JPH06272111A - Elastomeric heat bonding fiber and its production - Google Patents
Elastomeric heat bonding fiber and its productionInfo
- Publication number
- JPH06272111A JPH06272111A JP5868593A JP5868593A JPH06272111A JP H06272111 A JPH06272111 A JP H06272111A JP 5868593 A JP5868593 A JP 5868593A JP 5868593 A JP5868593 A JP 5868593A JP H06272111 A JPH06272111 A JP H06272111A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- fiber
- component
- melting point
- thermoplastic elastomer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 104
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 39
- 230000008018 melting Effects 0.000 claims abstract description 39
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 27
- 238000009987 spinning Methods 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims description 61
- 229920001971 elastomer Polymers 0.000 claims description 40
- 239000000806 elastomer Substances 0.000 claims description 31
- 239000002131 composite material Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 abstract description 36
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000000306 component Substances 0.000 description 70
- 229920000728 polyester Polymers 0.000 description 31
- 239000011159 matrix material Substances 0.000 description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 19
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 16
- 230000001070 adhesive effect Effects 0.000 description 15
- -1 aromatic dicarboxylic acids Chemical class 0.000 description 14
- 229920001400 block copolymer Polymers 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 239000005060 rubber Substances 0.000 description 9
- 239000003963 antioxidant agent Substances 0.000 description 8
- 230000003078 antioxidant effect Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000002788 crimping Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000005979 thermal decomposition reaction Methods 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 239000008358 core component Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 150000002009 diols Chemical class 0.000 description 3
- 150000002334 glycols Chemical class 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003856 thermoforming Methods 0.000 description 3
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- VEIOBOXBGYWJIT-UHFFFAOYSA-N cyclohexane;methanol Chemical compound OC.OC.C1CCCCC1 VEIOBOXBGYWJIT-UHFFFAOYSA-N 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- VNGOYPQMJFJDLV-UHFFFAOYSA-N dimethyl benzene-1,3-dicarboxylate Chemical compound COC(=O)C1=CC=CC(C(=O)OC)=C1 VNGOYPQMJFJDLV-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 125000006289 hydroxybenzyl group Chemical group 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PXGZQGDTEZPERC-UHFFFAOYSA-N 1,4-cyclohexanedicarboxylic acid Chemical compound OC(=O)C1CCC(C(O)=O)CC1 PXGZQGDTEZPERC-UHFFFAOYSA-N 0.000 description 1
- RKMGAJGJIURJSJ-UHFFFAOYSA-N 2,2,6,6-Tetramethylpiperidine Substances CC1(C)CCCC(C)(C)N1 RKMGAJGJIURJSJ-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- MUXOBHXGJLMRAB-UHFFFAOYSA-N Dimethyl succinate Chemical compound COC(=O)CCC(=O)OC MUXOBHXGJLMRAB-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GWTCIAGIKURVBJ-UHFFFAOYSA-L dipotassium;dodecyl phosphate Chemical compound [K+].[K+].CCCCCCCCCCCCOP([O-])([O-])=O GWTCIAGIKURVBJ-UHFFFAOYSA-L 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- WPUMVKJOWWJPRK-UHFFFAOYSA-N naphthalene-2,7-dicarboxylic acid Chemical compound C1=CC(C(O)=O)=CC2=CC(C(=O)O)=CC=C21 WPUMVKJOWWJPRK-UHFFFAOYSA-N 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229940033623 potassium lauryl phosphate Drugs 0.000 description 1
- RMGVATURDVPNOZ-UHFFFAOYSA-M potassium;hexadecyl hydrogen phosphate Chemical compound [K+].CCCCCCCCCCCCCCCCOP(O)([O-])=O RMGVATURDVPNOZ-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000003330 sebacic acids Chemical class 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Landscapes
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はエラストマ−系熱接着複
合繊維と製法に関するものであり、特に繊維よりなるク
ッション材を熱成形して得られたクッション材は優れた
クッション性、常温および加熱下での耐久性とが得られ
るエラストマ−系熱接着複合繊維および製法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastomer-based heat-bonded composite fiber and a method for producing the same. In particular, a cushion material obtained by thermoforming a cushion material made of the fiber has excellent cushioning property, room temperature and under heating. And an elastomer-based heat-bonded composite fiber and a method for producing the same.
【０００２】[0002]
【従来の技術】現在、家具およびベッドなどのクッショ
ン材の分野で、発砲ウレタン、ポリエステル繊維詰綿、
及びポリエステル繊維を接着した樹脂綿やポリエステル
硬綿が知られている。2. Description of the Related Art Currently, in the field of cushion materials such as furniture and beds, foamed urethane, polyester fiber stuffed cotton,
Also known are resin cotton and polyester hard cotton to which polyester fibers are adhered.
【０００３】しかしながら、発泡ウレタンはクッション
としての耐久性は良好だが、床つき感が大きく、透湿性
に劣り蓄熱性があるため蒸れやすく、かつ、燃焼時の発
生熱量が大きいため難燃性付与にはハロゲン化物添加が
必要なため、火災時に有毒ガスの発生による中毒の問題
やリサイクルが困難なため焼却されるが、焼却炉の損傷
が大きく、かつ、有毒ガスの除去に経費が掛かる等の問
題がある。また、加工性は優れるが製造中に使用される
薬品の公害問題などもある。また、ポリエステル繊維詰
綿では繊維間が固定されていないため、使用時形態が崩
れたり、繊維が移動して、かつ、捲縮のへたりで嵩高性
の低下や弾力性の低下が問題になる。However, although urethane foam has good durability as a cushion, it has a great feeling of flooring, is poor in moisture permeability and has a heat storage property, and is easily steamed, and since it generates a large amount of heat during combustion, it imparts flame retardancy. Since it requires the addition of halides, it is incinerated due to the problem of poisoning due to the generation of toxic gas during a fire and the difficulty of recycling, but the incinerator is seriously damaged, and the cost of removing toxic gas is high. There is. Further, although it has excellent processability, it also has a problem of pollution of chemicals used during manufacturing. In addition, since the fibers are not fixed to each other in the polyester fiber wadding, the form may collapse during use, the fibers may move, and the crimp may cause the deterioration of bulkiness and elasticity. .
【０００４】ポリエステル繊維を接着剤で接着した樹脂
綿、例えば接着剤にゴム系を用いたものとして特開昭６
０−１１３５２号公報、特開昭６１−１４１３８８号公
報、特開昭６１−１４１３９１号公報等がある。又、ウ
レタンを用いたものとして特開昭６１−１３７７３２号
公報等がある。これらのクッション材は耐久性に劣り、
且つリサイクルも出来ない等の問題、及び加工性の煩雑
さや製造中に使用される薬品の公害問題などもある。As a resin cotton in which polyester fibers are adhered with an adhesive, for example, a rubber-based adhesive is used, Japanese Patent Application Laid-Open No.
0-11352, JP-A 61-141388, JP-A 61-141391 and the like. Further, as a method using urethane, there is JP-A-61-137732. These cushion materials have poor durability,
In addition, there are problems such as not being able to recycle, complexity of processability and pollution of chemicals used during manufacturing.
