WO2018147251A1 - 熱接着性芯鞘型複合繊維およびトリコット編み地 - Google Patents
熱接着性芯鞘型複合繊維およびトリコット編み地 Download PDFInfo
- Publication number
- WO2018147251A1 WO2018147251A1 PCT/JP2018/003927 JP2018003927W WO2018147251A1 WO 2018147251 A1 WO2018147251 A1 WO 2018147251A1 JP 2018003927 W JP2018003927 W JP 2018003927W WO 2018147251 A1 WO2018147251 A1 WO 2018147251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- sheath
- polyester
- melting point
- composite fiber
- 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.)
- Ceased
Links
Images
Classifications
-
- 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
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
-
- 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
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/06—Patterned fabrics or articles
- D04B21/08—Patterned fabrics or articles characterised by thread material
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
- D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
Definitions
- the present invention has less fuzz generation in high-order processes, is excellent in high-order passage even in applications with high quality requirements such as tricot use, and the woven or knitted fabric after heat bonding is excellent in strength, dimensional stability, and durability.
- the present invention relates to a heat-adhesive core-sheath composite fiber excellent in quality as a flow passage material for a liquid filtration membrane.
- Polyester fibers are suitable as raw materials for clothing, industrial materials, etc. due to their excellent dimensional stability, weather resistance, mechanical properties, durability, and productivity that can be mass-produced relatively inexpensively. Used in applications.
- polyester fiber having thermal adhesiveness a yarn composed of two or more kinds of polyesters having different melting points or softening points is suitable.
- mode for example, mixed yarn made of filament yarn, core-sheath type or side-by-side type composite fiber can be mentioned.
- a composite fiber composed of polymers having different melting points is superior in quality after thermal bonding.
- a core-sheath composite yarn excellent in quality such as productivity of raw yarn and surface smoothness of the fabric after heat treatment
- the sheath component is composed of a component having a melting point or a softening point lower than that of the core component.
- Sheath-type composite fibers are actively used.
- a core-sheath type composite fiber having a polyester whose main repeating unit is ethylene terephthalate as a core part and a polymer having a softening temperature of 130 to 200 ° C. as a sheath part has been proposed.
- the core-sheath-type conjugate fiber it has a predetermined strength and elongation characteristic, does not cause misalignment due to displacement at the thermal bonding intersection, and does not generate wrinkles. Is done.
- the polymer in the sheath portion has a low crystallinity having no clear melting point, as exemplified by polyester copolymerized with isophthalic acid. For this reason, when the woven or knitted fabric made of the core-sheath type composite fiber is heat-bonded, unevenness occurs in the bonding between the composite fibers, resulting in dimensional stability, variation in the strength and elongation of the fabric, and the like. There was a problem of poor quality when used as a material.
- Patent Document 2 a core-sheath type composite fiber in which 90 mol% or more of repeating units have a core made of a polymer composed of ethylene terephthalate and 60 to 90 mol% of repeating units have a copolymer polybutylene terephthalate made of butylene terephthalate as a sheath.
- Patent Document 2 a core-sheath type composite fiber in which 90 mol% or more of repeating units have a core made of a polymer composed of ethylene terephthalate and 60 to 90 mol% of repeating units have a copolymer polybutylene terephthalate made of butylene terephthalate as a sheath.
- the sheath component is imparted with appropriate crystallinity, and since the fiber physical properties such as the boiling water shrinkage rate and the peak temperature of the heat shrinkage stress are good, the heat of good quality. It is said that a bonded knitted or knitted product can be obtained.
- the present invention eliminates the problems of the prior art, has less fuzz generation in high-order processes, is excellent in high-order passage even in applications with high quality requirements such as tricot use, and the woven or knitted fabric after heat bonding has strength, dimensions Provided is a heat-adhesive core-sheath composite fiber that is excellent in stability and durability and excellent in quality as a flow passage material for a liquid filtration membrane.
- a core-sheath type composite fiber having a polyester having a melting point of 250 ° C. or higher as a core, a melting point of 215 ° C. or higher and a polyester having a melting point 20 to 35 ° C. lower than that of the polyester constituting the core.
- the present invention there is little fluffing in a high-order process, excellent high-order passability even in applications with high quality requirements such as tricot use, and the woven or knitted fabric after heat bonding has strength, dimensional stability, and durability. It is possible to provide a heat-bondable core-sheath composite fiber that is excellent and excellent in quality as a flow passage material for a liquid filtration membrane.
- FIG. 1 shows an example of a single yarn cross-sectional shape of a heat-adhesive core-sheath composite fiber preferably used in the present invention.
- FIG. 2 is an example of a single yarn cross-sectional shape of the thermoadhesive core-sheath conjugate fiber of the present invention, and is a view for explaining the cross-sectional eccentricity.
- the core-sheath type composite fiber of the present invention is composed of a polyester having a melting point of the core component of 250 ° C. or higher, a polyester having a melting point of 215 ° C. or higher, and 20 to 35 ° C. lower than the melting point of the polyester constituting the core.
- the spinning temperature can be increased to such an extent that the strength and elongation characteristics of the polyester can be maximized, and the strength and durability when used as a fabric are excellent.
- the melting point of the core component polyester is preferably 270 ° C. or less from the practical upper limit. It is preferable that the melting point of the core component polyester is 270 ° C. or lower because it is not necessary to perform spinning at an extremely high temperature and spinning can be performed using a general-purpose melt spinning apparatus. More preferably, it is 253 degreeC or more and 260 degrees C or less.
