WO2008082092A1 - Process for producing cellulose multi-filament with lower coefficient of variation of section diameter - Google Patents
Process for producing cellulose multi-filament with lower coefficient of variation of section diameter Download PDFInfo
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- WO2008082092A1 WO2008082092A1 PCT/KR2007/006410 KR2007006410W WO2008082092A1 WO 2008082092 A1 WO2008082092 A1 WO 2008082092A1 KR 2007006410 W KR2007006410 W KR 2007006410W WO 2008082092 A1 WO2008082092 A1 WO 2008082092A1
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- WIPO (PCT)
- Prior art keywords
- filament
- coefficient
- coagulation
- temperature
- variation
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 23
- 229920002678 cellulose Polymers 0.000 title description 5
- 239000001913 cellulose Substances 0.000 title description 5
- 230000015271 coagulation Effects 0.000 claims abstract description 52
- 238000005345 coagulation Methods 0.000 claims abstract description 52
- 229920000433 Lyocell Polymers 0.000 claims abstract description 45
- 238000009987 spinning Methods 0.000 claims abstract description 38
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 230000001112 coagulating effect Effects 0.000 claims abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920000875 Dissolving pulp Polymers 0.000 claims abstract 2
- 230000008961 swelling Effects 0.000 claims abstract 2
- 230000000704 physical effect Effects 0.000 claims description 10
- 229920003043 Cellulose fiber Polymers 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000009661 fatigue test Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- ZTHYODDOHIVTJV-UHFFFAOYSA-N Propyl gallate Chemical compound CCCOC(=O)C1=CC(O)=C(O)C(O)=C1 ZTHYODDOHIVTJV-UHFFFAOYSA-N 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 238000007620 mathematical function Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229940075579 propyl gallate Drugs 0.000 description 1
- 235000010388 propyl gallate Nutrition 0.000 description 1
- 239000000473 propyl gallate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
Classifications
-
- 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
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
-
- 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
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/02—Reinforcing materials; Prepregs
- D10B2505/022—Reinforcing materials; Prepregs for tyres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
Definitions
- the lyocell fiber according to the present invention may have suitable properties for using as a dip cord for tire cord.
- the Coefficient of Variation of section diameter (CV(%)) may be controlled in the desired range by adjusting coagulation coefficient.
- the present invention has an advantage of producing a lyocell multi-filament for using as a dip cord for tire-cord. Best Mode for Carrying Out the Invention
- a lyocell multi-filament was prepared by the same process as example 1, only except for changing the temperature of the cooling air in the air gap to 10 °C(for example 2) and 15 °C(for example 3), and the temperature of the coagulation bath to 20 °C(for example 2) and 25 0 C (for example 3) in order that the coagulation coefficient is 1. Physical properties of the obtained filament are described in Table 1.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
- Tires In General (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The present invention relates to a cellulose fiber having a highly homogeneous section, particularly to a cellulose fiber with lower Coefficient of Variation of section diameter (CV(%)). Specifically, the present invention relates to a cellulose fiber wherein Coefficient of Variation of section diameter (CV(%)) of a mono-filament constituting a multi-filament prepared by dissolving a cellulose powder in liquid N-methylmorpholine N-oxide(hereinafter referred to 'NMMO') is below 2.5. According to the present invention, a lyocell multi-filament is produced comprising the steps of (i)preparing a spinning solution by homogeneously dispersing, swelling and dissolving cellulose powder in a NMMO solution; (ii)spinning the spinning solution into an air gap through a spinning nozzle; and (iii)coagulating the extruded-spun spinning solution in a coagulation bath. In particular, the coagulating step is adjusted by means of a coagulation coefficient in the range of 0.8 to 1.3 and the coagulation coefficient is expressed as T D/TC, TD= TD + TA 90 and TD TAandTc mean the temperature of a spinning solution, the temperature of cooling air applied in an air gap and the temperature of a coagulation bath, respectively.
