CN114008255A - Polyester composite fiber with good elasticity and preparation method thereof - Google Patents
Polyester composite fiber with good elasticity and preparation method thereof Download PDFInfo
- Publication number
- CN114008255A CN114008255A CN202080045760.8A CN202080045760A CN114008255A CN 114008255 A CN114008255 A CN 114008255A CN 202080045760 A CN202080045760 A CN 202080045760A CN 114008255 A CN114008255 A CN 114008255A
- Authority
- CN
- China
- Prior art keywords
- composite fiber
- component
- fiber
- polyester composite
- polyester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 183
- 229920000728 polyester Polymers 0.000 title claims abstract description 96
- 239000002131 composite material Substances 0.000 title claims description 151
- 238000002360 preparation method Methods 0.000 title description 16
- 238000009987 spinning Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000002844 melting Methods 0.000 claims description 42
- 230000008018 melting Effects 0.000 claims description 42
- 239000006224 matting agent Substances 0.000 claims description 26
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 19
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 18
- -1 polybutylene terephthalate Polymers 0.000 claims description 16
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 13
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 13
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 description 15
- 229920002334 Spandex Polymers 0.000 description 13
- 239000004759 spandex Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 238000009940 knitting Methods 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002074 melt spinning Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000379 polymerizing effect Effects 0.000 description 3
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000009998 heat setting Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- JIABEENURMZTTI-UHFFFAOYSA-N 1-isocyanato-2-[(2-isocyanatophenyl)methyl]benzene Chemical compound O=C=NC1=CC=CC=C1CC1=CC=CC=C1N=C=O JIABEENURMZTTI-UHFFFAOYSA-N 0.000 description 1
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 241001553178 Arachis glabrata Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012681 fiber drawing Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
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
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- 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
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- 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
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
Abstract
The present invention relates to a polyester conjugate fiber having excellent stretchability and a method for preparing the same, and more particularly, to a polyester conjugate fiber which is prepared by conjugate spinning of a first component and a second component, has an intrinsic viscosity of 0.60 to 0.80dl/g and a leisenna shrinkage (percentage) of 15 to 30%, and has improved stretchability, does not produce gloss, and has excellent touch feeling, and a method for preparing the same.
Description
Technical Field
The present invention relates to a polyester composite fiber having good stretchability and a method for producing the same, and more particularly, to a polyester composite fiber having improved stretchability, no gloss, and excellent touch feeling, and a method for producing the same.
Background
Recently, as the demand for fabrics requiring high stretch properties increases, the market demand for Spandex (Spandex) is on the rise. Spandex is a polyurethane-based fiber obtained by polymerizing and melt-spinning polyether and methylene diphenyl isocyanate, and is of better quality than existing rubber filaments, e.g., lighter weight and higher aging resistance than rubber bands.
In addition, spandex is a unique fiber with elasticity similar to rubber, has very high tensile strength (tensile strength) and/or ultimate strength (ultimate strength), is therefore not easily broken, and has sufficient flexibility to be stretchable to 5 to 8 times its original length.
Furthermore, spandex is not soiled with sweat, oil, and cosmetics, and is wash-durable. In addition, spandex can draw out thin lines compared with rubber, and the dyeability is good.
On the other hand, spandex has excellent stretchability, is easy to move about, and has excellent durability, perspiration property, and drying property, and thus is widely used for various purposes such as underwear, linings, and outer garments. Also, spandex has the advantage of perspiration property that it can quickly perspire and high drying power, thus giving people a comfortable feeling.
However, spandex is expensive, poor in heat resistance, static, and alkaline resistance, and spandex precursors cannot be used alone, requiring a separate coating step. Only thicker fabrics are available, which is a limitation for the market where thinner fabrics are increasingly required.
To overcome these disadvantages of spandex, stretch latent crimp yarns have been proposed. The latent crimp yarn is a fiber which is compositely spun of two polymers having different heat shrinkage properties into a Side By Side (Side By Side) or a Core-Sheath (Sheath-Core) type and then physically wound in a coil shape By a difference in heat shrinkage rate generated By applying heat in a spinning process or a drawing process to impart high stretchability in a spring-like principle. Although the conventional spandex fiber is not achieved in terms of stretchability, a latent crimped fiber which is excellent in alkali resistance, form stability and the like, and is easy to dye and post-process is often used because of the above-mentioned disadvantages of spandex.
On the other hand, as a latent crimped fiber, a fiber obtained by composite spinning of a polyester resin having a difference in viscosity has been proposed, and the fiber produced by the above-mentioned method cannot sufficiently obtain a desired stretchability.
Further, a composite fiber in which a potentially crimped yarn contains polytrimethylene terephthalate (PTT) for high stretchability has been proposed, but since the monomer cost required for polymerization of the polytrimethylene terephthalate is high, there is a problem that the material cost increases, and the production cost of the composite fiber itself increases.
Disclosure of Invention
Problems to be solved
The present invention has been made to solve the above problems, and an object of the present invention is to provide a polyester composite fiber which does not produce gloss, is excellent in touch feeling, and has good stretchability, and a method for producing the same.
Means for solving the problems
In order to solve the above problems, the polyester composite fiber having good stretchability of the present invention may be a polyester composite fiber prepared by composite spinning of a first component and a second component.
In a preferred embodiment of the invention, the first component may comprise polybutylene terephthalate (PBT).
In a preferred embodiment of the invention, the second component may comprise polyethylene terephthalate (PET).
In a preferred embodiment of the present invention, the polyester composite fiber of the present invention may satisfy the following relational formula 1.
[ relational expression 1]
0.30dl/g≤|A-B|≤0.80dl/g
In the above relational expression 1, a represents the intrinsic viscosity of the first component, and B represents the intrinsic viscosity of the second component.
In a preferred embodiment of the invention, the intrinsic viscosity of the first component may be from 0.90dl/g to 1.30 dl/g.
In a preferred embodiment of the present invention, the melting point of the first component may be 200 ℃ to 250 ℃.
In a preferred embodiment of the invention, the intrinsic viscosity of the second component may be in the range of 0.40dl/g to 0.70 dl/g.
In a preferred embodiment of the present invention, the melting point of the second component may be 230 ℃ to 270 ℃.