- the melting point of the sheath component polyester is 215 ° C or higher, preferably 250 ° C or lower. It is preferable that the melting point of the sheath component polyester is 250 ° C. or lower because a general-purpose apparatus can be used when the fabric is thermally bonded, and fuming caused by the oil component in the thermal bonding treatment can be suppressed. More preferably, it is 220 degreeC or more and 235 degreeC or less.
- the thermal bonding temperature of the fabric can be made sufficiently lower than the melting point of the core component polyester, It can be a durable fabric. Further, by setting the difference in melting point to 35 ° C.
- the spinning temperature can be set to a temperature that maximizes the strength of the core component polyester and suppresses the thermal degradation of the sheath component polyester as much as possible. This is a composite fiber that is superior in quality and excellent in quality with little raw yarn fluff.
- the difference in melting point between the sheath component polyester and the core component polyester is preferably 23 ° C. or higher and 30 ° C. or lower.
- the softening temperature of the core component polyester is preferably 245 ° C. or higher, and the softening temperature of the sheath component polyester is preferably 205 ° C. or higher. It is preferable that the softening temperature of the core component polyester is 245 ° C. or higher because when the fabric is heat-bonded at the melting point or higher of the sheath component polyester, the dimensional change is small and the fabric form is stable.
- the softening temperature of the core component polyester is more preferably 250 ° C. or higher.
- the upper limit temperature of the softening temperature of the core component polyester is practically 270 ° C.
- the softening temperature of the sheath component polyester is 205 ° C. or higher because there is no fusion to the heater during heat setting in the processing step, and the high-speed passage is stable.
- the softening temperature of the sheath component polyester is more preferably 215 ° C. or higher.
- any polyester can be selected as long as the melting point is within the above range, but polyethylene terephthalate (hereinafter referred to as PET) is preferable from the viewpoint of dimensional stability and strong elongation characteristics.
- PET is a polyester obtained using terephthalic acid as the main acid component and ethylene glycol as the main glycol component.
- the core component polyester may appropriately include a copolymer component as long as the melting point is within the above-described range.
- Examples of the copolymerizable compound include PET, dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, 5-sodium sulfoisophthalic acid, ethylene glycol, diethylene glycol, 2 , 2-dimethyl-1,3-propanediol, butanediol, neopentyl glycol, cyclohexanedimethanol, polyethylene glycol, polypropylene glycol, bisphenol A ethylene oxide adduct, and the like.
- dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, 5-sodium sulfoisophthalic acid, ethylene glycol, diethylene glycol, 2 , 2-dimethyl-1,3-propanediol
- the PET is a homo-PET comprising 100% repeating units of ethylene terephthalate. If necessary, inorganic fine particles such as titanium dioxide as a matting agent and silica fine particles as a lubricant may be added.
- any polyester can be selected as long as the melting point is within the above-mentioned range, but in addition to PET, polytrimethylene terephthalate and polybutylene terephthalate are preferable.
- PET polytrimethylene terephthalate
- PET polybutylene terephthalate
- an arbitrary copolymer component can be added at an arbitrary ratio as long as the melting point is within the above-mentioned range.
- the copolymer PET is composed of 70% by mole or more of ethylene terephthalate repeating units, Moderate crystallinity can be imparted, and spinning operability is stabilized.
- a copolymerized PET composed of ethylene terephthalate repeating units. Even when a polymer other than PET is used as the sheath component polyester, a copolymer component can be appropriately added within a range that does not impair the raw yarn productivity and the quality of the fabric after the thermal bonding treatment.
- a copolymerization component arbitrary components, such as the above-mentioned copolymerization component, can be copolymerized.
- inorganic fine particles such as titanium dioxide as a matting agent and silica fine particles as a lubricant may be added as needed, regardless of the polymer species selected.
- the intrinsic viscosity (hereinafter referred to as IV) of the composite fiber is preferably 0.55 to 0.75.
- IV the intrinsic viscosity
- the IV is 0.55 or more, the degree of polymerization is not too low, and it is preferable because the toughness sufficient for the composite fiber to withstand practical use can be achieved.
- the IV is 0.75 or less, the IV is not too high at the time of spinning, there is no need to perform extreme high temperature spinning, the increase in the amount of COOH during melt spinning can be suppressed, and melt fracture may occur. This is preferable because a uniform composite fiber is obtained and the toughness is not lowered. More preferably, IV is in the range of 0.60 to 0.70.
- FIG. 1 is a schematic cross-sectional view of a core-sheath type composite fiber of the present invention, which shows a core-sheath type composite fiber 10 in which a core component 1 is surrounded by a sheath component 2.
- the cross-sectional shape of the composite fiber is not particularly limited as long as the high melting point component is disposed in the core portion and the low melting point component is disposed in the sheath shape covering the core portion, but the sheath component completely covers the core component, and the core component It is preferable that there is no exposure.
- the eccentricity of the center of gravity of the core component with respect to the center of gravity of the entire composite fiber is preferably 5% or less in the cross section of the composite fiber.
- An eccentricity of 5% or less is preferable because a coil-like crimp does not appear even if the combination of the core component and the sheath component is a combination that causes a shrinkage difference, and the fabric quality is excellent. More preferably, the eccentricity is 1% or less.
- the cross-sectional outer peripheral shape of the composite fiber is preferably a substantially circular shape having a flatness expressed by A / B of 1.1 or less, where A is the major axis and B is the minor axis.
- A is the major axis
- B is the minor axis.
- the content of the inorganic particles contained in the core component is preferably 3.0% by weight or less because the toughness is improved, and more preferably 0.5% by weight or less.
- the content of the inorganic fine particles contained in the sheath component is preferably 0.05% by weight or more because process passability is improved. More preferably, the content of the inorganic fine particles contained in the sheath component is 0.05% by weight or more and 0.5% by weight or less without excessive wear of the guide during the process, when used as a flow path material, It is preferable because unnecessary inorganic particles are not dropped off.