【０００５】ポリエステル硬綿、例えば特開昭５８−３
１１５０号公報、特開平２−１５４０５０号公報、特開
平３−２２０３５４号公報等があるが、用いている熱接
着繊維の接着成分が脆い非晶性のポリマ−を用いるため
（例えば特開昭５８−１３６８２８号公報、特開平３−
２４９２１３号公報等）接着部分が脆く、使用中に接着
部分が簡単に破壊されて形態や弾力性が低下するなどの
耐久性に劣る問題がある。改良法として、交絡処理する
方法が特開平４−２４５９６５号公報等で提案されてい
るが、接着部分の脆さは解決されず弾力性の低下が大き
い問題がある。また、加工時の煩雑さもある。更には接
着部分が変形しにくくソフトなクッション性を付与しに
くい問題もある。このため、接着部分を柔らかい、且つ
変形しても回復するポリエステルエラストマ−を用いた
熱接着繊維を改良方法として特開平４−２４０２１９号
公報で提案されている。この繊維に使われるポリエステ
ルエラストマ−はハ−ドセグメントの酸成分にテレフタ
ル酸を５０〜８０モル％含有し、ソフトセグメントとし
てのポリアルキレングリコ−ルの含有量が３０〜５０重
量％に限定し、他の酸成分組成として、例えば、特公昭
６０−１４０４号公報に記載された繊維と同様にイソフ
タル酸等を含有させ非晶性を増すことにより融点を１８
０℃以下として、熱接着成形温度を低く押さえ、低分子
量化により低溶融粘度として流動性を良くし、熱接着部
点の形成を良くすることが提案されているが、このよう
な組成では、元々加熱下では塑性変形しやすい組成のう
え、熱成形によりポリエステルエラストマ−が流動し
て、熱接着繊維の表面に止まらず脆い非弾性成分のみが
繊維構造体のマトリックス繊維と接合点間を繋いでお
り、大きい力や変形で容易に接合間を繋ぐ脆い非弾性成
分からなる繊維が破壊され、繊維構造体のクッション性
や耐久性が失われる問題がある。Polyester hard cotton, for example, JP-A-58-3
1150, JP-A-2-154050, JP-A-3-220354, etc., but since an amorphous polymer having a brittle adhesive component of the heat-bonding fiber used is used (for example, JP-A-58). -136828, Japanese Patent Application Laid-Open No. 3-
However, there is a problem in that durability is poor such that the bonded portion is brittle and the bonded portion is easily broken during use and the form and elasticity are reduced. As an improved method, a method of entanglement treatment has been proposed in Japanese Patent Laid-Open No. 4-245965, but there is a problem that the brittleness of the bonded portion is not solved and the elasticity is largely reduced. In addition, there is complexity during processing. Further, there is a problem that the bonded portion is hard to be deformed and soft cushioning is hard to be imparted. For this reason, Japanese Patent Laid-Open No. 4-240219 proposes an improved method for a heat-bonded fiber using a polyester elastomer that is soft even at the bonded portion and recovers even when deformed. The polyester elastomer used for this fiber contains 50 to 80 mol% of terephthalic acid in the acid component of the hard segment, and the content of polyalkylene glycol as the soft segment is limited to 30 to 50% by weight. As other acid component composition, for example, isophthalic acid or the like is added to increase the amorphousness to increase the melting point to 18 as in the fiber described in JP-B-60-1404.
It is proposed that the temperature is 0 ° C. or lower, the heat-bonding molding temperature is kept low, the melt viscosity is improved by lowering the molecular weight to improve the fluidity, and the formation of the heat-bonding joint points is improved. Originally, it has a composition that is easily plastically deformed under heating, and the polyester elastomer flows by thermoforming, so that only the brittle non-elastic component does not stop on the surface of the heat-bonded fiber and connects the matrix fiber of the fiber structure and the bonding point. However, there is a problem that the fibers made of brittle inelastic components that easily connect the joints are destroyed by a large force or deformation, and the cushioning property and the durability of the fiber structure are lost.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、上記従来技
術の問題点を改良し、優れたクッション性、優れた耐熱
耐久性を有する座り心地の快適なクッション材を容易に
製造するに適したエラストマ−系熱接着繊維を提供する
ことを目的とする。DISCLOSURE OF THE INVENTION The present invention has been made to improve the above-mentioned problems of the prior art, and is suitable for easily manufacturing a comfortable cushioning material having excellent cushioning property and excellent heat resistance and durability. It is an object to provide an elastomer-based heat-bonded fiber.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
の手段、即ち本発明は、熱可塑性エラストマーよりなる
熱接着成分と非熱接着成分との複合繊維であり、熱接着
成分がソフトセグメント含有量３０重量％以上の熱可塑
性エラストマーであり、非熱接着成分が上記熱接着成分
の融点より３０℃以上高い融点を有する熱可塑性エラス
トマーであることを特徴とするエラストマー系熱接着繊
維および熱接着成分の熱可塑性エラストマ−と、熱接着
成分の融点より少なくとも３０℃高い融点の非熱接着成
分の熱可塑性エラストマ−を、非熱接着成分の融点より
少なくとも２０℃以上高い温度で複合紡糸することを特
徴とするエラストマ−系熱接着繊維の製法である。[Means for Solving the Problems] Means for solving the above problems, that is, the present invention is a composite fiber of a heat-adhesive component and a non-heat-adhesive component made of a thermoplastic elastomer, wherein the heat-adhesive component contains a soft segment. 30% by weight or more of a thermoplastic elastomer, and the non-thermoadhesive component is a thermoplastic elastomer having a melting point higher than the melting point of the thermoadhesive component by 30 ° C. or more, and an elastomer-based thermoadhesive fiber and a thermoadhesive component. And a thermoplastic elastomer of a non-thermo-adhesive component having a melting point higher than that of the thermo-adhesive component by at least 20 ° C. or more than the melting point of the non-thermo-adhesive component. Is a method for producing an elastomer-based heat-bonded fiber.
【０００８】本発明の熱接着繊維は、マトリックス繊維
間を伸長回復性のある３次元ネットワ−ク構造とする目
的のため、熱接着成分と非熱接着成分は共に熱可塑性エ
ラストマ−とする必要がある。熱可塑性エラストマ−と
しては、ソフトセグメントとして分子量３００〜５００
０のポリエ−テル系グリコ−ル、ポリエステル系グリコ
−ル、ポリカ−ボネ−ト系グリコ−ル等をブロック共重
合したポリエステル系エラストマ−、ポリアミド系エラ
ストマ−、ポリウレタン系エラストマ−などが挙げられ
る。が、本発明の最も好ましい利用形態から、クッショ
ン材のマトリックスにポリエステル繊維を用いる場合が
多いので、熱可塑性エラストマ−を接着性の良いポリエ
ステル系エラストマ−とするのが好ましい。ポリエステ
ル系エラストマ−としては、熱可塑性ポリエステルをハ
−ドセグメントとし、ポリアルキレンジオ−ルをソフト
セグメントとするポリエステルエ−テルブロック共重合
体、または、脂肪族ポリエステルをソフトセグメントと
するポリエステルエステルブロック共重合体が例示でき
る。ポリエステルエ−テルブロック共重合体のより具体
的な事例としては、テレフタル酸、イソフタル酸、ナフ
タレン２・６ジカルボン酸、ナフタレン２・７ジカルボ
ン酸、ジフェニル４・４’ジカルボン酸等の芳香族ジカ
ルボン酸、１・４シクロヘキサンジカルボン酸等の脂環
族ジカルボン酸、琥珀酸、アジピン酸、セバチン酸ダイ
マ−酸等の脂肪族ジカルボン酸または、これらのエステ
ル形成性誘導体などから選ばれたジカルボン酸の少なく
とも１種と、１・４ブタンジオ−ル、エチレングリコ−
ル、トリメチレングリコ−ル、テトレメチレングリコ−
ル、ペンタメチレングリコ−ル、ヘキサメチレングリコ
−ル等の脂肪族ジオ−ル、１・１シクロヘキサンジメタ
ノ−ル、１・４シクロヘキサンジメタノ−ル等の脂環族
ジオ−ル、またはこれらのエステル形成性誘導体などか
ら選ばれたジオ−ル成分の少なくとも１種、および平均
分子量が約３００〜５０００のポリエチレングリコ−
ル、ポリプロピレングリコ−ル、ポリテトラメチレング
リコ−ル、エチレンオキシド−プロピレンオキシド共重
合体等のポリアルキレンジオ−ルのうち少なくとも１種
から構成される三元ブロック共重合体である。ポリエス
テルエステルブロック共重合体としては、上記ジカルボ
ン酸とジオ−ル及び平均分子量が約３００〜３０００の
ポリラクトン等のポリエステルジオ−ルのうち少なくと
も各１種から構成される三元ブロック共重合体である。
熱接着性、耐加水分解性、伸縮性、耐熱性等を考慮する
と、ジカルボン酸としてはテレフタル酸、または、及び
ナフタレン２・６ジカルボン酸、ジオ−ル成分としては
１・４ブタンジオ−ル、ポリアルキレンジオ−ルとして
はポリテトラメチレングリコ−ルの３元ブロック共重合
体または、ポリエステルジオ−ルとしてポリラクトンの
３元ブロック共重合体が特に好ましい。In the heat-bonding fiber of the present invention, both the heat-bonding component and the non-heat-bonding component are required to be thermoplastic elastomers for the purpose of forming a three-dimensional network structure having elongation recovery between the matrix fibers. is there. The thermoplastic elastomer has a molecular weight of 300 to 500 as a soft segment.
