WO2017082110A1 - 吸湿性、防皺性に優れた芯鞘複合断面繊維 - Google Patents
吸湿性、防皺性に優れた芯鞘複合断面繊維 Download PDFInfo
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- WO2017082110A1 WO2017082110A1 PCT/JP2016/082368 JP2016082368W WO2017082110A1 WO 2017082110 A1 WO2017082110 A1 WO 2017082110A1 JP 2016082368 W JP2016082368 W JP 2016082368W WO 2017082110 A1 WO2017082110 A1 WO 2017082110A1
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- Prior art keywords
- core
- fiber
- sheath
- composite cross
- sheath composite
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Classifications
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- 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
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
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- 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
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/292—Conjugate, i.e. bi- or multicomponent, fibres or filaments
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/573—Tensile strength
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- 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
-
- 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
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/022—Moisture-responsive characteristics hydrophylic
Definitions
- the present invention relates to a core-sheath composite cross-section fiber excellent in hygroscopicity and antifungal properties.
- Synthetic fibers made of thermoplastic resins such as polyamide and polyester are widely used in clothing and industrial applications because they are excellent in strength, chemical resistance, heat resistance and the like.
- polyamide fiber has excellent moisture absorption and release properties in addition to its unique softness, high tensile strength, coloring properties when dyeing, and high heat resistance, and is widely used for applications such as innerwear and sportswear. ing.
- polyamide fibers do not have sufficient moisture absorption and release performance compared to natural fibers such as cotton, and have problems such as stuffiness and stickiness, and are inferior to natural fibers in terms of wearing comfort. It has become.
- Patent Document 1 discloses a polyether block amide copolymer having a core-sheath composite cross-sectional fiber having a core part and a sheath part, the core part not exposed on the fiber surface, and a hard segment made of polycaproamide.
- a core-sheath composite cross-section fiber having a core / sheath area ratio of 3/1 to 1/5 in the cross section of the fiber is disclosed.
- Patent Document 2 discloses a core-sheath composite cross-section fiber having a thermoplastic polymer as a core and a fiber-forming polyamide as a sheath, and the main component of the thermoplastic polymer forming the core is a polyether ester.
- Patent Document 3 a polyether block amide copolymer is used as a core, and a fiber-forming polymer such as polyamide or polyester is used as a sheath, and the core is exposed in an exposure angle range of 5 ° to 90 °.
- a core-sheath composite cross-sectional fiber excellent in antistatic performance, water absorption performance, and contact cooling feeling is disclosed.
- the core-sheath composite cross-section fibers of Patent Documents 1 to 3 are increasingly used as woven or knitted fabrics for inner and sports applications.
- the core-sheath composite cross-section fibers of Patent Documents 1 to 3 are excellent in moisture absorption and release due to the high moisture absorption performance of the core component polymer, but have high shrinkage properties and are flexible.
- the problem was that the material was easily deformed and easily wrinkled. The same phenomenon was likely to occur during washing.
- the core part deteriorated by repeated actual use, and a decrease in moisture absorption performance due to repeated use was also a problem.
- An object of the present invention is to overcome the problems of the prior art and to provide a core-sheath composite cross-sectional fiber excellent in moisture absorption / release performance and anti-mold properties. It is another object of the present invention to provide a core-sheath composite cross-section fiber that maintains moisture absorption performance even after washing.
- the present invention has the following configuration.
- the core polymer is a thermoplastic polymer
- the sheath polymer is a polyamide having a dicarboxylic acid unit whose main component is a sebacic acid unit, and the boiling water shrinkage is 6.0 to 12.0%.
- a core-sheath composite cross-section fiber having a stress per unit fineness of 3% elongation in a tensile test of 0.60 cN / dtex or more.
- a core-sheath composite cross-sectional fiber that is excellent in moisture absorption performance and anti-mold properties and that maintains moisture absorption performance even after washing.
- the core-sheath composite cross-section fiber of the present invention uses a polyamide having a dicarboxylic acid unit whose main component is a sebacic acid unit as the sheath polymer, and a thermoplastic polymer having high moisture absorption performance as the core polymer.
- a polyamide having a dicarboxylic acid unit mainly composed of a sebacic acid unit in a sheath is a polymer composed of a high molecular weight substance in which a so-called hydrocarbon is connected to a main chain through an amide bond.
- Examples include pentamethylene sebacamide, polyhexamethylene sebacamide, and copolymers thereof, but from an economical aspect, relatively easy to produce yarn, dyeability, and excellent mechanical properties.
- Such a polyamide is preferably a polyamide mainly composed of polyhexamethylene sebacamide.
- the polyamide having a dicarboxylic acid unit whose main component is a sebacic acid unit in the sheath includes various additives such as matting agents, flame retardants, antioxidants, ultraviolet absorbers, infrared absorbers, crystal nucleating agents, A fluorescent whitening agent, an antistatic agent, a hygroscopic polymer, carbon, and the like may be copolymerized or mixed as required when the total additive content is 0.001 to 10% by weight.
- the thermoplastic polymer having a high hygroscopic performance in the core portion refers to a polymer having ⁇ MR measured in a pellet shape of 10% or more, and examples thereof include a polyether ester amide copolymer, polyvinyl alcohol, and a cellulose-based thermoplastic polymer. Among them, polyether ester amide copolymers are preferable from the viewpoint of good thermal stability and compatibility with the polyamide in the sheath and excellent peel resistance.
