WO2002044447A1 - A sea-island typed composite fiber for warp knit treated raising, and a process of preparing for the same - Google Patents
A sea-island typed composite fiber for warp knit treated raising, and a process of preparing for the same Download PDFInfo
- Publication number
- WO2002044447A1 WO2002044447A1 PCT/KR2001/001978 KR0101978W WO0244447A1 WO 2002044447 A1 WO2002044447 A1 WO 2002044447A1 KR 0101978 W KR0101978 W KR 0101978W WO 0244447 A1 WO0244447 A1 WO 0244447A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sea
- island
- component
- composite fiber
- type composite
- Prior art date
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- 239000000835 fiber Substances 0.000 title claims abstract description 70
- 239000002131 composite material Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 47
- 230000008018 melting Effects 0.000 claims abstract description 47
- 230000007704 transition Effects 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 claims abstract description 21
- 229920000728 polyester Polymers 0.000 claims abstract description 21
- 239000003513 alkali Substances 0.000 claims abstract description 17
- 229920001577 copolymer Polymers 0.000 claims abstract description 12
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims description 34
- 239000000155 melt Substances 0.000 claims description 25
- 239000013078 crystal Substances 0.000 claims description 24
- 238000009987 spinning Methods 0.000 claims description 15
- 230000004927 fusion Effects 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 description 12
- 238000009940 knitting Methods 0.000 description 10
- 230000000704 physical effect Effects 0.000 description 9
- 238000007493 shaping process Methods 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000002950 deficient Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000007730 finishing process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000010036 direct spinning Methods 0.000 description 1
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- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 238000009941 weaving Methods 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
- 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
Definitions
- the present invention relates to a sea-island type composite fiber for a raised warp knit fabric which can improve the quality and physical properties of the raised warp knit fabric, i.e., an end product and process of preparing the same.
- a warp knitting process for preparing a warp knit fabric by using a sea-island type composite fiber a high quality of yarn, particularly, the smoothness of yarn is required because of a high knitting speed.
- the post finishing process for preparing a warp knit fabric requires a large number of complex steps such as weight loss, raising, dyeing and the like, it is necessary to control the thermal properties and viscoelastic properties of yarn appropriately.
- the thermal properties and viscoelastic properties specified according to the internal structure of each a sea component and an island component of a sea-island type composite fiber is very important in preparing a warp knit.
- the sea-island type composite fiber is prepared by using alkali soluble polymer as a sea component and fiber forming polymer as an island component and by conjugated-spinning them into a sea-island type, which is produced mainly for the purpose of preparing a fine denier fiber.
- the sea component of alkali soluble polymer is dissolved by treating the sea-island type composite fiber with an alkali solution, thus to prepare a fine denier fiber composed of only island components.
- the method for preparing the fine denier fiber from the sea- island type composite fiber is advantageous in that the finer denier fiber of an excellent workability of spinning and drawing can be obtained, as compared to the method for preparing the finer denier fiber by direct spinning, while it requires a process for dissolving and removing the sea component polymer with an organic solvent in the finishing process after weaving or knitting.
- the property of being soluble in an organic solvent or solution is very important for the sea component polymer.
- alkali soluble copolymer polyester is mainly used as the sea component polymer used for the sea-island type composite fiber used in warp knitting.
- the reason of which is because it is possible to dissolve the sea component from an alkali solution and weight loss facilities widely applied in the weight loss processing of general polyester fabric without using a special apparatus and the organic solvent requiring a high recovery cost.
- the island component polymer is nylon, the dissolution speed of the sea component is not so important because the extent that the nylon is penetrated by the alkali solution is very low in dissolving the sea component.
- the island component is polyester
- the island component is penetrated before the sea component is completely dissolved in a case that the dissolution speed of the sea component is low because the polyester is weak to alkali, for thereby abruptly degrading the physical properties of yarn after the dissolution.
- the content of a copolymer compound should be increased.
- the sea component becomes an amorphous polymer with no melting point but only softening point while the dissolution is improved, thus making spinning difficult.