No. 0 polyester-based glycols, polyester-based glycols, polyester-based elastomers obtained by block copolymerizing polycarbonate-based glycols, etc., polyamide-based elastomers, polyurethane-based elastomers, and the like. However, from the most preferable use form of the present invention, since polyester fibers are often used for the matrix of the cushion material, it is preferable to use the polyester elastomer having good adhesiveness as the thermoplastic elastomer. As the polyester elastomer, a polyester ether block copolymer having a thermoplastic polyester as a hard segment and a polyalkylenediol as a soft segment, or a polyester ester block copolymer having an aliphatic polyester as a soft segment A polymer can be illustrated. More specific examples of the polyester ether block copolymer include aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, naphthalene 2.6 dicarboxylic acid, naphthalene 2.7 dicarboxylic acid, and diphenyl 4.4'dicarboxylic acid. At least one of alicyclic dicarboxylic acids such as 1,4-cyclohexanedicarboxylic acid, aliphatic dicarboxylic acids such as succinic acid, adipic acid, sebacic acid dimer acid, and dicarboxylic acids selected from ester-forming derivatives thereof Seeds and 1.4 butanediol, ethylene glycol
, Trimethylene glycol, tetremethylene glycol
Aliphatic diols such as phenol, pentamethylene glycol and hexamethylene glycol, alicyclic diols such as 1.1 cyclohexane dimethanol and 1.4 cyclohexane dimethanol, or these At least one diole component selected from ester-forming derivatives and polyethylene glycol having an average molecular weight of about 300 to 5,000.
It is a ternary block copolymer composed of at least one of polyalkylenediol such as propylene, polypropylene glycol, polytetramethylene glycol, and ethylene oxide-propylene oxide copolymer. The polyester ester block copolymer is a ternary block copolymer composed of at least one of the above dicarboxylic acids, diol, and polyester diol such as polylactone having an average molecular weight of about 300 to 3,000. .
Considering heat adhesion, hydrolysis resistance, stretchability, heat resistance, etc., terephthalic acid as dicarboxylic acid, or naphthalene 2.6 dicarboxylic acid, 1.4 butanediol as diole component, and poly The alkylene diol is particularly preferably a terpolymer block copolymer of polytetramethylene glycol or the terpolymer block copolymer of polylactone as the polyester diol.
【０００９】本発明の熱接着繊維を構成する熱接着成分
を成す熱可塑性エラストマ−は、弾性回復限界歪みがお
おきく、大きい力による大変形を受けても塑性変形を起
こしにくく、ゴム弾性の発現による回復性が良好で、結
晶構造形成による疑似架橋点の耐熱性がよい必要からソ
フトセグメント含有量は３０〜８０重量％である。ソフ
トセグメント含有量が３０重量％未満では、エラストマ
−特有のゴム弾性が充分発現し難く、クッション材に成
形した場合、弾性回復限界歪みが少ないため、大きい力
による大変形を受けると変形しないマトリックス繊維と
の熱接着点に応力集中が起こり塑性変形を起こしやすい
ので、クッション材としての繊維構造体のクッション性
や抗へたり性が劣り好ましくない。他方、ソフトセグメ
ント含有量が８０重量％を越えると、融点の低下が大き
くなり、低温での回復性は向上するが、ハ−ドセグメン
ト含有量が少なくなり、結晶構造形成による疑似架橋点
の耐熱性が低下するため、比較的低い温度、例えば４０
℃を越える温度で塑性変形を起こし、クッション材とし
た場合の耐熱抗へたり性が低下するので好ましくない。
本発明の熱接着成分における好ましいソフトセグメント
含有量は４０〜７０重量％、より好ましくは４５〜６５
重量％である。なお、ソフトセグメントの平均分子量は
３００〜５０００が使用できるが特にハ−ドセグメント
の耐熱性を向上させるため、繰り返し単位を大きくする
場合、好ましくは５００〜４０００、より好ましくは１
０００〜３０００である。なお、本発明に好ましいポリ
エステルエラストマ−は例えば、特開昭５５−１２０６
２６号公報等の従来技術で得ることができる。The thermoplastic elastomer constituting the heat-adhesive component of the heat-adhesive fiber of the present invention has a large elastic recovery limit strain, does not easily undergo plastic deformation even when subjected to large deformation by a large force, and exhibits rubber elasticity. The content of the soft segment is 30 to 80% by weight because the recoverability is good and the heat resistance of the pseudo-crosslinking point due to the formation of the crystal structure is good. When the soft segment content is less than 30% by weight, the rubber elasticity peculiar to the elastomer is hard to be sufficiently expressed, and when the cushion material is molded, since the elastic recovery limit strain is small, the matrix fiber does not deform when subjected to a large deformation by a large force. Since stress concentration is likely to occur at the heat-bonding point with and plastic deformation is likely to occur, the cushioning property and anti-sagging property of the fibrous structure as the cushioning material are poor, which is not preferable. On the other hand, when the content of the soft segment exceeds 80% by weight, the melting point is largely lowered and the recoverability at low temperature is improved, but the content of the hard segment is decreased, and the heat resistance of the pseudo-crosslinking point due to the formation of the crystal structure is reduced. To a relatively low temperature, for example 40
Plastic deformation occurs at a temperature above 0 ° C, and the heat resistance and sag resistance of the cushion material is lowered, which is not preferable.
The preferred soft segment content in the heat-adhesive component of the present invention is 40 to 70% by weight, more preferably 45 to 65%.
% By weight. The average molecular weight of the soft segment may be 300 to 5,000, but in order to improve the heat resistance of the hard segment, when the repeating unit is increased, it is preferably 500 to 4,000, more preferably 1
000-3000. A polyester elastomer preferable for the present invention is, for example, JP-A-55-1206.
It can be obtained by a conventional technique such as Japanese Patent No. 26.
【００１０】本発明の熱接着繊維を構成する非熱接着成
分は、熱接着成分を流動させ熱接着点を形成させる際、
流動させず、マトリックス繊維間を繋ぐ伸長回復性のあ
る３次元ネットワ−ク構造を形成させる目的のため、非
熱接着成分の融点は熱接着成分の融点より少なくとも３
０℃以上高くする。熱接着成分の融点より３０℃未満高
い場合は、熱接着させる温度は、熱接着成分の融点より
１０〜３０℃高い温度で熱接着成分を流動させ熱接着点
を形成させるので、その際、非熱接着成分も流動して、
マトリックス繊維間を繋ぐ伸長回復性のある３次元ネッ
トワ−ク構造を形成できなくなるので好ましくない。本
発明の非熱接着繊維の融点は、熱接着成分の融点より３
５℃以上高くするのが好ましく、４０℃以上高くするの
がより好ましい。なお、非熱接着成分が形成するマトリ
ックス繊維間を繋ぐ伸長回復性のある３次元ネットワ−
ク構造は弾性回復限界歪みが非弾性ポリマ−繊維よりお
おきく、大きい力による大変形を受けてもゴム弾性の発
現による回復性が良好で、結晶構造形成による疑似架橋
点の耐熱性がよい必要からソフトセグメント含有量は少
なくとも５重量％とするのがよい。ソフトセグメント含
有量が５重量％未満ではエラストマ−特有のゴム弾性が
発現し難く、クッション材に成形した場合、マトリック
ス繊維間を繋ぐ３次元ネットワ−ク構造の伸縮機能が劣
り、クッション材としての繊維構造体のクッション性や
抗へたり性が劣り好ましくない。他方、ソフトセグメン
ト含有量が５０重量％を越えると、融点の低下が大きく
なり、熱接着成分の融点を下げる必要から、溶融紡糸時
に融着の問題が発生すると共に、低温での回復性は向上
するがハ−ドセグメント含有量が少なくなり、結晶構造
形成による疑似架橋点の耐熱性が低下するためクッショ
ン材とした場合の耐熱抗へたり性が低下するので好まし
くない。本発明の非熱接着成分における好ましいソフト
セグメント含有量は５〜５０重量％、より好ましくは１
０〜４５重量％である。ソフトセグメントの平均分子量
はハ−ドセグメントの耐熱性を向上させるため、繰り返
し単位を大きくするのがよく、好ましくは５００〜４０
００、より好ましくは１０００〜３０００である。な
お、ハ−ドセグメントの酸成分に結晶性を低下させる成
分、例えばイソフタル酸等を含有させると塑性変形し易
く、かつ融点も低下するので、クッション材としたとき
の耐熱性や耐久性が低下する原因になるので極力少なく
するのが好ましく、含有させないのがより好ましい。
尚、本発明における好ましいポリエステルエ−テルの分
子量は、４０℃フェノ−ル／テトラクロルエタン混合溶
媒中で測定した相対粘度（ηsp/c）が、熱接着成分では
１．８以上である。１．８未満では、流動性は良くなる
が接着点の回復性が低下して繊維構造体としたときの耐
熱性や耐久性が低下する。２．５以上では流動性が低下
し、熱接着点形成が不充分となりやすい。熱接着成分の
より好ましい相対粘度は２．０以上２．５以下である。
他方、伸縮性の３次元ネットワ−ク構造を形成する非接
着成分は、耐熱性を付与されるため、ハ−ドセグメント
含有量が熱接着成分より多くなり、相対粘度はやや低く
なる。好ましい相対粘度は１．０以上、より好ましくは
１．５以上とすることで、回復性とタフさを付与でき
る。The non-heat-adhesive component which constitutes the heat-adhesive fiber of the present invention, when the heat-adhesive component is flowed to form a heat-adhesion point,
For the purpose of forming a three-dimensional network structure that does not flow and connects the matrix fibers with each other and has elongation recovery, the melting point of the non-heat-adhesive component is at least 3 times higher than that of the heat-adhesive component.
