JP2011021282A - Polyester machine sewing thread - Google Patents
Polyester machine sewing thread Download PDFInfo
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- JP2011021282A JP2011021282A JP2009164772A JP2009164772A JP2011021282A JP 2011021282 A JP2011021282 A JP 2011021282A JP 2009164772 A JP2009164772 A JP 2009164772A JP 2009164772 A JP2009164772 A JP 2009164772A JP 2011021282 A JP2011021282 A JP 2011021282A
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- Prior art keywords
- polyester
- sewing thread
- aliphatic
- aromatic
- multifilament
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- 229920000728 polyester Polymers 0.000 title claims abstract description 102
- 238000009958 sewing Methods 0.000 title claims abstract description 50
- 125000003118 aryl group Chemical group 0.000 claims abstract description 49
- 229920003232 aliphatic polyester Polymers 0.000 claims abstract description 40
- 239000002699 waste material Substances 0.000 claims description 15
- -1 hydroxyalkyl carboxylic acid Chemical class 0.000 claims description 10
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 claims description 2
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 claims description 2
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims 1
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 5
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000005809 transesterification reaction Methods 0.000 description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- REKYPYSUBKSCAT-UHFFFAOYSA-N 3-hydroxypentanoic acid Chemical compound CCC(O)CC(O)=O REKYPYSUBKSCAT-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 239000007809 chemical reaction catalyst Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical class CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 229920001432 poly(L-lactide) Polymers 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- RKDVKSZUMVYZHH-UHFFFAOYSA-N 1,4-dioxane-2,5-dione Chemical compound O=C1COC(=O)CO1 RKDVKSZUMVYZHH-UHFFFAOYSA-N 0.000 description 1
- SJZRECIVHVDYJC-UHFFFAOYSA-N 4-hydroxybutyric acid Chemical compound OCCCC(O)=O SJZRECIVHVDYJC-UHFFFAOYSA-N 0.000 description 1
- 229940006015 4-hydroxybutyric acid Drugs 0.000 description 1
- JJTUDXZGHPGLLC-IMJSIDKUSA-N 4511-42-6 Chemical compound C[C@@H]1OC(=O)[C@H](C)OC1=O JJTUDXZGHPGLLC-IMJSIDKUSA-N 0.000 description 1
- PHOJOSOUIAQEDH-UHFFFAOYSA-N 5-hydroxypentanoic acid Chemical compound OCCCCC(O)=O PHOJOSOUIAQEDH-UHFFFAOYSA-N 0.000 description 1
- IWHLYPDWHHPVAA-UHFFFAOYSA-N 6-hydroxyhexanoic acid Chemical compound OCCCCCC(O)=O IWHLYPDWHHPVAA-UHFFFAOYSA-N 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000371 Esterases Proteins 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012773 agricultural material Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229920000229 biodegradable polyester Polymers 0.000 description 1
- 239000004622 biodegradable polyester Substances 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 229930188620 butyrolactone Natural products 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000012691 depolymerization reaction Methods 0.000 description 1
- CJOJIAKIRLKBOO-UHFFFAOYSA-N dimethyl 2-hydroxybenzene-1,4-dicarboxylate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C(O)=C1 CJOJIAKIRLKBOO-UHFFFAOYSA-N 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- CESXSDZNZGSWSP-UHFFFAOYSA-L manganese(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Mn+2].CC([O-])=O.CC([O-])=O CESXSDZNZGSWSP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 150000003503 terephthalic acid derivatives Chemical class 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
本発明は、地球環境への配慮が必要とされる社会において、埋蔵天然資源の使用削減を可能としたポリエステルミシン糸に関する。さらに詳しくは、環境への負荷が軽い生分解性ポリエステルとリサイクル可能な芳香族ポリエステルを用いたポリエステルミシン糸に関するものである。 The present invention relates to a polyester sewing thread capable of reducing the use of buried natural resources in a society where consideration for the global environment is required. More specifically, the present invention relates to a polyester sewing thread using a biodegradable polyester and a recyclable aromatic polyester that are lightly loaded on the environment.
芳香族ポリエステルは、その性能の優秀性から衣料繊維、産業繊維、フィルム、飲料用のボトル等広範囲の用途に使用されている。しかし、芳香族ポリエステルの原料となるテレフタル酸およびジメチルテレフタレート等のテレフタル酸誘導体は、石油・石炭等の埋蔵天然資源が出発物質であり、将来資源不足が懸念されている。これらポリエステル製品は、使用後廃棄、回収され処分されるが、その際、燃焼しようとすると高熱を発し、通常の仕様の焼却炉では焼却炉が損傷し易いなどの問題が生じ、そのため高温耐久性に優れた焼却炉が必要になるばかりでなく、燃焼時に大量の酸素が必要であるために、炭酸ガス排出量が増大し地球温暖化などの原因となる。また、燃焼されずに廃棄される場合には、ほぼ永久的に分解されず残存する為、環境保護の観点からも大きな社会問題となっている。 Aromatic polyesters are used in a wide range of applications such as clothing fibers, industrial fibers, films, and beverage bottles because of their superior performance. However, terephthalic acid derivatives such as terephthalic acid and dimethyl terephthalate, which are used as raw materials for aromatic polyesters, start from buried natural resources such as petroleum and coal, and there is a concern about resource shortages in the future. These polyester products are discarded, recovered and disposed of after use. However, when they try to burn, they generate high heat, and incinerators with normal specifications tend to be damaged. In addition to requiring an excellent incinerator, a large amount of oxygen is required at the time of combustion, which increases carbon dioxide emissions and causes global warming. In addition, when discarded without being burned, it remains substantially undecomposed and remains a serious social problem from the viewpoint of environmental protection.
