JP2019163582A - Sheath core type composite thermally adhesive fiber - Google Patents
Sheath core type composite thermally adhesive fiber Download PDFInfo
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- JP2019163582A JP2019163582A JP2019047266A JP2019047266A JP2019163582A JP 2019163582 A JP2019163582 A JP 2019163582A JP 2019047266 A JP2019047266 A JP 2019047266A JP 2019047266 A JP2019047266 A JP 2019047266A JP 2019163582 A JP2019163582 A JP 2019163582A
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- 239000000835 fiber Substances 0.000 title claims abstract description 50
- 239000000853 adhesive Substances 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 230000001070 adhesive effect Effects 0.000 title abstract description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000000306 component Substances 0.000 claims abstract description 52
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims abstract description 45
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000008358 core component Substances 0.000 claims abstract description 31
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229920001577 copolymer Polymers 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 18
- 230000008018 melting Effects 0.000 claims abstract description 18
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 8
- 239000004744 fabric Substances 0.000 claims description 9
- 239000002759 woven fabric Substances 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- -1 polyethylene terephthalate Polymers 0.000 description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 description 12
- 239000005020 polyethylene terephthalate Substances 0.000 description 12
- 229920000728 polyester Polymers 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 238000002074 melt spinning Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 4
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 4
- 229920001634 Copolyester Polymers 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- XGIAHMUOCFHQTI-UHFFFAOYSA-N Cl.Cl.Cl.Cl.CC Chemical compound Cl.Cl.Cl.Cl.CC XGIAHMUOCFHQTI-UHFFFAOYSA-N 0.000 description 1
- 241000257303 Hymenoptera Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920006027 ternary co-polymer Polymers 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
- Woven Fabrics (AREA)
- Knitting Of Fabric (AREA)
- Multicomponent Fibers (AREA)
Abstract
Description
本発明は、鞘成分を熱接着性成分とする、引張強度の高い芯鞘型複合熱接着性繊維に関に関するものである。 The present invention relates to a core-sheath type composite heat-adhesive fiber having a high tensile strength and having a sheath component as a heat-adhesive component.
従来より、メッシュシートの素材として、芯成分がポリエチレンテレフタレートで鞘成分がポリエチレンテレフタレートよりも融点の低いポリエステル共重合体よりなる芯鞘型複合繊維を用いることは知られている。ここで、ポリエステル共重合体としては、エチレングリコールと１，４−ブタンジオールとテレフタル酸とε−カプロラクトンの四元重合体が用いられている。かかる芯鞘型複合繊維よりなるマルチフィラメント糸を経糸及び緯糸に用いて粗目の織物を製織し、熱処理して鞘成分を溶融させ経糸及び緯糸の交点を融着させてメッシュシートとして用いられる。経糸及び緯糸の交点を融着させるのは、メッシュシートの目づれを防止するためである。以上の事項は、本件出願人の子会社であった者の公開公報である特許文献１の実施例等に記載されている。 Conventionally, it is known to use a core-sheath type composite fiber made of a polyester copolymer having a core component of polyethylene terephthalate and a sheath component having a melting point lower than that of polyethylene terephthalate as a material for the mesh sheet. Here, as the polyester copolymer, a quaternary polymer of ethylene glycol, 1,4-butanediol, terephthalic acid, and ε-caprolactone is used. A coarse woven fabric is woven using multifilament yarns made of such core-sheath composite fibers as warps and wefts, heat treated to melt the sheath component, and the intersections of the warp and wefts are fused to be used as a mesh sheet. The reason for fusing the intersections of the warp and the weft is to prevent the mesh sheet from being blurred. The above matters are described in Examples of Patent Document 1 which is a public gazette of a person who was a subsidiary of the present applicant.
本発明は、特許文献１に記載された芯鞘型複合繊維を改良したものであって、特に繊維の引張強度を高くしたものである。 The present invention is an improvement of the core-sheath type composite fiber described in Patent Document 1, and particularly increases the tensile strength of the fiber.