In a preferred embodiment of the invention, the first component may further comprise a matting agent.
In a preferred embodiment of the invention, the second component may further comprise a matting agent.
In a preferred embodiment of the present invention, the matting agent may comprise a material selected from titanium oxide (TiO)2) Zinc oxide (ZnO), silicon oxide (SiO)2) And barium sulfate (BaSO)4) At least one of (1).
In a preferred embodiment of the present invention, the first component may include 1.0 to 3.0 weight percent of the matting agent with respect to the total weight percent.
In a preferred embodiment of the present invention, the second component may include 1.0 to 3.0 weight percent of the matting agent with respect to the total weight percent.
In a preferred embodiment of the present invention, the weight ratio of the first component and the second component may be 30: 70 to 70: 30.
in a preferred embodiment of the present invention, the cross-sectional shape of the polyester composite fiber of the present invention may be a peanut-shaped juxtaposition type or a circular juxtaposition type.
In a preferred embodiment of the present invention, the intrinsic viscosity of the polyester composite fiber of the present invention may be 0.50dl/g to 0.80 dl/g.
In a preferred embodiment of the present invention, the polyester composite fiber of the present invention may include 1.0 to 3.0 weight percent of the matting agent with respect to the total weight percent.
In a preferred embodiment of the present invention, the polyester composite fiber of the present invention may have a fineness of 20 to 180 deniers and a filament number of 12 to 96 filaments.
In a preferred embodiment of the present invention, the polyester composite fiber of the present invention may have a leisenna shrinkage (Leesona shrinkage) (%) measured according to the following equation 1 of 15 to 30%.
[ equation 1]
In the above equation 1, in order to measure the above-mentioned Leisena shrinkage, a load of 20.5g is applied to the conjugate fiber and an initial length (L) is measured0) The sheet was immersed in hot water at 82 ℃ for 10 minutes under a load of 20.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
In a preferred embodiment of the present invention, the residual shrinkage (%) of the polyester composite fiber of the present invention, measured according to the following equation 2, may be 45% to 70%.
[ equation 2]
In the above equation 2, in order to measure the above residual shrinkage, a load of 1.5g was applied to the conjugate fiber and an initial length (L) was measured0) The resulting film was immersed in hot water at 82 ℃ for 10 minutes under a load of 1.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
On the other hand, the method for preparing the polyester composite fiber having good stretchability of the present invention may comprise: a first step of melting a first component and a second component, respectively; and a second step of subjecting the molten first component and second component to composite spinning to prepare a polyester composite fiber.
In a preferred embodiment of the present invention, the prepared composite fiber may be an apposition type composite fiber having an intrinsic viscosity of 0.60dl/g to 0.80 dl/g.
In a preferred embodiment of the present invention, the prepared composite fiber may have a lissenna shrinkage (%) of 15% to 30% as determined according to the following equation 1.
[ equation 1]
In the above equation 1, in order to measure the above-mentioned Leisena shrinkage, a load of 20.5g is applied to the conjugate fiber and an initial length (L) is measured0) The sheet was immersed in hot water at 82 ℃ for 10 minutes under a load of 20.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
In a preferred embodiment of the invention, the first component may comprise polybutylene terephthalate (PBT) and a matting agent.
In a preferred embodiment of the present invention, the second component may include polyethylene terephthalate (PET) and a matting agent.
In a preferred embodiment of the present invention, the method for preparing the polyester composite fiber having good stretchability of the present invention may satisfy the following relational formula 1.
[ relational expression 1]
0.30dl/g≤|A-B|≤0.80dl/g
In the above relational expression 1, a represents the intrinsic viscosity of the first component, and B represents the intrinsic viscosity of the second component.
In a preferred embodiment of the present invention, the full lap (%) of the polyester composite fiber produced in the method for producing a polyester composite fiber having good stretchability of the present invention may be 80% or more as measured according to the following equation 3.
[ equation 3]
Further, the fabric of the present invention includes the polyester composite fiber having good stretchability as described above.
Hereinafter, terms used in the present invention will be described.
The term "fiber" as used in the present invention means "filament" or "thread" and means a plurality of filaments or fibers in general.
The term "composite fiber" as used in the present invention means a strand as it is produced by composite spinning, or a fiber comprising the strand subjected to a drawing step and/or a partial drawing step.
The term "heat treatment temperature" used in the present invention means a surface temperature of a secondary godet roll among godets commonly used in a drawing process.
ADVANTAGEOUS EFFECTS OF INVENTION
The polyester composite fiber having good stretchability of the present invention does not produce gloss and is excellent in touch feeling.
In addition, the polyester composite fiber having good stretchability of the present invention can be applied to various products requiring the use of a fiber having excellent stretchability and no gloss. Specifically, the polyester composite fiber having good stretchability of the present invention is suitable for use as a raw yarn of a woven or knitted fabric requiring stretchability, and a fabric itself comprising the polyester composite fiber does not produce luster and has excellent touch and stretchability.
Drawings
Fig. 1 is a schematic view of a side-by-side type composite fiber having a peanut-shaped sectional shape according to a preferred embodiment of the present invention.
Fig. 2 is an SEM photograph of a juxtaposed type composite fiber having a peanut-shaped sectional shape according to a preferred embodiment of the present invention.
Fig. 3 is a schematic view of a side-by-side type composite fiber having a circular sectional shape according to a preferred embodiment of the present invention.
Fig. 4 is an SEM photograph of a side-by-side type composite fiber having a circular sectional shape according to a preferred embodiment of the present invention.
Fig. 5 is a flowchart of a preparation process according to a preferred embodiment of the present invention.
Fig. 6 is a schematic view of a manufacturing process according to a preferred embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention can be realized in various different embodiments, and is not limited to the embodiments described in the present specification. In order to clearly explain the present invention, portions that are not related to the description are omitted in the drawings, and the same reference numerals are given to the same or similar components throughout the specification.
The polyester composite fiber having good stretchability of the present invention is prepared by composite spinning of a first component and a second component.
The first component of the polyester composite fiber having good stretchability of the present invention may include polybutylene terephthalate (PBT). As an example, polybutylene terephthalate (PBT) can be prepared by polymerizing butanediol and terephthalic acid.