- ⁇ MR here refers to weighing 1 to 2 g of a pellet in a weighing bottle, drying it at 110 ° C. for 2 hours, measuring the weight (W0), and then measuring the pellet at 20 ° C. and 65% relative humidity.
- the weight (W65) after holding for a time is measured.
- maintaining a pellet for 24 hours at 30 degreeC and 90% of relative humidity is measured. And it is calculated according to the following formula.
- the polyether ester amide copolymer is a block copolymer having an ether bond, an ester bond and an amide bond in the same molecular chain. More specifically, one or two or more polyamide components (A) selected from lactam, aminocarboxylic acid, diamine and dicarboxylic acid salt, and polyetherester component consisting of dicarboxylic acid and poly (alkylene oxide) glycol ( It is a block copolymer polymer obtained by subjecting B) to a polycondensation reaction.
- A polyamide components selected from lactam, aminocarboxylic acid, diamine and dicarboxylic acid salt, and polyetherester component consisting of dicarboxylic acid and poly (alkylene oxide) glycol
- polyamide component (A) examples include lactams such as ⁇ -caprolactam, dodecanolactam and undecanolactam, ⁇ -aminocarboxylic acids such as aminocaproic acid, 11-aminoundecanoic acid and 12-aminododecanoic acid, and polyhexamethylene azimuth.
- lactams such as ⁇ -caprolactam, dodecanolactam and undecanolactam
- ⁇ -aminocarboxylic acids such as aminocaproic acid, 11-aminoundecanoic acid and 12-aminododecanoic acid
- polyhexamethylene azimuth There are nylon salts of diamine-dicarboxylic acid which are precursors of pamide, polyhexamethylene sebacamide, polyhexamethylene dodecanamide and the like, and a preferred polyamide component is ⁇ -caprolactam.
- the polyether ester component (B) is composed of a dicarboxylic acid having 4 to 20 carbon atoms and poly (alkylene oxide) glycol.
- dicarboxylic acid having 4 to 20 carbon atoms include aliphatic dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid, and dodecanoic acid, terephthalic acid, isophthalic acid, and 2,6-naphthalenedicarboxylic acid.
- An aromatic dicarboxylic acid such as an acid, an alicyclic dicarboxylic acid such as 1,4-cyclohexanedicarboxylic acid, and the like can be mentioned, and one or a mixture of two or more can be used.
- Preferred dicarboxylic acids are adipic acid, sebacic acid, dodecanoic acid, terephthalic acid, and isophthalic acid.
- Examples of poly (alkylene oxide) glycols include polyethylene glycol, poly (1,2- and 1,3-propylene oxide) glycol, poly (tetramethylene oxide) glycol, poly (hexamethylene oxide) glycol, and the like. Polyethylene glycol having good moisture absorption performance is preferred.
- the number average molecular weight of poly (alkylene oxide) glycol is preferably 300 to 10,000, more preferably 500 to 5,000. It is preferable for the molecular weight to be 300 or more because the fiber is less likely to splash out of the system during the polycondensation reaction and the moisture absorption performance is stable. Moreover, it is preferable that it is 10000 or less because a uniform block copolymer is obtained and the spinning property is stabilized.
- the constituent ratio of the polyether ester component (B) is preferably 20 to 80% in terms of mol ratio. When it is 20% or more, good hygroscopicity is obtained, which is preferable. Moreover, it is preferable that it is 80% or less because good dyeing fastness and washing durability can be obtained.
- the core-sheath composite cross-section fiber of the present invention needs to have a boiling water shrinkage of 6.0 to 12.0%.
- the boiling water shrinkage rate exceeds 12.0%, the fiber is likely to be deformed in the dyeing process, and easily wrinkled.
- the boiling water shrinkage rate is less than 6.0%, although the fouling resistance is excellent, the operability in the yarn making process may be deteriorated and the quality may be deteriorated.
- the anti-mold property is excellent.
- it is 6.0 to 10.0%.
- the core-sheath composite cross-section fiber of the present invention needs to have a stress per unit fineness of 0.60 cN / dtex or more when stretched by 3% in a fiber tensile test.
- the stress at the time of 3% elongation in the tensile test of the fiber was determined by performing a tensile test on the sample under the constant speed elongation condition shown in JIS L1013 (chemical fiber filament yarn test method, 2010). Obtain from the strength at the point of 3% elongation.
- the strength divided by the fineness of the fiber is the stress per unit fineness at 3% elongation in the fiber tensile test.
- the stress per unit fineness at the time of 3% elongation in the fiber tensile test is a rising portion of the tensile strength-elongation curve, and is a parameter indicating the rigidity of the fiber.
- the ⁇ -crystal orientation parameter of the polyamide in the sheath is preferably 2.10 to 2.70, more preferably 2.20 to 2.60. It is generally known that an ⁇ crystal is a stable crystal form and is formed when a high stress is applied.
- the polyamide in the sheath is preferentially subjected to drawing during spinning and drawing between take-up rollers and drawing between take-off rollers, and ⁇ crystals that are stable crystal forms. Can be sufficiently present.