Description
Description
PROCESS FOR PRODUCING CELLULOSE MULTI-FILAMENT WITH LOWER COEFFICIENT OF VARIATION OF SECTION
DIAMETER
Technical Field
[1] The present invention relates to a cellulose fiber having a highly homogeneous section, particularly to a cellulose fiber with lower Coefficient of Variation of section diameter (CV(%)). Specifically, the present invention relates to a cellulose fiber wherein Coefficient of Variation of section diameter (CV(%)) of a mono-filament constituting a multi-filament prepared by dissolving a cellulose powder in liquid N- methylmorpholine N-oxide(hereinafter referred to "NMMO") is below 2.5. Background Art
[2] A lyocell fiber is made from a spinning solution wherein cellulose is dissolved in
NMMO and it has an advantage of having high hygroscopicity, dry and wet strength and modulus. Moreover, unlike viscose rayon, lyocell is recognized as an environmentally-friendly fiber which does not pollute the environment with harmful substances. Such a lyocell fiber, as an alternative of rayon, may be used as a tire-cord and for this purpose, the homogeneity of a section diameter of a mono-filament constituting a multi-filament is necessary to accomplish high strength as a tire-cord material. The homogeneity may be expressed as Coefficient of Variation of section diameter (CV(%)).
[3] International Publication No. WO 2001/86043 discloses lyocell fibers having 65% or more in Coefficient of Variation of section diameter (CV(%)). The invention disclosed in WO 2001/8604-3, however, has an object of increasing Coefficient of Variation of section diameter (CV(%)) and it is not suitable for using as industrial materials, particularly, for tire-cord because it has 0.7 to 5.0 g/d in strength as shown in examples.
[4] Referring to other prior invention, US Patent No. 6,773,648 discloses a lyocell fiber having 6 to 17 % in Coefficient of Variation of section diameter (CV(%)) along fiber and 10 to 22 % in Coefficient of Variation of section diameter (CV(%)) between fibers. Those of Coefficient of Variation of section diameter along fiber and between fibers as well, however, are not suitable for using as a lyocell fiber for tire -cord. Disclosure of Invention
Technical Problem
[5] The present invention suggests a method for improving Coefficient of Variation of section diameter by adjusting the temperatures of an air gap and a coagulation bath during the process in order that Coefficient of Variation of section diameter (CV(%)) of a mono-filament constituting a multi-filament is lowered below 2.5. Technical Solution
[6] It is an object of the present invention to provide a lyocell fiber for using as a high- strength dip cord for tire -cord by adjusting the temperatures of cooling air in the air gap and the coagulation bath and adjusting Coefficient of Variation of section diameter (CV(%)) of mono-filament constituting a multi-filament to below 2.5.
Advantageous Effects
[7] The lyocell fiber according to the present invention may have suitable properties for using as a dip cord for tire cord. According to the present invention, the Coefficient of Variation of section diameter (CV(%)) may be controlled in the desired range by adjusting coagulation coefficient. Hence, the present invention has an advantage of producing a lyocell multi-filament for using as a dip cord for tire-cord. Best Mode for Carrying Out the Invention
[8] Though processes for producing a lyocell fiber have been disclosed in many prior arts, a lyocell fiber having different properties according to each condition of process may be produced. Particularly, the spinning pressure in a spinning nozzle, the diameter and the number of orifice, the spinning speed, the temperature and the air velocity of cooling air in an air gap, and the temperature, the concentration of a coagulation bath are the main factors which determine the properties of a lyocell fiber. The lyocell fiber produced according to the present invention is prepared by controlling conditions of process and thereby having suitable properties for tire -cord.
[9] The properties of the lyocell fiber produced according to the preset invention are influenced not by the above-described factors or others independently, but by the correlation between the factors. The present invention is characterized in that such factors are controlled to have the correlation.
[10] The factors which determine the homogeneity of the produced lyocell fiber may be divided into a cooling condition in an air gap and a coagulating condition. Therefore, the condition factors may be expressed as a coagulation coefficient as a result of a mathematical function of the temperature of the cooling air in the air gap and the temperature of the coagulation bath, as shown below.