Raise it to 0 ° C or higher. When the temperature is higher than the melting point of the heat-bonding component by less than 30 ° C., the temperature of heat-bonding is 10 to 30 ° C. higher than the melting point of the heat-bonding component to cause the heat-bonding component to flow to form a heat-bonding point. The heat-adhesive component also flows,
It is not preferable because it is impossible to form a three-dimensional network structure having elongation recovery that connects matrix fibers. The melting point of the non-heat-bonding fiber of the present invention is 3 than the melting point of the heat-bonding component.
The temperature is preferably raised by 5 ° C or higher, more preferably 40 ° C or higher. A three-dimensional network with elongation recovery that connects the matrix fibers formed by the non-thermal adhesive component.
The elastic structure of the elastic structure is larger than that of non-elastic polymer fibers, and even if it undergoes a large deformation due to a large force, the recoverability is good due to the development of rubber elasticity, and the heat resistance of the pseudo-crosslinking point due to the formation of the crystal structure is good. The soft segment content is preferably at least 5% by weight. When the soft segment content is less than 5% by weight, the rubber elasticity peculiar to the elastomer is difficult to develop, and when formed into a cushion material, the expansion and contraction function of the three-dimensional network structure that connects the matrix fibers is poor, and the fiber as a cushion material. The structure is inferior in cushioning property and anti-sagging property, which is not preferable. On the other hand, when the content of the soft segment exceeds 50% by weight, the melting point is greatly lowered and the melting point of the heat-adhesive component is required to be lowered, which causes a problem of fusion during melt spinning and improves recoverability at low temperature. However, the content of the hard segment is reduced and the heat resistance at the pseudo-crosslinking point due to the formation of the crystal structure is lowered, so that the heat resistance and fatigue resistance of the cushion material is lowered, which is not preferable. The content of the soft segment in the non-heat-adhesive component of the present invention is preferably 5 to 50% by weight, more preferably 1
It is 0 to 45% by weight. Since the average molecular weight of the soft segment improves the heat resistance of the hard segment, it is preferable to increase the repeating unit, and preferably 500 to 40.
00, more preferably 1000 to 3000. If the acid component of the hard segment contains a component that reduces crystallinity, such as isophthalic acid, plastic deformation is likely to occur, and the melting point also lowers. Therefore, the heat resistance and durability of the cushioning material deteriorate. Therefore, it is preferable to reduce the amount as much as possible, and it is more preferable not to include it.
The molecular weight of the preferred polyester ether in the present invention is such that the relative viscosity (η sp / c ) measured in a 40 ° C. phenol / tetrachloroethane mixed solvent is 1.8 or more for the heat-adhesive component. When it is less than 1.8, the fluidity is improved, but the recoverability of the bonding points is reduced, and the heat resistance and durability of the fiber structure are reduced. When it is 2.5 or more, the fluidity is lowered, and the formation of thermal bonding points tends to be insufficient. The more preferable relative viscosity of the heat-adhesive component is 2.0 or more and 2.5 or less.
On the other hand, since the non-adhesive component forming the stretchable three-dimensional network structure is endowed with heat resistance, the content of the hard segment becomes larger than that of the thermal adhesive component, and the relative viscosity becomes slightly lower. When the relative viscosity is preferably 1.0 or more, more preferably 1.5 or more, recoverability and toughness can be imparted.
【００１１】本発明の熱接着繊維を構成する熱可塑性エ
ラストマ−中のソフトセグメントの熱劣化を抑制するた
め、熱分解で発生するラジカルをトラップできる立体障
害性メチル基を多数含有するヒンダ−ド系抗酸化剤を含
有させるのが好ましい。該ヒンダ−ド系抗酸化剤として
は、ヒンダ−ドフェノ−ル系とヒンダ−ドアミン系があ
り、好ましい平均分子量は３００〜５０００、より好ま
しくは６００〜４０００である。平均分子量が３００未
満のものは、加熱時昇華して消失し易いので好ましくな
い。また、８０００以上の高分子量化した重縮合物はエ
ラストマ−中でのランダムマイグレ−ションが不充分に
なりやすく練込み方法に工夫が必要となる。具体例とし
ては、ヒンダ−ドフェノ−ル系では、１・３・５・トリ
メチル・２・４・６・トリス（３・５・ジ・ｔ・ブチル
・４・ヒドロキシベンジル）ベンゼン、メチルスチレン
／フェノ−ル系重縮合体等が特に好ましい。ヒンダ−ド
アミン系では、分子量１０００以上の琥珀酸ジメチル・
１・（２・ヒドロキシエチル）４・ヒドロキシ・２・２
・６・６・テトラメチルピペリジン系重縮合体等が特に
好ましい。本発明では、該抗酸化剤をソフトセグメント
含有量当たり０．５〜１０重量％含有させるのが好まし
い。０．５重量％未満では熱劣化抑制効果が少なくな
り、クッション材に熱成形加工する際、通常、空気中、
２００℃以上の温度で長時間熱処理すると、エラストマ
−が熱劣化により爆発的に分解し、クッション構造体そ
のものが劣化物になるため、または、爆発的熱分解を生
じる前の段階においても、ゴム弾性を生むソフトセグメ
ントの分子鎖は熱分解で短くなり、または、ネットワ−
ク構造が切断され伸縮性が低下していき、爆発的熱分解
直前では、低分子量化した全く伸縮性を持たないワック
ス状物となるので、エラストマ−組成や加工条件が極め
て制限される。特にソフトセグメント含有量が多くなる
ほどより低温で、より短時間で爆発的熱分解を生じるの
で、クッション材としてのクッション性、常温および加
熱下での耐久性を向上させるエラストマ−組成や加工条
件の最適化が極めて困難となるので好ましくない。他
方、１０重量％を越えると繊維表面に該抗酸化剤がブリ
−ドアウトし易くなり、クッション材とするために混合
開繊してウエッブに加工する際、析出した抗酸化剤が熱
接着繊維の糸糸の摩擦係数を著しく高くして開繊不良と
なり熱接着繊維をマトリックスの繊維と均一に混繊する
ことが困難となり、クッション材としての特性が不均一
になり、かつ、平均特性も低下する。極端な場合には、
糸間のきしみが大きくなり予備開繊も出来なくなる等の
問題があり、好ましくない。また、高分子量のものはブ
リ−ドアウトし難くなるが、コストが著しく高くなるた
め一般的ではない。本発明の好ましいソフトセグメント
含有量当たりの抗酸化剤の含有量は０．５〜１０重量
％、より好ましくは１〜３重量％である。本発明の特に
好ましい抗酸化剤付与条件においては、ソフトセグメン
ト含有量が６０重量％以上のエラストマ−においても、
空気中２１０℃の温度で１５分未満の時間では爆発的熱
分解を生じないため、極めて加工条件の選択幅が広く取
れ、かつ、ソフトセグメントの分子鎖切断が少ないため
良好な伸縮性を保持できるので、優れた性能のクッショ
ン材を作成できる。さらに熱分解が抑制される効果はエ
ラストマ−のハ−ドセグメントの繰り返し単位を多くし
て疑似架橋点の耐熱性を向上させ、融点が高くなる割合
に応じ、より高い加工温度で熱接着できるため、作成し
たクッション材の接着点の耐熱性を向上させ、そのう
え、高度の伸縮性をも保持したものとできるので、極め
て優れた性能のクッション材を作成できる。このような
エラストマ−の耐熱性を評価するための手段として、示
差走査型熱量計（ＤＳＣ）による昇温させつつ、あるい
は一定温度にホ−ルドして発熱開始温度、または発熱開
始時間を測定することでエラストマ−の耐熱性を知るこ
とができる。なお、本発明に於ける好ましい抗酸化剤の
添加方法としては、重合時多量に添加すると昇華して重
合缶の詰まりなどのトラブルとなり、かつ、添加効果が
激減するので、好ましくは、重合後加圧下で練り込む
か、単軸または２軸でダルメ−ジ等の高い混合機能をも
つスクリュウで練り込むのが良い。しかして、本発明の
熱接着繊維を構成する熱可塑性エラストマ−には紫外線
吸収剤を含有させない。このため、本発明の熱接着繊維
を溶融紡糸する際および熱融着処理時にも、紫外線吸収
剤からなる有毒な発煙ガスは発生しないので作業環境を
著しく汚染することはない。A hindered system containing a large number of sterically hindered methyl groups capable of trapping radicals generated by thermal decomposition in order to suppress thermal deterioration of the soft segment in the thermoplastic elastomer constituting the thermally adhesive fiber of the present invention. It is preferable to include an antioxidant. The hindered antioxidant includes hindered phenol type and hindered amine type, and the average molecular weight is preferably 300 to 5,000, more preferably 600 to 4,000. A compound having an average molecular weight of less than 300 is not preferable because it easily sublimes upon heating and disappears. Further, a polycondensate having a high molecular weight of 8,000 or more tends to cause insufficient random migration in the elastomer, and a devising method is required. As a specific example, in a hindered phenol system, 1,3,5, trimethyl, 2,4,6, tris (3,5, di, t, butyl, 4, hydroxybenzyl) benzene, methylstyrene / pheno In particular, a polycondensation system and the like are preferable. In the hindered amine system, dimethyl succinate with a molecular weight of 1000 or more
1 ・ (2 ・ Hydroxyethyl) 4 ・ Hydroxy ・ 2 ・ 2
-6.6-Tetramethylpiperidine-based polycondensate and the like are particularly preferable. In the present invention, the antioxidant is preferably contained in an amount of 0.5 to 10% by weight based on the soft segment content. If it is less than 0.5% by weight, the effect of suppressing the thermal deterioration is reduced, and when the cushion material is thermoformed, it is usually used in air.
