10.7g/denier) present in the market.
Korean Patent document no KR930011332, an application known in the state of the art, discloses a process for preparing polyamide filament yarn having an excellent tenacity. The filament yarn, having tensile strength above 5.8 g/d, initial elasticity above 20 g/d at 90 deg.C is manufactured by: melt- spinning the polymer (where degree of polymerization (n)>=50), by copolymerizing 5-15 wt.% of aromatic amide with nylon 6; two-step drawing and heat-treating continuously in a conventional way. The filament yarn made by the method has superior mechanical properties at high temperature, such as tensile strength, containing aromatic amide monomers, thus usable as a material for a tire-cord.
Summary of the Invention
The objective of the present invention is to provide a yarn production method which enables reducing the tire weight by decreasing ply numbers of the tire reinforcement material, and thus provides low rolling resistance, in the tire, low fuel consumption in the vehicle and low C02 emission.
Another objective of the present invention is to provide a yarn production method providing a reinforcement material which causes lower heat formation with less reinforcement material layer in the tire, and thus causes higher fatigue resistance and increases the life of the tire.
Detailed Description of the Invention
The inventive yarn production method comprises the steps of
- applying solid state polymerization to polymer chip in order to increase molecular weight of the polymer to be used in yarn production,
- treating polymer chips with inert gas at a certain temperature for a certain period,
- removing the water and other byproducts formed with inert gas from the polymer chips,
- increasing the extruder zone temperatures in order to produce fibers having high formic acid relative viscosity
- forming fibers by drawing the melt polymer from spinnerets
- treating the drawn polymer with quenching process,
- adjusting the crystal value and orientation degree of the polymer by optimizing the quench air conditions,
- combining the yarns with ceramic guides,
- applying finish material to the combined yarns in order to optimize the friction between the contact surfaces of the yarns and the filaments, to provide antistatic feature and prevent the bacteria formation,
- wrapping the yarn on the feed roller after applying finish material,
- passing to the multi stage drawing process wherein the micro structure (polymer orientation, crystallization) and mechanical properties of the yarn are formed,
- directing the yarn to the first godet set,
- applying cold drawing which is the first stage of staged drawing process in the godet set,
- applying pre interlacing to the yarn between the feed roller and the first godet,
- directing the yarns after the first godet set to the 2nd and 3 rd godet sets,
- applying steam annealing to the yarn between the 2nd and 3 rd godet sets in order to increase the drawability of the yarn and fix the drawing point,
- applying hot drawing process which is the second stage of drawing process in 2nd and 3rd godet sets,
- directing the yarn to the 4th and 5th godet sets after drawing process,
- relaxing the yarn in stages by decreasing the tension on the yarn and the speed of the yarn in 4th and 5th godet sets,
- treating the yarns with the final interlacing,
- obtaining the super high tenacity yarn as the final product.
In the preferred embodiment of the invention, during solid stage polymerization stage, polymer chips are processed with inert gas for 11-15 hours at a temperature of 160-185 °C in order to increase their molecular weight. Formic acid relative viscosity of the chip obtained as a result of the solid stage polymerization is in the range of 98- 1 15.
In the preferred embodiment of the invention, the temperatures and the speeds of the godets can be adjusted in the drawing unit, and the winding rate of the feeding roller is adjusted to the range of 400-700 m/min according to the desired crystallization temperature.
In the preferred embodiment of the invention, hot steam annealing is applied on the yarn which is being drawn in pressure range of 3-5 bars and at a temperature of 350-460 °C since broken filament number, and ruptures increase during drawing process depending on high relative viscosity values.
The inventive yarn production method relates to a super high strength yarn having at least 11.3 g/denier tenacity value and a production process developed for this. Nylon yarns are generally commercially available in high strength as standard. The tenacity value of the high strength nylon yarn is in the range of 10-10.5 g/denier. The tenacity value of the super high strength yarn disclosed in the scope of the invention is 11.3 g/denier and above. 840 and 2500 denier and 3-6 denier/filament can be produced with the process developed in the scope of the invention. In the yarn production method developed within the scope of the invention, new solid state polymerization and extrusion, conditioned quenching, double stage finish material application and yarn drawing processes are used together. Mainly, the said steps, 2 stage yarn drawing, pre-interlacing, steam annealing, 2 stage relaxing and final interlacing steps are performed. By means of the inventive method comprising the said applications, the strength of the obtained final nylon yarn is at least 1 1.3 g/denier.
In order to provide the high relative viscosity aimed in the inventive method, being different from the present conditions, solid state polymerization stage, melt fiber spinning process, quenching, double stage finish material application and yarn drawing stages are used in combination. Furthermore during this process, 2 stage yarn drawing, pre-interlacing, to obtain high drawing rate and fix the drawing point steam annealing, 2 stage relaxing and final interlacing steps are performed.