本発明は、繊維の引張強度を高くするため、鞘成分であるポリエステル共重合体として、特定の共重合体を採用したものである。すなわち、本発明は、芯成分がエチレングリコールとテレフタル酸からなる共重合体よりなり、鞘成分がエチレングリコールと１，４−ブタンジオールとジエチレングリコールとテレフタル酸からなる四元共重合体よりなり、該鞘成分の融点が該芯成分の融点よりも５０℃〜９０℃低く、該鞘成分が熱接着性成分となる芯鞘型複合熱接着性繊維に関するものである。本発明において、エチレングリコール、テレフタル酸、エチレングリコール、１，４−ブタンジオール及びジエチレングリコールの化合物名は、共重合体の構成単位としての意味、すなわち、エチレングリコール構成単位等という意味である。なお、芯成分及び鞘成分の融点は、パーキンエルマー社製の示差走査型熱量計ＤＳＣ−７型を使用し、昇温速度２０℃／分で測定したものである。 The present invention employs a specific copolymer as the polyester copolymer that is a sheath component in order to increase the tensile strength of the fiber. That is, the present invention comprises a copolymer comprising a core component comprising ethylene glycol and terephthalic acid, and a sheath component comprising a quaternary copolymer comprising ethylene glycol, 1,4-butanediol, diethylene glycol and terephthalic acid, The sheath component has a melting point of 50 ° C. to 90 ° C. lower than the melting point of the core component, and the sheath component relates to a core / sheath type composite heat-bondable fiber that becomes a heat-bondable component. In the present invention, the compound names of ethylene glycol, terephthalic acid, ethylene glycol, 1,4-butanediol, and diethylene glycol mean the meaning as the constituent unit of the copolymer, that is, the meaning of the ethylene glycol constituent unit. In addition, melting | fusing point of a core component and a sheath component is measured with the temperature increase rate of 20 degree-C / min using the differential scanning calorimeter DSC-7 type | mold by PerkinElmer.
本発明に係る芯鞘型複合熱接着性繊維は、芯成分と鞘成分とからなる。芯成分を構成する共重合体は、エチレングリコールをジオール成分とし、テレフタル酸をジカルボン酸成分として得られるポリエチレンテレフタレートである。なお、ジカルボン酸成分として、ごく少量のイソフタル酸等の他のジカルボン酸成分が混合されていてもよい。エチレングリコールとテレフタル酸の共重合比は、概ね当モル比である。芯成分の融点は概ね２６０℃程度である。一方、鞘成分を構成する四元共重合体は、エチレングリコールと１，４−ブタンジオールとジエチレングリコールとをジオール成分とし、テレフタル酸をジカルボン酸成分として得られる共重合ポリエステルである。四元共重合体の共重合モル比は、テレフタル酸１００モル％に対して、ジエチレングリコール１．０〜２．０モル％、１，４−ブタンジオール２０．０〜９０．０モル％及びエチレングリコール９．０〜７９．０モル％であるのが好ましい。特に、テレフタル酸１００モル％に対して、ジエチレングリコール１．０〜２．０モル％、１，４−ブタンジオール４９．０〜４９．５モル％及びエチレングリコール４９．０〜４９．５モル％であるのが、より好ましい。ジエチレングリコールが共重合成分として所定量存在すると、繊維の引張強度が向上する。鞘成分の融点は、芯成分の融点よりも５０℃〜９０℃低くなっており、概ね１７０℃〜２１０℃である。芯成分と鞘成分の融点差が５０℃未満であると、鞘成分が溶融する温度に加熱した場合、芯成分が熱による影響を受けて劣化する恐れがある。したがって、加熱処理により得られた熱成形体の物性が低下するので、好ましくない。また、芯成分と鞘成分の融点差が８０℃を超えると、芯成分と鞘成分の融点差が大きくなりすぎて、芯鞘型複合熱接着性繊維を公知の複合溶融紡糸法で得られにくくなる。 The core-sheath type composite heat-bondable fiber according to the present invention comprises a core component and a sheath component. The copolymer constituting the core component is polyethylene terephthalate obtained using ethylene glycol as the diol component and terephthalic acid as the dicarboxylic acid component. As the dicarboxylic acid component, a very small amount of other dicarboxylic acid components such as isophthalic acid may be mixed. The copolymerization ratio of ethylene glycol and terephthalic acid is about the same molar ratio. The melting point of the core component is about 260 ° C. On the other hand, the quaternary copolymer constituting the sheath component is a copolyester obtained by using ethylene glycol, 1,4-butanediol and diethylene glycol as the diol component and terephthalic acid as the dicarboxylic acid component. The copolymerization molar ratio of the