[H]
[12] Coagulation Coefficient = T D/Tc= 0.8 to 1.3
[13] (TD.= TD+ TA- 90)
[14]
[15] TDmeans the temperature of a spinning solution, TAmeans the temperature of cooling air applied in an air gap and Tc means the temperature of a coagulation bath.
[16] In the process of producing a lyocell fiber according to the present invention, the coagulation coefficient is adjusted to 0.8 to 1.3. Through the adjustment of the coagulation coefficient, the spinning solution is cooled and the temperature of the spinning solution and the temperature of the coagulation bath are adjusted within a similar temperature range, and then the NMMO contained in the spinning solution is fed into the coagulation bath and spreads slowly therein. In doing so, the homogeneity of a mono-filament may be improved by the lower spreading rate. In order to lower the spreading rate, coagulation coefficient is adjusted in the range of OE to 1.3. Hereinafter, the process for producing a lyocell fiber with lower Coefficient of Variation of section diameter (CV(%)) will be described in detail.
[17] As a raw material of producing a lyocell fiber, a softwood pulp having 800 to 1200 in degree of polymerization and 93% or more in the contents of α-cellulose is pulverized with a crusher into powder with 500 μm in average diameter. An NMMO solution having 10 to 20 wt% in the contents of water is prepared. The pulp powder and the NMMO solution are fed into an extruder at the same time. And then the cellulose powder is evenly dispersed, swollen and dissolved in the NMMO solution within the extruder maintained at the temperature of 90 to 110 0C, and then transferred to the spinning nozzle through the spinning line at the temperature of 90 to 110 0C and thereby the spinning solution is prepared. The spinning solution is spun through the spinning nozzle into a filament yarn.
[18] In the process of producing a lyocell fiber according to the present invention, the diameter of the spinning nozzle may be 80 to 130 mm. After the diameter of the spinning nozzle is determined, the number of orifice and the ratio of the length to the diameter (L/D ratio) of orifice may be determined. The number of orifice may be 800 to 1200, the diameter of the orifice may be 800 to 2000 μm, and the L/D ratio of the orifice may be 2 to 5. The spinning solution is extruded-spun into an air gap. The spinning solution is cooled and solidified in order to draw the spinning solution in the air gap, wherein the air is blown at lower temperature in the range of 0 to 25 0C.
[19] The solution after being cooled and solidified in the air gap is coagulated into a
filament yarn in a coagulating solution at a certain concentration and temperature. The lyocell fiber according to the present invention is controlled to have a pre-deternined coagulation coefficient in the process of coagulating and thereby the lyocell fiber may have desired properties.
[20] The condition factors may be expressed as a coagulation coefficient as a result of a mathematical function of the temperature of cooling air and the temperature of a coagulation bath, as shown below.
[21]
[22] Coagulation Coefficient = T D/Tc, TD= TD+ TA- 90
[23]
[24] TDmeans the temperature of a spinning solution, TAmeans the temperature of cooling air applied in an air gap and Tc means the temperature of a coagulation bath. In the process of producing a lyocell fiber according to the present invention, the coagulation coefficient may be 0.8 to 1.3.
[25] In order to adjust the coagulation coefficient, the concentration of the coagulation bath is adjusted in order that the concentration of NMMO is adjusted in the range of 5 to 20 wt%. In the range of 0.8 to 1.3 of coagulation coefficient, the temperature of the spinning solution and that of the coagulation bath become almost similar and the spreading rate of the NMMO contained in the spinning solution into the coagulation bath goes down as low as it can be. As a result, the homogeneous coagulation may be accomplished. Therefore, the section of a mono-filament constituting the multifilament becomes very homogeneous and high strength is accomplished.