一方、ポリ乳酸を代表とする脂肪族ポリエステルは、その優れた生分解性を生かして、農業資材、土木資材等へ利用されている（例えば、特許文献１、２参照）。しかし、これらの脂肪族ポリエステルは、耐熱性や強伸度等の物性面において芳香族ポリエステルより劣っており、これを用いた実用可能なミシン糸の提案は未だされていない。 On the other hand, aliphatic polyesters typified by polylactic acid are utilized for agricultural materials, civil engineering materials, and the like by utilizing their excellent biodegradability (see, for example, Patent Documents 1 and 2). However, these aliphatic polyesters are inferior to aromatic polyesters in terms of physical properties such as heat resistance and high elongation, and no practical sewing thread using them has been proposed.
本発明は、上述した従来技術における問題点を解消するためになされたものであり、その目的は、可縫性に優れ、埋蔵資源の使用を削減することができるポリエステルミシン糸を提供することにある。 The present invention has been made to solve the above-described problems in the prior art, and an object of the present invention is to provide a polyester sewing thread that has excellent sewability and can reduce the use of reserve resources. is there.
本発明によれば、上記の目的は、少なくとも２種類のポリエステルマルチフィラメント糸からなるミシン糸であって、一方が、生分解性を有する脂肪族ポリエステルからなるマルチフィラメント糸、他方が、芳香族ポリエステルからなるマルチフィラメント糸であり、それぞれのマルチフィラメント糸に撚係数が４０００〜７０００の下撚が施され、さらにこれらを合糸して撚係数が５０００〜８０００の上撚が施されていることを特徴とするポリエステルミシン糸により達成できる。 According to the present invention, the above object is a sewing thread composed of at least two types of polyester multifilament thread, one of which is a multifilament thread composed of biodegradable aliphatic polyester and the other is an aromatic polyester. It is a multifilament yarn made of the above, and each multifilament yarn is twisted with a twist coefficient of 4000 to 7000, and further combined to give a twist coefficient of 5000 to 8000. This can be achieved by the characteristic polyester sewing thread.
本発明のポリエステルミシン糸は、生分解性に優れる脂肪族ポリエステルとリサイクル可能な芳香族ポリエステルの２種の成分から実質的に構成されているので、循環型社会を実現していくのに必須である埋蔵天然資源の使用削減が可能となる。また、脂肪族ポリエステルのマルチフィラメント糸と芳香族ポリエステルのマルチフィラメント糸を合撚することにより、脂肪族ポリエステルマルチフィラメント単独のミシン糸を上回る強伸度を達成可能となる。 Since the polyester sewing thread of the present invention is substantially composed of two components, an aliphatic polyester excellent in biodegradability and a recyclable aromatic polyester, it is indispensable for realizing a recycling society. It is possible to reduce the use of certain buried natural resources. Further, by twisting together the aliphatic polyester multifilament yarn and the aromatic polyester multifilament yarn, it is possible to achieve a higher elongation than the sewing yarn of the aliphatic polyester multifilament alone.
以下、本発明の実施の形態について詳細に説明する。本発明のポリエステルミシン糸（以下、単にミシン糸と称することがある）は、少なくとも２種類のポリエステルマルチフィラメント糸からなるミシン糸であって、一方が、生分解性を有する脂肪族ポリエステルからなるマルチフィラメント糸（以下、肪族ポリエステルマルチフィラメント糸と称することがある）、他方が、芳香族ポリエステルからなるマルチフィラメント糸（芳香族ポリエステルマルチフィラメント糸と称することがある）である。上記ミシン糸は、他の繊維、樹脂、油剤、または、機能性付与剤などの成分を含んでいてもよく、該他の成分の割合はミシン糸の重量に対して、好ましくは１０重量％以下、より好ましくは５重量％以下である。他の成分がこれより多く含まれる場合は、後述する芳香族ポリエステルの回収工程において、不純物として残存することになり、残渣が生分解性を有する脂肪族ポリエステルだけでなくなるため、生分解が困難になり、地球環境に悪影響を及ぼすので好ましくない。また、生分解性を有する脂肪族ポリエステル単独ではポリマーの融点が低く、他の芳香族ポリエステル等と比較すると、強伸度や耐熱性といった点で十分な性能が得られない。一方、芳香族ポリエステル単独では、リサイクル性は良好であるが、生分解性に劣るという問題点がある。 Hereinafter, embodiments of the present invention will be described in detail. The polyester sewing thread of the present invention (hereinafter sometimes simply referred to as sewing thread) is a sewing thread composed of at least two types of polyester multifilament thread, one of which is a multi-layer composed of an aliphatic polyester having biodegradability. The filament yarn (hereinafter may be referred to as an aliphatic polyester multifilament yarn), and the other is a multifilament yarn made of an aromatic polyester (sometimes referred to as an aromatic polyester multifilament yarn). The sewing thread may contain components such as other fibers, resin, oil, or functionality-imparting agent, and the ratio of the other components is preferably 10% by weight or less based on the weight of the sewing thread. More preferably, it is 5% by weight or less. When other components are contained in a larger amount than this, it will remain as an impurity in the aromatic polyester recovery step described later, and the residue is not only an aliphatic polyester having biodegradability, making biodegradation difficult. This is not preferable because it adversely affects the global environment. In addition, the biodegradable aliphatic polyester alone has a low melting point of the polymer, so that sufficient performance cannot be obtained in terms of strength and heat resistance as compared with other aromatic polyesters. On the other hand, the aromatic polyester alone has good recyclability but is inferior in biodegradability.