quaternary copolymer is 1.0 to 2.0 mol% of diethylene glycol, 20.0 to 90.0 mol% of 1,4-butanediol, and ethylene glycol with respect to 100 mol% of terephthalic acid. It is preferably 9.0 to 99.0 mol%. In particular, with respect to 100 mol% of terephthalic acid, 1.0 to 2.0 mol% of diethylene glycol, 49.0 to 49.5 mol% of 1,4-butanediol, and 49.0 to 49.5 mol% of ethylene glycol More preferably. When a predetermined amount of diethylene glycol is present as a copolymerization component, the tensile strength of the fiber is improved. The melting point of the sheath component is 50 ° C. to 90 ° C. lower than the melting point of the core component, and is generally 170 ° C. to 210 ° C. When the melting point difference between the core component and the sheath component is less than 50 ° C., the core component may be deteriorated due to the influence of heat when heated to a temperature at which the sheath component melts. Therefore, the physical properties of the thermoformed product obtained by the heat treatment are lowered, which is not preferable. Also, if the melting point difference between the core component and the sheath component exceeds 80 ° C., the melting point difference between the core component and the sheath component becomes too large, and it is difficult to obtain a core-sheath type composite heat-bondable fiber by a known composite melt spinning method. Become.
芯鞘型複合熱接着性繊維は、芯成分となるポリエチレンテレフタレートと、鞘成分となる共重合ポリエステルとを、複合紡糸孔を持つ紡糸装置に供給して、複合溶融紡糸するという公知の方法で得ることができる。芯成分と鞘成分の重量割合は、芯成分：鞘成分＝１〜５：１（重量比）程度である。芯成分の重量割合が低すぎると、加熱処理後に得られた熱成形体の形態保持性（強度や剛性）が低下する傾向となる。熱接着性成分である鞘成分が溶融して融着しても芯成分は当初の繊維形態を維持しているが、かかる芯成分の重量割合が低いと、熱成形体の強度や剛性が低下するのである。また、熱接着性成分である鞘成分の重量割合が低すぎると、加熱処理後に得られた熱成形体の表面に毛羽立ちが生じやすくなる。芯成分と鞘成分は、同心に配置されていてもよいし、偏心して配置されていてもよい。しかしながら、偏心に配置されていると、加熱処理時に、収縮が生じやすくなるため、同心に配置されている方が好ましい。 The core-sheath type composite heat-bondable fiber is obtained by a known method in which a polyethylene terephthalate serving as a core component and a copolyester serving as a sheath component are supplied to a spinning device having a composite spinning hole and subjected to composite melt spinning. be able to. The weight ratio of the core component and the sheath component is about core component: sheath component = 1-5: 1 (weight ratio). When the weight ratio of the core component is too low, the form retainability (strength and rigidity) of the thermoformed product obtained after the heat treatment tends to decrease. Even if the sheath component, which is a heat-adhesive component, is melted and fused, the core component maintains the original fiber form, but if the weight ratio of the core component is low, the strength and rigidity of the thermoformed product are reduced. To do. On the other hand, if the weight ratio of the sheath component, which is a heat-adhesive component, is too low, fuzz tends to occur on the surface of the thermoformed product obtained after the heat treatment. The core component and the sheath component may be arranged concentrically or may be arranged eccentrically. However, since it will become easy to produce shrinkage | contraction at the time of heat processing if it arrange | positions eccentrically, it is more preferable to arrange | position concentrically.
