WO2007148392A1 - Fibre composite de type mer-île et procédé de fabrication - Google Patents

Fibre composite de type mer-île et procédé de fabrication Download PDF

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Publication number
WO2007148392A1
WO2007148392A1 PCT/JP2006/312467 JP2006312467W WO2007148392A1 WO 2007148392 A1 WO2007148392 A1 WO 2007148392A1 JP 2006312467 W JP2006312467 W JP 2006312467W WO 2007148392 A1 WO2007148392 A1 WO 2007148392A1
Authority
WO
WIPO (PCT)
Prior art keywords
sea
island
composite fiber
component
yarn
Prior art date
Application number
PCT/JP2006/312467
Other languages
English (en)
Japanese (ja)
Inventor
Tsuyoshi Hayashi
Yasuo Fukuda
Masayuki Sato
Original Assignee
Toray Industries, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toray Industries, Inc. filed Critical Toray Industries, Inc.
Priority to PCT/JP2006/312467 priority Critical patent/WO2007148392A1/fr
Publication of WO2007148392A1 publication Critical patent/WO2007148392A1/fr

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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
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Definitions

  • the present invention relates to a sea-island type composite fiber that can produce polytrimethylene terephthalate ultrafine fibers by dissolution-splitting treatment, and more specifically, polytrimethylene having excellent splitting properties and texture, especially softness and color development.
  • the present invention relates to a sea-island type composite fiber capable of stably producing terephthalate ultrafine fibers.
  • Polyester ultrafine fibers made of polyethylene terephthalate and having a single fiber fineness of 1 dtex or less have been used for peach knitted fabrics and wiping cloths.
  • S and other ultrafine fibers made of polyethylene terephthalate have a high refractive index of about L6, so that the color developability of ultrafine fibers is not sufficient, and the color development in dark colors is particularly poor, so there is a limit to product development.
  • the Young's modulus of the polymer itself is high, a sufficient soft feeling could not be imparted.
  • polyethylene terephthalate ultrafine fibers such as sea-island type composite fibers or split type composite fibers.
  • These composite fibers are made into polyethylene terephthalate ultrafine fibers by elution or weight reduction of one component by alkali treatment at the time of division, and become ultrafine fibers during the elution or weight reduction forces. Since the reduction of polyethylene terephthalate progresses at the same time, the strength is reduced and it may not be able to withstand practical use. Conversely, if the elution or weight reduction processing conditions are moderated in order to suppress a decrease in the strength of the polyethylene terephthalate ultrafine fibers, the splitting process may not be performed completely, leading to a reduction in product quality.
  • polytrimethylene terephthalate fiber has an excellent stretch elastic recovery rate, a low Young's modulus, a good dyeability, and is chemically stable, and has been known for a long time (Patent Document 1, 2).
  • Patent Documents 3 and 4 a method for producing polytrimethylene terephthalate ultrafine fiber with sea island type composite fiber or split type composite fiber strength has also been proposed (Patent Documents 3 and 4).
  • the polymer used as an alkali-eluting component is a polyester copolymerized with an organometallic salt, has a long alkali treatment time, has a poor productivity, and has a higher polymer melting temperature than polymethylene terephthalate. Therefore, it is necessary to keep the spinning temperature high, which causes the thermal degradation of polytrimethylene terephthalate, resulting in poor operability, and satisfactory raw yarn strength and texture cannot be obtained. .
  • Patent Document 1 Japanese Patent Laid-Open No. 52-5320
  • Patent Document 2 Japanese Patent Laid-Open No. 52-8124
  • Patent Document 3 Japanese Patent Laid-Open No. 11-123330
  • Patent Document 4 Japanese Patent Laid-Open No. 2001-348735
  • the object of the present invention is excellent in productivity, excellent softness and color development when used as a garment for clothing, and has an environmental impact of waste liquid after alkali treatment, which cannot be achieved by the above prior art. It is an object of the present invention to provide a sea-island composite fiber capable of obtaining a small polytrimethylene terephthalate ultrafine fiber.
  • the object of the present invention can be achieved by adopting the following configuration.
  • Type composite fiber
  • a woven or knitted fabric characterized in that the sea-island composite fiber according to any one of (1) to (5) is used in at least one part.
  • a woven or knitted fabric comprising the sea-island composite fiber according to any one of (1) to (5) and a natural fiber.
  • a woven or knitted fabric obtained by subjecting the woven or knitted fabric according to (6) or (7) to an alkali treatment to remove polylactic acid from the sea component polymer.
  • sea-island type composite fiber of the present invention fabrics and knitted fabrics including ultrafine fibers excellent in softness and colorability as well as excellent in partitionability by alkali treatment (hereinafter collectively referred to as woven fabrics and knitted fabrics). "Woven knitting" t ⁇ ⁇ .) Can be obtained.