本発明で用いる脂肪族ポリエステルは、生分解性を有する脂肪族ポリエステルであれば特に限定する必要はない。例えば、主成分として（１）グリコール酸、乳酸、ヒドロキシブチルカルボン酸などのようなヒドロキシアルキルカルボン酸、（２）グリコリド、ラクチド、ブチロラクトンなどの脂肪族ラクトン、（３）エチレングリコール、プロピレングリコール、ブタンジオール、ヘキサンジオールなどのような脂肪族ジオール、（４）ジエチレングリコール、ジヒドロキシエチルブタンなどのようなポリアルキレンエーテルなどのオリゴマー、ポリエチレングリコール、ポリプロピレングリコール、ポリブチレンエーテルなどのポリアルキレングリコール、（５）コハク酸、アジピン酸、スベリン酸、アゼライン酸、セバシン酸、デカンジカルボン酸などの脂肪族カルボン酸からなる脂肪族ポリエステルがあげられる。これらのポリエステルは、一種を単独で使用してもよくまた二種以上を混合して使用してもよい。さらにラクトンとしては、Ｌ−ラクトン、Ｄ−ラクトンの他にその他の成分を共重合したものもよく、共重合可能な他の成分としては、グリコール酸、３−ヒドロキシ吉草酸、４−ヒドロキシ酪酸、６−ヒドロキシカプロン酸などのヒドロキシカルボン酸類の他、エチレングリコール、プロピレングリコール、ブタンジオール、ネオペンチルグリコール、グリセリン、ペンタエリスリトール等の分子内に複数の水酸基を含有する化合物類またはそれらの誘導体、アジピン酸、セバシン酸等の分子内に複数のカルボン酸を含有する化合物類またはそれらの誘導体が挙げられる。 The aliphatic polyester used in the present invention is not particularly limited as long as it is a biodegradable aliphatic polyester. For example, (1) hydroxyalkyl carboxylic acid such as glycolic acid, lactic acid, hydroxybutyl carboxylic acid, etc., (2) aliphatic lactone such as glycolide, lactide, butyrolactone, (3) ethylene glycol, propylene glycol, butane as main components Aliphatic diols such as diols and hexanediols, (4) oligomers such as polyalkylene ethers such as diethylene glycol and dihydroxyethylbutane, polyalkylene glycols such as polyethylene glycol, polypropylene glycol and polybutylene ether, (5) Examples thereof include aliphatic polyesters composed of aliphatic carboxylic acids such as acid, adipic acid, suberic acid, azelaic acid, sebacic acid and decanedicarboxylic acid. These polyesters may be used individually by 1 type, and 2 or more types may be mixed and used for them. Further, the lactone may be one obtained by copolymerizing other components in addition to L-lactone and D-lactone, and other components capable of copolymerization include glycolic acid, 3-hydroxyvaleric acid, 4-hydroxybutyric acid, In addition to hydroxycarboxylic acids such as 6-hydroxycaproic acid, compounds containing a plurality of hydroxyl groups in the molecule such as ethylene glycol, propylene glycol, butanediol, neopentyl glycol, glycerin, pentaerythritol, or derivatives thereof, adipic acid And compounds containing a plurality of carboxylic acids in the molecule such as sebacic acid or derivatives thereof.
一方、本発明で用いられる芳香族ポリエステルは特に限定はされないが、テレフタル酸またはナフタレンジカルボン酸主たる酸成分とするポリエステルが好ましく、特にテレフタル酸がより好ましい。 On the other hand, the aromatic polyester used in the present invention is not particularly limited, but polyester having terephthalic acid or naphthalenedicarboxylic acid as the main acid component is preferable, and terephthalic acid is more preferable.
上記の脂肪族ポリエステルおよび芳香族ポリエステルには、必要に応じて、例えば結晶核剤、艶消し剤、酸化防止剤、糸摩擦低減剤、顔料、光安定剤、耐候剤、抗菌剤などの各種添加剤を、本発明の効果を損なわない範囲内で添加することができる。 Various additions such as crystal nucleating agents, matting agents, antioxidants, yarn friction reducing agents, pigments, light stabilizers, weathering agents, antibacterial agents, etc., are added to the above aliphatic polyesters and aromatic polyesters as necessary. An agent can be added within the range which does not impair the effect of this invention.
さらに本発明のポリエステルミシン糸においては、芳香族ポリエステルが、廃ポリエステルから再生された芳香族ポリエステルであることが好ましいことがわかった。原因は定かではないが、廃ポリエステルから再生された芳香族ポリエステルからなるマルチフィラメント糸は、ポリエステルのバージンチップから製造されたマルチフィラメント糸に比べ低強度かつ高伸度であり、同様の低強度かつ高伸度という特徴を持つ脂肪族ポリエステルマルチフィラメント糸との相性が良く、可縫性に優れたミシン糸が得られると考えられる。これに対して、バージンチップから製造された芳香族ポリエステルマルチフィラメント糸は高強力かつ低伸度であるため、脂肪族ポリエステル原糸との物性特性の差が大きく、合撚しても可縫性に優れたミシン糸が得られ難い傾向にある。 Furthermore, in the polyester sewing thread of the present invention, it was found that the aromatic polyester is preferably an aromatic polyester regenerated from waste polyester. The cause is not clear, but the multifilament yarn made of aromatic polyester regenerated from waste polyester has lower strength and higher elongation than multifilament yarn made from polyester virgin chips, and the same low strength and It is considered that a sewing thread having a good compatibility with an aliphatic polyester multifilament thread having a high elongation characteristic and having excellent sewability can be obtained. In contrast, aromatic polyester multifilament yarns made from virgin chips have high strength and low elongation, so there is a large difference in physical properties from aliphatic polyester yarns, and they can be sewn even if they are twisted. Therefore, it is difficult to obtain a sewing thread excellent in.