- the stretching force is concentrated on the polyamide in the sheath during melt spinning, the crystallization of the thermoplastic polymer having a high hygroscopic performance in the core is suppressed, and the hygroscopic performance of the core-sheath composite fiber can be further enhanced.
- the rigidity of the sheath portion is increased, and the tensile stress of the core-sheath composite fiber can be further increased.
- the ⁇ crystal orientation parameter of the polyamide of the sheath is 2.10 or more, the crystallization of the polyamide of the sheath advances, the tensile stress at 3% elongation as the core-sheath composite cross-section fiber becomes good, and the core Therefore, the crystallization of the thermoplastic polymer having high moisture absorption performance does not proceed and the moisture absorption / release performance is also improved.
- the ⁇ crystal orientation parameter is 2.70 or less, the crystallization of the polyamide in the sheath portion does not proceed, and the occurrence of yarn breakage and fluff generation in the high-order processing step can be suppressed, so that productivity is improved.
- the core-sheath composite cross-section fiber of the present invention preferably has a stress retention rate of 60% or more per unit fineness when stretched by 3% in a fiber tensile test before and after boiling water treatment.
- a stress retention rate 60% or more per unit fineness when stretched by 3% in a fiber tensile test before and after boiling water treatment.
- the fiber structure changes and the degree of orientation of the amorphous part change, so that the fiber shrinks and the stiffness of the fiber decreases. Therefore, by suppressing the shrinkage of the fiber as much as possible and maintaining the rigidity of the fiber as much as possible before and after boiling water, the deformation of the fiber in the dyeing process is suppressed, and the antifungal property is improved. Furthermore, deformation of the fiber is suppressed even during washing, and the anti-mold property is improved.
- thermoplastic polymer having high hygroscopic performance of the core part constituting the core-sheath composite cross-section fiber of the present invention is a polymer having low crystallinity and poor rigidity. Therefore, it is also a polymer whose shrinkage characteristics are increased by boiling water treatment and flexibility is easily increased. Therefore, the core-sheath composite cross-section fiber of the present invention has a rigid sheath portion by selecting a polyamide made of polyhexamethylene sebacamide having a relatively high rigidity and low shrinkage among polyamides as the sheath portion polymer.
- the shrinkage characteristics are suppressed and the rigidity is improved, so that the fender resistance and moisture absorption performance are improved. is there. More preferably, it is 70% or more.
- the core-sheath composite cross-section fiber of the present invention preferably has a tensile strength of 3.0 cN / dtex or more, more preferably 3.5 to 5.0 cN / dtex. By setting it as such a range, it becomes possible to provide a product excellent in practical durability.
- the core-sheath composite cross-section fiber of the present invention preferably has an elongation of 35% or more, more preferably 40 to 65%. By setting it as such a range, the passage property in high-order processes, such as weaving, knitting, and false twisting, becomes good.
- the core-sheath composite cross-section fiber of the present invention needs to have a function of adjusting the humidity in the clothes in order to obtain good comfort when worn.
- the temperature in the clothes represented by 30 ° C x 90% RH and the outside air temperature represented by 20 ° C x 65% RH when performing light to medium work or light to medium exercise ⁇ MR expressed by the difference in moisture absorption is used.
- a larger ⁇ MR corresponds to higher moisture absorption performance and better comfort when worn.
- the core-sheath composite cross-section fiber of the present invention preferably has a ⁇ MR of 5.0% or more. More preferably, it is 7.0% or more, More preferably, it is 10.0% or more. By setting it as this range, the stuffiness and stickiness at the time of wear can be suppressed, and the clothing excellent in comfort can be provided.
- the core-sheath composite cross-section fiber of the present invention preferably has a ⁇ MR retention of 90% or more and 100% or less after 20 washings. More preferably, it is 95% or more and 100% or less. By setting it as this range, since the washing durability which can endure actual use is obtained, the clothing which hold
- the core-sheath composite cross-section fiber of the present invention may be either a filament or a staple, and is selected depending on the application. Further, the total fineness, the number of filaments (for long fibers), and the length / crimp number (for short fibers) are not particularly limited, but considering the use as a long fiber material for clothing, the total fineness is 5 235 dtex and the number of filaments is preferably 1 to 144.
- the core-sheath composite cross-section fiber of the present invention can be obtained by techniques of melt spinning and composite spinning, and examples thereof are as follows.
- polyamide (sheath part) and thermoplastic polymer (core part) with high moisture absorption performance are melted separately, measured and transported with a gear pump, formed into a composite flow as it is, and discharged from a melt spinneret.
- the yarn is cooled to room temperature by a yarn cooling device such as the above, and is fed and converged by the oil supply device, entangled by the first fluid entanglement nozzle device, and drawn according to the ratio of the peripheral speed of the take-up roller and the drawing roller. Further, the yarn is heat-set by a drawing roller and wound by a winder (winding device).
- the core-sheath composite cross-section fiber of the present invention it is possible to preferably control by selecting a polyamide having an appropriate molecular structure, a suitable take-up speed, a fueling position, and a heat set temperature after stretching. These will be described in detail below.
- the polyamide used in the core-sheath composite cross-section fiber of the present invention is a polyamide having a dicarboxylic acid unit whose main component is a sebacic acid unit in the sheath, a so-called hydrocarbon is connected to the main chain via an amide bond. It is preferable to use a polymer comprising a high molecular weight substance.