  • the sea-island composite fiber of the present invention is composed of polylactic acid as the sea component and polytrimethylene terephthalate as the island component.
  • polylactic acid as a sea component
  • polytrimethylene terephthalate ultrafine fibers with high raw yarn strength, excellent productivity and excellent environmental impact can be obtained.
  • the polylactic acid referred to in the present invention is not particularly limited. Among them, polylactic acid having a number average molecular weight of 50,000 to 100,000 is preferred. Further, L-lactic acid having a purity of 95.0% to 99.5% is a polylactic acid that can maintain strength in the process, In addition, since appropriate biodegradability is obtained, the environmental load of the waste liquid after elution is reduced, which is more preferable.
  • the island component polytrimethylene terephthalate is a polyester obtained by using terephthalic acid as a main acid component and 1,3 propanediol as a main glycol component. However, It may contain a copolymerization component capable of forming another ester bond in a proportion of 20 mol% or less, preferably 10 mol% or less.
  • copolymerizable compounds include dicarboxylic acids such as isophthalic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, and sebacic acid, and glycol components such as ethylene glycol, diethylene glycol, butanediol, neopentyl glycol, and cyclohexane.
  • the sea-island composite fiber of the present invention has a raw yarn strength of 3. OcNZdtex or more. If the raw yarn strength is less than 3. OcNZdtex, the yarn maneuverability will be poor, and even in higher-order processes, breakage of single yarn, fluff, etc. will cause deterioration of process passability and product quality. In order to further improve the yarn operability and processability, the yarn strength is preferably 3.3 cNZdtex or higher.
  • the composite ratio of the sea component Z island component of the sea-island composite fiber of the present invention is 10Z90 to 50Z50 from the viewpoint of the stability of the composite form, the yarn-making property and the productivity.
  • the composite ratio of the sea component is less than 10%, a composite abnormality occurs, resulting in poor partitioning, or even when the composite form is normal, poor splitting due to poor dissolution of the sea component results in sufficient softness. Can't get.
  • the composite ratio of sea components exceeds 50%, the productivity is lowered, and when the woven or knitted fabric is formed, “futsukuki” is generated, and the woven or knitted fabric does not have a sense of resilience.
  • the sea component of the sea-island type composite fiber The composite ratio of the island component is preferably 15 to 85 to 40 to 60.
  • the single fiber fineness of the island component after removing the sea component should be 0.01-1 decitex in order to achieve both soft feeling and color development. I like it. Furthermore, when the single fiber fineness of the island component is set to 0.01 to 1 dtex, the stability of yarn production is also improved. When the single fiber fineness is 0.01 decitex or more, sufficient color development can be achieved, and when the single fiber fineness is 1 decitex or less, sufficient softness can be exhibited. A more preferable range of the single fiber fineness of the island component is 0.04 to 0.90 decitex, and further preferably 0.05 to 0.80 decitex.
  • the cross-sectional shape of the sea-island type composite fiber may be a round cross-section or an irregular cross-section such as flat, hollow, or triangular.
  • the cross-sectional shape of the island component after removing the sea component may be a round cross-section or a deformed cross-section such as flat, hollow, or triangular.
  • the sea-island type composite fiber of the present invention preferably has 3 to 100 island components in the single fiber in order to achieve both the spinning property and the soft feeling.
  • a soft feeling can be expressed by making ultra-fine fibers by alkali treatment of sea-island type composite fibers.
  • the number of island components is 100 or less, it is possible to achieve both the yarn forming property and the soft feeling.
  • a more preferred range for the number of island components in a single fiber is 6-80.
  • the sea-island type composite fiber of the present invention uses, for example, the apparatus shown in FIG. 3 of Japanese Patent Laid-Open No. 57-47938 as the preferred example of FIG. 2 of Japanese Patent Laid-Open No. 57-82526. It can be manufactured.
  • any process such as a method of continuously spinning and drawing, a method of drawing after unwinding as an undrawn yarn, or a high-speed yarn making method, etc. It can also be applied to. If necessary, apply false twisting or air entanglement.
  • the spinning temperature In the production of the sea-island composite fiber in the present invention, it is preferable to melt at a spinning temperature of 240 to 265 ° C in order to maintain the characteristics of polytrimethylene terephthalate which is an island component. Since polytrimethylene terephthalate is a polymer that undergoes severe thermal degradation, it is preferable that the spinning temperature be as low as possible in order to maintain color development, softness and alkali resistance. On the other hand, in the conventional technique using copolymerized polyethylene terephthalate as the sea component, the spinning temperature cannot be lowered, and ultrafine fibers having excellent characteristics cannot be obtained. In the present invention, since polylactic acid is used as a sea component, the spinning temperature can be lowered. Further, it is preferable from the viewpoint of preventing thermal degradation of the polytrimethylene terephthalate to make the residence time as short as possible, such as shortening the piping of the melting part.