- the inorganic fine particles are preferably titanium oxide from the viewpoint of process passability as a composite fiber.
- the total fineness is preferably 30 dtex or more. By setting the total fineness to 30 dtex or more, sufficient strength and rigidity can be ensured even by heat bonding treatment, and when used as a flow path material, a sufficient amount of permeate flows even if water pressure acts. Can be secured.
- the total fineness is preferably 90 dtex or less, more preferably 40 dtex or more. By setting the total fineness to 90 dtex or less, the fabric can be thinned, and when used as a flow path material, the number of layers per unit formed by bonding the filtration membrane and the flow path material can be increased.
- the single yarn fineness of the composite fiber is preferably 3.0 dtex or less.
- the single yarn fineness is preferably 0.7 dtex or more, and more preferably 1.5 dtex or more and 2.5 dtex or less. By setting the single yarn fineness to 0.7 dtex or more, there is little yarn unevenness and raw yarn fluff, and stable yarn production is possible. It is preferable because an appropriate rigidity can be obtained.
- the strength of the composite fiber is 3.8 cN / dtex or more, and the elongation is 35% or more.
- the strength is high when used as a fabric, and the durability when used as a flow path material is excellent.
- the practical upper limit is a strength of 7.0 cN / dtex.
- the elongation is 35 to 50%. A woven or knitted fabric obtained by setting the elongation to 50% or less is preferable because of excellent dimensional stability.
- the Worcester unevenness U% which is an index of thickness unevenness in the fiber longitudinal direction of the composite fiber, is 1.4% or less.
- Wooster spots U% of 1.4% or less is preferable because the surface of the fabric after thermal bonding becomes smooth and a uniform channel can be formed when used as a channel material. More preferably, the Wooster plaque U% is 1.0% or less.
- the dry heat shrinkage of the composite fiber is preferably 20% or less. It is preferable to set the dry heat shrinkage rate to 20% or less because dimensional changes due to thermal bonding treatment can be suppressed.
- the practical lower limit is a dry heat shrinkage of 2.0%.
- a preferred yarn production method for achieving the object of the present invention will be described.
- the die used for the melt spinning method of the heat-adhesive core-sheath composite fiber of the present invention an existing composite spinning die can be used.
- Examples of the melting method include a method using a pressure melter and a method using an extruder, but melting using an extruder is preferable from the viewpoint of efficiency and suppression of decomposition.
- the melting temperature is preferably set to 10 to 40 ° C. higher than the melting point of the polymer used.
- a preferable spinning temperature is 280 to 295 ° C. More preferably, the spinning temperature is 285 ° C to 293 ° C. By adopting such a spinning temperature, it is possible to obtain a composite fiber having high toughness and good spinning properties.
- a heater may be provided under the base.
- both the core component and sheath component are melted and kneaded separately, precisely discharged and weighed through a heating zone, passed through a filtration layer supplemented with foreign matter, and discharged and formed into a core and sheath using a composite die. ⁇ Cooled.
- the polymer residence time which is the transit time from melting to ejection, is within 30 minutes, thermal degradation of the polymer can be reduced, IV reduction can be suppressed, and yarn toughness reduction can be prevented.
- the polymer residence time is 20 minutes or less.
- the die surface temperature is preferably 270 ° C. or higher and 290 ° C. or lower.
- the base surface temperature is preferably 270 ° C. or higher, the core component characteristics can be maximized, and a yarn excellent in high elongation can be obtained.
- the die surface temperature is preferably 290 ° C. or less, an increase in yarn breakage due to deposition of polymer hydrolyzate directly under the die is suppressed, and this is preferable because it is excellent in raw yarn productivity.
- the core-sheath type composite fiber of the present invention is not only a two-step method in which the discharged polymer is once wound up as an undrawn yarn and then drawn, as well as a direct spinning drawing method or a high-speed spinning method in which spinning and drawing steps are continuously performed. It can be produced by any one-step method.
- the stretching temperature is preferably 60 ° C. or higher and 100 ° C. or lower, which is near the glass transition temperature of the undrawn yarn. Uniform stretching can be achieved by setting the stretching temperature to 60 ° C. or higher, and productivity deterioration due to fusion to a stretching roll or spontaneous elongation of fibers can be prevented by setting the stretching temperature to 100 ° C. or lower. More preferably, the stretching temperature is 75 ° C. or higher and 95 ° C. or lower.
- heat-set at a temperature at which the crystal speed of the undrawn yarn is maximized, and it is preferably set to 110 ° C. or higher and 180 ° C. or lower.
- Heat setting at 110 ° C. or higher is preferable because it can not only promote fiber crystallization and increase strength, but also stabilize various yarn properties such as shrinkage stress and dry heat shrinkage.
- Intrinsic viscosity (IV) ⁇ r of the definition formula is obtained by dissolving 0.8 g of a sample in 10 mL of O-chlorophenol (OCP) having a purity of 98% or more, and obtaining the relative viscosity ⁇ r using an Ostwald viscometer at a temperature of 25 ° C. according to the following formula: Intrinsic viscosity (IV) was calculated.
- OCP O-chlorophenol
- IV 0.0242 ⁇ r + 0.2634 [ ⁇ : viscosity of polymer solution, ⁇ 0: OCP viscosity, t: solution drop time (second), d: solution density (g / cm 3 ), t0: OCP drop time (second), d0: OCP Density (g / cm 3 )].