- the core-sheath composite cross-section fiber excellent in the anti-mold property of the fabric during dyeing can be obtained.
- the ability to form hydrogen bonds between amide bonds here is determined by the degree of freedom of the polyamide molecular main chain, that is, the number of methylene groups per amide bond. Therefore, the core-sheath composite cross-section fiber excellent in the antifungal property of the fabric at the time of dyeing is obtained by selecting the polyamide of the range concerning a sheath part.
- the polyamide used for the core-sheath composite cross-section fiber of the present invention includes various additives such as matting agents, flame retardants, antioxidants, ultraviolet absorbers, infrared absorbers, crystal nucleating agents, fluorescent whitening agents, An antistatic agent, a hygroscopic polymer, carbon and the like may be copolymerized or mixed as necessary with a total additive content of 0.001 to 10% by weight.
- the relative viscosity of sulfuric acid of the polyamide chip used for the core-sheath composite cross-section fiber of the present invention is preferably 2.30 to 3.30. By setting it as such a range, it becomes possible to add suitable extending
- the relative viscosity of sulfuric acid of the polyamide in the sheath is 2.30 or more, a practical fiber strength and elongation can be obtained.
- the relative viscosity of sulfuric acid is 3.30 or less, the melt viscosity is suitable for spinning, so that the spinnability at the time of melt spinning is improved, and stable production without yarn breakage becomes possible. More preferably, it is 2.50 to 3.10.
- the ratio of the core part of the core-sheath composite cross-section fiber of the present invention is preferably 20 to 80 parts by weight with respect to 100 parts by weight of the composite fiber. More preferably, it is 30 to 70 parts by weight. By setting it as such a range, it becomes possible to add suitable extending
- polyamide having a dicarboxylic acid unit composed mainly of sebacic acid units used in the sheath part is 250 to 290 ° C. in the case of polyhexamethylene sebacamide chips, and has a high moisture absorption performance used in the core part.
- polymer in the case of “MH1657” manufactured by Arkema, it is preferably 220 to 260 ° C.
- the take-up speed is preferably 2500-3400 m / min.
- the orientation crystallization of the core polymer is appropriately advanced, and the crystallization of the core polymer is moderately suppressed, so that the stress per unit fineness at the time of 3% elongation and the boiling water shrinkage rate are reduced. It can be controlled within a preferable range, and is excellent in moisture absorption performance and antifungal properties. Furthermore, moisture absorption performance can be maintained even after washing.
- the orientation crystallization of the polyamide in the sheath proceeds when it is stretched by spinning tension, but the ⁇ -crystal orientation parameter of the polyamide in the sheath decreases because the mechanical stretch ratio decreases, and the sheath The rigidity of the polymer is reduced and it tends to become wrinkles. If it is less than 2500 m / min, the mechanical stretch ratio is increased, but since the stretching by spinning tension is insufficient, the ⁇ crystal orientation parameter of the polyamide in the sheath is lowered, the rigidity of the sheath polymer is lowered, and It becomes a fiber that tends to become. In addition, the oriented crystallization of the core polymer proceeds and the moisture absorption performance decreases. More preferably, it is 2700-3200 m / min.
- the refueling position from the bottom surface of the base is 800 to 1500 mm.
- the polymer discharged from the die is blown with cooling air by a cooling device to solidify the yarn.
- the polymer is stretched by spinning tension accompanied by an accompanying flow, and then between the take-up roller and the drawing roller. Mechanical stretching.
- the core-sheath composite cross-section fiber of the present invention has a high mechanical stretch ratio in order to enhance the orientation crystallization of the sheath polymer and increase the rigidity, and to suppress the crystallization of the core polymer and enhance the moisture absorption performance. The point is to reduce the spinning tension.
- the refueling position in such a range, the stress per unit fineness at the time of 3% elongation in the fiber tensile test can be increased, and a fiber excellent in antifungal properties and moisture absorption performance can be obtained.
- the lubrication position is less than 800 mm, the bend between the base and the lubrication position becomes large, and the thread is lubricated when the thread is not sufficiently solidified, resulting in frequent thread breaks and reduced operability. is there.
- the oil supply position exceeds 1500 mm, the spinning tension increases, so that the oriented crystallization of the core polymer progresses and the moisture absorption performance decreases, and the mechanical stretch ratio decreases and the rigidity of the sheath polymer decreases. For this reason, the fiber may easily become wrinkles. More preferably, it is 1000 to 1300 mm.
- the heat setting temperature after stretching is preferably 165 to 180 ° C. Due to the stretching between the rollers, the fibers having undergone oriented crystallization are further crystallized by the high-temperature heat setting treatment on the heating roller, and the fiber structure is stabilized.
- the boiling water shrinkage ratio depends on the shrinkage of the amorphous part of the fiber, that is, the ratio of the amorphous part.
- the heat setting temperature as used in the field of this invention shows the preset temperature of a heating roller.
- the polymer having high hygroscopic performance of the core part constituting the core-sheath composite cross-section fiber of the present invention has high amorphousness and high shrinkage, so that the boiling water shrinkage when fiberized with a single polymer is large. It is expected that. Therefore, the core-sheath composite cross-section fiber of the present invention uses a polyamide having a dicarboxylic acid unit mainly composed of a sebacic acid unit as a sheath polymer, which has relatively high rigidity and low shrinkage among polyamides.