Also, the second component of the polyester composite fiber having good stretchability of the present invention may include polyethylene terephthalate (PET). As an example, polyethylene terephthalate (PET) can be prepared by polymerizing ethylene glycol and terephthalic acid.
On the other hand, the polyester composite fiber having good stretchability of the present invention may satisfy the following relational expression 1, and if it is out of the range described in the following relational expression 1, there may be a problem that the expression of stretchability is very slight.
[ relational expression 1]
0.30 dl/g.ltoreq. A-B.ltoreq.0.80 dl/g, preferably 0.4 dl/g.ltoreq. A-B.ltoreq.0.70 dl/g, more preferably 0.4 dl/g.ltoreq. A-B.ltoreq.0.60 dl/g, even more preferably 0.45 dl/g.ltoreq. A-B.ltoreq.0.53 dl/g, most preferably 0.45 dl/g.ltoreq. A-B.ltoreq.0.49 dl/g
In the above relational expression 1, a represents the intrinsic viscosity of the first component, and B represents the intrinsic viscosity of the second component.
Further, the intrinsic viscosity (i.v) of the first component of the present invention may be 0.90dl/g to 1.30dl/g, preferably, 0.92dl/g to 1.30dl/g, more preferably, 0.95dl/g to 1.15dl/g, and still more preferably, 0.95dl/g to 1.05dl/g, and if the intrinsic viscosity is less than 0.90dl/g, there may be a problem that a desired stretchability may not be achieved, and if the intrinsic viscosity is more than 1.30dl/g, there may occur a problem that a twisting phenomenon of the composite fiber produced at the time of composite spinning is significantly increased, resulting in deterioration of spinning workability.
Also, the intrinsic viscosity (i.v) of the second component of the present invention may be 0.40dl/g to 0.70dl/g, preferably, 0.45dl/g to 0.65dl/g, more preferably, 0.48dl/g to 0.60dl/g, and still more preferably, 0.48dl/g to 0.53dl/g, and if the intrinsic viscosity is less than 0.40dl/g, there may be a problem in that the yarn bending phenomenon of the composite fiber produced at the time of composite spinning is significantly increased, resulting in deteriorated spinning operability, and if the intrinsic viscosity is more than 0.70dl/g, there may be a problem in that desired stretchability may not be achieved.
On the other hand, the melting point of the first component of the present invention may be 200 to 250 ℃, preferably, 210 to 240 ℃, more preferably, 220 to 230 ℃, and if the melting point is lower than 200 ℃, the crystallinity of the first component is reduced, and there is also a problem that the strength of the produced composite fiber is reduced, and if the melting point is higher than 250 ℃, the melt-spinning temperature is increased, so that pyrolysis occurs when the first component is melted, resulting in a problem that the strength of the produced composite fiber is reduced.
Also, the second component of the present invention may have a melting point of 230 to 270 ℃, preferably 240 to 265 ℃, more preferably 250 to 260 ℃, and if the melting point is less than 230 ℃, the crystallinity of the second component may be reduced, and there is a problem in that the strength of the prepared composite fiber is reduced, and if the melting point is more than 270 ℃, the melt-spinning temperature is increased, so that pyrolysis occurs when the second component is melted, resulting in a problem in that the strength of the prepared composite fiber is reduced.
Further, the first component of the present invention may further include a matting agent. At this time, the matting agent may include a material selected from titanium oxide (TiO)2) Zinc oxide (Zn)O), silicon oxide (SiO)2) And barium sulfate (BaSO)4) May preferably comprise titanium oxide (TiO)2). Also, titanium oxide may have an anatase type, rutile type, or brookite type crystal form, and titanium oxide may include the above crystal forms singly or in combination, but characteristics such as density, refractive index, light reflection, and absorption characteristics of titanium oxide are different depending on the crystal form, and thus may be classified and used as appropriate depending on the purpose and use. In addition, titanium oxide having a surface treatment may be contained in order to control the dispersibility in the polymer, the light reflection property, and other properties.
Also, the first component of the present invention may include 1.0 to 3.0 weight percent of the matting agent, preferably, 1.2 to 2.5 weight percent of the matting agent, more preferably, 1.5 to 2.0 weight percent of the matting agent, if the content of the matting agent is less than 1.0 weight percent, the gloss-suppressing effect is reduced, there may also be a problem that the touch feeling of the fabric prepared using the composite fiber of the present invention is reduced, and if the content of the matting agent is more than 3.0 weight percent, the coagulation phenomenon of the matting agent in the first component is increased, so that yarn breakage occurs at the time of spinning, resulting in a problem that spinning workability is deteriorated. Also, the second component of the present invention may include 1.0 to 3.0 weight percent of the matting agent, preferably, 1.2 to 2.5 weight percent of the matting agent, more preferably, 1.5 to 2.0 weight percent of the matting agent, if the content of the matting agent is less than 1.0 weight percent, the gloss-suppressing effect is reduced, there may also be a problem that the touch feeling of the fabric prepared using the composite fiber of the present invention is reduced, and if the content of the matting agent is more than 3.0 weight percent, the coagulation phenomenon of the matting agent in the second component is increased, so that yarn breakage occurs at the time of spinning, resulting in a problem that spinning workability is deteriorated.
In another aspect, the weight ratio of the first component to the second component of the present invention may be 30: 70 to 70: 30, preferably, may be 35: 65 to 65: 35, more preferably, may be 45: 55 to 55: 45, if the weight ratio of the first component is less than 30 or the weight ratio of the first component is greater than 70, the first component and the second component are not balanced, and the occurrence of yarn twisting becomes severe, which results in a problem that spinning workability is deteriorated and composite fiber drawing characteristics are also deteriorated.
Further, the cross-sectional shape of the conjugate fiber of the present invention may be a peanut-shaped side-by-side (side-by-side) or a circular side-by-side, and preferably, may be a peanut-shaped side-by-side.