Solid state polymerization is applied on polymer chip in order to increase the molecular weight of the polymer. Solid state polymerization is performed by contacting the polymer chips with inert gas at a certain temperature for a certain period. The water and other byproducts formed are removed with inert gas from the polymer structure. Inert gas is heated at the range of 160-185 °C in solid state polymerization. Each polymer chip should be subjected to this temperature for 1 1-
15 hrs in order to obtain the desired molecular weight. Formic acid relative viscosity of the chip obtained as a result of the solid stage polymerization is in the range of 98 to 1 15. In the inventive method, extruder zone temperatures are increased in molten yarn production according to high formic acid relative viscosity. After the molten polymer is pressed through the spinneret and becomes yarn, it is subjected to quenching process. Crystal value and orientation degree of the polymer is adjusted with the optimized air conditions. After this stage, the filaments are combined with the ceramic guides, and the finish material comes to the applicator. Finish material is applied in order to optimize the friction between the contact surfaces of the yarns and the filaments, to provide antistatic feature and prevent the bacteria formation, The yarn is wrapped on the feed roller after applying finish material. Temperatures and the speeds of the godets can be adjusted in the drawing unit. The feed roller is adjusted to 400-700 m/min speed range according to the desired crystallization temperature. Then the multi stage drawing process starts wherein the micro structure (polymer orientation, crystallization) and mechanical properties of the yarn are formed. The yarn moves to the first godet set after this stage. Pre interlacing is applied between the feed roller and the first godet. After the first godet set, the yarns pass to the 2nd godet set, and first drawing process is applied in there. Drawing in this stage is known as cold drawing since the first godet set is at a low temperature, and following this hot drawing process starts. Hot drawing is applied on the yarn between the 3rd godet and 2nd godet. Hot steam annealing is performed on the yarn between 2nd and 3 rd godets since broken filament number and ruptures increase during drawing process depending on the high relative viscosity values. Steam is applied in order to increase the drawability of the yarn and fix the drawing point. The steam applied on the yarn enables to reach higher drawing rates in the yarn. The pressure of the steam which is applied is 3-5 bars and at a temperature range of 350-460°C. After this stage, the tension on the yarn is decreased with the relaxing process. The yarn is relaxed in stages by decreasing the speed of the yarn in 4th and 5th godet sets.
Draw and relaxg ratios are given for super high tenacity yarn in table 1. After this stage, the yarn is transferred to the winder through the directing roller. Final interlacing process is performed between the last drawing roller and the winder. The suggested yarn winding speed in this stage is in the range of 2500 to 3500 m/min. The characteristics of the yarn which is developed are given in table 2.
Table-1 Drawing and relieving parameters
Table -2 Characteristics of the Super Strength Yarn
With this new developed super high tenacity yarn, The ply numbers of the reinforcement in tire can be decreased. Therefore, a lighter tire can be obtained relative to the one produced with the high tenacity yarn in the market currently. Lower tire weight provides lower rolling resistance, lower fuel consumption and thus lower C02 emission.
Lower heat formation is observed in the tire depending on the use of less reinforcement plieswithin the tire with the super high tenacity, and it provides better fatigue resistance. Therefore, the life of the tire increases.
Claims
1. A yarn production method characterized by the steps of -applying solid state polymerization to polymer chip in order to increase molecular weight of the polymer to be used in yarn production,
- treating polymer chips with inert gas at a certain temperature for a certain period,
- removing the water and other byproducts formed with inert gas from the polymer chips,
- increasing the extruder zone temperatures in order to produce fibers having high formic acid relative viscosity
- forming fiber by drawing melt polymer from the spinnerets,
- treating the drawn polymer with quenching process,
- adjusting the crystal value and orientation degree of the polymer by optimizing the quench air conditions,
- combining the yarns with ceramic guides,
- applying finish material to the combined yarns in order to optimize the friction between the contact surfaces of the yarns and the filaments, to provide antistatic feature and prevent the bacteria formation,
- wrapping the yarn on the feed roller after applying finish material,
- passing to the multi stage drawing process wherein the micro structure (polymer orientation, crystallization) and mechanical properties of the yarn are formed,
- directing the yarn to the first godet set,
- applying cold drawing which is the first stage of staged drawing process in the godet set,
- applying pre interlacing to the yarn between the feed roller and the first godet,
- directing the yarns after the first godet set to the 2nd and 3rd godet sets,
- applying steam annealing to the yarn between the 2n and 3r godet sets in order to increase the drawability of the yarn and fix the drawing point,
- applying hot drawing process which is the second stage of drawing process in 2nd and 3rd godet sets,
- directing the yarn to the 4th and 5th godet sets after drawing process,
- relaxing the yarn in stages by decreasing the tension on the yarn and the speed of the yarn in 4th and 5th godet sets,
- treating the yarns with the final interlacing,
- obtaining the super high tenacity yarn as the final product.