本発明のミシン糸に用いられる各マルチフィラメント糸の物性は、脂肪族ポリエステルマルチフィラメント糸の強度が３〜５ｃＮ／ｄｔｅｘ、伸度が２０〜４０％、芳香族ポリエステルマルチフィラメント糸の強度が３〜６ｃＮ／ｄｔｅｘ、伸度が２０〜４０％であることが好ましい。 The physical properties of each multifilament yarn used in the sewing thread of the present invention are as follows: the aliphatic polyester multifilament yarn has a strength of 3 to 5 cN / dtex, the elongation is 20 to 40%, and the aromatic polyester multifilament yarn has a strength of 3 to 3. 6cN / dtex and the elongation is preferably 20 to 40%.
上記の廃ポリエステルから再生された芳香族ポリエステルとしては、例えばＰＥＴボトルなどを洗浄、粉砕した廃ポリエステルを再溶融して得られる（いわゆる、マテリアルリサイクルされた）芳香族ポリエステル、廃ポリエステルを化学分解し回収したポリエステル原料を再重合して得られる（いわゆる、ケミカルリサイクルされた）芳香族ポリエステルなどを例示することができる。但し、前者の場合、廃ポリエステルは、不純物を含んでいることが多く、また品質なども異なっていることが多いため、これを再溶融してマルチフィラメント糸を成形する場合、製糸工程が不安定となり、効率よく再生マルチフィラメント糸を製造することが難しい。よって、後者のように、廃ポリエステルを化学分解し回収したポリエステル原料を再重合して得られる芳香族ポリエステルを用いることが望ましい。 As the aromatic polyester regenerated from the above-mentioned waste polyester, for example, a PET bottle is washed and pulverized waste polyester is remelted (so-called material recycled) aromatic polyester, waste polyester is chemically decomposed. Examples thereof include aromatic polyesters (so-called chemical recycling) obtained by repolymerizing the recovered polyester raw material. However, in the former case, waste polyester often contains impurities, and the quality is often different. Therefore, when remelting this to form multifilament yarn, the yarn making process is unstable. Thus, it is difficult to efficiently produce recycled multifilament yarn. Therefore, as in the latter case, it is desirable to use an aromatic polyester obtained by repolymerizing a polyester raw material obtained by chemically decomposing waste polyester.
本発明のミシン糸は、少なくとも上述した脂肪族ポリエステルマルチフィラメント糸と芳香族ポリエステルマルチフィラメント糸とからなること、さらに、それぞれのマルチフィラメント糸に撚係数が４０００〜７０００の下撚が施され、さらにこれらを合糸して撚係数が５０００〜８０００の上撚が施されていることが肝要である。撚係数が上記範囲を下回ると、マルチフィラメントが糸軸方向へ十分に収束しないため、ミシン糸として十分な強度が得られない。また逆に、撚係数が上記範囲を上回ると、強撚により脂肪族ポリエステルマルチフィラメント糸に過度な負荷が掛かり、強度が低下するため、ミシン糸として十分な強度が得られない。なお、撚係数は下記式により算出することができる。
撚係数ｋ＝ｔ×√ｄ
ここで、ｔは撚数（Ｔ／ｍ）、ｄは総繊度を表す。
The sewing thread of the present invention is composed of at least the above-described aliphatic polyester multifilament yarn and aromatic polyester multifilament yarn, and further, each multifilament yarn is subjected to a lower twist of 4000 to 7000, It is essential that these are combined and a twist coefficient of 5000 to 8000 is applied. When the twist coefficient is less than the above range, the multifilament does not sufficiently converge in the yarn axis direction, so that sufficient strength as a sewing thread cannot be obtained. On the other hand, if the twisting coefficient exceeds the above range, an excessive load is applied to the aliphatic polyester multifilament yarn due to strong twisting and the strength is lowered, so that sufficient strength as a sewing yarn cannot be obtained. The twist coefficient can be calculated by the following formula.
Twist coefficient k = t × √d
Here, t represents the number of twists (T / m), and d represents the total fineness.
本発明のミシン糸は、例えば次の方法により製造するとができる。先ず、脂肪族ポリエステルマルチフィラメント糸および芳香族ポリエステルマルチフィラメント糸にそれぞれ下撚が施され、さらに得られた下撚糸が引き揃えられ上撚が施される。この際、下撚および上撚は、例えばリング撚糸機などを用いて行うことができる。脂肪族ポリエステルマルチフィラメント糸および芳香族ポリエステルマルチフィラメント糸からなる下撚糸はそれぞれ１本であっても複数本であってもよく、例えば、各１本の下撚糸を用いた場合は２子撚糸、脂肪族ポリエステルマルチフィラメント糸の下撚糸２本および芳香族ポリエステルマルチフィラメント糸の下撚糸１本を用いた場合は３子撚糸と呼ばれる糸構造からなるミシン糸が得られる。本発明のミシン糸においては、好ましくは２〜３子撚糸、より好ましくは３子撚糸の糸構造が望ましい。 The sewing thread of the present invention can be manufactured, for example, by the following method. First, each of the aliphatic polyester multifilament yarn and the aromatic polyester multifilament yarn is subjected to a lower twist, and the obtained lower twist yarn is drawn and subjected to an upper twist. At this time, the lower twist and the upper twist can be performed using, for example, a ring twisting machine. The number of the lower twist yarns composed of the aliphatic polyester multifilament yarn and the aromatic polyester multifilament yarn may be one or plural, for example, when each one of the lower twist yarns is used, When two lower twist yarns of aliphatic polyester multifilament yarn and one lower twist yarn of aromatic polyester multifilament yarn are used, a sewing thread having a yarn structure called a triple-twist yarn is obtained. In the sewing thread of the present invention, a thread structure of preferably 2-3 stranded yarns, more preferably 3 stranded yarns is desirable.