Specifically, fig. 1 is a schematic view of a juxtaposed composite fiber having a peanut-shaped cross-sectional shape according to a preferred embodiment of the present invention, fig. 2 is an SEM photograph of the juxtaposed composite fiber having a peanut-shaped cross-sectional shape according to a preferred embodiment of the present invention, and it can be confirmed that the cross-sectional shape is peanut-shaped and the composite fiber includes a first component 101 and a second component 102 with reference to fig. 1 and 2. Further, fig. 3 is a schematic view of a juxtaposed composite fiber having a circular sectional shape according to a preferred embodiment of the present invention, fig. 4 is an SEM photograph of the juxtaposed composite fiber having a circular sectional shape according to a preferred embodiment of the present invention, and it can be confirmed that the sectional shape is circular and the composite fiber includes the first component 112 and the second component 113 with reference to fig. 3 and 4.
Also, the intrinsic viscosity of the conjugate fiber of the present invention may be 0.50dl/g to 0.80dl/g, preferably, 0.60dl/g to 0.80dl/g, and more preferably, 0.60dl/g to 0.70 dl/g.
Further, the conjugate fiber of the present invention may have a fineness of 20 to 180 deniers, preferably, may have a fineness of 30 to 170 deniers, more preferably, may have a fineness of 50 to 100 deniers, and may have a number of single fibers of 12 to 96, preferably, may have a number of single fibers of 20 to 60, but the present invention is not limited thereto, and may be changed according to the purpose.
On the other hand, the composite fiber of the present invention may have a lissenna shrinkage (%) of 15% to 30%, preferably, 17% to 25%, determined according to the following equation 1.
[ equation 1]
In the above equation 1, in order to measure the above-mentioned Leisena shrinkage, a load of 20.5g is applied to the conjugate fiber and an initial length (L) is measured0) The sheet was immersed in hot water at 82 ℃ for 10 minutes under a load of 20.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
Specifically, the lissenna shrinkage ratio may be a percentage of a length shrunk after heat treatment in water at 82 ± 3 ℃ for 10 minutes to a length in an original state by applying a load of 20.5g to a drawn yarn in a strand state obtained by drawing a composite fiber with a primary godet at a speed of 1,700mpm and a temperature of 73 ℃ and a secondary godet at a speed of 4,400mpm and a temperature of 120 ℃.
Also, the residual shrinkage (%) of the composite fiber of the present invention, measured according to the following equation 2, may be 40% to 70%, preferably, 47% to 63%.
[ equation 2]
In the above equation 2, in order to measure the above residual shrinkage, a load of 1.5g was applied to the conjugate fiber and an initial length (L) was measured0) The resulting film was immersed in hot water at 82 ℃ for 10 minutes under a load of 1.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
Specifically, the Residual shrinkage ratio (percent) may be a percentage of a length shrunk after heat treatment in water at 82 ± 3 ℃ for 10 minutes, with respect to a length in an original state, by applying a load of 1.5g to a drawn yarn in a strand state obtained by drawing a composite fiber using a primary godet roller at a speed of 1,700mpm and a temperature of 73 ℃ and a secondary godet roller at a speed of 4,400mpm and a temperature of 120 ℃.
When the leisenna shrinkage rate (Leesona shrinkage) of 15% to 30% and the residual shrinkage rate of 40% to 70% are satisfied, the composite fiber of the present invention may exhibit the most excellent stretchability, if the leisenna shrinkage rate is less than 15% or the residual shrinkage rate is less than 40%, there may be a problem of reduced stretchability, and if the leisenna shrinkage rate is more than 30% or the residual shrinkage rate is more than 70%, the curling may be seriously expressed in a raw yarn state, a phenomenon in which filaments are entangled with each other may become serious, and thus there may be a problem in that the process operability is significantly reduced when preparing fabrics and knits.
On the other hand, the method for preparing the polyester composite fiber having good stretchability of the present invention comprises a first step and a second step.
Specifically, fig. 5 is a flow chart of a preparation process according to a preferred embodiment of the present invention, and referring to fig. 5, the conjugate fiber of the present invention can be prepared by passing through a first step (S10) of melting a first component and a second step (S11) of conjugate spinning, and further, after spinning, can pass through a cooling and solidifying step (S12), a finish supplying step (S13), and a heat fixing and stretching step (S14).
First, in the first step of the method for preparing a polyester composite fiber having good stretchability of the present invention, the first component and the second component may be melted separately. At this time, the first component may include polybutylene terephthalate (PBT), and may further include a matting agent. Also, the second component may include polyethylene terephthalate (PET) and may also include a matting agent.
Also, the prepared composite fiber may be an in-line composite fiber having an intrinsic viscosity of 0.60dl/g to 0.80 dl/g.
Also, the prepared composite fiber may have a lissenna shrinkage (%) of 15% to 30% as determined according to the following equation 1.
[ equation 1]
In the above equation 1, in order to measure the above-mentioned Leisena shrinkage, a load of 20.5g was applied to the conjugate fiberLoad and determine initial length (L)0) The sheet was immersed in hot water at 82 ℃ for 10 minutes under a load of 20.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
Also, the following relational expression 1 can be satisfied. If the amount is outside the range described in the following relational expression 1, the composite fiber produced may have a problem of little expression of stretchability.
[ relational expression 1]
0.30 dl/g.ltoreq. A-B.ltoreq.0.80 dl/g, preferably 0.4 dl/g.ltoreq. A-B.ltoreq.0.70 dl/g, more preferably 0.4 dl/g.ltoreq. A-B.ltoreq.0.60 dl/g, even more preferably 0.45 dl/g.ltoreq. A-B.ltoreq.0.53 dl/g, most preferably 0.45 dl/g.ltoreq. A-B.ltoreq.0.49 dl/g
In the above relational expression 1, a represents the intrinsic viscosity of the first component, and B represents the intrinsic viscosity of the second component.
For reference, fig. 6 is a schematic view of a manufacturing process according to a preferred embodiment of the present invention, in which the first component 10 and the second component 20 may be melted in the melting part.
Next, in the second step of the method for producing a polyester composite fiber having good stretchability of the present invention, the polyester composite fiber can be produced by composite spinning the first component and the second component melted in the first step.
In this case, as the composite spinning of the second step, the ratio of 30: 70 to 70: 30, preferably, the spinning temperature may be 250 to 300 ℃, more preferably, 260 to 280 ℃, and the spinning speed may be 3000 to 4500 mpm.