- the prior art techniques for preparing alkali soluble polyester used in preparing the sea-island type composite fiber includes the following methods: 1 ) method for copolymerizing dimethy-5-sulfoisophthalate sodium salt (hereinafter,
- DMIS polyalkyleneglycol
- PAG polyalkyleneglycol
- an object of the present invention to provide a sea-island type composite fiber which is made suitable for yarn for a raised warp knit fabric by controlling the thermal properties and viscoelastic properties of the yarn appropriately.
- a sea-island type composite fiber for a raised warp knit fabric which is prepared by the direct spin draw method by using alkali soluble copolymer polyester as a sea component and polyester mainly consisting of polyethylene terephthalate of more than 90 mole% as an island component, wherein the composite fiber is characterized in that it satisfies the following thermal properties and viscoelastic properties:
- the sea-island type composite fiber of the present invention is prepared by using alkali soluble copolymer polyester as a sea component and polyester mainly consisting of polyethylene terephthalate of more than 90 mole% as an island component.
- the sea-island type composite fiber is prepared by spinning the sea component and the island component by an ordinary sea-island type conjugated spinning machine, and then drawing them between a first Godet roller 2 and a second Godet roller 3, and then winding up them.
- the raising property and sea-island shaping property are improved by properly adjusting the melt viscosity of the sea component and island component.
- a shear flow is occurred to fiber by a pressure applied to a spinneret from an extruder during a spinning process, and the flow rate and shear rate are low in the extruder while they are very high in the spinneret.
- melt viscosity(MV) Such a shear stress according to a shear rate is called the melt viscosity(MV), which is different according to polymer properties.
- sea-island component polymer having a proper melt viscosity
- the difference (hereinafter, " ⁇ MVg.ooo") between the melt viscosity of island component polymer and the melt viscosity of sea component polymer at a shear rate of 9,000(1/s) is 20-70% of the difference (hereinafter, " ⁇ MV500”) between the melt viscosity of island component and the melt viscosity of sea component at a shear rate of 500(1/s). That is, the value of ⁇ MV at the spinneret should be smaller than the value of ⁇ MV at the extruder.
- the difference ( ⁇ MV) in melt viscosity between the island polymer and the sea component polymer according to an increase of the shear rate should be reduced. Otherwise, the orientation property of the island component is decreased, the knitting property is degraded because a sufficient drawing is difficult, and raised fibers are entangled with one another in warp knit.
- Fig. 5 is a graph illustrating a change in ⁇ MV according to an increase of a shear rate. In Fig. 5, it is found that the difference in melt viscosity between the island component and the sea component is decreased gradually as the shear rate is increased.
- MVs melt viscosity of the sea component at a shear rate of 500-9, 000(1/s)
- MVi melt viscosity of the island component
- melt viscosity (MVs) of the sea component is larger than the melt viscosity(MVi) of the island component polymer, the cross section shaping of the sea-island type fiber might be difficult. This causes a decrease in number of island components or the wreck of uniform formation of island components, and thusly the raising property becomes poor in raising process and it is made difficult to express the appearance and touch of an end product.
- the difference in melt viscosity (hereinafter, " ⁇ MV") between the sea component and the island component is lower than 1 ,000 poises [ ⁇ MV ⁇ 1 ,000]. If the difference ( ⁇ MV) in melt viscosity between the sea and island components is more than 1 ,000 poise, the island components become adhesive to one another during spinning and there may be generated unseparated fibers in which the island components are not separated even after the dissolution. Due to this, there is a risk that the fiber raising state becomes non-uniform in warp knit raising, the appearance becomes unclean, the writing effect becomes weak and the touch becomes rough.
- the melt viscosity of the island component polymer can be adjusted by an intrinsic viscosity, and the melt viscosity of the sea component polymer can be adjusted by properly controlling the kinds of copolymer, constant weight of copolymer and copolymerization conditions.
- DIMS of 3-15 mole% is copolymerized into polyethylene terephthalate, to which polyethyleneglicol of 4-20 weight % having a number average molecular weight more than 8,000 can be added.