それぞれのマルチフィラメント糸１本の繊度は３０〜１７０ｄｔｅｘ、単繊維フィラメント総本数は６〜５７０本であることが好ましい。また、引き揃え後の総繊度は６０〜５００ｄｔｅｘであることが好ましい。 The fineness of each multifilament yarn is preferably 30 to 170 dtex, and the total number of single fiber filaments is preferably 6 to 570. Moreover, it is preferable that the total fineness after alignment is 60 to 500 dtex.
以上に説明した本発明のミシン糸は、生分解性を有する脂肪族ポリエステルと芳香族ポリエステルとから構成されているので、分別回収（例えば、脂肪族ポリエステルを溶剤に溶解して分離する方法、脂肪族ポリエステルを優先的に加水分解する方法、脂肪族ポリエステルを微生物で分解する方法、脂肪族ポリエステルをエステラーゼなどの分解酵素で分解する方法など）により、芳香族ポリエステルを分離して再利用することができる。この場合、分離された芳香族ポリエステルは、そのまま成形して種々の製品とするマテリアルリサイクルであっても、一旦芳香族ポリエステルを構成する原料成分に変換するケミカルリサイクルであっても構わない。もちろん、溶解分離した脂肪族ポリエステルおよび加水分解した脂肪族ポリエステルの構成モノマーも、分離精製処理することにより再利用することができる。また、分別回収されたミシン糸をそのまま加水分解処理し、脂肪族ポリエステルおよび芳香族ポリエステルの原料成分に変換してから分離精製して再利用しても構わない。 The sewing thread of the present invention described above is composed of biodegradable aliphatic polyester and aromatic polyester, so that it can be separated and collected (for example, a method of dissolving and separating an aliphatic polyester in a solvent, The aromatic polyester can be separated and reused by a method of preferentially hydrolyzing an aromatic polyester, a method of decomposing an aliphatic polyester with a microorganism, a method of decomposing an aliphatic polyester with a degrading enzyme such as esterase). it can. In this case, the separated aromatic polyester may be material recycling that is directly molded into various products, or may be chemical recycling that is once converted into a raw material component constituting the aromatic polyester. Of course, the constituent monomers of the dissolved and separated aliphatic polyester and hydrolyzed aliphatic polyester can also be reused by separation and purification treatment. Alternatively, the separated and collected sewing thread may be hydrolyzed as it is, converted into a raw material component of aliphatic polyester and aromatic polyester, separated and purified, and reused.
以下、実施例を挙げて本発明を更に具体的に説明するが、本発明はこれらによって限定されるものではない。なお、実施例に記載の各物性は次の方法で測定した。
（１）マルチフィラメント糸およびミシン糸の強度および伸度
ＪＩＳ Ｌ １０１３に基づいて定速伸長引張試験機であるオリエンテック（株）社製テンシロンを用いて、つかみ間隔２０ｃｍ、引張速度２０ｃｍ／分にて測定した。
（２）可縫性
本縫可縫時間：４枚重ねのＴＲサージ（ポリエステル６５％、レーヨン３５％）を、本縫で所定の回転数にて縫製し、ミシン糸が切断した秒数を測定した。秒数は最大６０秒とした。n＝５回測定し、平均値を求めた。
千鳥縫可縫長：ＴＲサージ１枚を、千鳥縫で７５ｃｍ×５回縫製した時の糸切れ回数をｘ回とし、以下のように千鳥縫可縫長を求めた。n＝５回測定し、平均値を求めた。
千鳥縫可縫長＝３７５／（ｘ＋１）
Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited thereto. The physical properties described in the examples were measured by the following methods.
(1) Strength and elongation of multifilament yarn and sewing thread Using a Tensilon manufactured by Orientec Co., Ltd., which is a constant speed extension tensile tester based on JIS L 1013, the grip interval is 20 cm and the tensile speed is 20 cm / min. Measured.
(2) Sewability Sewing time for main sewing: Four-layered TR surge (65% polyester, 35% rayon) is sewn at the specified number of revolutions in main sewing, and the number of seconds that the sewing thread is cut is measured. did. The maximum number of seconds was 60 seconds. n = 5 measurements were made and the average value was determined.
Staggered stitch length: When one TR surge was sewed 75 cm × 5 times by zigzag stitching, the thread breakage number was x, and the staggered stitch length was determined as follows. n = 5 measurements were made and the average value was determined.