- Stiffness is provided to the sheath part, the shrinkability of the core part is suppressed, and the fiber structure is stabilized by heat setting after stretching at such a temperature range, and the boiling water shrinkage rate is controlled to 6.0 to 12.0%. And a fiber having excellent antifungal properties can be obtained.
- the heat setting temperature is lower than 165 ° C.
- the crystallization of the polyamide in the sheath portion is insufficient, the fiber structure is not stable, and the fibers may be prone to wrinkles.
- the heat set temperature exceeds 180 ° C, fibers with excellent anti-mold properties can be obtained.
- contamination of the spinning oil decomposition products is promoted on the heating roller, resulting in frequent deterioration in quality and spun yarn breakage.
- the passability of the high-order machining process deteriorates. More preferably, it is 170 to 175 ° C.
- the core-sheath composite cross-section fiber of the present invention is preferably used for apparel because of its excellent moisture absorption performance, and the fabric form can be selected according to the purpose, such as woven fabric, knitted fabric, and non-woven fabric.
- the fabric having at least a part of the core-sheath composite fiber of the present invention can be used for clothing having excellent comfort by adjusting the mixing ratio of the composite fiber of the present invention so that ⁇ MR is 5.0% or more.
- ⁇ MR is 5.0% or more.
- clothing it can be set as various textile products, such as innerwear and sportswear.
- Sulfuric acid relative viscosity A polyamide chip sample was dissolved so as to be 1 g with respect to 100 ml of sulfuric acid having a concentration of 98% by weight, and the flow time (T1) at 25 ° C. was measured using an Ostwald viscometer. Subsequently, the flow-down time (T2) of only 98% by weight sulfuric acid was measured. The ratio of T1 to T2, that is, T1 / T2, was defined as sulfuric acid relative viscosity.
- Fineness Set a fiber sample on a 125 m / round measuring instrument, rotate it 200 times, create a looped skein, dry with a hot air dryer (105 ⁇ 2 ° C. ⁇ 60 minutes), and weigh A fine weight was calculated from a value obtained by weighing with a balance and multiplying by the official moisture content.
- the fiber sample was measured by laser Raman spectroscopy, and the intensity ratio (I1120) parallel in the parallel polarization of the Raman band derived from the ⁇ crystal of nylon observed near 1120 cm ⁇ 1 ; By taking a ratio of intensity ratio (I1120) perpendicular) in vertical polarization, it was set as a parameter for evaluating the degree of orientation.
- the scattering intensity of each polarization condition parallel / vertical was normalized based on the Raman band intensity of the CH bending band (near 1440 cm ⁇ 1 ) having a small anisotropy with respect to orientation.
- ⁇ crystal orientation parameter (I1120 / I1440) parallel / (I1120 / I1440) vertical
- the section thickness was 2.0 ⁇ m.
- the section sample was cut by being slightly tilted from the fiber axis so that the cut surface was elliptical, and a portion where the thickness of the elliptical short axis was constant was selected and measured. The measurement is performed in the microscopic mode, and the laser spot diameter at the sample position is 1 ⁇ m.
- the orientation of the core and sheath layer center was analyzed, and the orientation was measured under polarization conditions.
- the degree of orientation was evaluated from the ratio of the Raman band intensities obtained when the polarization direction coincided with the fiber axis and the perpendicular condition when the direction was perpendicular. Each measurement point was measured three times, and the average value was used. Detailed conditions are shown below.
- Laser Raman spectroscopy system T-64000 (Jobin Yvon / Ehime Bussan) Condition: Measurement mode; Microscopic Raman Objective lens: x100 Beam diameter: 1 ⁇ m Light source: Ar + laser / 514.5nm Laser power: 50mW Diffraction grating: Single 600gr / mm Slit: 100 ⁇ m Detector: CCD / Jobin Yvon 1024 ⁇ 256.
- the core-sheath composite cross-section fiber of the present invention is used for warp and weft, and the warp density is set to 188 yarns / 2.54 cm and the weft density is 155 yarns / 2.54 cm. Weaved with tissue.
- the obtained green ground was scoured with a solution containing 2 g of caustic soda (NaOH) per liter using an open soaper, dried at 120 ° C. with a cylinder dryer, and then preset at 170 ° C. Thereafter, the temperature was raised to 120 ° C. at a rate of 2.0 ° C./min with a pressure-resistant drum type dyeing machine, and dyeing was performed for 60 minutes at a set temperature of 120 ° C. After dyeing, the fabric was washed with running water for 20 minutes, dehydrated and dried to obtain a woven fabric having a warp density of 200 / 2.54 cm and a weft density of 160 / 2.54 cm.
- CaOH caustic soda
- MR65 [(W65 ⁇ W0) / W0] ⁇ 100%
- MR90 [(W90 ⁇ W0) / W0] ⁇ 100%
- ⁇ MR MR90 ⁇ MR65
- the rotation speed of the gear pump was selected so that the total fineness of the obtained core-sheath composite yarn was 56 dtex, and the discharge rate was 22 g / min.
- the yarn is cooled and solidified by the yarn cooling device, and the non-hydrous oil agent is supplied at the oil supply position 1000 mm from the lower surface of the base by the oil supply device.