- the present invention is more advantageous to a high speed warp knitting because it can prepare a yarn having a flat property, as compared to the method of preparing a bulky sea-island type composite fiber by the spinning, drawing and false-twisting method.
- the appearance and touch of a raised warp knit fabric is improved by appropriately controlling the thermal properties and viscoelastic properties of the sea and island components of the yarn.
- the thermal properties and viscoelastic properties of the sea and island components of the yam on the first Godet roller(hereinagter "spin draft yarn") are controlled during the preparing process in order to adjust the thermal properties and viscoelastic properties of the sea and island components within a predetermined range.
- the thermal properties and viscoelastic properties of the spin draft yarn can be adjusted by appropriately combining a drawing teijiperature, a drawing ratio, a cooling condition and a melt viscosity of the sea component and island compoment.
- the number of presence of melting point peaks of the spin draft yarn(x) is adjusted to be less than 4, and a second transition peak temperature [T ⁇ ] on a graph of a viscoelastic index (tan ⁇ ) is adjusted to be - 60 - -30 °C. Moreover, a viscoelastic index value (tan ⁇ ⁇ ) of the second transition peak ( ⁇ -peak) is adjusted to be 0.04-0.10.
- a first transition peak should not be present on the graph of the viscoelastic index (tan ⁇ ) of the spin draft yarn(x), and the total heat of fusion ( ⁇ Hx) of crystal of the spin draft yarn (x) should satisfy the following formula with the total heat of fusion ( ⁇ Hy) of crystal of drawn and wound sea- island type composite fiber (hereinafter, "spin draw filament").
- a variety of physical properties of the yarn on the first Godet roller are physical property values measured by the method to be described later.
- the sampling method of the yarn on the first Godet roller are as below. Cutting the spinning yam at the front end portion of the first Godet roller by means of capturer, and almost simultaneously with cutting the spinning yarn at the rear end portion of the first Godet roller, and then sampling the filament wound up on the surface of the first Godet roller as soon as it is cut. More specifically, the yarn disposed on the surface of a filament layer wound up to the first Godet roller is sampled as soon as it is cut in order to prevent a change in the physical properties due to the temperature of the first Godet roller.
- the thusly prepared spin-draw filament (y) of the present invention has the thermal properties and viscoelastic properties as shown in Figs. 2 and 3.
- the number of presence of melting point peaks of the spin-draw yarn(y) is 4 including Ya, Yb, Yc and Yd of Fig. 3. That is, a main melting point peak (Ya) of the sea component, a sub melting point peak (Yb) of the sea component, a main melting point peak (Yc) of the island component, and a sub melting point peak (Yd) of the island component are formed.
- the main melting point peak temperature [Tmi] of the island component is 245-255 °C, and the sub melting point peak temperature [Tmi'] of the island component is 2-10°C higher than [Tmi].
- the main melting point peak temperature [Tms] of the sea component is 220-235 °C, and the sub melting point peak temperature [Tms'] of the sea component is 2-10 ° C higher than [Tms].
- the melting point of a crystal region refers to a maximum temperature of a combination of temperatures at which polymer crystal is melted.
- the melting point of the same polymer is dependant on a size of crystal and it becomes higher as the crystal becomes larger.
- the main peak of the melting point is a peak at a low temperature side and the sub peak of the melting point is a peak at a high temperature side.
- the reason why the melting point of one polymer is divided into two is because a distribution of crystal sizes of polymers are divided into two by an external influence. If the main melting point peak is present at a temperature higher than the sub melting point peak, this means that crystals of a larger size are more than crystals of a smaller size. While, if the main melting point peak is present at a temperature lower than the sub melting point peak, this means that crystals of a smaller size are more than crystals of a larger size.
- the total melting heat ( ⁇ Hi) of an island component crystal is 2-5 times larger than the total melting heat ( ⁇ Hs) of a sea component crystal.
- the total melting point ( ⁇ Hy) of the spin-draw yarn(y) crystal is 1.1-1.5 times larger than the total melting heat ( ⁇ Hx) of the spin draft yarn(x) crystal.