芯鞘型複合熱接着性繊維の繊度は１〜２０デシテックス程度であり、短繊維であっても長繊維であってもよい。長繊維の場合は、一本の長繊維を熱接着性モノフィラメント糸として用いてもよいが、複数本の長繊維を集束して熱接着性マルチフィラメント糸とするのが好ましい。さらに、この熱接着性マルチフィラメント糸を用いて、製織、製編、製網又は編組して、織物、編物、網地又は紐等の熱接着性繊維製品としてもよい。もちろん、熱接着性モノフィラメント糸を用いて熱接着性製品を得てもよい。 The fineness of the core-sheath type composite heat-bondable fiber is about 1 to 20 dtex, and may be a short fiber or a long fiber. In the case of long fibers, a single long fiber may be used as a heat-adhesive monofilament yarn, but it is preferable that a plurality of long fibers are converged to form a heat-adhesive multifilament yarn. Furthermore, weaving, knitting, netting or braiding may be used for this heat-adhesive multifilament yarn to form a heat-adhesive fiber product such as woven fabric, knitted fabric, netting or string. Of course, a heat-adhesive product may be obtained using a heat-adhesive monofilament yarn.
本発明に係る芯鞘型複合熱接着性繊維は、種々の方法で用いることができる。たとえば、芯鞘型複合熱接着性繊維と他種繊維とを混合して繊維ウェブを形成した後、加熱処理を施し、鞘成分のみを溶融させて繊維相互間を融着させた不織布を得ることができる。また、芯鞘型複合熱接着性長繊維一本からなる熱接着性モノフィラメント糸で粗目の織物又は編物を得た後、加熱処理を施し、鞘成分のみを溶融させて熱接着性モノフィラメント糸同士の交点を融着させたネットを得ることもできる。 The core-sheath type composite heat-bondable fiber according to the present invention can be used in various ways. For example, after a core-sheath type composite heat-adhesive fiber and other types of fibers are mixed to form a fiber web, heat treatment is performed to obtain a nonwoven fabric in which only the sheath component is melted and the fibers are fused together. Can do. In addition, after obtaining a coarse woven fabric or knitted fabric with a heat-adhesive monofilament yarn composed of a single core-sheath type composite heat-adhesive long fiber, heat treatment is performed to melt only the sheath component, It is also possible to obtain a net with fused intersections.
本発明においては、芯鞘型複合熱接着性長繊維を複数本集束させた熱接着性マルチフィラメント糸を得た後、この熱接着性マルチフィラメント糸を用いて、上記した熱接着性繊維製品を得るのが好ましい。たとえば、織物又は編物よりなる熱接着性繊維製品の場合、この編織物に加熱処理を施し、鞘成分のみを溶融させて、編織物中の糸の交点で融着させ、目づれの生じにくい織物よりなる熱成形体を得ることができる。かかる熱成形体は、建築土木工事現場で用いるメッシュシート、安全ネット又は剥落防止ネットとして好適である。また、編織物中の糸の交点だけでなく、熱接着性マルチフィラメント糸全体を鞘成分で融着させて高剛性の熱成形体を得ることもできる。かかる高剛性の熱成形体は、漁網や獣害防止ネットとして好適である。特に漁網の場合、定置網、籠網又は養殖網として最適である。さらに、本発明に係る方法で得られた熱成形体は、住居の床下から白蟻が侵入するのを防止するための防蟻シートとして用いることもできる。防蟻シートとする際に、本発明に係る方法で得られた熱成形体に殺蟻剤や蟻忌避剤等の防蟻剤を付着させてもよい。なお、加熱処理は、熱接着性成分である鞘成分の融点以上で芯成分の融点未満の温度で行われ、一般的に１８０℃〜２００℃程度で行われる。また、加熱処理時に又は加熱処理後に、所望の形状となるように加圧してもよい。 In the present invention, after obtaining a heat-adhesive multifilament yarn obtained by bundling a plurality of core-sheath type composite heat-adhesive long fibers, the above-mentioned heat-adhesive fiber product is obtained using the heat-adhesive multifilament yarn. It is preferable to obtain. For example, in the case of a heat-bondable fiber product made of woven fabric or knitted fabric, heat treatment is applied to the knitted fabric, and only the sheath component is melted and fused at the intersection of yarns in the knitted fabric. The thermoforming body which becomes can be obtained. Such a thermoformed body is suitable as a mesh sheet, a safety net or a peeling prevention net used at a construction civil engineering work site. Further, not only the intersection of the yarns in the knitted fabric, but also the entire heat-adhesive multifilament yarn can be fused with the sheath component to obtain a highly rigid thermoformed product. Such a highly rigid thermoformed article is suitable as a fishing net or a beast damage prevention net. Particularly in the case of fishing nets, it is most suitable as a stationary net, a seine net or an aquaculture net. Furthermore, the thermoformed body obtained by the method according to the present invention can also be used as an ant-proof sheet for preventing white ants from entering under the floor of a house. When making an ant-proof sheet, an ant-proofing agent such as an ant-killing agent or an ant repellent may be attached to the thermoformed product obtained by the method according to the present invention. In addition, heat processing are performed at the temperature more than melting | fusing point of the sheath component which is a thermoadhesive component, and less than melting | fusing point of a core component, and are generally performed at about 180 to 200 degreeC. Moreover, you may pressurize so that it may become a desired shape at the time of heat processing or after heat processing.