  • the draw ratio is preferably set so that the obtained fiber has an elongation of 20 to 50%.
  • the sea-island type composite fiber of the present invention can form an ultrafine fiber by removing sea components, and can be a woven fabric or a knitted fabric using a strong ultrafine fiber.
  • the sea component may be removed even after the woven fabric or knitted fabric is formed.
  • the sea component may be removed to form ultrafine fibers, and then the woven fabric or knitted fabric may be configured.
  • the sea-island type composite fiber of the present invention uses polylactic acid as a sea component, so the alkali elution rate is low. It can remove sea components without damaging fast natural fibers.
  • the unwoven / knitted rate of natural fibers is preferably 20% by weight or more because the texture of natural fibers can be utilized.
  • the union / knitting rate of the ultrafine fibers obtained from the sea-island composite fibers is preferably 20% by weight or more after alkali treatment of the woven / knitted fabric, and more preferably 25% by weight or more.
  • PET composite fiber made of poly (ethylene terephthalate) with an island component fineness of 0.05 decitex after sea component dissolution and removal, which was subjected to weaving and alkali weight reduction processing like the sample. It ’s inferior!
  • the composite fiber was treated with 3% NaOH hot water solution so that the weight loss rate was 5%, and the sea component was dissolved and removed.
  • ⁇ The number of island components of division abnormality is less than 5%
  • ⁇ The number of island components in the division anomaly is 5% or more and less than 10%
  • the number of draw yarn breakage force when producing 100 pieces of 2kg winding burn was also evaluated on a four-point scale.
  • Dimethino terephthalenolic acid 19.4 kg, 1,3 Pronone diene 1 15.2 kg
  • the intrinsic viscosity is polymerized for 3.5 hours under a constant temperature of 250 ° C.
  • a sea-island type compound base with 70 island components and 12 holes was wound with a compound spinning machine at a spinning temperature of 250 ° C. and a take-up speed of 1500 mZ.
  • the obtained undrawn yarn was drawn using a normal hot roll hot roll drawing machine so that the drawn yarn had an elongation of 35% at a drawing temperature of 80 ° C and a heat set temperature of 120 ° C. Stretching was performed at the same magnification. A 56 dtex-12 filament drawn yarn was obtained. Table 1 shows the properties of the drawn yarn.
  • Example 1 the composite state stability, the yarn forming property, and the stretchability were good, and the obtained fabric had a good soft feeling and good color development property.
  • Comparative Example 1 polyethylene terephthalate having an intrinsic viscosity [r?] Of 0.56 copolymerized with 4.5 mol% of 5 sodium sulfoisophthalic acid as a sea component was used. Using a compound spinning machine, the yarn was wound at a spinning temperature of 280 ° C. and a take-up speed of 1500 mZ, and the obtained undrawn yarn was obtained in the same manner as in Example 1. The obtained drawn yarn was woven and processed in the same manner as in Example 1 to obtain a woven fabric. Table 1 shows the results of evaluating the properties of drawn yarn and fabrics. Only woven fabrics with poor color development and good spinning and stretchability were obtained.
  • the stretched yarn and the woven fabric were obtained in the same manner as in Example 1 by changing the sea Z island composite ratio as shown in Table 2.
  • Table 2 shows the results of the properties of the drawn yarn obtained and the evaluation of the fabric.
  • Example 4 the composite state stability, the yarn forming property, and the drawability were good, and the resulting fabric had a good soft feeling.
  • the number of island components was changed as shown in Table 3, and the compound ratio was set using a sea-island compound base with 36 holes.
  • Example 1 Using the same polymer composition, composite ratio, and die as in Example 1, spinning at a spinning temperature of 250 ° C and a take-up speed of 2500 mZ, and after heating at 60 ° C without taking-off, 1.7 Double-stretch, heat-treat for 0.05 seconds at a temperature of 140 ° C, then draw the yarn with a roller and let it cool for 0.1 second, then take off and draw 56 dtex-12 filament I got a thread.
  • the drawn yarn had an elongation of 40%, and its texture characteristic was excellent in softness as compared with Example 1.
  • a woven fabric was produced using the obtained sea-island type composite fiber as warp and cotton (100th) as weft, and the weight was reduced with a sodium carbonate aqueous solution. Combined with the soft texture of polytrimethylene terephthalate that does not impair the texture of cotton, a fabric with an excellent texture was obtained.
  • a fabric was prepared using the sea-island type composite fiber obtained in Comparative Example 1 as warp and cotton (100th count) as weft, and the weight was reduced with sodium carbonate aqueous solution. Needless to say, because the cotton was damaged, the texture was soft and there was no soft feeling.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Multicomponent Fibers (AREA)