[26] From the lyocell fiber produced according to the above-mentioned process, a greige cord is prepared and then a dip cord is prepared. The greige cord is prepared by twisting a certain number of ply twist yarn and cable twist yarn to two ply of lyocell fibers. Preferably, the twisting may be carried out at 300/300 TPM to 500/500 TPM for cable twist/ply twist and the number of ply twist yarn and cable twist yarn is not necessarily the same. The greige cord by twisting ply twist yarn and cable twist yarn is then dipped to a dipping solution. A dip cord for tire is prepared after a resin layer is attached to the greige cord.
[27] The lyocell fiber for tire-cord according to the present invention has 800 to 3300 in denier of the entire fineness and 0.5 to 2.0 in denier of each monofilament fineness. The lyocell fiber produced by adjusting 0.8 to 1.3 in coagulation coefficient according to the present invention is characterized with following physical properties:
[28] (1) 64 to 8.3 g/d in tenacity of the multi-filament,
[29] (2) 5.7 to 7.1 % in breaking elongation, and
[30] (3) less than 2.5 % in Coefficient of Variation of section diameter (CV(%))
[31] The dip oord prepared according to the present invention is characterized with following physical properties:
[32] ( 1 ) 4 to 6 g/d in tenacity,
[33] (2) 5 to 10 % in breaking elongation, and
[34] (3) 70 to 100 % in fatigue resistance
Mode for the Invention
[35] Hereinafter, the present invention will be described in detail with examples and comparative examples. These examples are provided only for the illustrative purpose, and it should not be construed that the scope of the invention is limited thereto.
[36] According to the examples and comparative examples, the physical properties of the lyocell multi-filament are evaluated as following.
[37]
[38] Tenacity (g/d) andBreakingElongationCfø)
[39] The above-mentioned values were measured immediately after dried with a heat dryer for 2 hours at temperature of 107 0C. The measurement was performed with a low-speed elongating tensile strength tester from Instrong LTD., USA and the conditions of measurement are as following:
[40] 80 Tpm (80 turns twist/m); 250 mm in length of sample; 300 m/nin at speed.
[41]
[42] Coefficient ofVariationofsectiondiameter (CV(%))
[43] The above-mentioned value is calculated after each size of multi-filament and monofilament is obtained by using a microscope. Coefficient of Variation of section diameter (CV(%)) is to determine the degree of relative dispersion and is calculated by dividing the standard deviation with the average value.
[44] The physical properties of various lyocell fibers produced according to coagulation coefficient are shown in Table 1.
[45]
[46] FatigueResistance (%)
[47] Samples were subjected a fatigue test using a Goodrich disc fatigue tester which is conventionally used for the fatigue test of tire cords. Then, they were measured for residual strength, and fatigue resistances were compared. The fatigue test was conducted under the following conditions: 120 0C, 2500 rpm, and 10 % and 18 % compression. After the fatigue test, the samples were dipped in tetrachloroethylene solution
for 24 hours to swell rubber, and then, a cord was separated from the rubber and measured for residual strength. This residual strength was measured using a conventional tensile strength tester by the above-described measurement method (a), after drying at 107 0C for 2 hours.
[48]
[49] EXAMPLES
[50] [Example 1]
[51] A cellulose solution with 11.5 wt% in concentration was prepared by using a mixture of pulp powder with 1200 in degree of polymerization (containing 97% in contents of α-cellulose), NMMO- IH2O and 0.01 wt% propyl gallate. A spinning nozzle that is 100 mm in diameter and has 1000 orifices with 150 μm in diameter was used to extrude the cellulose solution. In this case, the ratio of length to diameter (L/D) of each orifice was 4 in the spinning nozzle. The solution extruded from the spinning nozzle(head temperature at 100 0C) was exposed to a cooling air at 5 0C and 5 m/sec with 50 mm air gap and then the solution is spun wherein the amount of the extruded solution and the spinning speed were adjusted in order that the final filament fineness is 1000 denier. In this case, the temperature of coagulating solution was 15 0C in order that the coagulation coefficient is 1. The concentration of a coagulation bath was adjusted to 80% in water and 20% in NMMO, and then water- washed, dried and wound in order to obtain a filament yarn. Physical properties of the obtained filament are described in Table 1.