- the amount of permeated liquid after 5 days was measured, and the amount of fresh water produced per day was calculated. Based on the results of the test, the following evaluation points were used. 3 points: Magnesium sulfate salt removal rate of 99.8% or more and water production amount of 45 m 3 / day or more 2 points: Magnesium sulfate salt removal rate of 99.8% or more and water production amount of 40 m 3 / day or more of 45 m 3 / Day or the removal rate of magnesium sulfate salt is 99.0% or more and less than 99.8% and the amount of water produced is 45 m 3 / day or more 1 point: The removal rate of magnesium sulfate salt is 99.0% or more and 99.8% %, And the amount of water produced is 40 m 3 / day or more and less than 45 m 3 / day 0 point: The removal rate of magnesium sulfate salt is less than 99.0%, or the amount of water produced is less than 40 m 3 / day.
- Example 1 A homo-PET polymer of IV0.67 containing no titanium oxide (high melting point component, melting point 255 ° C.) and isophthalic acid and bisphenol A ethylene oxide adduct as the copolymer component are each 7.1 mol% based on the total acid component, A copolymerized PET polymer (low melting point component, melting point 230 ° C.) having a titanium oxide content of 0.05 wt% and IV 0.65 copolymerized with 4.4 mol% was prepared, and the high melting point component was 285 ° C. with an extruder.
- the low melting point component was melted at 260 ° C with an extruder, the spinning temperature was set at 290 ° C, weighed with a metering pump, filtered in a pack, and then with a nozzle nozzle as shown in FIG. It was discharged into a core-sheath composite type having a composite area ratio of 65:35 so that the cross-sectional shape of the concentric circular core-sheath was as follows (the cross-sectional eccentricity was 0% and the cross-sectional flatness was 1.0). At this time, it arrange
- a direct spinning method (DSD) is used which is consistently performed from drawing to winding, and the discharged polymer is set at a speed of 1728 m / min and a surface temperature of 85 ° C. through the cooling part and the oiling part. Then, the film was taken up by a take-up roll (first HR) and continuously drawn up to a heat treatment roll (second HR) set to 128 ° C. at 4489 m / min without being wound up, and stretched 2.6 times.
- first HR take-up roll
- second HR heat treatment roll
- the tension of the stretched and heat-treated yarns is adjusted with godet rollers (3rd GR and 4GR) set to speeds of 4549 m / min and 4584 m / min, respectively, and the tension is 0.20 cN / dtex at a speed of 4500 m / min.
- the cheese-like package was wound up to obtain a core-sheath type composite fiber of 56 dtex-24 filaments.
- the evaluation results for the obtained fibers are shown in Table 1.
- the Wooster spot U% was 0.4%
- the boiling water shrinkage was 10.3%
- the dry heat shrinkage was 17.2%.
- Examples 2 to 4 and Comparative Examples 1 to 3 In Examples 2 to 4 and Comparative Examples 1 to 3, the melting points of the core component polyester and the sheath component polyester were changed using the copolymer components used in the sheath component of Example 1, respectively. In accordance with Example 1, except that an appropriate spinning temperature was adopted. The evaluation results are shown in Table 1.
- Example 5 was the same as Example 1 except that the spinning machine was changed from DSD to the two-step method and the spinning conditions were adjusted accordingly. The evaluation results are shown in Table 1.
- Examples 6-7 Examples 6 to 7 were the same as Example 1 except that the shape of the discharge hole of the base was changed and the cross-sectional shape and the eccentricity of the core sheath were changed as shown in Table 2. The evaluation results are shown in Table 2.
- Examples 8-11 Examples 8 to 11 were the same as Example 1 except that the fineness of the composite fiber and the number of filaments were changed as shown in Table 2. The evaluation results are shown in Table 2.
- Examples 12-14 Example 12 to 14 were the same as Example 1 except that the amount of titanium oxide added to the core component polyester and the sheath component polyester was changed as shown in Table 3. The evaluation results are as shown in Table 3.
- Examples 15-17 Example 15 to 17 were the same as Example 1 except that the discharge amounts of the core component polyester and the sheath component polyester were changed to the core: sheath ratio as shown in Table 3. The evaluation results are as shown in Table 3.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Multicomponent Fibers (AREA)
- Knitting Of Fabric (AREA)
- Woven Fabrics (AREA)
Abstract
Description
(1)融点250℃以上のポリエステルを芯部に、融点215℃以上、かつ芯部を構成するポリエステルより融点が20~35℃低いポリエステルを鞘部とした芯鞘型複合繊維であって、強度が3.8cN/dtex以上、伸度が35%以上であることを特徴とする熱接着性芯鞘型複合繊維。
(2)芯鞘型複合繊維の総繊度が30dtex以上、単糸繊度が3.0dtex以下である(1)記載の熱接着性芯鞘型複合繊維。
(3)(1)または(2)記載の熱接着性芯鞘型複合繊維を構成に含むトリコット編み地。
本発明の芯鞘型複合繊維は、芯成分の融点が250℃以上のポリエステル、鞘成分の融点が215℃以上で、かつ芯部を構成するポリエステルの融点より20~35℃低いポリエステルで構成される。
本発明の熱接着性芯鞘型複合繊維の溶融紡糸方法に用いる口金は、既存の複合紡糸用口金を用いることができる。
定義式のηrは、純度98%以上のO-クロロフェノール(OCP)10mL中に試料を0.8g溶かし、25℃の温度にてオストワルド粘度計を用いて相対粘度ηrを下記の式により求め、固有粘度(IV)を算出した。
ηr=η/η0=(t×d)/(t0×d0)
固有粘度(IV)=0.0242ηr+0.2634
[η:ポリマ溶液の粘度、η0:OCPの粘度、t:溶液の落下時間(秒)、d:溶液の密度(g/cm3)、t0:OCPの落下時間(秒)、d0:OCPの密度(g/cm3)] 。
TA Instruments社製示差走査熱量測定(DSC)Q100を用いて、乾燥した試料を10mg秤量し、アルミパンに封入後、窒素雰囲気下で室温から300℃まで昇温速度16℃/分にて測定した。1回目の測定(1st run)後、5分間保持した後室温まで急冷し、連続して2回目の測定(2nd run)を実施し、2nd runにおいてその融解ピークのピークトップ温度を融点とした。
セイコーインスツルメンツ社製熱的機械的装置(TMA/SS-6000)を用いて、乾燥した試料を試料台に設置し、先端径1.0mmの針入プローブを使用して、測定荷重10g、窒素雰囲気下で室温から300℃まで昇温速度16℃/分にて測定した。変位開始時の温度を軟化温度とした。
繊維の断面をキーエンス(株)社マイクロスコープVHX-2000を用いて観察し、付属の画像解析ソフトにて各値を測定し、芯成分の重心位置をC1(図2の3)、複合繊維の重心位置をCf(図2の4)とし、複合繊維の半径をrf(図2の5)としたとき、以下の式から断面偏心率を算出した。
断面偏心率(%)={|Cf-C1|/rf}×100 。
(4)と同様の方法で、複合繊維断面を観察し、断面の中心を通る径の中で最長を長径A、最短を短径Bとし、以下の式にしたがって断面扁平率を算出した。
断面扁平率 = 長径A/短径B 。
JIS L1013(2010、化学繊維フィラメント糸試験方法)に従い測定した。タフネスは以下の式にて算出した。
(タフネス)=(強度)×(伸度)0.5 。
Zellweger社製USTER TESTER 4-CXを使用し、200m/分の速度で5分間糸を給糸しながらノーマルモードで測定を行った。
枠周1.0mの検尺機を用いて10回分のカセを作製し、以下の式に従い計算した。なお、原長、処理後長ともに測定時は荷重{(表示繊度(dtex)×2)g}をかけて測定した。収縮処理について、沸水収縮率は沸騰水中に15分間浸漬、乾熱収縮率は200℃で5分間処理した。
収縮率(%)={(原長(L1)-処理後長(L2))/原長(L1)}×100 。
東レエンジニアリング(株)製フライカウンター(MFC-120S)を用いて、解舒速度=500m/分、測定長=50000mの測定条件で、複合繊維48本を測定し、検出された毛羽個数をカウントした。カウントされた毛羽個数に基づき、以下の点数とした。
3点:全48本が0個
2点:48本の平均個数が0.1個未満、かつ48本中の最大個数が1個
1点:48本の平均個数が0.1個以上0.3個未満、かつ48本中の最大個数が1個
0点:48本の平均個数が0.3個以上または、48本中の最大個数が2個以上 。
本発明の複合繊維を整経後、フロント糸、バック糸ともに本発明により得られた原糸を使用して、2枚筬からなるトリコット編機(36ゲージ)を用いてダブルデンビー組織の閉じ目で編成した際の、整経毛羽検知個数、編成糸切れ回数に応じ、以下の評価点数とした。
3点:整経毛羽0.3個/千万m未満、かつ編成糸切れ0.5回/200m未満
2点:整経毛羽0.3個/千万m以上0.6個/千万m未満かつ編成糸切れ0.5回/200m未満、または、整経毛羽0.3個/千万m未満かつ編成糸切れ0.5回/200m以上1.0回/200m未満
1点:整経毛羽0.3個/千万m以上0.6個/千万m未満かつ編成糸切れ0.5回/200m以上1.0回/200m未満
0点:整経毛羽0.6個/千万m以上、または編成糸切れ1.0回/200m以上 。
(10)の方法でトリコット編み地を作製し、無荷重状態でピンテンター乾燥機にて、鞘成分の融点+10℃による熱処理を実施し、熱接着された布帛を作製した。熱接着後の布帛の密度はウェール方向が66本/2.54cm(=インチ)、コース方向が53本/2.54cm(=インチ)になるように調整した。熱接着後の布帛強度をウェール(タテ)、コース(ヨコ)方向それぞれにおいて、JIS 1096:2010(織物及び編物の生地試験方法)に準じて測定し、強度値に基づいて下記点数とした。
3点:タテ600N/5cm以上かつヨコ100N/5cm以上
2点:タテ500N/5cm以上600N/5cm未満かつヨコ100N/5cm以上、またはタテ600N/5cm以上かつヨコ80N/5cm以上100N/5cm未満
1点:タテ500N/5cm以上600N/5cm未満かつヨコ80N/5cm以上100N/5cm未満
0点:タテ500N/5cm未満またはヨコ80N/5cm未満 。
(11)と同様に作製した熱接着後のトリコット編み地を、厚さ150μmのRO分離膜2枚の間に挟みスパイラル型ユニットを形成し、直径が0.2m、長さ1mのモジュールに組み込み、TDS(溶解性蒸発残留物)が3.5重量%の海水を液温25℃で4.5MPaの差圧を与えて5日間ろ過した。5日間経過後に透過液の電気伝導度を測定し、硫酸マグネシウム塩の除去率を算出した。また5日経過後の透過液量を測定し、一日あたりの造水量を算出した。試験の結果を踏まえて、以下の評価点数とした。
3点:硫酸マグネシウム塩の除去率が99.8%以上かつ造水量が45m3/日以上
2点:硫酸マグネシウム塩の除去率が99.8%以上かつ造水量が40m3/日以上45m3/日未満、または、硫酸マグネシウム塩の除去率が99.0%以上99.8%未満かつ造水量が45m3/日以上
1点:硫酸マグネシウム塩の除去率が99.0%以上99.8%未満かつ造水量が40m3/日以上45m3/日未満
0点:硫酸マグネシウム塩の除去率が99.0%未満、または造水量が40m3/日未満 。
(9)~(12)の評価項目において、全てが2点以上である場合を合格とし、一つでも1点以下である場合を不合格とした。
酸化チタンを含有しないIV0.67のホモPETポリマ(高融点成分、融点255℃)と、共重合成分としてイソフタル酸およびビスフェノールAエチレンオキサイド付加物を全酸成分に対してそれぞれ7.1モル%、4.4モル%共重合した、酸化チタン含有率が0.05wt%、IV0.65の共重合PETポリマ(低融点成分、融点230℃)を準備し、高融点成分はエクストルーダーにて285℃にて溶融し、低融点成分はエクストルーダーにて260℃にて溶融し、紡糸温度を290℃に設定し、計量ポンプによる計量を行い、パック内での濾過を経て、口金ノズルにて図1のような同心円芯鞘断面形状(断面偏心率が0%、断面扁平率が1.0)となるように複合面積比率65:35の芯鞘複合型に吐出させた。このとき、高融点成分が芯に、低融点成分が鞘となるように配置した。
実施例2~4、比較例1~3は芯成分ポリエステル、鞘成分ポリエステルの融点を、それぞれ実施例1の鞘成分で使用した共重合成分を用いて共重合比率を変更し、表1の通りの融点に調整し、それにともなってそれぞれ適切な紡糸温度を採用した以外は実施例1に準じた。評価結果は表1の通りである。
実施例5は、紡糸機をDSDから2工程法に変更し、付随して紡糸条件等を調整した以外は実施例1に準じた。評価結果は表1の通りである。
実施例6~7は口金の吐出孔形状を変更し、断面形状と芯鞘の偏心率を表2の通り変更した以外は実施例1に準じた。評価結果は表2の通りである。
実施例8~11は複合繊維の繊度、フィラメント数を表2の通り変更した以外は実施例1に準じた。評価結果は表2の通りである。
実施例12~14は芯成分ポリエステル、鞘成分ポリエステルに添加する酸化チタン量を表3の通り変更した以外は、実施例1に準じた。評価結果は表3の通りである。
実施例15~17は芯成分ポリエステル、鞘成分ポリエステルの吐出量を変更し、表3の通りの芯:鞘比率とした以外は実施例1に準じた。評価結果は表3の通りである。
2 鞘成分
3 芯成分の重心位置
4 複合繊維の重心位置
5 複合繊維の半径
10 熱接着性芯鞘複合繊維
Claims (3)
- 融点250℃以上のポリエステルを芯部に、融点215℃以上、かつ芯部を構成するポリエステルより融点が20~35℃低いポリエステルを鞘部とした芯鞘型複合繊維であって、強度が3.8cN/dtex以上、伸度が35%以上であることを特徴とする熱接着性芯鞘型複合繊維。
- 芯鞘型複合繊維の総繊度が30dtex以上、単糸繊度が3.0dtex以下である請求項1記載の熱接着性芯鞘型複合繊維。
- 請求項1または2記載の熱接着性芯鞘型複合繊維を構成に含むトリコット編み地。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/481,928 US20200040484A1 (en) | 2017-02-09 | 2018-02-06 | Thermally adhesive sheath-core conjugate fiber and tricot fabric |
| CN201880010784.2A CN110268109B (zh) | 2017-02-09 | 2018-02-06 | 热粘接性芯鞘型复合纤维以及经编针织物 |
| JP2018513569A JP6610778B2 (ja) | 2017-02-09 | 2018-02-06 | 熱接着性芯鞘型複合繊維およびトリコット編み地 |
| KR1020197017284A KR102502868B1 (ko) | 2017-02-09 | 2018-02-06 | 열접착성 심초형 복합 섬유 및 트리코트 편지 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017022048 | 2017-02-09 | ||
| JP2017-022048 | 2017-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018147251A1 true WO2018147251A1 (ja) | 2018-08-16 |
Family
ID=63107478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2018/003927 Ceased WO2018147251A1 (ja) | 2017-02-09 | 2018-02-06 | 熱接着性芯鞘型複合繊維およびトリコット編み地 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200040484A1 (ja) |
| JP (1) | JP6610778B2 (ja) |
| KR (1) | KR102502868B1 (ja) |
| CN (1) | CN110268109B (ja) |
| WO (1) | WO2018147251A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020058999A (ja) * | 2018-10-12 | 2020-04-16 | 株式会社クボタ | 膜エレメントおよび膜分離機器 |
| JP2020062598A (ja) * | 2018-10-17 | 2020-04-23 | 株式会社クボタ | 膜エレメント、膜分離機器および膜エレメントの製造方法 |
| KR102172280B1 (ko) * | 2019-05-13 | 2020-10-30 | 도레이첨단소재 주식회사 | 열접착성 섬유용 폴리에스테르 조성물, 이를 통해 구현된 열접착성 복합섬유 및 부직포 |
| WO2022030280A1 (ja) * | 2020-08-05 | 2022-02-10 | 東レ株式会社 | 防護服およびその製造方法 |
| KR20240046863A (ko) | 2021-08-26 | 2024-04-11 | 도레이 카부시키가이샤 | 스펀본드 부직포 그리고 이것을 포함하는 분리막 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102102040B1 (ko) | 2018-07-31 | 2020-04-17 | 도레이첨단소재 주식회사 | 내오염성 역삼투 분리막, 이의 제조방법 및 이를 포함하는 내오염성 역삼투 모듈 |
| KR102235399B1 (ko) | 2019-09-17 | 2021-04-01 | 도레이첨단소재 주식회사 | 선택형 양단 집수기능을 갖는 필터 구조체 및 이를 이용한 여과방법 |
| KR102816001B1 (ko) | 2019-09-18 | 2025-05-30 | 도레이첨단소재 주식회사 | 역삼투막 및 이의 제조방법 |
| KR102172284B1 (ko) | 2019-10-29 | 2020-10-30 | 도레이첨단소재 주식회사 | 나권형 분리막 모듈 및 이의 제조방법 |
| KR102347498B1 (ko) * | 2020-04-17 | 2022-01-05 | 도레이첨단소재 주식회사 | 중금속 비용출성 나권형 필터 모듈 및 이의 제조방법 |
| CN115182087A (zh) * | 2021-04-07 | 2022-10-14 | 江苏福斯得纺织有限公司 | 一种高防水性纺织面料加工工艺 |
| KR102534675B1 (ko) * | 2021-04-09 | 2023-05-18 | 도레이첨단소재 주식회사 | 반발탄성이 우수한 열접착성 복합섬유 및 이를 포함하는 섬유집합체 |
| CN113151962A (zh) * | 2021-05-17 | 2021-07-23 | 嵊州盛泰针织有限公司 | 一种新型抗起球三明治针织面料及其生产工艺 |
| KR102642537B1 (ko) * | 2021-08-17 | 2024-02-28 | 도레이첨단소재 주식회사 | 중금속 비용출 트리코트 여과직물 및 이의 제조방법 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08302527A (ja) * | 1995-05-02 | 1996-11-19 | Unitika Ltd | 熱接着性複合長繊維糸及びシート |
| JP2000119918A (ja) * | 1998-10-12 | 2000-04-25 | Mitsubishi Rayon Co Ltd | 熱接着性ポリエステル芯鞘複合繊維及びその製造方法 |
| JP2005023436A (ja) * | 2003-06-30 | 2005-01-27 | Toray Ind Inc | 特殊繊維 |
| JP2006138046A (ja) * | 2004-11-15 | 2006-06-01 | Toray Ind Inc | ヒートシール用スパンボンド不織布およびそれを用いたフィルター |
| JP2009131840A (ja) * | 2007-11-05 | 2009-06-18 | Toray Ind Inc | 分離膜支持体並びにそれを用いた分離膜及び流体分離素子 |
| JP2011001663A (ja) * | 2009-06-22 | 2011-01-06 | Toray Ind Inc | 複合繊維 |
| JP2011245454A (ja) * | 2010-05-28 | 2011-12-08 | Fukui Tateami Kogyo Kk | 液体分離装置に用いる流路材用トリコット編地とその製造方法 |
| WO2012008617A1 (ja) * | 2010-07-14 | 2012-01-19 | セーレン株式会社 | 繊維布帛及び繊維布帛の製造方法 |
| WO2017114313A1 (zh) * | 2015-12-28 | 2017-07-06 | 东丽纤维研究所(中国)有限公司 | 芯鞘型复合纤维、假捻丝和纤维构造体 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62184119A (ja) | 1986-02-03 | 1987-08-12 | Teijin Ltd | 熱接着性長繊維 |
| JP3313878B2 (ja) * | 1994-03-16 | 2002-08-12 | 日本エステル株式会社 | ポリエステル系バインダー繊維 |
| JPH11241228A (ja) * | 1998-02-26 | 1999-09-07 | Nippon Ester Co Ltd | ポリエステル系熱接着性繊維及びクッション構造体 |
| JP3559475B2 (ja) * | 1999-06-15 | 2004-09-02 | 日東電工株式会社 | 液体分離膜モジュール |
| JP3924217B2 (ja) * | 2002-07-30 | 2007-06-06 | ユニチカ株式会社 | 成形カーペット |
| WO2008032379A1 (fr) * | 2006-09-14 | 2008-03-20 | Toray Industries, Inc. | Fibre polyester, tricot tissé, housse pour voiture et procédé de production de fibre polyester |
| JP5019991B2 (ja) * | 2007-07-30 | 2012-09-05 | ユニチカ株式会社 | スパンレース複合不織布の製造方法 |
| KR20090047894A (ko) * | 2007-11-08 | 2009-05-13 | 주식회사 코오롱 | 드레인보드 필터재용 스펀본드 부직포 및 이의 제조방법 |
| CN102162152B (zh) * | 2010-02-21 | 2013-07-17 | 东丽纤维研究所(中国)有限公司 | 一种聚酯纤维及织物 |
| KR20130035414A (ko) * | 2011-09-30 | 2013-04-09 | 코오롱인더스트리 주식회사 | 폴리에스테르계 부직포 및 그 제조 방법 |
| JP5917944B2 (ja) * | 2012-02-23 | 2016-05-18 | 日東電工株式会社 | 混紡不織布、フィルタ濾材およびフィルタユニット |
| JP5943797B2 (ja) | 2012-09-27 | 2016-07-05 | ユニチカトレーディング株式会社 | 経編地 |
-
2018
- 2018-02-06 CN CN201880010784.2A patent/CN110268109B/zh active Active
- 2018-02-06 US US16/481,928 patent/US20200040484A1/en not_active Abandoned
- 2018-02-06 JP JP2018513569A patent/JP6610778B2/ja active Active
- 2018-02-06 KR KR1020197017284A patent/KR102502868B1/ko active Active
- 2018-02-06 WO PCT/JP2018/003927 patent/WO2018147251A1/ja not_active Ceased
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08302527A (ja) * | 1995-05-02 | 1996-11-19 | Unitika Ltd | 熱接着性複合長繊維糸及びシート |
| JP2000119918A (ja) * | 1998-10-12 | 2000-04-25 | Mitsubishi Rayon Co Ltd | 熱接着性ポリエステル芯鞘複合繊維及びその製造方法 |
| JP2005023436A (ja) * | 2003-06-30 | 2005-01-27 | Toray Ind Inc | 特殊繊維 |
| JP2006138046A (ja) * | 2004-11-15 | 2006-06-01 | Toray Ind Inc | ヒートシール用スパンボンド不織布およびそれを用いたフィルター |
| JP2009131840A (ja) * | 2007-11-05 | 2009-06-18 | Toray Ind Inc | 分離膜支持体並びにそれを用いた分離膜及び流体分離素子 |
| JP2011001663A (ja) * | 2009-06-22 | 2011-01-06 | Toray Ind Inc | 複合繊維 |
| JP2011245454A (ja) * | 2010-05-28 | 2011-12-08 | Fukui Tateami Kogyo Kk | 液体分離装置に用いる流路材用トリコット編地とその製造方法 |
| WO2012008617A1 (ja) * | 2010-07-14 | 2012-01-19 | セーレン株式会社 | 繊維布帛及び繊維布帛の製造方法 |
| WO2017114313A1 (zh) * | 2015-12-28 | 2017-07-06 | 东丽纤维研究所(中国)有限公司 | 芯鞘型复合纤维、假捻丝和纤维构造体 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020058999A (ja) * | 2018-10-12 | 2020-04-16 | 株式会社クボタ | 膜エレメントおよび膜分離機器 |
| JP7228360B2 (ja) | 2018-10-12 | 2023-02-24 | 株式会社クボタ | 膜エレメントおよび膜分離機器 |
| JP2020062598A (ja) * | 2018-10-17 | 2020-04-23 | 株式会社クボタ | 膜エレメント、膜分離機器および膜エレメントの製造方法 |
| JP7228361B2 (ja) | 2018-10-17 | 2023-02-24 | 株式会社クボタ | 膜エレメントの製造方法 |
| KR102172280B1 (ko) * | 2019-05-13 | 2020-10-30 | 도레이첨단소재 주식회사 | 열접착성 섬유용 폴리에스테르 조성물, 이를 통해 구현된 열접착성 복합섬유 및 부직포 |
| WO2020231166A1 (ko) * | 2019-05-13 | 2020-11-19 | 도레이첨단소재 주식회사 | 열접착성 섬유용 폴리에스테르 조성물, 이를 통해 구현된 열접착성 복합섬유 및 부직포 |
| WO2022030280A1 (ja) * | 2020-08-05 | 2022-02-10 | 東レ株式会社 | 防護服およびその製造方法 |
| KR20240046863A (ko) | 2021-08-26 | 2024-04-11 | 도레이 카부시키가이샤 | 스펀본드 부직포 그리고 이것을 포함하는 분리막 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20190107658A (ko) | 2019-09-20 |
| KR102502868B1 (ko) | 2023-02-23 |
| JP6610778B2 (ja) | 2019-11-27 |
| CN110268109B (zh) | 2022-07-22 |
| JPWO2018147251A1 (ja) | 2019-06-27 |
| US20200040484A1 (en) | 2020-02-06 |
| CN110268109A (zh) | 2019-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6610778B2 (ja) | 熱接着性芯鞘型複合繊維およびトリコット編み地 | |
| KR101412284B1 (ko) | 액정 폴리에스테르 섬유 및 그의 제조 방법 | |
| CN102165110B (zh) | 聚酯单丝、其制造方法以及使用其的丝网制造方法 | |
| JP5286827B2 (ja) | 液晶ポリエステル繊維 | |
| JP5098693B2 (ja) | 液晶ポリエステル繊維 | |
| TW567257B (en) | Polytrimethyleneterephthalate modified cross section yarn | |
| WO2016052269A1 (ja) | ポリエステルフィラメントパッケージ | |
| JP4325387B2 (ja) | スクリーン紗用ポリエステルモノフィラメント及びその製造方法 | |
| JP5187224B2 (ja) | 溶融液晶性ポリエステル繊維の製造方法 | |
| JP5862076B2 (ja) | スクリーン紗用ポリエステルモノフィラメント | |
| JP2005248357A (ja) | スクリーン紗用ポリエステルモノフィラメント | |
| JP3753658B2 (ja) | ポリトリメチレンテレフタレートマルチフィラメント糸 | |
| JP7176413B2 (ja) | 高強力細繊度ポリエステルマルチフィラメント | |
| JP2005047020A (ja) | スクリーン紗用ポリエステルモノフィラメント | |
| CN116490649B (zh) | 海岛复合聚酯纤维 | |
| JP7304285B2 (ja) | 液晶ポリエステル繊維からなるメッシュ織物 | |
| JP2009242952A (ja) | ポリエステルマルチフィラメントおよびその製造方法ならびに粘着テープ用基布 | |
| JP2012211399A (ja) | ポリエステルモノフィラメント | |
| JP2022113213A (ja) | ポリエステル系複合混繊加工糸 | |
| JP2020193411A (ja) | ポリエステルマルチフィラメント | |
| JP2008163492A (ja) | スクリーン紗用ポリエステルモノフィラメント | |
| JPH06166908A (ja) | 極細繊維及びその製造方法 | |
| JP2009256822A (ja) | スクリーン紗用モノフィラメント |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENP | Entry into the national phase |
Ref document number: 2018513569 Country of ref document: JP Kind code of ref document: A |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18751435 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 20197017284 Country of ref document: KR Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 18751435 Country of ref document: EP Kind code of ref document: A1 |