When heat-treated at a temperature of 200 ° C or higher for a long time, the elastomer explosively decomposes due to thermal deterioration and the cushion structure itself becomes a deteriorated product, or even before the explosive thermal decomposition occurs, rubber elasticity The molecular chain of the soft segment that produces
The elastomeric composition and processing conditions are extremely limited, because the wax structure is cut and the elasticity decreases, and immediately before explosive thermal decomposition, the wax-like substance has a low molecular weight and has no elasticity. In particular, as the soft segment content increases, explosive thermal decomposition occurs at a lower temperature in a shorter time, so the cushioning property as a cushioning material and the elastomer composition and processing conditions that improve durability at room temperature and under heating are optimized. It is not preferable because it becomes extremely difficult to make it. On the other hand, when the content exceeds 10% by weight, the antioxidant easily bleeds out on the fiber surface, and when the mixed fiber is opened for processing into a web to form a cushioning material, the antioxidant that has precipitated out of the heat-bonded fiber. The friction coefficient of the yarn becomes extremely high, resulting in poor spreading, making it difficult to uniformly mix the heat-bonded fibers with the fibers of the matrix, making the properties as a cushioning material non-uniform, and also reducing the average properties. . In extreme cases,
There is a problem that the creaking between the yarns becomes large and pre-opening cannot be performed, which is not preferable. In addition, a polymer having a high molecular weight is difficult to bleed out, but it is not general because the cost is significantly increased. The content of the antioxidant based on the preferred soft segment content of the present invention is 0.5 to 10% by weight, more preferably 1 to 3% by weight. Under the particularly preferable antioxidant application conditions of the present invention, even in an elastomer having a soft segment content of 60% by weight or more,
Explosive thermal decomposition does not occur at a temperature of 210 ° C in air for less than 15 minutes, so that a wide range of processing conditions can be selected, and good stretchability can be maintained because there are few molecular chain breaks in the soft segment. Therefore, a cushion material with excellent performance can be created. Furthermore, the effect of suppressing thermal decomposition is that the number of repeating units of the hard segment of the elastomer is increased to improve the heat resistance of the pseudo-crosslinking point, and the heat bonding can be performed at a higher processing temperature depending on the proportion of the melting point increasing. Since it is possible to improve the heat resistance at the bonding point of the prepared cushioning material and also maintain a high degree of stretchability, a cushioning material with extremely excellent performance can be prepared. As a means for evaluating the heat resistance of such an elastomer, the heat generation start temperature or heat generation start time is measured while raising the temperature by a differential scanning calorimeter (DSC) or by holding it at a constant temperature. Therefore, the heat resistance of the elastomer can be known. The preferred addition method of the antioxidant in the present invention is that when added in a large amount during the polymerization, it causes sublimation and troubles such as clogging of the polymerization vessel, and the effect of addition is drastically reduced. It is better to knead under pressure, or to knead with a screw having a high mixing function such as uniaxial or biaxial dulling. Therefore, the thermoplastic elastomer constituting the heat-bonded fiber of the present invention does not contain an ultraviolet absorber. Therefore, no toxic fuming gas consisting of the ultraviolet absorber is generated during the melt-spinning of the heat-adhesive fiber of the present invention and the heat-sealing treatment, so that the working environment is not significantly polluted.
【００１２】本発明の熱可塑性エラストマ−からなる熱
接着繊維は、マトリックス繊維との接触部を熱接着成分
を溶融流動させて接着点を形成してクッション材を作成
する目的で使用するので、該熱接着成分は、少なくとも
複合繊維表面の５０％以上、好ましくは繊維表面全体を
占めることで、接触部の全てで熱接着でき、クッション
材としては、マトリックス繊維とのネットワ−ク構造が
伸縮性の優れた熱可塑性エラストマ−を介し形成される
ので、どの様な方向から大きい力や大変形を与えられて
も、伸縮性の優れた熱接着点と複合繊維の３次元ネット
ワ−ク形成部分が容易に変形して、マトリックス繊維は
少ししか変形しなくても、該接着点を介しネットワ−ク
構造全体に伝播して、構造体として力や歪みを吸収でき
るため、マトリックス繊維の受けるダメ−ジを著しく軽
減することができ、次いで変形力が解除されると、該熱
可塑性エラストマ−のゴム弾性が発現して元の形状に復
元するため耐久性がすぐれ、この挙動が適度の反発力と
して発現し、優れたクッション性をしめす。該熱接着成
分が弾性複合繊維表面の５０％未満では、上記該接着点
が少なくなるので構造体の耐久性やクッション性が劣る
ものとなるので好ましくない。なお、本発明の繊維構造
は公知の方法、例えばサイドバイサイド型やシ−スコア
型等の複合紡糸により形成でき、ついで延伸、巻縮付与
して所望の繊維長さに切断して得ることが出来る。な
お、複合紡糸の際、熱接着成分の熱可塑性エラストマ−
と、熱接着成分の融点より少なくとも３０℃高い融点の
非熱接着成分の熱可塑性エラストマ−を、非熱接着成分
の融点より少なくとも２０℃以上高い温度で複合紡糸す
ることが必要である。２０℃未満では、バラス効果が著
しくなり、かつゴム弾性が発現して紡糸張力が変動し、
吐出糸条に太細斑が発生して正常な紡糸が困難となる。
他方、１００℃以上融点より高い紡糸温度ではソフトセ
グメントの熱分解が著しくなり、熱可塑性エラストマ−
のゴム弾性が著しく低下するので好ましくない。好まし
い紡糸温度は非熱接着成分の融点より少なくとも３０℃
以上高い温度、より好ましくは４０℃〜８０℃融点より
高い温度である。The thermoadhesive fiber comprising the thermoplastic elastomer of the present invention is used for the purpose of preparing a cushioning material by melting and flowing the thermoadhesive component at the contact portion with the matrix fiber to form an adhesive point, and The heat-adhesive component occupies at least 50% of the surface of the composite fiber, preferably the entire fiber surface, so that the heat-bonding can be carried out at all contact portions, and the cushioning material has a stretchable network structure with the matrix fiber. Since it is formed through an excellent thermoplastic elastomer, no matter what direction it is subjected to a large force or large deformation, the heat-bonding points with excellent stretchability and the three-dimensional network forming part of the composite fiber are easy. Even if the matrix fiber is slightly deformed, the matrix fiber propagates to the entire network structure through the bonding points and can absorb force and strain as a structure, so that the matrix fiber can be absorbed. The damage that the fiber receives can be remarkably reduced, and when the deforming force is then released, the rubber elasticity of the thermoplastic elastomer is developed and the thermoplastic elastomer is restored to its original shape, resulting in excellent durability. Appears as a moderate repulsive force, and exhibits excellent cushioning properties. When the heat-adhesive component is less than 50% of the surface of the elastic composite fiber, the number of the above-mentioned adhesion points is reduced, and the durability and cushioning property of the structure are deteriorated, which is not preferable. The fiber structure of the present invention can be formed by a known method, for example, by side-by-side type or sheath-core type composite spinning, and then stretched and crimped to obtain a desired fiber length. During the composite spinning, the thermoplastic elastomer of the heat-adhesive component is used.