- the roller is stretched at a peripheral speed of 2800 m / min, the stretching ratio between the take-off roller and the stretching roller is 1.50 times, the setting temperature of the stretching roller is 170 ° C., heat setting is performed, and the winding speed is 4000 m / min.
- the core-sheath composite cross-section fiber of 56 dtex24 filament was obtained.
- Example 2 A 56 dtex 24 filament core-sheath composite cross-section fiber was obtained in the same manner as in Example 1 except that the heat setting temperature of the heating roller was 180 ° C.
- Example 3 A 56 dtex 24 filament core-sheath composite cross-section fiber was obtained in the same manner as in Example 1 except that the heat setting temperature of the heating roller was 165 ° C.
- Example 4 A 56 dtex 24 filament core-sheath composite cross-section fiber was obtained in the same manner as in Example 1 except that the oil supply position was 1500 mm from the lower surface of the die and the winding speed was 3900 m / min.
- Example 5 A 56 dtex 24 filament core-sheath composite cross-section fiber was obtained in the same manner as in Example 1 except that the oil supply position was 800 mm from the lower surface of the die.
- Example 6 The core sheath of 56 dtex 24 filament was obtained in the same manner as in Example 1 except that the oiling position was 1500 mm from the bottom of the base, the draw ratio between the take-up roller and the draw roller was 1.45 times, and the take-up speed was 3900 m / min. A composite cross-section fiber was obtained.
- Example 7 The core sheath of 56 dtex 24 filament was obtained in the same manner as in Example 1 except that the oiling position was 800 mm from the bottom of the base, the draw ratio between the take-up roller and the draw roller was 1.55, and the take-up speed was 4100 m / min. A composite cross-section fiber was obtained.
- Example 8 Example 1 except that the winding speed of the take-up roller as the first roll was 2500 m / min, the draw ratio between the take-up roller and the drawing roller was 1.65 times, and the take-up speed was 3900 m / min.
- the core-sheath composite cross-section fiber of 56 dtex24 filament was obtained by the method.
- Example 9 Example 1 except that the winding speed of the take-up roller as the first roll was 3400 m / min, the draw ratio between the take-up roller and the drawing roller was 1.20 times, and the take-up speed was 3900 m / min.
- the core-sheath composite cross-section fiber of 56 dtex24 filament was obtained by the method.
- Example 1 A core-sheath composite cross-section yarn of 56 dtex 24 filament was obtained in the same manner as in Example 1 except that the heat setting temperature of the heating roller was 190 ° C.
- the moisture absorption performance and anti-mold properties are excellent, and furthermore, the moisture absorption performance is maintained even after washing, but stains such as decomposition products of spinning oil on the heating roller. Was promoted, yarn breakage frequently occurred in the high-order processing step, and the process passability was poor.
- Example 2 A core-sheath composite cross-section fiber of 56 dtex 24 filament was obtained in the same manner as in Example 1 except that the set temperature of the drawing roller was 150 ° C.
- Example 3 The core sheath of 56 dtex 24 filament was obtained in the same manner as in Example 1 except that the oiling position was 1800 mm from the bottom of the base, the draw ratio between the take-up roller and the draw roller was 1.30 times, and the take-up speed was 3500 m / min. A composite cross-section fiber was obtained.
- Example 4 (Comparative Example 4) Example 1 except that the winding speed of the take-up roller as the first roll was 2200 m / min, the draw ratio between the take-up roller and the drawing roller was 1.80 times, and the take-up speed was 3800 m / min.
- the core-sheath composite cross-section fiber of 56 dtex24 filament was obtained by the method.
- Example 5 (Comparative Example 5) Example 1 except that the winding speed of the take-up roller as the first roll was 3700 m / min, the draw ratio between the take-up roller and the drawing roller was 1.05 times, and the take-up speed was 3700 m / min.
- the core-sheath composite cross-section fiber of 56 dtex24 filament was obtained by the method.
- Example 6 A core-sheath composite cross-section fiber of 56 dtex24 filaments was collected in the same manner as in Example 1 except that nylon 6 having a relative viscosity of sulfuric acid of 2.40 was used as the sheath and the heat setting temperature of the heating roller was 150 ° C.
- the rigidity of the sheath nylon 6 is low, the balance with the shrinkage characteristics of the core polyetheresteramide copolymer is lost, and the stress per unit fineness at 3% elongation was as low as 0.53 cN / dtex.