A production method according to claim 1, characterized in that the polymer chips are processed with inert gas at a temperature of 160-185 °C for 1 1-15 hours in order to increase their molecular weights at solid state polymerization..
A production method according to claim 1 or 2, characterized in that the formic acid relative viscosity of the chips obtained as a result of the solid state polymerization is increased to the range of 98-115.
A production method according to any one of the preceding claims, characterized in that the speed of the feed roller is adjusted to the range of 400-700 m/min according to the desired crystallization temperature.
A production method according to any one of the preceding claims, characterized in that hot steam annealing is performed on the yarn which is drawn in range of 3-5 bar pressure and at a temperature of 350-460°C in order that broken filament number and ruptures do not increase during drawing process depending on the high relative viscosity values.
6. A super high tenacity yarn which is formed with a method according to any one of the preceding claims and the tenacity value of which is above 1 1.3 g/denier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU92579A LU92579B1 (en) | 2013-02-20 | 2014-02-18 | Superhigh tenacity yarn and yarn production process acquired by this process |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR201302054 | 2013-02-20 | ||
| TR2013/02054 | 2013-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014129991A1 true WO2014129991A1 (en) | 2014-08-28 |
Family
ID=50721860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2014/000036 WO2014129991A1 (en) | 2013-02-20 | 2014-02-18 | A yarn production method and a super hightenacity yarn acquired with this method |
Country Status (2)
| Country | Link |
|---|---|
| LU (1) | LU92579B1 (en) |
| WO (1) | WO2014129991A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195812A (en) * | 2016-06-09 | 2019-01-11 | 大陆轮胎德国有限公司 | For the product made of elastomeric material, it is preferred for the enhancement layer and Pneumatic vehicle tire of Pneumatic vehicle tire |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1261579A (en) * | 1968-05-10 | 1972-01-26 | Du Pont | Filament |
| JPS6170008A (en) * | 1984-09-06 | 1986-04-10 | Toyobo Co Ltd | Polyamide fiber for rubber reinforcement |
| JPS62133109A (en) * | 1985-12-06 | 1987-06-16 | Toray Ind Inc | Polycarproamide yarn |
| US5073453A (en) * | 1989-12-18 | 1991-12-17 | Monsanto Company | High tenacity nylon yarn |
| JPH05156513A (en) * | 1991-12-04 | 1993-06-22 | Asahi Chem Ind Co Ltd | High-strength polyamide fiber and its production |
| KR930011332B1 (en) | 1991-12-09 | 1993-11-30 | 주식회사 코오롱 | Process for the preparation of polyamide filament yarn having excellent tenacity and modulus of elasticity |
| JP3379142B2 (en) * | 1993-05-19 | 2003-02-17 | 東レ株式会社 | Nylon 66 rubber reinforcement cord |
| WO2007038597A2 (en) * | 2005-09-28 | 2007-04-05 | North Carolina State University | High modulus polyamide fibers |
-
2014
- 2014-02-18 WO PCT/TR2014/000036 patent/WO2014129991A1/en active Application Filing
- 2014-02-18 LU LU92579A patent/LU92579B1/en active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1261579A (en) * | 1968-05-10 | 1972-01-26 | Du Pont | Filament |
| JPS6170008A (en) * | 1984-09-06 | 1986-04-10 | Toyobo Co Ltd | Polyamide fiber for rubber reinforcement |
| JPS62133109A (en) * | 1985-12-06 | 1987-06-16 | Toray Ind Inc | Polycarproamide yarn |
| US5073453A (en) * | 1989-12-18 | 1991-12-17 | Monsanto Company | High tenacity nylon yarn |
| JPH05156513A (en) * | 1991-12-04 | 1993-06-22 | Asahi Chem Ind Co Ltd | High-strength polyamide fiber and its production |
| KR930011332B1 (en) | 1991-12-09 | 1993-11-30 | 주식회사 코오롱 | Process for the preparation of polyamide filament yarn having excellent tenacity and modulus of elasticity |
| JP3379142B2 (en) * | 1993-05-19 | 2003-02-17 | 東レ株式会社 | Nylon 66 rubber reinforcement cord |
| WO2007038597A2 (en) * | 2005-09-28 | 2007-04-05 | North Carolina State University | High modulus polyamide fibers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195812A (en) * | 2016-06-09 | 2019-01-11 | 大陆轮胎德国有限公司 | For the product made of elastomeric material, it is preferred for the enhancement layer and Pneumatic vehicle tire of Pneumatic vehicle tire |
Also Published As
| Publication number | Publication date |
|---|---|
| LU92579B1 (en) | 2015-02-20 |
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