And the thermoplastic elastomer of the non-heat-adhesive component having a melting point at least 30 ° C. higher than the melting point of the heat-adhesive component must be subjected to composite spinning at a temperature at least 20 ° C. higher than the melting point of the non-heat-adhesive component. If the temperature is lower than 20 ° C, the ballast effect becomes remarkable, and the rubber elasticity is developed to change the spinning tension.
Thick spots occur on the discharged yarn, making normal spinning difficult.
On the other hand, when the spinning temperature is 100 ° C. or higher and higher than the melting point, the thermal decomposition of the soft segment becomes remarkable and the thermoplastic elastomer
The rubber elasticity of is significantly reduced, which is not preferable. The preferred spinning temperature is at least 30 ° C above the melting point of the non-thermobonding component.
The temperature is higher than the above, and more preferably higher than the melting point of 40 ° C to 80 ° C.
【００１３】本発明では上記伸縮性の接着点を形成する
該熱接着繊維中の熱接着成分の含有量は１０〜７０重量
％ガ好ましい。１０重量％未満では接着点を形成する熱
可塑性エラストマ−の量が不足し接着断面積が小さくな
るため、接着点の変形回復力が低下しクッション材とし
ての耐久性や弾力性が低下するので好ましくない。他
方、７０重量％を越えると、伸縮性ネットワ−ク構造部
を形成する非熱接着成分が少なくなり、伸縮性ネットワ
−ク構造部の形状復元性が低下してくるので好ましくな
い。より好ましい熱接着成分の含有量は３０重量％以
上、最も好ましくは４０〜６０重量％である。In the present invention, the content of the heat-adhesive component in the heat-adhesive fiber forming the elastic adhesive points is preferably 10 to 70% by weight. When the amount is less than 10% by weight, the amount of the thermoplastic elastomer forming the adhesive point is insufficient and the adhesive cross-sectional area becomes small, so that the deformation recovery force of the adhesive point decreases and the durability and elasticity as the cushioning material decrease, which is preferable. Absent. On the other hand, if it exceeds 70% by weight, the amount of non-heat-adhesive components forming the stretchable network structure portion decreases, and the shape recovery of the stretchable network structure portion decreases, which is not preferable. The more preferable content of the heat-adhesive component is 30% by weight or more, and most preferably 40 to 60% by weight.
【００１４】本発明の熱接着繊維の好ましい捲縮形態は
加工時立体捲縮が発現していると、特にエラストマ−は
粘着性があり、糸糸の摩擦が高いためカ−ド開繊時開繊
が不良となるので、工程通過性からは捲縮がジグザグの
機械捲縮が好ましい。機械捲縮は捲縮数が５〜３０山／
インチ、捲縮率が５〜３０％の範囲が好ましい。より好
ましくは捲縮数が１０〜２５山／インチ、捲縮率が１０
〜２５％とすることでマトリックス繊維中に均一に開
繊、分散させ、繊維間の接点で３次元的に接着点を形成
させた伸縮性を有する３次元ネットワ−ク構造を作れ
る。接着点を通常のアメ−バ−状接着点とするには、熱
接着成分が溶融流動できる、融点より少なくとも２０℃
以上高い温度で熱接着処理するのが好ましく、そのため
には、非接着成分の融点は熱接着成分の融点より少なく
とも３０℃高くする必要がある。かくして得られた繊維
構造体はクッション性や弾発力が高く、性能の耐久性も
良好なものとすることができる。なお、本発明のより好
ましい巻縮能を付与する延伸条件は、延伸温度を温浴７
０℃以下で破断延伸倍率の約０．８〜０．９倍で延伸
し、収縮率を抑える場合は、次いで定長又は弛緩熱処理
して機械巻縮を付与し、機械巻縮が伸びないように低張
力でカッタ−に供給切断して得ることができる。The preferred crimped form of the heat-bonded fiber of the present invention is that when a three-dimensional crimp is developed during processing, the elastomer is sticky and the friction of the yarn is high, so that it is opened during card opening. From the viewpoint of processability, mechanical crimping with zigzag crimping is preferable because the fiber becomes defective. Mechanical crimps have 5 to 30 threads /
Inches and crimp ratios of 5 to 30% are preferred. More preferably, the number of crimps is 10 to 25 threads / inch, and the crimp ratio is 10.
By setting the content to -25%, it is possible to form a three-dimensional network structure having elasticity, in which the fibers are uniformly opened and dispersed in the matrix fiber, and the bonding points are three-dimensionally formed at the contact points between the fibers. In order to make the bonding point a normal Améber-shaped bonding point, the heat bonding component can be melted and flown, and at least 20 ° C. above the melting point.
It is preferable to perform the heat-bonding treatment at a higher temperature as described above, and for that purpose, the melting point of the non-bonding component needs to be at least 30 ° C. higher than the melting point of the heat-bonding component. The fibrous structure thus obtained has high cushioning properties and elasticity, and can have good performance durability. The stretching conditions for imparting the more preferable crimping ability of the present invention are as follows.
When stretching is performed at 0 ° C or lower at a breaking draw ratio of about 0.8 to 0.9 times and the shrinkage is suppressed, a constant length or relaxation heat treatment is applied to impart mechanical crimping so that the mechanical crimping does not extend. It can be obtained by supplying and cutting the cutter with a low tension.
【００１５】本発明の熱接着繊維の繊度は特に限定され
ないが、繊度が太すぎると、繊維構造体とするときの構
成本数が減少してネットワ−ク構造が粗くなり力の分散
がしにくくなる。他方、マトリックスの繊維が太い繊度
の場合は、熱接着繊維の繊度が細過ぎると混繊がしにく
くなり、均一なネットワ−ク構造を形成しにくくなる。
極端に熱接着繊維の繊度が細過ぎると開繊も困難となる
ので通常２〜１５デニ−ルの範囲が良い。油剤は熱分解
しにくいもの、例えば、ラウリルホスフェ−トカリウ
ム、セチルホスフェ−トカリウムなどのホスフェ−ト塩
を使用するのが好ましい。また、摩擦係数が低くなる油
剤を使うと開繊性が向上するので特に好ましい。 本発
明の熱接着繊維は、単独で不織布、クッション材等の繊
維集合体にしてもよいが、該熱接着繊維を５重量％以上
含む他繊維（マトリックス繊維、または母材）との混合
集合体にしても良い。好ましい混合母材としては、ポリ
エチレンテレフタレート、ポリエチレンナフタレート、
ポリシクロヘキサンジメチルテレフタレート等の高融点
高結晶性のポリエステル及びポリブチレンテレフタレ−
トからなる繊維があり、接着性も良好であり、優れたク
ッション性、優れた耐熱耐久性、着用時蒸れにくい、及
びリサイクルが可能なポリエステル系クッション材とな
る繊維集合体を容易に製造することが可能である。な
お、本発明の特に好ましい熱接着繊維を含有する繊維集
合体を熱成形前に任意の密度に圧縮し、加熱処理して接
点を融着一体化するには、熱接着成分の融点より１０℃
高く、好ましくは２０℃高く非熱接着成分の融点より少
なくとも５℃低い温度で熱成形して任意の密度や硬さの
繊維成形体をえられる。次いで一旦冷却固化させた後、
熱接着成分の融点より少なくとも１０℃以上低い温度で
熱処理すると、好ましくは１０％以上の歪みを付与して
熱処理すると、融着処理のみのものよりクッション性、
耐熱耐久性が格段に向上する。なお、接着成分の酸成分
に非晶性となる成分が多く含まれるほどこの効果は著し
く減少する。The fineness of the heat-adhesive fiber of the present invention is not particularly limited, but if the fineness is too large, the number of constituents of the fiber structure decreases, the network structure becomes rough, and it becomes difficult to disperse the force. . On the other hand, when the fibers of the matrix have a large fineness, if the fineness of the heat-adhesive fibers is too small, it becomes difficult to mix fibers, and it becomes difficult to form a uniform network structure.