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Abstract
Description
MR90(%)=[(W90-W0)/W0]×100
ΔMR(%)=MR90-MR65 。
ポリアミドチップ試料を濃度98重量%の硫酸100mlに対して1gになるように溶解し、オストワルド型粘度計を用いて25℃での流下時間(T1)を測定した。引き続き、濃度98重量%の硫酸のみの流下時間(T2)を測定した。T2に対するT1の比、すなわちT1/T2を硫酸相対粘度とした。
ポリエーテルエステルアミド共重合体チップ試料をオルトクロロフェノール100mlに対して1gになるように溶解し、オストワルド型粘度計を用いて25℃での流下時間(T1)を測定した。引き続き、オルトクロロフェノールのみの流下時間(T2)を測定した。T2に対するT1の比、すなわちT1/T2をオルトクロロフェノール相対粘度とした。
1.125m/周の検尺器に繊維試料をセットし、200回転させて、ループ状かせを作成し、熱風乾燥機にて乾燥後(105±2℃×60分)、秤量天秤にてかせ重量を量り、公定水分率を乗じた値から正量繊度を算出した。
繊維試料を、オリエンテック(株)製“TENSILON”(登録商標)、UCT-100でJIS L1013(化学繊維フィラメント糸試験方法、2010年)に示される定速伸長条件で測定した。伸度は、引張強さ-伸び曲線における最大強力を示した点の伸びから求めた。また、強度は、最大強力を正量繊度で除した値を強度とした。測定は10回行い、平均値を強度及び伸度とした。
前記(4)項記載の方法にて繊維試料の引張試験を行い、引張強さ-伸び曲線における試料が3%の伸びを示した点での強力を求め3%伸長時応力とした。測定は10回行い、平均値を3%伸長時応力とした。
繊維試料を、レーザーラマン分光法にて測定し、1120cm-1付近に認められるナイロンのα結晶に由来するラマンバンドの平行偏光での強度比(I1120)平行)と、垂直偏光での強度比(I1120)垂直)の比をとることで、配向度評価のパラメーターとした。また、配向に対する異方性が小さいCH変角バンド(1440cm-1付近)のラマンバンド強度を基準とし、各偏光条件(平行/垂直)の散乱強度を規格化した。
なお、配向測定用の繊維試料は、樹脂包埋後(ビスフェノール系エポキシ樹脂、24時間硬化)、ミクロトームにより切片化した。切片厚みは2.0μmとした。切片試料は切断面が楕円形になるように繊維軸から僅かに傾けて切断し、楕円形の短軸の厚みが一定厚になる箇所を選択して測定した。測定は顕微モードで行い、試料位置におけるレーザーのスポット径は1μmである。芯、鞘層中心部の配向性解析を行い、配向の測定は偏光条件下で行った。偏光方向が繊維軸と一致する場合を平行条件、直行する場合を垂直条件として、それぞれ得られるラマンバンド強度の比から配向の程度を評価した。なお、各測定点について3回測定を行い、その平均値を用いた。詳細条件を以下に示す。
装置:T-64000(Jobin Yvon/愛宕物産)
条件:測定モード;顕微ラマン
対物レンズ:×100
ビーム径:1μm
光源:Ar+レーザー/514.5nm
レーザーパワー:50mW
回折格子:Single 600gr/mm
スリット:100μm
検出器:CCD/Jobin Yvon 1024×256 。
JIS L1013:2010 8.18.1(B法)に準じて、測定した。
本発明における芯鞘複合断面繊維を経糸、緯糸に用い、経密度188本/2.54cm、緯密度155本/2.54cmに設定し、ウォータージェットルーム織機にて、平組織で製織した。
上記(8)で得られた織物を、JIS L1059-2(繊維製品の防皺性試験方法-第2部:しわ付け後の外観評価(リンクル法)、2009年)の9項記載の方法にて行い、5級(最も滑らかな外観)から1級(最もしわの多い外観)で判定した。3級以上の場合、防皺性に優れると判断した。
上記(8)で得られた織物を、秤量瓶に1~2g程度はかり取り、110℃に2時間保ち乾燥させ重量を測定し(W0)、次に対象物質を20℃、相対湿度65%に24時間保持した後重量を測定する(W65)。そして、これを30℃、相対湿度90%に24時間保持した後重量を測定する(W90)。そして、以下の式にしたがい計算した。
MR90=[(W90-W0)/W0]×100% ・・・・・ (2)
ΔMR=MR90-MR65 ・・・・・・・・・・・・ (3) 。
上記(8)で得られた織物を、JIS L0217(1995)付表1記載の番号103記載の方法にて、繰り返し20回洗濯を実施した後、上記(10)記載の△MRを測定し算出した。
洗濯前後のΔMRの変化指標として、洗濯後のΔMR保持率を下記式にて算出した。
ΔMR保持率が90%以上の場合は、洗濯耐久性有りと判断した。
本発明の芯鞘複合断面繊維を用いて、ウォータージェットルーム織機にて、織機回転数750rpm、緯糸長1620mmで平織物を10疋(1000m/疋) 製織した際の織機の糸切れによる停台回数を評価し、糸切れが2回以下の場合、良好な工程通過性であると判断した。
オルトクロロフェノール相対粘度が1.69であるポリエーテルエステルアミド共重合体(アルケマ社製、MH1657(チップΔMR:18.9))を芯部とし、硫酸相対粘度が2.72であるナイロン610を鞘部とし、それぞれ270℃にて溶融し、同心円芯鞘複合用口金から芯/鞘比率(重量部)=50/50になるように紡糸した。
加熱ローラーの熱セット温度を180℃とした以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
加熱ローラーの熱セット温度を165℃とした以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
給油位置を口金下面から1500mm、巻き取り速度を3900m/minで巻き取った以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
給油位置を口金下面から800mmとした以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
給油位置を口金下面から1500mm、引き取りローラーと延伸ローラー間の延伸倍率を1.45倍、巻き取り速度を3900m/minで巻き取った以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
給油位置を口金下面から800mm、引き取りローラーと延伸ローラー間の延伸倍率を1.55倍、巻き取り速度を4100m/minで巻き取った以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
第1ロールである引き取りローラーの周速度を2500m/min、引き取りローラー-延伸ローラー間の延伸倍率を1.65倍、巻き取り速度を3900m/minで巻き取った以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
第1ロールである引き取りローラーの周速度を3400m/min、引き取りローラー-延伸ローラー間の延伸倍率を1.20倍、巻き取り速度を3900m/minで巻き取った以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