Abstract

L'invention concerne une fibre composite de type mer-île permettant d'obtenir une fibre ultrafine dotée d'excellentes qualités en terme de douceur au toucher et de développement chromatique. L'invention concerne une fibre composite de type mer-île contenant un polymère de composant de type mer constitué d'acide polylactique, et un polymère de composant de type île constitué de poly(téréphtalate de triméthylène). Le rapport du composite composant mer/composant île se situant entre 10/90 et 50/50, la résistance du fil brut étant de 3,0 cN/dtex ou plus.
PCT/JP2006/312467 2006-06-22 2006-06-22 Fibre composite de type mer-île et procédé de fabrication WO2007148392A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/312467 WO2007148392A1 (fr) 2006-06-22 2006-06-22 Fibre composite de type mer-île et procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/312467 WO2007148392A1 (fr) 2006-06-22 2006-06-22 Fibre composite de type mer-île et procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2007148392A1 true WO2007148392A1 (fr) 2007-12-27

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Application Number Title Priority Date Filing Date
PCT/JP2006/312467 WO2007148392A1 (fr) 2006-06-22 2006-06-22 Fibre composite de type mer-île et procédé de fabrication

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109537291A (zh) * 2018-12-11 2019-03-29 无锡双象超纤材料股份有限公司 一种高棉感超纤沙发革贝斯的制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11100721A (ja) * 1997-09-24 1999-04-13 Asahi Chem Ind Co Ltd 極細マルチフィラメント及びその製造法
WO2001066838A1 (fr) * 2000-03-03 2001-09-13 E.I. Du Pont De Nemours And Company Fil a denier fin de poly(trimethylene terephthalate)
JP2001348735A (ja) * 2000-06-06 2001-12-21 Toray Ind Inc 海島型複合繊維および混繊糸
JP2006028645A (ja) * 2004-07-12 2006-02-02 Toray Ind Inc 極細糸

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11100721A (ja) * 1997-09-24 1999-04-13 Asahi Chem Ind Co Ltd 極細マルチフィラメント及びその製造法
WO2001066838A1 (fr) * 2000-03-03 2001-09-13 E.I. Du Pont De Nemours And Company Fil a denier fin de poly(trimethylene terephthalate)
JP2001348735A (ja) * 2000-06-06 2001-12-21 Toray Ind Inc 海島型複合繊維および混繊糸
JP2006028645A (ja) * 2004-07-12 2006-02-02 Toray Ind Inc 極細糸

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109537291A (zh) * 2018-12-11 2019-03-29 无锡双象超纤材料股份有限公司 一种高棉感超纤沙发革贝斯的制备方法
CN109537291B (zh) * 2018-12-11 2021-04-30 无锡双象超纤材料股份有限公司 一种高棉感超纤沙发革贝斯的制备方法

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