Staggered stitch length = 375 / (x + 1)
［参考例１：脂肪族ポリエステルマルチフィラメント糸の調整］
Ｌラクチド（株式会社武蔵野化学研究所製、光学純度１００％）１００重量部に対し、オクチル酸スズを０．００５重量部加え、窒素雰囲気下、攪拌翼のついた反応機にて、１８０℃で２時間反応し、オクチル酸スズに対し１．２倍当量のリン酸を添加し、その後、１３．３ｋＰａで残存するラクチドを除去し、チップ化し、融点が１７２℃のポリＬ乳酸チップを得た。
上記のポリＬ乳酸チップを６０℃に設定した真空乾燥機で４８時間乾燥し、乾燥したチップを日本製鋼製１軸溶融紡糸機で溶融し、紡糸パックに導入し、丸断面型吐出孔３６個を有する紡糸口金から紡出した。紡出した糸条を冷却固化後に油剤を付与し、引き取りローラーにて引き取った後、加熱延伸ローラーを用いて８０℃下で４．９倍に延伸し、強度３．６ｃＮ／ｄｔｅｘ、伸度２３．０％の１６７ｄｔｅｘ、３６フィラメントのマルチフィラメント糸とした。
[Reference Example 1: Adjustment of aliphatic polyester multifilament yarn]
To 100 parts by weight of L-lactide (manufactured by Musashino Chemical Laboratory, Inc., 100% optical purity), 0.005 part by weight of octyltinate was added, and the reaction was carried out at 180 ° C. in a reactor equipped with a stirring blade in a nitrogen atmosphere. After reacting for 2 hours, 1.2 times equivalent of phosphoric acid to tin octylate was added, and then the remaining lactide was removed at 13.3 kPa to form chips, and a poly-L lactic acid chip having a melting point of 172 ° C. was obtained. .
The above poly-L-lactic acid chips were dried for 48 hours with a vacuum dryer set at 60 ° C., and the dried chips were melted with a uniaxial melt spinning machine made by Nippon Steel, introduced into a spinning pack, and 36 round-section discharge holes Spinning from a spinneret with The spun yarn was cooled and solidified, and then an oil agent was applied, taken up by a take-up roller, and then drawn 4.9 times at 80 ° C. using a heated drawing roller, and the strength was 3.6 cN / dtex and the elongation was 23. 0.0% 167 dtex, 36 filament multifilament yarn.
［参考例２：廃ポリエステルから再生された芳香族ポリエステルマルチフィラメント糸の調整］
エチレングリコール２００部を５００ｍｌセパラブルフラスコに投入し、更に炭酸ソーダ１．５部、粉砕されたＰＥＴボトル等からなるポリエチレンテレフタレート屑５０部を投入し、撹拌しながら昇温して、１８５℃とした。この状態を４時間保持したところ、ポリエチレンテレフタレート屑は溶解し解重合反応が完結した。得られた解重合物を減圧蒸留で濃縮し、留分としてエチレングリコール１５０部回収した。この濃縮液にエステル交換反応触媒として炭酸ソーダ０．５部とＭｅＯＨ１００部を投入し、常圧で液温を７５℃、１時間撹拌し、エステル交換反応を実施した。得られた混合物を４０℃まで冷却し、ガラス製フィルターで濾過した。フィルター上に回収できた粗テレフタル酸ジメチルを１００部のＭｅＯＨ中に投入し、４０℃に加温・撹拌洗浄し、再度ガラス製のフィルターで濾過した。この洗浄は２回繰り返した。フィルター上に捕捉できた粗テレフタル酸ジメチルを蒸留装置に仕込み、圧力６．６５ｋＰａ還流比０．５の条件で減圧蒸留を実施し、留分としてテレフタル酸ジメチルを得た。留分は４７部回収できた。釜残を測定しテレフタル酸ジメチル量を測定すると２部であり、投入したポリエステルを基準にするとテレフタル酸ジメチルの反応率は９３重量％であった。蒸留により精製された回収テレフタル酸ジメチル中には、２−ヒドロキシテレフタル酸ジメチルが０．５重量ｐｐｍ検出された。精製された回収テレフタル酸ジメチルの品質は、純度９９．９重量％以上であった。
[Reference Example 2: Preparation of aromatic polyester multifilament yarn regenerated from waste polyester]
200 parts of ethylene glycol was put into a 500 ml separable flask, 1.5 parts of sodium carbonate, 50 parts of polyethylene terephthalate scraps made of crushed PET bottles, etc. were added, and the temperature was raised to 185 ° C. while stirring. . When this state was maintained for 4 hours, the polyethylene terephthalate waste was dissolved and the depolymerization reaction was completed. The obtained depolymerized product was concentrated by distillation under reduced pressure, and 150 parts of ethylene glycol was recovered as a fraction. To this concentrated liquid, 0.5 part of sodium carbonate and 100 parts of MeOH were added as a transesterification reaction catalyst, and the liquid temperature was stirred at normal pressure at 75 ° C. for 1 hour to carry out the transesterification reaction. The resulting mixture was cooled to 40 ° C. and filtered through a glass filter. The crude dimethyl terephthalate recovered on the filter was put into 100 parts of MeOH, heated to 40 ° C. with stirring and washed, and filtered again with a glass filter. This washing was repeated twice. Crude dimethyl terephthalate that could be captured on the filter was charged into a distillation apparatus and distilled under reduced pressure under a pressure of 6.65 kPa at a reflux ratio of 0.5 to obtain dimethyl terephthalate as a fraction. 47 parts of the fraction could be recovered. The residue in the kettle was measured and the amount of dimethyl terephthalate was measured to be 2 parts, and the reaction rate of dimethyl terephthalate was 93% by weight based on the charged polyester. In the recovered dimethyl terephthalate purified by distillation, 0.5 weight ppm of dimethyl 2-hydroxyterephthalate was detected. The purified recovered dimethyl terephthalate had a purity of 99.9% by weight or more.