加熱ローラーの熱セット温度を190℃とした以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面糸を得た。
延伸ローラーの設定温度を150℃とした以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
給油位置を口金下面から1800mm、引き取りローラーと延伸ローラー間の延伸倍率を1.30倍、巻き取り速度を3500m/minで巻き取った以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
第1ロールである引き取りローラーの周速度を2200m/min、引き取りローラー-延伸ローラー間の延伸倍率を1.80倍、巻き取り速度を3800m/minで巻き取った以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
第1ロールである引き取りローラーの周速度を3700m/min、引き取りローラー-延伸ローラー間の延伸倍率を1.05倍、巻き取り速度を3700m/minで巻き取った以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を得た。
硫酸相対粘度が2.40であるナイロン6を鞘部とし、加熱ローラーの熱セット温度を150℃とした以外は、実施例1と同様の方法で56dtex24フィラメントの芯鞘複合断面繊維を採取した。
Claims (5)
- 芯部ポリマーが熱可塑性ポリマーであり、鞘部ポリマーがセバシン酸単位を主成分とするジカルボン酸単位を有するポリアミドであり、沸騰水収縮率が6.0~12.0%、繊維の引張試験における3%伸長時の単位繊度あたりの応力が0.60cN/dtex以上であることを特徴とする芯鞘複合断面繊維。
- 鞘部のα結晶配向パラメーターが2.10~2.70であることを特徴とする請求項1に記載の芯鞘複合断面繊維。
- 沸騰水処理前後での繊維の引張試験における3%伸長時の単位繊度あたりの応力保持率が60%以上であることを特徴とする請求項1または2に記載の芯鞘複合断面繊維。
- 請求項1~3のいずれかに記載の芯鞘複合断面繊維を少なくとも一部に有する布帛。
- 請求項1~3のいずれかに記載の芯鞘複合断面繊維を少なくとも一部に有する繊維製品。
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JP2017501741A JP6213693B2 (ja) | 2015-11-10 | 2016-11-01 | 吸湿性、防皺性に優れた芯鞘複合断面繊維 |
AU2016351997A AU2016351997B2 (en) | 2015-11-10 | 2016-11-01 | Core-sheath composite cross-section fiber having excellent moisture absorbency and wrinkle prevention |
CN201680061247.1A CN108138378B (zh) | 2015-11-10 | 2016-11-01 | 吸湿性、防皱性优异的芯鞘复合截面纤维 |
US15/774,021 US20190024264A1 (en) | 2015-11-10 | 2016-11-01 | Core-sheath composite cross-section fiber having excellent moisture absorbency and wrinkle prevention |
EP16864073.8A EP3375918B1 (en) | 2015-11-10 | 2016-11-01 | Core-sheath composite cross-section fiber having excellent moisture absorbency and wrinkle prevention |
KR1020187006770A KR102575877B1 (ko) | 2015-11-10 | 2016-11-01 | 흡습성, 주름방지성이 우수한 심초 복합 단면섬유 |
CA3003107A CA3003107A1 (en) | 2015-11-10 | 2016-11-01 | Core-sheath composite cross-section fiber having excellent moisture absorbency and wrinkle prevention |
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- 2016-11-01 CA CA3003107A patent/CA3003107A1/en not_active Abandoned
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JPS5048216A (ja) * | 1973-09-04 | 1975-04-30 | ||
JP2001159030A (ja) * | 1999-11-29 | 2001-06-12 | Toray Ind Inc | 複合ポリアミド繊維 |
JP2007169849A (ja) * | 2005-12-26 | 2007-07-05 | Toray Ind Inc | 芯鞘型複合繊維、捲縮糸、およびそれらを用いてなる繊維構造体 |
WO2015129735A1 (ja) * | 2014-02-26 | 2015-09-03 | 東レ株式会社 | ポリアミド捲縮加工糸およびそれを用いた織編物 |
WO2016190102A1 (ja) * | 2015-05-22 | 2016-12-01 | 東レ株式会社 | 吸湿性芯鞘複合糸およびその製造方法 |
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WO2022065121A1 (ja) * | 2020-09-24 | 2022-03-31 | 東レ株式会社 | ポリアミド芯鞘複合繊維及び布帛 |
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AU2016351997A1 (en) | 2018-05-17 |
JPWO2017082110A1 (ja) | 2017-11-16 |
JP6213693B2 (ja) | 2017-10-18 |
KR20180079288A (ko) | 2018-07-10 |
TW201734273A (zh) | 2017-10-01 |
CA3003107A1 (en) | 2017-05-18 |
US20190024264A1 (en) | 2019-01-24 |
EP3375918A1 (en) | 2018-09-19 |
KR102575877B1 (ko) | 2023-09-07 |
AU2016351997B2 (en) | 2020-07-30 |
CN108138378B (zh) | 2020-07-28 |
EP3375918A4 (en) | 2019-06-26 |
CN108138378A (zh) | 2018-06-08 |
EP3375918B1 (en) | 2022-05-11 |
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