本発明に係る芯鞘型複合熱接着性繊維は、鞘成分として特定の四元共重合体を採用したので、引張強度が高くなり、切断伸度が低くなって、繊維物性が向上したものである。この結果、芯鞘型複合熱接着性繊維を用いて、熱接着性マルチフィラメント糸を得る際に、糸切れや毛羽立ちが少なくなるという効果を奏する。したがってまた、この熱接着性マルチフィラメント糸を製織、編織、製網又は編組しやすくなり、織物、編物、網地又は紐等の熱接着性繊維製品を得やすくなるという効果も奏する。 The core-sheath type composite heat-bondable fiber according to the present invention employs a specific quaternary copolymer as a sheath component, so that the tensile strength is increased, the cut elongation is decreased, and the fiber properties are improved. is there. As a result, when the core-sheath type composite heat-adhesive fiber is used to obtain a heat-adhesive multifilament yarn, there is an effect that thread breakage and fluffing are reduced. Therefore, the heat-adhesive multifilament yarn can be easily woven, knitted, netted or braided, and the effect of facilitating obtaining a heat-adhesive fiber product such as woven fabric, knitted fabric, netting or string can also be achieved.
実施例１
芯成分として、エチレングリコールとテレフタル酸の共重合体（融点２５６℃で極限粘度［η］０．７５）よりなるポリエチレンテレフタレートを準備した。鞘成分として、エチレングリコール、１，４−ブタンジオール、ジエチレングリコール及びテレフタル酸の四元共重合体（融点１８３℃で極限粘度［η］０．７０）よりなる共重合ポリエステルを準備した。なお、四元共重合体の共重合モル比は、エチレングリコール４９．４モル％、１，４−ブタンジオール４９．３モル％、ジエチレングリコール１．３モル％及びテレフタル酸１００モル％である。なお、極限粘度［η］は、フェノールと四塩化エタンの等重量混合物を溶媒とし、濃度０．５ｇ／ｄｌ及び液温２０℃で測定したものである。
孔径０．６ｍｍで孔数１９２個の芯鞘型複合紡糸口金を具えた複合溶融紡糸装置に、上記したポリエチレンテレフタレートと共重合ポリエステルを供給し、口金温度を２８５℃とし、ポリエチレンテレフタレート：共重合ポリエステル＝２．７：１（重量比）として、複合溶融紡糸を行い、同心状芯鞘型複合接着性繊維を得た。得られた芯鞘型複合熱接着性繊維１９２本が集束した糸条に、常法により冷却、延伸及び弛緩処理を施して、１６７０デシテックス／１９２フィラメントの熱接着性マルチフィラメント糸を得た。
Example 1
As a core component, polyethylene terephthalate made of a copolymer of ethylene glycol and terephthalic acid (melting point: 256 ° C., intrinsic viscosity [η] 0.75) was prepared. As a sheath component, a copolyester composed of a quaternary copolymer of ethylene glycol, 1,4-butanediol, diethylene glycol and terephthalic acid (melting point: 183 ° C., intrinsic viscosity [η] 0.70) was prepared. The copolymerization molar ratio of the quaternary copolymer is 49.4 mol% ethylene glycol, 49.3 mol% 1,4-butanediol, 1.3 mol% diethylene glycol, and 100 mol% terephthalic acid. The intrinsic viscosity [η] is measured at a concentration of 0.5 g / dl and a liquid temperature of 20 ° C. using an equal weight mixture of phenol and ethane tetrachloride as a solvent.
The above-mentioned polyethylene terephthalate and copolymer polyester are supplied to a composite melt spinning apparatus having a core-sheath type composite spinneret having a hole diameter of 0.6 mm and 192 holes, and the die temperature is set to 285 ° C. = 2.7: 1 (weight ratio), composite melt spinning was performed to obtain a concentric core-sheath type composite adhesive fiber. The obtained yarn with 192 core-sheath type composite heat-adhesive fibers bundled was subjected to cooling, stretching and relaxation treatments by a conventional method to obtain a heat-adhesive multifilament yarn of 1670 dtex / 192 filaments.
実施例２
芯成分として用いるポリエチレンテレフタレートの極限粘度［η］を０．８０に変更した他は、実施例１と同一の方法で熱接着性マルチフィラメント糸を得た。
Example 2
A heat-adhesive multifilament yarn was obtained in the same manner as in Example 1 except that the intrinsic viscosity [η] of polyethylene terephthalate used as the core component was changed to 0.80.
実施例３
芯成分として用いるポリエチレンテレフタレートの極限粘度［η］を０．８６に変更した他は、実施例１と同一の方法で熱接着性マルチフィラメント糸を得た。
Example 3
A heat-adhesive multifilament yarn was obtained in the same manner as in Example 1 except that the intrinsic viscosity [η] of polyethylene terephthalate used as the core component was changed to 0.86.
実施例４
芯成分として用いるポリエチレンテレフタレートの極限粘度［η］を０．９２に変更した他は、実施例１と同一の方法で熱接着性マルチフィラメント糸を得た。
Example 4
A heat-adhesive multifilament yarn was obtained in the same manner as in Example 1 except that the intrinsic viscosity [η] of polyethylene terephthalate used as the core component was changed to 0.92.
実施例５
芯成分として用いるポリエチレンテレフタレートの極限粘度［η］を１．０５に変更した他は、実施例１と同一の方法で熱接着性マルチフィラメント糸を得た。
Example 5
A heat-adhesive multifilament yarn was obtained in the same manner as in Example 1 except that the intrinsic viscosity [η] of polyethylene terephthalate used as the core component was changed to 1.05.
参考例１
芯成分として、実施例１で用いたポリエチレンテレフタレートを準備した。鞘成分として、エチレングリコール、１，４−ブタンジオール、ジエチレングリコール、ε−カプロラクトン及びテレフタル酸の五元共重合体（融点１６０℃で極限粘度［η］０．６５）よりなる共重合ポリエステルを準備した。なお、五元共重合体の共重合モル比は、エチレングリコール５０．０モル％、１，４−ブタンジオール４９．２モル％、ジエチレングリコール０．８モル％、ε−カプロラクトン１３．２モル％及びテレフタル酸８６．８モル％である。
孔径０．６ｍｍで孔数１９２個の芯鞘型複合紡糸口金を具えた複合溶融紡糸装置に、上記したポリエチレンテレフタレートと共重合ポリエステルを供給し、口金温度を２８０℃とし、ポリエチレンテレフタレート：共重合ポリエステル＝２．７：１（重量比）として、複合溶融紡糸を行い、同心状芯鞘型複合接着性繊維を得た。得られた芯鞘型複合熱接着性繊維１９２本が集束した糸条に、常法により冷却、延伸及び弛緩処理を施して、１６７０デシテックス／１９２フィラメントの熱接着性マルチフィラメント糸を得た。
Reference example 1
The polyethylene terephthalate used in Example 1 was prepared as a core component. As a sheath component, a copolymer polyester comprising a quaternary copolymer of ethylene glycol, 1,4-butanediol, diethylene glycol, ε-caprolactone and terephthalic acid (melting point 160 ° C., intrinsic viscosity [η] 0.65) was prepared. . The copolymerization molar ratio of the ternary copolymer was 50.0 mol% ethylene glycol, 49.2 mol% 1,4-butanediol, 0.8 mol% diethylene glycol, 13.2 mol% ε-caprolactone and It is 86.8 mol% of terephthalic acid.
The above-mentioned polyethylene terephthalate and copolymer polyester are supplied to a compound melt spinning apparatus having a core-sheath compound spinneret having a hole diameter of 0.6 mm and 192 holes, and the die temperature is set to 280 ° C. = 2.7: 1 (weight ratio), composite melt spinning was performed to obtain a concentric core-sheath type composite adhesive fiber. The obtained yarn with 192 core-sheath type composite heat-adhesive fibers bundled was subjected to cooling, stretching and relaxation treatments by a conventional method to obtain a heat-adhesive multifilament yarn of 1670 dtex / 192 filaments.
実施例１〜５及び参考例１で得られた熱接着性マルチフィラメント糸の引張強度（ｃＮ／ｄｔ）、切断伸度（％）及び毛羽立ち（個／１００万ｍ）を、以下の方法で評価した。その結果を表１に示した。
［引張強度（ｃＮ／ｄｔ）及び切断伸度（％）］
ＪＩＳ Ｌ−１０１３記載の方法の準拠し、島津製作所社製オートグラフＤＳＳ−５００を用い、つかみ間隔２５ｃｍ及び引張速度３０ｃｍ／分の測定条件で行った。
［毛羽立ち］
春日電機社製毛羽発見器Ｆ９−ＡＮ型を用い、引取速度３００ｍ／分で行った。
The tensile strength (cN / dt), the cut elongation (%), and the fluff (number / million m) of the heat-adhesive multifilament yarns obtained in Examples 1 to 5 and Reference Example 1 were evaluated by the following methods. did. The results are shown in Table 1.
[Tensile strength (cN / dt) and elongation at break (%)]
In accordance with the method described in JIS L-1013, an autograph DSS-500 manufactured by Shimadzu Corporation was used, and measurement was performed under measurement conditions of a grip interval of 25 cm and a tensile speed of 30 cm / min.
[Fuzzing]
It was carried out at a take-up speed of 300 m / min using Kasuga Denki Co., Ltd. fuzz detector F9-AN.
［表１］
━━━━━━━━━━━━━━━━━━━━━━━━━━
引張強度 切断伸度 毛羽立ち
━━━━━━━━━━━━━━━━━━━━━━━━━━
実施例１ ５．４１ １５．２ ２０
実施例２ ５．６１ １４．５ ２０
実施例３ ５．８２ １４．２ １８
実施例４ ６．２３ １３．５ １５
実施例５ ６．８５ １２．８ １６
参考例１ ４．２８ １８．３ ２５
━━━━━━━━━━━━━━━━━━━━━━━━━━
[Table 1]
━━━━━━━━━━━━━━━━━━━━━━━━━━
Tensile strength Cut elongation Fluff
━━━━━━━━━━━━━━━━━━━━━━━━━━
Example 1 5.41 15.2 20
Example 2 5.61 14.5 20
Example 3 5.82 14.2 18
Example 4 6.23 13.5 15
Example 5 6.85 12.8 16
Reference Example 1 4.28 18.3 25
━━━━━━━━━━━━━━━━━━━━━━━━━━
実施例及び参考例から分かるように、鞘成分としてε−カプロラクトンを含む共重合ポリエステルを採用した参考例に比べて、それを含まない共重合ポリエステルを採用した実施例の方が、引張強度、切断伸度及び毛羽立ちの点において優れている。 As can be seen from the examples and reference examples, compared to the reference examples employing copolymer polyesters containing ε-caprolactone as the sheath component, the examples employing the copolymer polyesters not containing them have a higher tensile strength and cutting strength. Excellent in terms of elongation and fluffing.
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