上記製法にて製造したテレフタル酸ジメチル１００部とエチレングリコール７０部との混合物に、エステル交換反応触媒として二酢酸マンガン四水和物０．０３１５部を撹拌機、精留塔及びメタノール留出コンデンサーを設けた反応器に仕込み、１４０℃から２４０℃に昇温しながらエステル交換反応させた。エステル交換反応終了後、安定剤としてリン酸トリメチル０．０２０２部、重合触媒として三酸化二アンチモン０．０４０５部を添加し、反応生成物を重合容器に移し、２８５℃まで昇温し、２６．６７Ｐａ以下の高真空で重縮合反応を行って、固有粘度０．６３、ジエチレングリコール量が０．７重量％であるポリエステルを得た。得られたポリエチレンテレフタレートを１２０℃に設定した真空乾燥機で１２時間乾燥し、乾燥したチップを日本製鋼製１軸溶融紡糸機で溶融し、紡糸パックに導入し、丸断面型吐出孔３６個を有する紡糸口金から紡出した。紡出した糸条を冷却固化後に油剤を付与し、引き取りローラーにて引き取った後、加熱延伸ローラーを用いて１２０℃下で４．９倍に延伸し、強度５．８ｃＮ／ｄｔｅｘ、伸度２３．５％の、１６７ｄｔｅｘ、３６フィラメントのマルチフィラメント糸とした。 To a mixture of 100 parts of dimethyl terephthalate and 70 parts of ethylene glycol produced by the above production method, 0.0315 parts of manganese diacetate tetrahydrate as a transesterification reaction catalyst was added with a stirrer, a rectifying column and a methanol distillation condenser. The reactor was charged and the ester exchange reaction was carried out while raising the temperature from 140 ° C to 240 ° C. After completion of the transesterification reaction, 0.0202 part of trimethyl phosphate as a stabilizer and 0.0405 part of antimony trioxide as a polymerization catalyst are added, the reaction product is transferred to a polymerization vessel, the temperature is raised to 285 ° C., and 26. A polycondensation reaction was performed under a high vacuum of 67 Pa or less to obtain a polyester having an intrinsic viscosity of 0.63 and a diethylene glycol amount of 0.7% by weight. The obtained polyethylene terephthalate was dried with a vacuum dryer set at 120 ° C. for 12 hours, the dried chips were melted with a uniaxial melt spinning machine made by Nippon Steel, introduced into a spinning pack, and 36 round-section discharge holes were formed. It was spun from the spinneret it had. The spun yarn was cooled and solidified, and then an oil agent was applied, taken up by a take-up roller, and then drawn 4.9 times at 120 ° C. using a heat-drawing roller, with a strength of 5.8 cN / dtex and an elongation of 23 5% 167 dtex, 36 filament multifilament yarn.
［参考例３：芳香族ポリエステルマルチフィラメント糸の調整］
融点が２５６℃で固有粘度が０．６３のポリエチレンテレフタレート（帝人ファイバー製）を［参考例２］と同法にて紡糸及び延伸し、強度７．２ｃＮ／ｄｔｅｘ、伸度１９．３％の、１６７ｄｔｅｘ、３６フィラメントのマルチフィラメント糸とした。
[Reference Example 3: Adjustment of aromatic polyester multifilament yarn]
Polyethylene terephthalate (manufactured by Teijin Fibers) having a melting point of 256 ° C. and an intrinsic viscosity of 0.63 was spun and stretched in the same manner as in [Reference Example 2], and had a strength of 7.2 cN / dtex and an elongation of 19.3%. A multifilament yarn of 167 dtex and 36 filaments was used.
［実施例１］
［参考例１］の脂肪族ポリエステルマルチフィラメント糸２本、［参考例２］の廃ポリエステルから再生された芳香族ポリエステルマルチフィラメント糸１本にそれぞれＳ方向に４５０Ｔ／ｍ（撚係数５８００）の下撚を施し、この下撚糸を３本引き揃えてＺ方向に３００Ｔ／ｍ（撚係数６７２０）の上撚を施し３子撚糸を作成した。上撚および下撚はいずれもリング撚糸機を用いて行った。該３子撚糸を染色加工し、油剤を付与しながらボビンに巻き上げポリエステルミシン糸を作成した。結果を表１に示す。
[Example 1]
Two aliphatic polyester multifilament yarns of [Reference Example 1] and one aromatic polyester multifilament yarn regenerated from waste polyester of [Reference Example 2] under 450 T / m (twisting factor 5800) in the S direction, respectively. Three twisted yarns were twisted, and three of these lower twisted yarns were aligned, and an upper twist of 300 T / m (twisting coefficient 6720) was applied in the Z direction to prepare a triplet twisted yarn. Both the upper twist and the lower twist were performed using a ring twisting machine. The triple-twisted yarn was dyed and wound on a bobbin while applying an oil agent to prepare a polyester sewing thread. The results are shown in Table 1.
［実施例２］
脂肪族ポリエステルマルチフィラメント糸２本および芳香族ポリエステルマルチフィラメント糸１本に代えて、［参考例１］の脂肪族ポリエステルマルチフィラメント糸１本および［参考例２］の廃ポリエステルから再生された芳香族ポリエステルマルチフィラメント糸２本を用いた他は［実施例１］と同法にてポリエステルミシン糸を作成した。結果を表１に示す。
[Example 2]
Instead of two aliphatic polyester multifilament yarns and one aromatic polyester multifilament yarn, aromatic regenerated from one aliphatic polyester multifilament yarn of [Reference Example 1] and waste polyester of [Reference Example 2] A polyester sewing thread was prepared in the same manner as in [Example 1] except that two polyester multifilament yarns were used. The results are shown in Table 1.