On the other hand, the composite spinning of the second step may be performed by spinnerets of various shapes, and preferably, composite fibers having a cross-sectional shape of a peanut-shaped side-by-side type or a circular side-by-side type may be prepared by a side-by-side spinneret having a peanut-shaped cross-sectional shape or a side-by-side spinneret having a circular cross-sectional shape.
Further, after the second step, the composite fiber subjected to the composite spinning is subjected to a cooling and solidification process (40 of fig. 6) at a cooling wind temperature of 15 to 25 ℃ and a speed of 25 to 50 mpm. When the amount is outside the above range, there is a problem that it is difficult to control the shape of the cross section of the composite fiber and the uniformity cannot be improved.
Secondly, an oil agent can be provided for smooth spinning and winding. As for the oil agent supply, an oil spray method or an oil roll method may be used in the guide (50 in fig. 6) provided in the solidification region, and either of the two methods may be used.
After the oil agent is supplied, a partial stretching step or a stretching step may be further included. The fiber orientation is improved by the partial drawing or stretching process, so that a fiber having higher strength can be obtained.
The following will specifically describe based on the two rolls (primary godet roll 60, secondary godet roll 70) of fig. 6.
The partial stretching may be performed at a first godet speed of 2,000mpm to 3,500mpm and a second godet speed of 2,000mpm to 3,500 mpm.
In the case of the above-described drawing step, the primary godet roll speed may be, specifically, 1,000 to 2,500mpm, preferably 1,400 to 2,000 mpm. If the speed of the primary godet is less than 1,000mpm, there is a problem that physical properties are deteriorated with the change of the raw yarn with time, and the spinning tension is low due to the low speed of the primary godet, and yarn breakage may occur frequently. If the speed of the primary godet roll is more than 2,500mpm, there is a possibility that dyeing defects may be caused due to uneven stretching. The temperature of the above primary godet roll may be 50 ℃ to 100 ℃, preferably, may be 70 ℃ to 80 ℃.
Second, the secondary godet speed may be 3,000mpm to 5,000mpm, and preferably, the secondary godet speed may be 3,500mpm to 4,500mpm in view of spinning operability. If the speed of the secondary godet is less than 3,000mpm, the physical properties of the spun yarn, particularly the elongation, are reduced, and the productivity is lowered. If the speed of the secondary godet is higher than 5,000mpm, severe yarn vibration may occur in the secondary godet, resulting in yarn breakage. The temperature of the secondary godet roll may be 90 ℃ to 150 ℃, preferably, may be 110 ℃ to 130 ℃. If the heat setting temperature of the secondary godet is lower than 90 ℃, there is a possibility that physical properties such as elongation may change with time and become raw yarns with high shrinkage, and excessive shrinkage may occur later in dyeing of the fabric, and if the heat setting temperature of the secondary godet is higher than 150 ℃, there is a possibility that a serious yarn vibration occurs in the secondary godet, and it is difficult to achieve stable operation.
On the other hand, the full lap (%) of the composite fiber produced by the production method of the present invention, as measured according to the following equation 3, may be 80% or more, preferably, the full lap (%) may be 85% or more, more preferably, 90% to 99.9%, and the higher the full lap, the more excellent the spinning workability.
[ equation 3]
As described above, the conjugate fiber of the present invention has excellent spinning workability even when two (first component and second component) components having different intrinsic viscosities are compositely spun.
Also, the present invention provides a fabric comprising the polyester fiber having good stretchability of the present invention.
The above fabrics, which are terms used in the present invention, are meant to all include woven fabrics or knitted fabrics.
First, the fabric may be a woven fabric woven (weaved) using the polyester composite fiber having good stretchability according to the present invention as one or more of warp and weft.
The weaving may be performed by one selected from the group consisting of a plain weave, a twill weave, a satin weave, and a double weave.
However, the present invention is not limited to the above description of the weave structure, and the warp and weft densities in weaving are not particularly limited.
Also, the fabric may be a woven fabric woven (knotting) by including polyester fibers having good stretchability. The above-mentioned knitting can be carried out by weft knitting or warp knitting, and the specific method of the above-mentioned weft knitting or warp knitting can be carried out by a usual knitting method of weft knitting or warp knitting.
Although the present invention has been described with reference to the embodiments, the description is merely exemplary and not intended to limit the embodiments of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and applications of the present invention without departing from the essential characteristics of the embodiments. For example, each component specifically appearing in the embodiment of the present invention can be implemented in a modified manner. And, the differences associated with these variations and modifications fall within the spirit and scope of the present invention as defined in the appended claims.
Example 1: preparation of polyester composite fiber
(1) As a first component, titanium oxide (TiO) was prepared so as to include 1.5 weight percent with respect to the total weight percent2) Polybutylene terephthalate (PBT). At this time, the first component had a melting point of 223 ℃ and an intrinsic viscosity of 0.98 dl/g.
And, as a second component, titanium oxide (TiO) was prepared to include 1.8 weight percent with respect to the total weight percent2) Polyethylene terephthalate (PET). At this time, the second component had a melting point of 254 ℃ and an intrinsic viscosity of 0.50 dl/g.
(2) Composite spinning is performed by setting the melting temperature of a first component prepared for preparing a composite fiber to 270 ℃, the melting temperature of a second component prepared to 275 ℃ and the spinning temperature to 272 ℃, wherein the discharge weight ratio of the first component to the second component is set to 50: 50. the primary godet for drawing was wound at a speed of 1,700mpm and a temperature of 73 c, and the secondary godet was wound at a speed of 4,400mpm and a temperature of 120 c at a winding speed of 4,340mpm, thereby preparing polyester composite fibers having a fineness of 75 denier, a number of single fibers of 24, and a cross-sectional shape of a peanut-shaped side by side type including 1.65% of titanium oxide with respect to the total weight, as shown in table 1 below.
Example 2: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a first component having a melting point of 220 ℃ and an intrinsic viscosity of 0.90dl/g is used instead of the first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.98dl/g to prepare a polyester composite fiber.
Example 3: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, the difference from example 1 is that the discharge weight ratio of the first component and the second component is not 50: 50, but 60: 40, thereby preparing the polyester composite fiber.