[52] [Example 2 and 3]
[53] A lyocell multi-filament was prepared by the same process as example 1, only except for changing the temperature of the cooling air in the air gap to 10 °C(for example 2) and 15 °C(for example 3), and the temperature of the coagulation bath to 20 °C(for example 2) and 25 0C (for example 3) in order that the coagulation coefficient is 1. Physical properties of the obtained filament are described in Table 1.
[54] [Example 4 to 6]
[55] A lyocell multi-filament was prepared by the same process as example 1, only except for changing the amount of the extruded solution and the spinning speed in order that the final filament fineness is 1500 denier. In this case, the temperature of the coagulating solution is adjusted in order that the coagulation coefficient is 1. Physical properties of the obtained filament are described in Table 1.
[56] Table 1
[Table 1] [Table ]
[57] [58] COMPERATIVE EXAMPELS [59] [Comparative example 1 and 2] [60] A lyocell multi-filament was prepared by the same process as example 1, only except for changing the temperature of the coagulation bath to 20 °C(for comp. ex. 1) and 15 0C (for comp. ex. 2) in order that the coagulation coefficient is 0.75(for comp. ex. 1) and 1.33(for comp. ex. 2). Physical properties of the obtained filament are described in Table 2.
[61] [Comparative example 3 and 4] [62] A lyocell multi-filament was prepared by the same process as example 3 and 4, only except for changing the temperature of the coagulation bath to 10 °C(for comp. ex. 3) and 15 0C (for comp. ex. 4) in order that the coagulation coefficient is 2.5(for comp. ex. 3) and 2.0(for comp. ex. 4). Physical properties of the obtained filament are described in Table 2.
[63] Table 2
[Table 2] [Table ]
[64] [65] Referring to Table 1, if the coagulation coefficient is adjusted to 1, the Coefficient of Variation of section diameter (CV(%)) decreases. Meanwhile, the coagulation coefficient is more or less than 1, the Coefficient of Variation of section diameter (CV(%)) is 2.7 and 2.9 in each comparative example, meaning that non-homogeneity of the size of mono-filament is increased as shown in Table 2. At the same time, the tenacity of multi-filament is reduced and the Coefficient of Variation of section diameter (CV(%)) is also increased, meaning that the homogeneity of the monofilament is reduced. Examples 1 to 6 show the result of the Coefficient of Variation of section diameter (CV(%)) of lyocell multi-filament obtained by adjusting coagulation coefficient to 1. In reality, if the coagulation coefficient is adjusted to 0.8 to 1, a lyocell multi-filament with 2.5 or less in Coefficient of Variation of section diameter may be prepared. Industrial Applicability
[66] The lyocell fiber according to the present invention may have suitable properties for using as a dip cord for tire cord. The Coefficient of Variation of section diameter (CV(%)) of the lyocell fiber is an important factor to determine the fatigue resistance of tire-cord. According to the present invention, the Coefficient of Variation of section diameter (CV(%)) may be controlled in the desired range by adjusting coagulation coefficient. Hence, the present invention has an advantage of producing a lyocell
multi-filament for using as a dip cord for tire-cord.
Claims
[1] A process for producing a lyocell multi-filament in which the process includes preparing a spinning solution by homogenously dispersing, swelling and dissolving cellulose powder in a NMMO solution; spinning the spinning solution into an air gap through a spinning nozzle; and coagulating the extruded-spun spinning solution in a coagulation bath, characterized in that the coagulating is adjusted by means of a coagulation coefficient in the range of 0.8 to 1.3 and the coagulation coefficient is expressed as shown below, coagulation coefficient = T D/Tc, TD= TD+ TA- 90; and TD TA andTc meanthe temperature of a spinning solution, the temperature of cooling air applied in an air gap and the temperature of a coagulation bath, respectively.
[2] The process of producing a lyocell multi-filament according to claim 1, wherein the coagulation coefficient is 1.
[3] The process of producing a lyocell multi-filament according to claim 1, wherein the temperature of the coagulation bath to 15 to 25 0C.
[4] The process of producing a lyocell multi-filament according to claim 1, wherein the fineness of lyocell multi-filament is 800 to 3300 denier.
[5] The process of producing a lyocell multi-filament according to claim 1, wherein
TD>TAiTD.and Tcare 100 to 110 0C, 5 to 15 0C, 15 to 35 0C and 15 to 35 0C, respectively.
[6] A lyocell multi-filament for use of tire dip cord produced according to claim 1 and with following physical properties: 800 to 3300 denier in entire fineness; 0.5 to 2.0 denier in each monofilament fineness; (ύ to 8.3 g/d in tenacity of the multi-filament, 5.7 to 7.1 % in breaking elongation, and less than 2.5 % in Coefficient of Variation of section diameter (CV(%))
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200780048455.9A CN101578401B (en) | 2006-12-28 | 2007-12-10 | Process for producing cellulose multi-filament with lower coefficient of variation of section diameter |
| JP2009542633A JP4593676B2 (en) | 2006-12-28 | 2007-12-10 | Method for producing cellulose multifilament having a low cross-sectional variation coefficient |
| EP07851381A EP2097562B1 (en) | 2006-12-28 | 2007-12-10 | Process for producing cellulose multi-filament with lower coefficient of variation of section diameter |
| US12/521,362 US20110003148A1 (en) | 2006-12-28 | 2007-12-10 | Process for producing cellulose multi-filament with lower coefficient of variation of section diameter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060136132A KR100824980B1 (en) | 2006-12-28 | 2006-12-28 | Cellulose multi-filament with lower coefficient of variation of section diameter |
| KR10-2006-0136132 | 2006-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008082092A1 true WO2008082092A1 (en) | 2008-07-10 |
Family
ID=39572509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2007/006410 WO2008082092A1 (en) | 2006-12-28 | 2007-12-10 | Process for producing cellulose multi-filament with lower coefficient of variation of section diameter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20110003148A1 (en) |
| EP (1) | EP2097562B1 (en) |
| JP (1) | JP4593676B2 (en) |
| KR (1) | KR100824980B1 (en) |
| CN (1) | CN101578401B (en) |
| WO (1) | WO2008082092A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10889917B2 (en) | 2011-10-05 | 2021-01-12 | Teijin Aramid B.V. | Process for spinning multifilament yarn |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2565303A1 (en) * | 2011-09-02 | 2013-03-06 | Aurotec GmbH | Extrusion method |
| EP2759624A1 (en) * | 2013-01-29 | 2014-07-30 | Continental Reifen Deutschland GmbH | Reinforcing ply for objects made of elastomer material, preferably for pneumatic vehicle tires and pneumatic vehicle tires |
| WO2014118082A1 (en) * | 2013-01-29 | 2014-08-07 | Continental Reifen Deutschland Gmbh | Reinforcement layer for articles made of an elastomeric material, preferably for pneumatic vehicle tires and pneumatic vehicle tires |
| EP2781367B1 (en) * | 2013-03-18 | 2016-12-14 | Continental Reifen Deutschland GmbH | Reinforcing ply for objects made of elastomer material, preferably for pneumatic vehicle tires and pneumatic vehicle tire |
| KR102157887B1 (en) * | 2014-09-30 | 2020-09-18 | 코오롱인더스트리 주식회사 | Crimped Lyocell Fiber |
| WO2018015261A1 (en) * | 2016-07-20 | 2018-01-25 | Cordenka Gmbh & Co. Kg | Use of textile reinforcing supports |
| CN106222771B (en) * | 2016-07-22 | 2019-02-22 | 中国纺织科学研究院有限公司 | A kind of preparation method of cellulose fibre |
| US20210388533A1 (en) * | 2018-10-05 | 2021-12-16 | North Carolina State University | Cellulosic fiber processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001086043A1 (en) | 2000-05-11 | 2001-11-15 | Weyerhaeuser Company | Lyocell fibers |