If the fineness of the heat-bonded fiber is extremely thin, it will be difficult to open the fiber. Therefore, the range of 2 to 15 denier is usually preferable. It is preferable to use an oil agent which is not easily decomposed by heat, for example, a phosphate salt such as potassium lauryl phosphate or potassium cetyl phosphate. In addition, it is particularly preferable to use an oil agent having a low friction coefficient because the openability is improved. The heat-adhesive fiber of the present invention may be made into a fiber aggregate such as a non-woven fabric or a cushioning material alone, but it is a mixture aggregate with other fibers (matrix fiber or matrix) containing 5 wt% or more of the heat-adhesive fiber. You can Preferred mixed base materials include polyethylene terephthalate, polyethylene naphthalate,
High melting point and highly crystalline polyester such as polycyclohexane dimethyl terephthalate and polybutylene terephthalate
Easily produce a fiber aggregate that has polyester fibers and has good adhesiveness, excellent cushioning properties, excellent heat resistance and durability, is resistant to stuffiness when worn, and is recyclable. Is possible. It should be noted that in order to fuse and integrate the contacts by compressing the fiber assembly containing the particularly preferred heat-adhesive fiber of the present invention to an arbitrary density before thermoforming, and melting the heat-adhesive components by 10 ° C.
It can be thermoformed at a temperature that is high, preferably 20 ° C. and at least 5 ° C. lower than the melting point of the non-heat-adhesive component, to obtain a fiber molded product of any density and hardness. Then, after cooling and solidifying,
When heat-treated at a temperature lower than the melting point of the heat-adhesive component by at least 10 ° C. or more, when heat-treated with a strain of preferably 10% or more, the cushioning property is higher than that of only the fusion treatment.
Heat resistance and durability are significantly improved. Note that this effect is significantly reduced as the acid component of the adhesive component contains more amorphous component.
【００１６】[0016]
実施例１〜３、比較例１〜４ 酸成分としてジメチルテレフタレ−ト（ＤＭＴ）または
及びジメチルイソフタレ−ト（ＤＭＩ）またはナフタレ
ン２・６ジカルボン酸（ＤＭＮ）とグリコ−ル成分とし
て１・４・ブタンジオ−ル（ＢＤ）およびポリテトラメ
チレングリコ−ル（ＰＴＭＧ）又はエチレングリコ−ル
（ＥＧ）を少量の触媒と安定剤とともに仕込み、公知の
方法でエステル交換反応後昇温減圧しつつ重縮合してポ
リエステルエ−テルブロック共重合物を生成した。該ポ
リエステルエ−テルブロック共重合物を加熱真空乾燥
し、抗酸化剤として１・３・５・トリメチル・２・４・
６・トリス（３・５・ジ・ｔ・ブチル・４・ヒドロキシ
ベンジル）ベンゼン（ＴＴｔＢＨＢ）を２軸押出機にて
ソフトセグメント当たり３重量％溶融練込みしたものを
ペレット化し、加熱不活性ガスにて水分を充分除去し熱
接着成分に供した。得られたポリエステルエ−テルブロ
ック共重合体の処方および特性を表１に示す。Examples 1 to 3, Comparative Examples 1 to 4 Dimethyl terephthalate (DMT) or and dimethyl isophthalate (DMI) or naphthalene 2.6 dicarboxylic acid (DMN) as an acid component and 1 as a glycol component. 4. Butanediol (BD) and polytetramethylene glycol (PTMG) or ethylene glycol (EG) were charged together with a small amount of a catalyst and a stabilizer, and after a transesterification reaction by a known method, the temperature was increased and the pressure was reduced. Condensation produced a polyester ether block copolymer. The polyester ether block copolymer is dried under vacuum by heating to give 1,3,5, trimethyl, 2,4,4 ,.
6-Tris (3.5-di-t-butyl-4.hydroxybenzyl) benzene (TTtBHB) melted and kneaded in a twin-screw extruder at 3% by weight per soft segment is pelletized and heated into an inert gas. Then, the water was sufficiently removed to provide a heat-adhesive component. Table 1 shows the formulation and characteristics of the obtained polyester ether block copolymer.
【００１７】[0017]
【表１】 [Table 1]
【００１８】得られたポリエステルエ−テルブロック共
重合体を鞘成分および芯成分にし、比較のためポリブチ
レンテレフタレ−ト（ＰＢＴ）またはポリエチレンテレ
フタレ−ト（ＰＥＴ）を芯成分にし、鞘／芯の重量比を
５０／５０で常法により紡糸温度を２６０℃〜２８５℃
にて紡糸し、未延伸糸を得た。次いで、５０℃温浴で
３．４倍に延伸し、連続して乾熱９０℃で定張熱処理
し、仕上げ油剤を付与した後クリンパ−にて機械捲縮を
付与し、機械捲縮が伸びない張力でカッタ−に供給し５
１mmに切断して４デニ−ルの熱接着繊維を作成した。得
られた繊維の特性を表２に示す。なお、繊維中のポリエ
ステルエ−テルブロック共重合体の相対粘度は溶液粘度
に加成性が成立するとして、ＰＥＴの紡糸条件と同一の
条件で両成分にＰＥＴを供給して得た繊維の相対粘度と
該複合繊維の組成比で補正した相対粘度として求めた。
粘着状態は、繊維を手で開繊したときの繊維のばらけ易
さで判断した。The obtained polyester ether block copolymer was used as a sheath component and a core component, and for comparison, polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) was used as the core component, and the sheath / The spinning temperature is 260 ° C to 285 ° C by a conventional method with the weight ratio of the core being 50/50.
Was spun to obtain an unstretched yarn. Then, it was stretched 3.4 times in a 50 ° C. hot bath, continuously subjected to constant tension heat treatment at 90 ° C. in dry heat, and after applying a finishing oil agent, mechanical crimping was applied with a crimper so that the mechanical crimping did not extend. Supply to the cutter with tension 5
It was cut into 1 mm to prepare a 4-denier heat-bonded fiber. The properties of the fibers obtained are shown in Table 2. Assuming that the relative viscosity of the polyester ether block copolymer in the fiber establishes additivity to the solution viscosity, the relative viscosity of the fiber obtained by supplying PET to both components under the same conditions as the spinning conditions of PET. It was determined as a relative viscosity corrected by the viscosity and the composition ratio of the conjugate fiber.
The adhesive state was judged by the ease with which the fibers were separated when the fibers were opened by hand.
【００１９】[0019]
【表２】 [Table 2]
【００２０】得られた機械捲縮を持つ熱接着繊維を３０
重量％と常法にて作成した１３デニ−ルの中空で外側に
３個の突起を有する断面で立体捲縮を有するＰＥＴ短繊
維を７０重量％とをカ−ドにて混繊−開繊して得たウエ
ッブを密度０．０３ｇ／cm3となるように圧縮し、１５
０〜２１０℃の熱風を強制貫通させて５分間熱処理し、
次いで、一旦冷却し、一部は更に密度が０．０４ｇ／cm
3 となるように圧縮し、１００℃で３０分再熱処理し
て、平板状のクッション材を得た。得られたクッション
材の作成状況と特性を表３に示す。なお、７０℃の圧縮
残留歪み、常温での繰返し圧縮残留歪み、及び反発弾性
はＪＩＳ−Ｋ−６４０１の方法による。30% of the obtained heat-bonded fiber having mechanical crimp
% By weight and 70% by weight of PET short fiber having a three-dimensional crimp in the cross section having a hollow of 13 denier and having three protrusions on the outside prepared by a conventional method with a card The web thus obtained was compressed to a density of 0.03 g / cm 3 and
Forcibly penetrate the hot air of 0-210 ℃, heat treatment for 5 minutes,
Then, once cooled, a part of the density is further 0.04 g / cm
It was compressed to 3 and reheated at 100 ° C. for 30 minutes to obtain a flat cushion material. Table 3 shows the preparation status and characteristics of the obtained cushioning material. The compression residual strain of 70 ° C., the repeated compression residual strain at room temperature, and the impact resilience are according to the method of JIS-K-6401.