Example 4: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, the difference from example 1 is that the discharge weight ratio of the first component and the second component is not 50: 50, but 40: 60, thereby preparing the polyester composite fiber.
Example 5: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a polyester composite fiber having a fineness of 40 deniers and a number of 24 single fibers including 1.65% of titanium oxide with respect to the total weight percentage, which had a peanut-shaped juxtaposed-type sectional shape, was prepared instead of the polyester composite fiber having a fineness of 75 deniers and a number of 24 single fibers including 1.65% of titanium oxide with respect to the total weight percentage, which had a peanut-shaped juxtaposed-type sectional shape.
Example 6: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a polyester composite fiber having a circular juxtaposed type sectional shape of 40 deniers and 24 single fibers including 1.65% of titanium oxide with respect to the total weight percentage was prepared instead of the polyester composite fiber having a peanut juxtaposed type sectional shape of 75 deniers and 24 single fibers including 1.65% of titanium oxide with respect to the total weight percentage.
Example 7: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a first component having a melting point of 223 ℃ and an intrinsic viscosity of 1.10dl/g and a second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.55dl/g are used instead of the first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.98dl/g and the second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.5dl/g to prepare a polyester composite fiber.
Example 8: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a first component having a melting point of 223 ℃ and an intrinsic viscosity of 1.20dl/g and a second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.70dl/g are used instead of the first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.98dl/g and the second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.5dl/g to prepare a polyester composite fiber.
Comparative example 1: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.75dl/g and a second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.5dl/g are used instead of the first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.98dl/g and the second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.5dl/g to prepare a polyester composite fiber.
Comparative example 2: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.85dl/g and a second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.65dl/g are used instead of the first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.98dl/g and the second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.5dl/g to prepare a polyester composite fiber.
Comparative example 3: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a first component having a melting point of 223 ℃ and an intrinsic viscosity of 1.35dl/g and a second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.35dl/g are used instead of the first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.98dl/g and the second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.5dl/g to prepare a polyester composite fiber.
Comparative example 4: preparation of polyester composite fiber
A polyester composite fiber was prepared in the same manner as in example 1. However, it is different from example 1 in that a first component having a melting point of 223 ℃ and an intrinsic viscosity of 1.60dl/g and a second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.75dl/g are used instead of the first component having a melting point of 223 ℃ and an intrinsic viscosity of 0.98dl/g and the second component having a melting point of 254 ℃ and an intrinsic viscosity of 0.5dl/g to prepare a polyester composite fiber.
Experimental example 1: measurement of physical Properties of polyester composite fiber
The experiments described below were performed on the polyester composite fibers prepared in examples 1 to 8 and comparative examples 1 to 4, respectively, and the results thus measured are shown in tables 1 to 3 below.
1. Measurement of Strength and elongation
An automatic tensile tester (Textech, Germany) was used, and the measurement was carried out at a speed of 200cm/min and a holding distance of 50 cm. Strength and elongation are defined as follows: the value (g/de) of the load divided by the Denier (Denier) when a constant force is applied to the conjugate fiber and the conjugate fiber is extended until cut is defined as the tenacity, and the value (%) of the initial length relative to the length of the stretch, which is expressed in percentage, is defined as the elongation.
2. Measurement of spinning operability
In order to evaluate the spinning operability, the full-package percentage (%) was measured, and the yield of the polyester composite fiber without yarn breakage when the polyester composite fiber was spun in a full-package manner from 8kg bobbins of the polyester composite fiber prepared in examples and comparative examples, respectively, was measured according to the following equation 3:
[ equation 3]
3. Leesona shrinkage (Leesona shrinkage,%) and Residual shrinkage (Residual shrinkage,%) measurements
The Lesenna shrinkage and the residual shrinkage were measured according to the following equations 1 and 2.
[ equation 1]
In the above equation 1, in order to measure the above-mentioned Leisena shrinkage, a load of 20.5g is applied to the conjugate fiber and an initial length (L) is measured0) The resulting film was immersed in hot water at 82. + -. 3 ℃ for 10 minutes under a load of 20.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
[ equation 2]
In the above equation 2, in order to measure the above residual shrinkage, a load of 1.5g was applied to the conjugate fiber and an initial length (L) was measured0) The resulting film was immersed in hot water at 82. + -. 3 ℃ for 10 minutes under a load of 1.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
TABLE 1
As is apparent from table 1, the polyester composite fibers prepared in examples 1 to 4 have excellent full-curl ratio, risenna shrinkage ratio, and residual shrinkage ratio at the same time, and thus it can be confirmed that both spinning workability and stretchability are excellent. Further, it can be seen that the full lap ratio of the polyester composite fibers prepared in examples 3 to 4 was slightly reduced as compared with the polyester composite fibers prepared in examples 1 to 2, and it was confirmed that the weight ratio of the first component and the second component was 50: the most excellent spinning operability is exhibited at 50 ℃.
TABLE 2
Referring to Table 2, in example 5, it was confirmed that the elongation was significantly reduced depending on the fineness of the conjugate fiber as compared with example 1.
In example 6, not only the composite fiber had a different fineness but also the strength was slightly reduced due to the circular cross-sectional shape as compared with example 1, and it was confirmed that the rissenna shrinkage and the residual shrinkage were reduced.
Further, in the case of examples 7, 8, both the lissenna shrinkage and the residual shrinkage were exhibited at satisfactory levels, but since the difference in intrinsic viscosity between the first component and the second component was large, the full-curl ratio was slightly lowered as compared with examples 1 to 4.
TABLE 3
Next, referring to Table 3 above, it was confirmed that when the intrinsic viscosity difference between the two components is lower than 0.30dl/g to 0.80dl/g, which is the target intrinsic viscosity difference, as in comparative examples 1 and 2, significantly low stretchability is exhibited.
On the other hand, it was confirmed that when the difference in intrinsic viscosity between the first component and the second component was higher than 0.30dl/g to 0.80dl/g, which is the target difference in intrinsic viscosity, as in comparative example 3, the level of yarn twisting occurred during the composite spinning was serious, resulting in considerable deterioration of spinning workability, and the full lap ratio was reduced to a level of 30%.