| KR20050003128A (en) * | 2003-06-30 | 2005-01-10 | 주식회사 효성 | A solution containing cellulose dissolved in N-methylmorpholine-N-oxide and high tenacity lyocell multifilament using the same |
| KR20050003126A (en) * | 2003-06-30 | 2005-01-10 | 주식회사 효성 | Lyocell multi-filament for tire cord and process for preparing the same |
| KR20050003127A (en) * | 2003-06-30 | 2005-01-10 | 주식회사 효성 | A solution containing cellulose dissolved in N-methylmorpholine-N-oxide and process for preparing the same |
| KR20050030770A (en) * | 2003-09-26 | 2005-03-31 | 주식회사 효성 | Quenching apparatus for preparing lyocell multi-filament |
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| GB9500387D0 (en) * | 1995-01-10 | 1995-03-01 | Courtaulds Fibres Ltd | Manufacture of extruded articles |
| JP3852631B2 (en) * | 1997-05-29 | 2006-12-06 | 東洋紡績株式会社 | Regenerated cellulose fiber and method for producing the same |
| GB2319495A (en) * | 1996-11-26 | 1998-05-27 | Courtaulds Fibres | Method and apparatus for the manufacture of lyocell fibres |
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| JP3937216B2 (en) * | 2002-03-18 | 2007-06-27 | 東洋紡績株式会社 | Method for producing cellulose molded body |
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| AU2003273105A1 (en) * | 2003-06-30 | 2005-01-13 | Hyosung Corporation | A jomogeneous cellulose solution and high tenacity lyocell multifilament using the same |
| JP4234057B2 (en) * | 2003-06-30 | 2009-03-04 | ヒョスング コーポレーション | Cellulose dipcords and tires made from highly homogeneous cellulose solutions |
| KR100595751B1 (en) * | 2004-11-11 | 2006-07-03 | 주식회사 효성 | The Process for preparing a cellulose fiber |
| KR100575388B1 (en) * | 2004-12-30 | 2006-05-03 | 주식회사 효성 | A highly homogeneous cellulose solution and fiber produced by using the same |
| KR100966111B1 (en) * | 2005-03-15 | 2010-06-28 | 주식회사 효성 | The Process for preparing a cellulose fiber |
| KR100630267B1 (en) * | 2005-03-18 | 2006-09-29 | 주식회사 효성 | Dipped cord using hybrid cord and radial tire using the same |
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2006
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2007
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- 2007-12-10 CN CN200780048455.9A patent/CN101578401B/en not_active Expired - Fee Related
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| WO2001086043A1 (en) | 2000-05-11 | 2001-11-15 | Weyerhaeuser Company | Lyocell fibers |
| KR20050003128A (en) * | 2003-06-30 | 2005-01-10 | 주식회사 효성 | A solution containing cellulose dissolved in N-methylmorpholine-N-oxide and high tenacity lyocell multifilament using the same |
| KR20050003126A (en) * | 2003-06-30 | 2005-01-10 | 주식회사 효성 | Lyocell multi-filament for tire cord and process for preparing the same |
| KR20050003127A (en) * | 2003-06-30 | 2005-01-10 | 주식회사 효성 | A solution containing cellulose dissolved in N-methylmorpholine-N-oxide and process for preparing the same |
| KR20050030770A (en) * | 2003-09-26 | 2005-03-31 | 주식회사 효성 | Quenching apparatus for preparing lyocell multi-filament |
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| US10889917B2 (en) | 2011-10-05 | 2021-01-12 | Teijin Aramid B.V. | Process for spinning multifilament yarn |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4593676B2 (en) | 2010-12-08 |
| CN101578401B (en) | 2012-02-01 |
| KR100824980B1 (en) | 2008-04-28 |
| EP2097562A4 (en) | 2010-08-25 |
| CN101578401A (en) | 2009-11-11 |
| US20110003148A1 (en) | 2011-01-06 |
| EP2097562A1 (en) | 2009-09-09 |
| JP2010513739A (en) | 2010-04-30 |
| EP2097562B1 (en) | 2012-11-28 |
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