［実施例３］
下撚を４５０Ｔ／ｍから５００Ｔ／ｍ（撚係数６４５０）に、上撚を３００Ｔ／ｍから３５０Ｔ／ｍ（撚係数７８４０）に変更した他は［実施例１］と同法にてポリエステルミシン糸を作成した。結果を表１に示す。
[Example 3]
Polyester sewing thread in the same manner as in Example 1 except that the lower twist was changed from 450 T / m to 500 T / m (twist coefficient 6450) and the upper twist was changed from 300 T / m to 350 T / m (twist coefficient 7840). It was created. The results are shown in Table 1.
［実施例４］
下撚を４５０Ｔ／ｍから５００Ｔ／ｍ（撚係数６４５０）に、上撚を３００Ｔ／ｍから３５０Ｔ／ｍ（撚係数７８４０）に変更した他は［実施例２］と同法にてポリエステルミシン糸を作成した。結果を表１に示す。
[Example 4]
Polyester sewing thread in the same manner as in Example 2 except that the lower twist is changed from 450 T / m to 500 T / m (twist factor 6450) and the upper twist is changed from 300 T / m to 350 T / m (twist factor 7840). It was created. The results are shown in Table 1.
［実施例５］
［参考例２］の廃ポリエステルから再生された芳香族ポリエステルマルチフィラメント糸に代えて、［参考例３］の芳香族ポリエステルマルチフィラメント糸を用いた他は［実施例１］と同法にてポリエステルミシン糸を作成した。結果を表１に示す。
[Example 5]
A polyester is produced in the same manner as in [Example 1] except that the aromatic polyester multifilament yarn of [Reference Example 3] is used in place of the aromatic polyester multifilament yarn regenerated from the waste polyester of [Reference Example 2]. A sewing thread was created. The results are shown in Table 1.
［比較例１］
脂肪族ポリエステルマルチフィラメント糸２本および芳香族ポリエステルマルチフィラメント糸１本に代えて、［参考例１］の脂肪族ポリエステルマルチフィラメント糸３本用いた他は［実施例１］と同法にてポリエステルミシン糸を作成した。結果を表１に示す。
[Comparative Example 1]
In place of two aliphatic polyester multifilament yarns and one aromatic polyester multifilament yarn, the same method as in [Example 1] except that three aliphatic polyester multifilament yarns of [Reference Example 1] were used. A sewing thread was created. The results are shown in Table 1.
［比較例２］
下撚を４５０Ｔ／ｍから６００Ｔ／ｍ（撚係数７７４０）に、上撚を３００Ｔ／ｍから４５０Ｔ／ｍ（撚係数１００８０）に変更した他は［実施例１］と同法にてポリエステルミシン糸を作成した。結果を表１に示す。
[Comparative Example 2]
Polyester sewing thread in the same manner as in Example 1 except that the lower twist is changed from 450 T / m to 600 T / m (twist factor 7740) and the upper twist is changed from 300 T / m to 450 T / m (twist factor 10080). It was created. The results are shown in Table 1.
［比較例３］
下撚を４５０Ｔ／ｍから２３０Ｔ／ｍ（撚係数２９７０）に、上撚を３００Ｔ／ｍから１９０Ｔ／ｍ（撚係数４２６０）に変更した他は［実施例１］と同法にてポリエステルミシン糸を作成した。結果を表１に示す。
[Comparative Example 3]
Polyester sewing thread in the same manner as in Example 1 except that the lower twist is changed from 450 T / m to 230 T / m (twist factor 2970) and the upper twist is changed from 300 T / m to 190 T / m (twist factor 4260). It was created. The results are shown in Table 1.
本発明のミシン糸は、衣料、日用品、車両内装材など、リサクルや廃棄に関わる自然環境負荷の低減が求められている繊維製品全般に幅広く用いることができる。 The sewing thread of the present invention can be widely used for all textile products such as clothing, daily necessities, vehicle interior materials, and the like that are required to reduce the burden on the natural environment related to recycling and disposal.
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| JP2009164772A JP2011021282A (en) | 2009-07-13 | 2009-07-13 | Polyester machine sewing thread |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012201998A (en) * | 2011-03-25 | 2012-10-22 | Toray Ind Inc | Finished yarn for sewing thread and sewn product |
| CN106835406A (en) * | 2016-12-15 | 2017-06-13 | 中国纺织科学研究院 | A kind of fabric of the block copolymerization ester fiber of aliphatic polyester containing aromatic polyester and regenerated celulose fibre and preparation method thereof |
| JP2021509448A (en) * | 2018-01-02 | 2021-03-25 | プリマロフト，インコーポレイテッド | Biodegradable synthetic fiber and its manufacturing method |
-
2009
- 2009-07-13 JP JP2009164772A patent/JP2011021282A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012201998A (en) * | 2011-03-25 | 2012-10-22 | Toray Ind Inc | Finished yarn for sewing thread and sewn product |
| CN106835406A (en) * | 2016-12-15 | 2017-06-13 | 中国纺织科学研究院 | A kind of fabric of the block copolymerization ester fiber of aliphatic polyester containing aromatic polyester and regenerated celulose fibre and preparation method thereof |
| JP2021509448A (en) * | 2018-01-02 | 2021-03-25 | プリマロフト，インコーポレイテッド | Biodegradable synthetic fiber and its manufacturing method |
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