【００２１】[0021]
【表３】 [Table 3]
【００２２】本発明の要件を満足する実施例１〜３は耐
熱耐久性に優れ、常温での耐久性にも優れ、クッション
材の性能も優れたものを得ることができる。比較例１は
熱接着成分に従来公知のエラストマ−を用い、非熱接着
成分に非エラストマ−を用いた従来公知の熱接着繊維の
例であり、塑性変形し易くなり、耐熱耐久性や常温での
耐久性がやや劣るものである。比較例２は熱接着成分と
非熱接着成分の融点差が少ない場合の例で、伸縮性の３
次元ネットワ−ク構造を作れないため接着点にダメ−ジ
を受けやすくなり、耐熱耐久性や常温での耐久性がやや
劣るものとなっている。比較例３は熱接着成分のソフト
セグメント量が少ない場合で、回復性が劣るため、耐熱
耐久性や常温での耐久性がやや劣るものとなっている。
比較例４は従来公知の非エラストマ−成分からなる熱接
着繊維の場合で、塑性変形が大きく、回復性も無いた
め、耐熱耐久性や常温での耐久性が著しく劣るものとな
っている。なお、参考のため、実施例１及び比較例４に
ついて、３０℃室内にてパネラ−１０人に１時間座らせ
て、床つき感、座り心地、蒸れ感を評価させた結果、実
施例１は、床つき感が無く、座り心地も良好で蒸れ感の
少ない快適なクッション材であったが、比較例４は臀部
や大腿部が痛くなり座り心地の悪いものであった。In Examples 1 to 3 satisfying the requirements of the present invention, excellent heat resistance and durability, durability at room temperature, and excellent cushioning material performance can be obtained. Comparative Example 1 is an example of a conventionally known heat-bonding fiber in which a conventionally known elastomer is used as the heat-bonding component and a non-elastomer is used as the non-heat-bonding component. Is slightly inferior in durability. Comparative Example 2 is an example in which the difference between the melting points of the heat-bonding component and the non-heat-bonding component is small, and the elasticity of 3
Since the three-dimensional network structure cannot be created, the adhesive points are easily damaged, and the heat resistance and the durability at room temperature are slightly inferior. Comparative Example 3 is a case where the amount of the soft segment of the heat-adhesive component is small and the recoverability is poor, so that the heat resistance durability and the durability at room temperature are slightly inferior.
Comparative Example 4 is a case of a heat-bonded fiber composed of a conventionally known non-elastomer component, which has a large plastic deformation and has no recoverability, so that the heat resistance and the durability at room temperature are remarkably inferior. For reference, with respect to Example 1 and Comparative Example 4, the paneler 10 people were allowed to sit in the room at 30 ° C. for 1 hour to evaluate the feeling of flooring, sitting comfort, and stuffiness. The cushioning material had no floor feeling, was comfortable to sit on, and had little stuffiness, but Comparative Example 4 was uncomfortable to sit on because the buttocks and thighs hurt.
【００２３】参考例１ 実験No.Ａ−１を鞘成分に実験No.Ａ−５を芯成分にし
て、紡糸温度２４０℃にて紡糸したところ、バラス効果
が大きく、レゾナンス様の太細斑が著しい未延伸糸しか
得られず紡糸を断念した。紡糸温度は芯成分の融点より
２０℃以上高い温度が必要なことが判る。Reference Example 1 When Experiment No. A-1 was used as a sheath component and Experiment No. A-5 was used as a core component and spinning was carried out at a spinning temperature of 240 ° C., a large dispersive effect and resonance-like thick and thin spots were observed. Only unstretched yarn was obtained, and spinning was abandoned. It can be seen that the spinning temperature needs to be higher than the melting point of the core component by 20 ° C. or more.
【００２４】参考例２ 実施例１〜３のクッション材を４５°メセナミン法及び
４５°アルコ−ルランプ法で難燃性の評価を行った結果
は全て合格した。比較にポリウレタンを評価した結果は
不合格であった。本発明の熱接着繊維を用いたクッショ
ン材は安全性も高いことが判る。Reference Example 2 The cushioning materials of Examples 1 to 3 were evaluated for flame retardancy by the 45 ° mesenamine method and the 45 ° alcohol lamp method, and all the results passed. The result of evaluating polyurethane for comparison was unsuccessful. It can be seen that the cushioning material using the heat-bonding fiber of the present invention has high safety.
【００２５】[0025]
【発明の効果】本発明のエラストマ−系熱接着繊維は、
他繊維をマトリックスに用いてクッション材などに熱接
着成形した場合、マトリックス繊維間を伸縮性の優れた
熱接着点と伸縮性を保持した複合繊維とが３次元ネット
ワ−ク構造を形成できるため、極めて優れたクッション
性、常温および加熱下での耐久性を持つ安全性の高いク
ッション材を提供できる。なお、透湿透水性も保持でき
るので蒸れの少ない快適な座席を提供できる。本発明の
エラストマ−系熱接着繊維を用いて得られるクッション
材の用途としては、車両用、船舶用、家具、ベッド用に
適するが、特には自動車、電車用に適する。他の用途と
しては、伸縮性を生かした不織布用途、例えば衛材基
布、肩パッドやカップ、合成皮革基布や立毛布帛類用基
布、通気性良好で接着できるワディング層や内装材、７
０℃を越えない範囲の断熱材や衝撃吸収材、更には紡績
して伸縮性の編織物等々に広く適用できる。The elastomer-based heat-bonded fiber of the present invention comprises:
When another fiber is used as a matrix and is heat-bonded and molded into a cushioning material or the like, a heat-bonding point having excellent elasticity between the matrix fibers and a composite fiber having elasticity can form a three-dimensional network structure. It is possible to provide a highly safe cushioning material having extremely excellent cushioning properties and durability at room temperature and under heating. In addition, since the moisture and water permeability can be maintained, a comfortable seat with less stuffiness can be provided. The cushion material obtained by using the elastomer-based heat-adhesive fiber of the present invention is suitable for vehicles, ships, furniture and beds, but is particularly suitable for automobiles and trains. Other uses include non-woven fabrics that take advantage of stretchability, such as sanitary fabrics, shoulder pads and cups, synthetic leather fabrics and fabrics for napped fabrics, wadding layers and interior materials that have good air permeability and can be bonded.
It can be widely applied to heat insulating materials and shock absorbing materials in the range not exceeding 0 ° C., and further to spun stretchable knitted fabrics and the like.
Claims (2)
分と非熱接着成分との複合繊維であり、熱接着成分がソ
フトセグメント含有量３０重量％以上の熱可塑性エラス
トマーであり、非熱接着成分が上記熱接着成分の融点よ
り３０℃以上高い融点を有する熱可塑性エラストマーで
あることを特徴とするエラストマー系熱接着繊維。1. A composite fiber of a heat-adhesive component and a non-heat-adhesive component made of a thermoplastic elastomer, wherein the heat-adhesive component is a thermoplastic elastomer having a soft segment content of 30% by weight or more, and the non-heat-adhesive component is the above. An elastomer-based heat-bonding fiber, which is a thermoplastic elastomer having a melting point higher than the melting point of a heat-bonding component by 30 ° C. or more.
熱接着成分の融点より少なくとも３０℃高い融点の非熱
接着成分の熱可塑性エラストマ−を、非熱接着成分の融
点より少なくとも２０℃以上高い温度で複合紡糸するこ
とを特徴とするエラストマ−系熱接着繊維の製法。2. A thermoplastic elastomer of a heat-adhesive component,
Elastomer-based thermal bonding, characterized in that a thermoplastic elastomer of a non-thermal bonding component having a melting point higher than the melting point of the thermal bonding component by at least 30 ° C. is subjected to composite spinning at a temperature at least 20 ° C. higher than the melting point of the non-thermal bonding component. Fiber manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5868593A JP3275973B2 (en) | 1993-03-18 | 1993-03-18 | Elastomer-based heat-bonded fiber and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5868593A JP3275973B2 (en) | 1993-03-18 | 1993-03-18 | Elastomer-based heat-bonded fiber and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06272111A true JPH06272111A (en) | 1994-09-27 |
| JP3275973B2 JP3275973B2 (en) | 2002-04-22 |
Family
ID=13091413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5868593A Expired - Lifetime JP3275973B2 (en) | 1993-03-18 | 1993-03-18 | Elastomer-based heat-bonded fiber and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3275973B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5677057A (en) * | 1995-12-25 | 1997-10-14 | Teijin Limited | Heat-bonding conjugated fibers and highly elastic fiber balls comprising the same |
| WO2007123214A1 (en) * | 2006-04-21 | 2007-11-01 | Aichi Prefecture | Process for producing core/sheath conjugate elastomer fiber |
-
1993
- 1993-03-18 JP JP5868593A patent/JP3275973B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5677057A (en) * | 1995-12-25 | 1997-10-14 | Teijin Limited | Heat-bonding conjugated fibers and highly elastic fiber balls comprising the same |
| US5858528A (en) * | 1995-12-25 | 1999-01-12 | Teijin Limited | Heat-bonding conjugated fibers and highly elastic fiber balls comprising the same |
| WO2007123214A1 (en) * | 2006-04-21 | 2007-11-01 | Aichi Prefecture | Process for producing core/sheath conjugate elastomer fiber |
| JP5191381B2 (en) * | 2006-04-21 | 2013-05-08 | 愛知県 | Method for producing elastomeric core-sheath conjugate fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3275973B2 (en) | 2002-04-22 |
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