On the other hand, it is found that when the difference in intrinsic viscosity between the first component and the second component is higher than 0.30dl/g to 0.80dl/g, which is the target difference in intrinsic viscosity, as in comparative example 4, the level of yarn twisting occurring at the time of composite spinning is so high that spinning workability is considerably deteriorated and the full lap ratio is reduced to a level of 40%, and when the intrinsic viscosity of the second component is high, the drawing properties are also reduced.
Simple modifications or variations of the present invention may be easily implemented by those skilled in the art and are within the scope of the present invention.
Industrial applicability
The present invention relates to a polyester composite fiber having excellent stretchability and a method for producing the same, and more particularly, to a polyester composite fiber having further improved stretchability, which does not generate gloss, and which is excellent in touch feeling, and a method for producing the same.
Claims (9)
1. A polyester conjugate fiber having good stretchability, which is a polyester conjugate fiber prepared by conjugate spinning of a first component and a second component, the polyester conjugate fiber being characterized in that the conjugate fiber is a side-by-side conjugate fiber having an intrinsic viscosity of 0.60dl/g to 0.80dl/g, and the Leeson shrinkage (%) measured by the following equation 1 is 15% to 30%:
[ equation 1]
In the above equation 1, in order to measure the above-mentioned Leisena shrinkage, a load of 20.5g is applied to the conjugate fiber and an initial length (L) is measured0) At application time 20.5g in hot water at 82 ℃ for 10 minutes under a load, dried for 3 minutes, and then measured for the length (L) after the treatment1)。
2. The polyester composite fiber with good stretchability as claimed in claim 1, wherein,
the residual shrinkage (%) of the above composite fiber measured according to the following equation 2 is 40% to 70%:
[ equation 2]
In the above equation 2, in order to measure the above residual shrinkage, a load of 1.5g was applied to the conjugate fiber and an initial length (L) was measured0) The resulting film was immersed in hot water at 82 ℃ for 10 minutes under a load of 1.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
3. The polyester composite fiber with good stretchability as claimed in claim 1, wherein,
the first component includes polybutylene terephthalate, and the second component includes polyethylene terephthalate.
4. The polyester composite fiber having good stretchability as claimed in claim 3, wherein said composite fiber satisfies the following relation 1:
[ relational expression 1]
0.30dl/g≤|A-B|≤0.80dl/g
In the above relational expression 1, a represents the intrinsic viscosity of the first component, and B represents the intrinsic viscosity of the second component.
5. The polyester composite fiber having excellent stretchability as claimed in claim 1, wherein said composite fiber has a peanut-shaped cross-sectional shape.
6. The polyester composite fiber with good stretchability as claimed in claim 1, wherein said first component and said second component each independently comprise 1.0 to 3.0 weight percent of a matting agent with respect to the total weight percent.
7. The polyester composite fiber with good stretchability as claimed in claim 6, wherein said matting agent comprises at least one selected from the group consisting of titanium oxide, zinc oxide, silicon oxide and barium sulfate.
8. A method for preparing a polyester composite fiber with good elasticity is characterized by comprising the following steps:
a first step of melting a first component and a second component, respectively; and
a second step of preparing a polyester composite fiber by composite spinning the molten first component and the molten second component,
the prepared composite fiber is an apposition type composite fiber with an intrinsic viscosity of 0.60dl/g to 0.80dl/g,
the prepared composite fiber has a rilesona shrinkage ratio measured according to the following equation 1 of 15% to 30%:
[ equation 1]
In the above equation 1, in order to measure the above-mentioned Leisena shrinkage, a load of 20.5g is applied to the conjugate fiber and an initial length (L) is measured0) The sheet was immersed in hot water at 82 ℃ for 10 minutes under a load of 20.5g, dried for 3 minutes, and then the length (L) after the treatment was measured1)。
9. The method for preparing a polyester composite fiber having good stretchability as claimed in claim 8, wherein,
the composite fiber has a full curl ratio (%) of 80% or more as measured by the following equation 3,
[ equation 3]
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20190066026 | 2019-06-04 | ||
| KR10-2019-0066026 | 2019-06-04 | ||
| PCT/KR2020/006174 WO2020246719A1 (en) | 2019-06-04 | 2020-05-11 | Polyester composite fibers having excellent elasticity and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114008255A true CN114008255A (en) | 2022-02-01 |
| CN114008255B CN114008255B (en) | 2023-11-14 |
Family
ID=73652408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080045760.8A Active CN114008255B (en) | 2019-06-04 | 2020-05-11 | Polyester composite fiber with good elasticity and preparation method thereof |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7320081B2 (en) |
| KR (1) | KR20220004930A (en) |
| CN (1) | CN114008255B (en) |
| WO (1) | WO2020246719A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102557960B1 (en) * | 2021-02-16 | 2023-07-19 | 도레이첨단소재 주식회사 | cation dyeable polyester complexfiber and method for manufacturing thereof |
| KR20240014211A (en) * | 2022-07-25 | 2024-02-01 | 도레이첨단소재 주식회사 | Polyester complexfiber and method for manufacturing thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851812A (en) * | 2009-12-18 | 2010-10-06 | 东丽纤维研究所（中国）有限公司 | Parallel composite elastic fiber and manufacture method thereof |