- the total melting heat( ⁇ Hy) of spin draw yarn(y) is equal to value ⁇ Hi+ ⁇ Hs.
- the melting heat of crystal refers to a quantity of heat per unit weight required for melting every small and large crystals in one polymer. The melting heat value of crystal becomes larger as the crystallinity becomes larger.
- a first transition peak temperature [T ⁇ ] on a graph of a viscoelastic index (tan ⁇ ) is 120-150 °C
- a second transition peak temperature [T ⁇ ] is - 50 - -20 ° C.
- the viscoelastic index [tan ⁇ ⁇ ] value of the first transition peak ( ⁇ -peak) is 0.10 - 0.20
- the viscoelastic index [tan ⁇ ⁇ ] of the second transition peak ( ⁇ -peak) is 0.03-0.08.
- the viscoelastic index [tan ⁇ ] represents a degree of energy loss by a frictional heat and braking generated by an internal molecular motion when an external force is given to polymer, which is a value obtained by dividing a viscous modulus by an elastic modulus.
- the first transition peak ( ⁇ -peak) represents a long distance chain movement of molecular in amorphous region related to glass transition.
- the second transition peak ( ⁇ -peak) seen at a lower temperature than the first transition peak ( ⁇ -peak) represents a crank shaft movement caused by a near chain movement of between amorphous region and crystal region.
- the sea-island type composite fiber of the present invention having the above-described thermal properties and viscoelastic properties, the appearance and touch of a raised warp knit fabric are improved because of an excellent raising property.
- the sea-island composite fiber of the present invention has a retention of yarn strength of more than 82% after dissolving the sea component.
- the melt viscosities of sea-island components harmonizes with one another.
- the formability of filament cross section shape, raising property and touch are excellent, and the degradation of the physical properties of the yarn is minimized in dissolving a sea component and raising process.
- the sea-island type composite fiber of the present invention is suitable particularly for the yarn used in preparing a raised warp knit fabric.
- a variety of physical properties of yarn and raised warp knit fabric are evaluated as follows.
- the melting point and melting heat of crystal are measured by a differential scanning calorimetry (DSC).
- DSC- 7 As a measurement apparatus, "DSC- 7" of PERKIN ELMER is used.
- a sample amount is sea-island type composite fiber of 5mg
- a sample state is set to a state where tens of strands of sea-island type composite fibers are cut in alignment
- a heating rate speed is +10°C/min
- running is a first run.
- the viscoelastic properties are measured by the Rheovibron testing method.
- "Rheovibron-ll" of ORIENTEC is used as a measurement apparatus.
- a sample gauge length is 3cm
- a temperature range is -120 -200 °C
- an amplitude is 16jum (L mode)
- a heating rate is +2°C/min.
- the melting temperature of polymer is 290 °C
- the shear rate is continuously changed in the ranges from 500(1 /s) to 9,000(1 Is)
- the drying condition of the island component polymer(chip) and sea component polymer(chip) is set to 150°C x 5 hours in the vacuum state.
- sea-island cross section shaping property 500 samples are prepared by sampling a composite fiber section, and the uniformity and seperation of a sectional form are observed and evaluated by a microscope. Specifically, if the sectional form is uniform and the number of unseparated island components is two or less, the shaping property is evaluated to be excellent, if the sectional form is not uniform and the number of unseparated island components is two or less, the shaping property is evaluated to be good, if the sectional form is uniform and the number of unseparated island components is 3-4, the shaping property is evaluated to be moderarate, and if the number unseperated of island components is five or more, the shaping property is evaluated to be poor. • raising property
- the raising property is measured by dyeing a raised warp knit fabric and then observing the number of occurrence of defective portions per square meter (e.g., raised fiber aggregation, raised fiber release and the like). Specifically, if the number of occurrence of defective portions per square meter is two or less, the raising property is evaluated to be excellent. If the number of occurrence of defective portions per square meter is 3, the raising property is evaluated to be good. If the number of occurrence of defective portions per square meter is 4-6, the raising property is evaluated to be moderate. If the number of occurrence of defective portions per square meter is seven or more, it is evaluated to be poor.
- the number of occurrence of defective portions per square meter e.g., raised fiber aggregation, raised fiber release and the like.
- the yam(composite fiber) strengths before and after the reduction of the sea component are obtained by Instron, and then the retention of yarn strength maintenance rate (%) after the dissolution of the sea component is obtained by substituting the yarn strengths before and after the dissolution of the sea component by the following formula.
- yarn strength mean tenacity(g/d) of yarn
- Fig. 1 is a schematic view of a process of the present invention
- Fig. 2 is a graph illustrating viscoelastic properties of the yarn according to the present invention
- Fig. 3 is a graph illustrating thermal properties (differential scanning thermal analysis) of a yarn according to the present invention
- Fig. 4 is a graph illustrating the correlation between the melt viscosity and shear rate for each component constituting a sea-island type composite fiber according to the present invention.
- Fig. 5 is a graph illustrating a change in the difference ( ⁇ MV) in melt viscosity between a sea component and an island component according to the present invention.
- Alkali soluble polymer is prepared by blending polyethyleneglycol of 8 weight% having a number average molecular weight of 8,500 with copolymer polyester in which dimethyl-5-isophthalate sodium of 4 mole% is copolymer.
- the prepared alkali soluble polymer is used as a sea component and polyethylene terephthalate having an intrinsic viscosity of 0.65 is used as an island component. They are spun by a conjugated spinning spinneret having
- the spun yarn is drawn between a the first Godet roller of 80 °C and the second Godet roller of 125°C at a draw ratio of 2.9 times. Then, it is wound up at a winding speed of 4,120m/min, thereby preparing a sea-island type composite fiber of 75denier / 24filament.
- the thermal properties and viscoelastic properties of a spin draft yarn passing through the first Godet roller during spinning are adjusted as in Table 1.
- a warp knit fabric is prepared by the sea-island type composite fiber of the present invention, and then the sea component is dissolved by processing the sea-island type composite fiber in a sodium hydroxide solution with a concentration of 1wt% at 95°C for 30 minutes, and then raised them, thereby preparing raised warp knit fabric.
- Table. 2 shows the result of evaluating thermal properties and viscoelastic properties of the sea-island type composite fiber and the raising property of the raised warp knit fabric by the above-described evaluation method.
- the sea-island type composite fiber of the present invention has proper thermal properties and viscoelastic properties, so it is easy to dissolve a sea component and the raising property is good. As a result, the sea-island type composite fiber is very useful as a yarn for a raised warp knit fabric having excellent appearance and touch.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Multicomponent Fibers (AREA)
- Knitting Of Fabric (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002223146A AU2002223146A1 (en) | 2000-11-21 | 2001-11-20 | A sea-island typed composite fiber for warp knit treated raising, and a process of preparing for the same |
BR0115678-0A BR0115678A (en) | 2000-11-21 | 2001-11-20 | Sea-island composite fiber for warp knit velvet, its preparation process and warp knit velvety fabric |
EP01998676A EP1373607A4 (en) | 2000-11-21 | 2001-11-20 | A sea-island typed composite fiber for warp knit treated raising, and a process of preparing for the same |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000069141A KR20010044138A (en) | 2000-11-21 | 2000-11-21 | A sea-island typed composite fiber for warp knit treated raising |
KR2000/69141 | 2000-11-21 | ||
KR1020000070780A KR20010044150A (en) | 2000-11-27 | 2000-11-27 | A sea-island typed composite fiber for warp knit, and a process of preparing for the same |
KR2000/70780 | 2000-11-27 | ||
KR2000/70774 | 2000-11-27 | ||
KR1020000070774A KR20010044145A (en) | 2000-11-27 | 2000-11-27 | A sea-island typed composite fiber for warp knit terated raising |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002044447A1 true WO2002044447A1 (en) | 2002-06-06 |
Family
ID=27350358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2001/001978 WO2002044447A1 (en) | 2000-11-21 | 2001-11-20 | A sea-island typed composite fiber for warp knit treated raising, and a process of preparing for the same |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1373607A4 (en) |
CN (1) | CN1277962C (en) |
AU (1) | AU2002223146A1 (en) |
BR (1) | BR0115678A (en) |
TW (2) | TW512189B (en) |
WO (1) | WO2002044447A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7910207B2 (en) | 2004-03-30 | 2011-03-22 | Teijin Fibers Limited | Islands-in-sea type composite fiber and process for producing same |
CN102936792A (en) * | 2012-09-26 | 2013-02-20 | 江苏波波熊纺织品有限公司 | Polyester spandex sea-island velvet fabric and manufacture method |
CN103374787A (en) * | 2013-07-26 | 2013-10-30 | 江苏旷达汽车织物集团股份有限公司 | Imitated suede warp knitted fabric and production process thereof |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1930487B1 (en) * | 2005-09-29 | 2018-04-18 | Teijin Frontier Co., Ltd. | Process for producing sea-island-type composite spun fiber |
CA2708403C (en) | 2007-12-14 | 2016-04-12 | Schlumberger Canada Limited | Proppants and uses thereof |
EA021092B1 (en) | 2007-12-14 | 2015-04-30 | Шлюмбергер Текнолоджи Б.В. | Method of treating subterranean wells using changeable additives |
US8353344B2 (en) | 2007-12-14 | 2013-01-15 | 3M Innovative Properties Company | Fiber aggregate |
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---|---|---|---|---|
JPS63303116A (en) * | 1987-05-29 | 1988-12-09 | Teijin Ltd | Heat-bondable conjugate fiber |
JPH0197212A (en) * | 1987-10-07 | 1989-04-14 | Toray Ind Inc | High-strength composite fiber |
JPH01246417A (en) * | 1988-03-22 | 1989-10-02 | Chisso Corp | Conjugated yarn and filter element using said yarn |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2954827B2 (en) * | 1994-04-28 | 1999-09-27 | 帝人株式会社 | Production method of ultrafine fiber |
JPH11256449A (en) * | 1998-03-10 | 1999-09-21 | Kuraray Co Ltd | Polyester-based woven or knitted fabric and its production |
-
2001
- 2001-11-20 CN CN 01812044 patent/CN1277962C/en not_active Expired - Fee Related
- 2001-11-20 EP EP01998676A patent/EP1373607A4/en not_active Withdrawn
- 2001-11-20 BR BR0115678-0A patent/BR0115678A/en not_active Application Discontinuation
- 2001-11-20 WO PCT/KR2001/001978 patent/WO2002044447A1/en not_active Application Discontinuation
- 2001-11-20 AU AU2002223146A patent/AU2002223146A1/en not_active Abandoned
- 2001-11-21 TW TW90128990A patent/TW512189B/en not_active IP Right Cessation
- 2001-11-21 TW TW90128989A patent/TW522181B/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS63303116A (en) * | 1987-05-29 | 1988-12-09 | Teijin Ltd | Heat-bondable conjugate fiber |
JPH0197212A (en) * | 1987-10-07 | 1989-04-14 | Toray Ind Inc | High-strength composite fiber |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7910207B2 (en) | 2004-03-30 | 2011-03-22 | Teijin Fibers Limited | Islands-in-sea type composite fiber and process for producing same |
CN102936792A (en) * | 2012-09-26 | 2013-02-20 | 江苏波波熊纺织品有限公司 | Polyester spandex sea-island velvet fabric and manufacture method |
CN103374787A (en) * | 2013-07-26 | 2013-10-30 | 江苏旷达汽车织物集团股份有限公司 | Imitated suede warp knitted fabric and production process thereof |
Also Published As
Publication number | Publication date |
---|---|
EP1373607A4 (en) | 2005-03-09 |
TW512189B (en) | 2002-12-01 |
AU2002223146A1 (en) | 2002-06-11 |
BR0115678A (en) | 2004-02-17 |
TW522181B (en) | 2003-03-01 |
CN1440468A (en) | 2003-09-03 |
CN1277962C (en) | 2006-10-04 |
EP1373607A1 (en) | 2004-01-02 |
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