| KR20130131001A (en) * | 2012-05-23 | 2013-12-03 | 웅진케미칼 주식회사 | Flame-retardant recycled low melting polyester fiber |
| KR20160119915A (en) * | 2015-04-06 | 2016-10-17 | 주식회사 휴비스 | Polyester Complex Hollow Fiber And Warmth Filler Using That |
| KR20170010167A (en) * | 2015-07-15 | 2017-01-26 | 주식회사 휴비스 | The Manufacturing Method For Good Bulky Polyester Complex Hollow Fiber And Warmth Filler Using That |
| CN108138379A (en) * | 2016-05-23 | 2018-06-08 | 东丽纤维研究所（中国）有限公司 | A kind of parallel composite fiber |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5551051B2 (en) * | 1973-04-02 | 1980-12-22 | ||
| JPS5184924A (en) * | 1975-01-17 | 1976-07-24 | Kuraray Co | KOKENSHUKUSEIHORIESUTERUKEIFUKUGOSENI |
| JPS5789617A (en) * | 1980-11-24 | 1982-06-04 | Kuraray Co Ltd | Composite fiber and its preparation |
| JPS5813720A (en) * | 1981-07-14 | 1983-01-26 | Teijin Ltd | Production of nontorque crimped yarn with high stretchability |
| JPS58169514A (en) * | 1982-03-26 | 1983-10-06 | Teijin Ltd | Polyester conjugated and crimped yarn |
| JP3786435B2 (en) * | 1993-05-06 | 2006-06-14 | 帝人ファイバー株式会社 | Polyester composite yarn |
| KR100192662B1 (en) * | 1993-06-08 | 1999-06-15 | 이형도 | Inyoke loading device |
| JP2898532B2 (en) * | 1994-01-31 | 1999-06-02 | 帝人株式会社 | Suede-like fabric manufacturing method |
| JP3563160B2 (en) * | 1995-08-02 | 2004-09-08 | 株式会社クラレ | Longline |
| JP3692931B2 (en) * | 2000-12-11 | 2005-09-07 | 東レ株式会社 | POLYESTER SHORT FIBER HAVING LATIN CRIMMING CHARACTERISTICS AND PROCESS FOR PRODUCING THE SAME |
| JP2007169806A (en) * | 2005-12-20 | 2007-07-05 | Kaneka Corp | Fiber bundle for artificial hair and wig for head ornament using the same |
| KR101458615B1 (en) * | 2012-05-23 | 2014-11-11 | 도레이케미칼 주식회사 | Flame-retardant low melting polyester fiber and manufacturing method thereof |
| JP2014040683A (en) * | 2012-08-22 | 2014-03-06 | Kuraray Co Ltd | Cation-dyeable split type conjugate fiber |
| JP6282860B2 (en) * | 2013-12-19 | 2018-02-21 | ユニチカトレーディング株式会社 | Method for producing polyester composite false twisted yarn |
-
2020
- 2020-05-11 WO PCT/KR2020/006174 patent/WO2020246719A1/en active Application Filing
- 2020-05-11 KR KR1020207014972A patent/KR20220004930A/en not_active Application Discontinuation
- 2020-05-11 JP JP2021572073A patent/JP7320081B2/en active Active
- 2020-05-11 CN CN202080045760.8A patent/CN114008255B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851812A (en) * | 2009-12-18 | 2010-10-06 | 东丽纤维研究所（中国）有限公司 | Parallel composite elastic fiber and manufacture method thereof |
| KR20130131001A (en) * | 2012-05-23 | 2013-12-03 | 웅진케미칼 주식회사 | Flame-retardant recycled low melting polyester fiber |
| KR20160119915A (en) * | 2015-04-06 | 2016-10-17 | 주식회사 휴비스 | Polyester Complex Hollow Fiber And Warmth Filler Using That |
| KR20170010167A (en) * | 2015-07-15 | 2017-01-26 | 주식회사 휴비스 | The Manufacturing Method For Good Bulky Polyester Complex Hollow Fiber And Warmth Filler Using That |
| CN108138379A (en) * | 2016-05-23 | 2018-06-08 | 东丽纤维研究所（中国）有限公司 | A kind of parallel composite fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022536095A (en) | 2022-08-12 |
| WO2020246719A1 (en) | 2020-12-10 |
| JP7320081B2 (en) | 2023-08-02 |
| CN114008255B (en) | 2023-11-14 |
| KR20220004930A (en) | 2022-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102277678B1 (en) | Eccentric Core Sheath Composite Fiber and Blended Fiber | |
| JP6973079B2 (en) | Sea-island type composite fiber, false plying and fiber structure with excellent hygroscopicity | |
| WO2009088008A1 (en) | Normal pressure cation dyeable polyester and fiber | |
| KR101188243B1 (en) | Composite fibers of high elastic polyester and method of manufacturing the same | |
| CN114008255B (en) | Polyester composite fiber with good elasticity and preparation method thereof | |
| KR100481093B1 (en) | High Self-Crimping Polyester conjugate yarn and process of producing thereof | |
| KR101103377B1 (en) | Composite fibers of high elastic polyester and method of manufacturing the same | |
| KR101543113B1 (en) | Polyester complex-fiber with highly elasticity, method for manufacturing thereof and polyester conjugated yarn using thereof | |
| KR100829480B1 (en) | Latent crimping typed polyester conjugated yarn with two component and process of manufacturing for the same | |
| KR101276098B1 (en) | Polyester Filaments Having Excellent Flame Retardancy and Method of Preparing the same | |
| KR101103379B1 (en) | Composite fibers of high elastic polyester with being improved dyeing and method of manufacturing the same | |
| KR101187734B1 (en) | Composite fibers of high elastic polyester and method of manufacturing the same using high speed spinning | |
| KR101866688B1 (en) | Rayon-like polyester composite yarn having excellent melange effect, drapability and high elasticity and manufacturing method thereof | |
| RU2344213C2 (en) | Polyester differential shrinkage combined filament thread and method for manufacturing thereof | |
| KR102402950B1 (en) | Polyester ITY yarn with excellent elasticity and Manufacturing method thereof | |
| KR102479830B1 (en) | Core-sheath type composite false-twist yarn and manufacturing method thereof | |
| KR102219084B1 (en) | Interlace composite yarn with high strength and elongation and method for producing the same | |
| KR101560914B1 (en) | Spinneret for polyester fiber with twisted yarn effect and method for manufacturing thereof | |
| KR101850628B1 (en) | Rayon-like polyester composite yarn having excellent drapability and high elasticity and manufacturing method thereof | |
| JP6753182B2 (en) | Aromatic polyester composite fiber | |
| JP3719258B2 (en) | Soft stretch yarn, production method and fabric | |
| KR20240014211A (en) | Polyester complexfiber and method for manufacturing thereof | |
| JP2010196227A (en) | Polyester combined filament yarn | |
| KR20180106711A (en) | Polyester dividing yarn having an improved stretchability and method thereof | |
| JP2005113369A (en) | Method for producing soft stretch yarn |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |