JPH04185753A - Production of mixed fiber nonwoven fabric - Google Patents
Production of mixed fiber nonwoven fabricInfo
- Publication number
- JPH04185753A JPH04185753A JP31343090A JP31343090A JPH04185753A JP H04185753 A JPH04185753 A JP H04185753A JP 31343090 A JP31343090 A JP 31343090A JP 31343090 A JP31343090 A JP 31343090A JP H04185753 A JPH04185753 A JP H04185753A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- nonwoven fabric
- polyamide
- shrinkage
- shrinkage rate
- 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 116
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 229920002647 polyamide Polymers 0.000 claims abstract description 39
- 239000004952 Polyamide Substances 0.000 claims abstract description 34
- 229920000728 polyester Polymers 0.000 claims abstract description 31
- 229920000642 polymer Polymers 0.000 claims abstract description 27
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 24
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002844 melting Methods 0.000 claims abstract description 21
- 230000008018 melting Effects 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 150000002009 diols Chemical class 0.000 claims description 5
- 229920001634 Copolyester Polymers 0.000 claims description 2
- 239000002649 leather substitute Substances 0.000 abstract description 14
- 239000004744 fabric Substances 0.000 abstract description 6
- 150000007513 acids Chemical class 0.000 abstract 1
- 239000000306 component Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 17
- 239000002131 composite material Substances 0.000 description 12
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 229920002302 Nylon 6,6 Polymers 0.000 description 5
- 239000008358 core component Substances 0.000 description 5
- 239000012467 final product Substances 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000009998 heat setting 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
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UKFXDFUAPNAMPJ-UHFFFAOYSA-N ethylmalonic acid Chemical compound CCC(C(O)=O)C(O)=O UKFXDFUAPNAMPJ-UHFFFAOYSA-N 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 229920006240 drawn fiber Polymers 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は２合成皮革や人工皮革の用途に適した繊維混合
不織布に関し、さらに詳しくは、熱処理により収縮して
緻密かつ柔軟な風合を発現し、しかも高強力を有し９合
成皮革や人工皮革の基布として好適に使用することがで
きる繊維混合不織布を製造する方法に関するものである
。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a fiber-mixed nonwoven fabric suitable for use in 2 synthetic leathers and artificial leathers, and more specifically, it shrinks upon heat treatment to develop a dense and flexible texture. The present invention also relates to a method for producing a fiber-mixed nonwoven fabric that has high strength and can be suitably used as a base fabric for synthetic leather or artificial leather.
（従来の技術）
従来から、天然皮革に類似した合成繊維からなる不織布
を製造する試みが多くなされている。この不織布には１
通常、緻密さと柔軟さが要求される。このため、不織布
を製造するに際しては、溶解特性を異にする２種の重合
体成分からなる極細繊維発生型複合繊維のシートにポリ
ウレタンを付与した後、一方の重合体成分を除去する方
法（特公昭４８−１９９２２号公報）、高収縮性繊維と
易分割性複合繊維とからなるウェブに交絡・収縮処理及
び易分割性複合繊維の分割処理を施す方法（特開昭５３
−１２２８７５号公報）等により、不織布を構成する繊
維を細デニール化することが図られている。(Prior Art) Many attempts have been made to produce nonwoven fabrics made of synthetic fibers similar to natural leather. This non-woven fabric has 1
Typically, precision and flexibility are required. For this reason, when manufacturing nonwoven fabrics, a method is used in which polyurethane is applied to a sheet of ultrafine fiber-generating composite fibers made of two types of polymer components with different solubility characteristics, and then one of the polymer components is removed (in particular, 19922), a method of subjecting a web consisting of highly shrinkable fibers and easily splittable conjugate fibers to an intertwining/shrinking process and a splitting process of easily splittable conjugate fibers (JP-A-1982-1992)
122875), etc., attempts are made to make the fibers constituting the nonwoven fabric finer in denier.
しかしながら、前記溶解特性を異にする２種の重合体成
分からなる極細繊維発生型複合繊維を使用する方法では
、極細繊維を容易に得ることができるという点では有利
であるが、溶剤処理を行うた於コストが上昇し、しかも
得られる不織布は緻密さに欠けるという問題があった。However, the method of using ultrafine fiber-generating composite fibers made of two types of polymer components with different solubility characteristics is advantageous in that ultrafine fibers can be easily obtained, but it requires solvent treatment. However, there were problems in that the cost increased and the resulting nonwoven fabric lacked density.
また、高収縮性繊維と易分割性複合繊維とを使用する方
法では。Also, in a method using high shrinkage fibers and easily splittable composite fibers.
緻密な不織布を得ることはできるが、複合繊維を使用す
るためコストが上昇し、得られる不織布は収縮性能の経
時安定性に欠け、不織布の強力が不十分で、しかも最終
製品を引張ったときの寸法安定性に劣るという問題があ
った。Although it is possible to obtain a dense nonwoven fabric, the cost increases due to the use of composite fibers, the resulting nonwoven fabric lacks stability in shrinkage performance over time, and the strength of the nonwoven fabric is insufficient, and the final product is difficult to pull. There was a problem of poor dimensional stability.
（発明が解決しようとする課題）
本発明は、前記問題を解決し１合成皮革のみならず１合
成皮革より一層機能・触感の点で天然皮革、特にスェー
ドに近い人工皮革の用途に適した１緻密かつ柔軟な風合
を発現し、しかも高強力を有し９合成皮革や人工皮革の
基布として好適に使用することができる繊維混合不織布
を製造する方法を提供しようとするものである。(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems and provides a material that is suitable for use not only in synthetic leather but also in terms of function and feel, which is more suitable for use as artificial leather that is similar to natural leather, especially suede. The object of the present invention is to provide a method for producing a fiber-mixed nonwoven fabric that exhibits a dense and flexible texture, has high strength, and can be suitably used as a base fabric for synthetic leather or artificial leather.
（課題を解法するための手段）
本発明者らは、前記問題を解決すべく鋭意積別の結果１
本発明に到達した。すなわち１本発明は。(Means for solving the problem) In order to solve the above problem, the present inventors have made an effort to solve the problem.
We have arrived at the present invention. In other words, one aspect of the present invention is.
下記の及び０式で示される収縮率を有する高収縮性ポリ
エステル系繊維Ａと、単糸繊度が２デニール以下のポリ
アミド糸綴ｍＢと、前記繊維Ａ及びＢを構成する各重合
体の融点より低融点のポリアミド系重合体を接着成分と
するポリアミド系繊維Ｃとが混合された繊維混合ウェブ
に加熱収縮処理を施すことを特徴とする繊維混合不織布
の製造方法。A highly shrinkable polyester fiber A having a shrinkage percentage shown by the following formulas and 0, a polyamide thread binding mB having a single yarn fineness of 2 deniers or less, and a fiber having a melting point lower than the melting point of each polymer constituting the fibers A and B. A method for producing a fiber-mixed nonwoven fabric, which comprises subjecting a fiber-mixed web in which polyamide-based fibers C containing a polyamide-based polymer having a melting point as an adhesive component to a heat-shrinking treatment.
２５≦Ｓｏ（％）≦７０ ■△Ｓ
（％）≦５ ・ ■〔ＳＯ（％）は製
造直後の繊維を温度１７０ ｔで１５分間乾熱処理した
ときの収縮率であり、△Ｓ（％）は製造直後の繊維を温
度４０℃で５週間放置後、温度１７０℃で１５分間乾熱
処理したときの収縮率と前記収縮率Ｓｏ（％）との差で
ある。〕
を要旨とするものである。25≦So(%)≦70 ■△S
(%)≦5 ・ ■[SO (%) is the shrinkage rate when the fiber immediately after production is subjected to dry heat treatment at a temperature of 170 t for 15 minutes, and △S (%) is the shrinkage rate when the fiber immediately after production is subjected to dry heat treatment at a temperature of 40 °C. This is the difference between the shrinkage rate So (%) and the shrinkage rate when dry heat treatment was performed at a temperature of 170° C. for 15 minutes after being left for a week. ] The gist is as follows.
次に１本発明の詳細な説明する。Next, one aspect of the present invention will be explained in detail.
本発明の不織布の製造方法の第１の特徴は、高収縮性ポ
リエステル系繊維Ａを不織布の第１の成分として使用す
る点にある。この高収縮性ポリエステル系繊維入とは、
ポリエチレンテレフタレートに第３成分として結晶性を
低下させるような成分９例えばジエチレングリコール、
１．２−プロパンジオール、ネオペンチルグリコール、
１．】−プロパンジカルボン酸、フタル酸、イソフタル
酸、ビスフェノールＡ等から選ばれる１種以上の成分を
共重合した共重合体からなるものである。特に、フタル
酸、イソフタル酸、プロパンジカルボン酸等のジカルボ
ン酸を共重合成分とし、かつテレフタル酸／テレフタル
酸以外のジカルボン酸のモル比が９６／４〜８ｇ／１２
の酸成分とエチレングリコール成分とからなる共重合ポ
リエステルを用いると。The first feature of the nonwoven fabric manufacturing method of the present invention is that high shrinkage polyester fiber A is used as the first component of the nonwoven fabric. What is this high shrinkage polyester fiber?
A component 9 that reduces crystallinity as a third component in polyethylene terephthalate, such as diethylene glycol,
1.2-propanediol, neopentyl glycol,
1. ] - Consisting of a copolymer of one or more components selected from propanedicarboxylic acid, phthalic acid, isophthalic acid, bisphenol A, etc. In particular, dicarboxylic acids such as phthalic acid, isophthalic acid, and propanedicarboxylic acid are copolymerized components, and the molar ratio of terephthalic acid/dicarboxylic acid other than terephthalic acid is 96/4 to 8 g/12.
When a copolymerized polyester consisting of an acid component and an ethylene glycol component is used.
あるいはジエチレングリコール、１，２−プロパンジオ
ール、ネオペンチルグリコール等のジオールを共重合成
分とし、かつエチレングリコール／エチレングリコール
以外のジオールのモル比が９６７４〜８８／１２のジオ
ール成分とテレフタル酸成分とからなる共重合ポリエス
テルを用いると、−層級密かつ柔軟な風合いの不織布を
得ることができて好ましい。Alternatively, the copolymerization component is a diol such as diethylene glycol, 1,2-propanediol, neopentyl glycol, etc., and the molar ratio of ethylene glycol/diol other than ethylene glycol is 9674 to 88/12, and the diol component and terephthalic acid component are used. It is preferable to use a copolymerized polyester because it is possible to obtain a nonwoven fabric with a dense and flexible texture.
本発明でいう高収縮性ポリエステル系繊維Ａは。The high shrinkage polyester fiber A in the present invention is.
製造直後の繊維を温度１７０℃で１５分間乾熱処理した
ときの収縮率Ｓｏが前記■式を、かつ製造直後の繊維を
温度４０℃で５週間放置後、温度１７０ ｔで１５分間
乾熱処理したときの収縮率と前記収縮率ＳＯとの差△Ｓ
が前記０式をそれぞれ満足するものである。この高収縮
性ポリエステル糸綴′ＩＪＩＡにおいては、前記収縮率
Ｓｏが２５％より低くなると。When the fiber immediately after production is subjected to dry heat treatment at a temperature of 170 °C for 15 minutes, the shrinkage rate So is the above formula (2), and when the fiber immediately after production is left at a temperature of 40 °C for 5 weeks and then dry heat treated at a temperature of 170 t for 15 minutes. The difference between the shrinkage rate and the shrinkage rate SO
satisfy each of the above equations. In this highly shrinkable polyester thread binding IJIA, the shrinkage rate So is lower than 25%.
加熱収縮処理を施すとき不織布としての締まりに劣り１
Ｍ１密な不織布を得ることができず好ましくない。一方
、前記収縮率Ｓｏが７０％より高くなると、不織布が緻
密になり過ぎて不織布の触感が硬くなるので好ましくな
い。また、この高収縮性ポリエステル系繊維Ａにおいて
は、前記収縮率差△Ｓが５％を超えると、不織布製造ロ
フト間に不織布の緻密さや柔軟さのバラツキが生じ１品
質的に不安定となるので好ましくない。Poor firmness as a nonwoven fabric when subjected to heat shrinkage treatment1
M1: It is not possible to obtain a dense nonwoven fabric, which is not preferable. On the other hand, if the shrinkage rate So is higher than 70%, the nonwoven fabric becomes too dense and the nonwoven fabric has a hard feel, which is not preferable. In addition, in this highly shrinkable polyester fiber A, if the shrinkage rate difference ΔS exceeds 5%, the density and flexibility of the nonwoven fabric will vary between nonwoven fabric manufacturing lofts, resulting in unstable quality. Undesirable.
本発明の不織布の製造方法の第２の特徴は、単糸繊度が
２デニール以下のポリアミド系繊維Ｂを第２の成分とし
て使用する点にある。一般に、ポリアミド系繊維は１本
発明でいう前記ポリエステル系繊維Ａよりも熱収縮率が
低い。したがって。A second feature of the nonwoven fabric manufacturing method of the present invention is that polyamide fiber B having a single filament fineness of 2 deniers or less is used as the second component. Generally, polyamide fibers have a lower heat shrinkage rate than the polyester fiber A mentioned in the present invention. therefore.
ポリアミド系繊維をポリエステル系繊維と混合したとき
、ポリエステル系繊維との収縮率差により柔軟さに優れ
たポリアミド系繊維が不織布の表面部分に現出し、柔軟
な風合の不織布を得ることができる。When polyamide fibers are mixed with polyester fibers, polyamide fibers with excellent flexibility appear on the surface of the nonwoven fabric due to the difference in shrinkage rate with the polyester fibers, making it possible to obtain a nonwoven fabric with a flexible texture.
本発明でいうポリアミド系繊維Ｂにおいては。In the polyamide fiber B referred to in the present invention.
単糸繊度が２デニール以下、好ましくは０．８デニール
以下であることが必要で、この単糸繊度が小さいほどス
ェード調の人工皮革に近い触感を得ることができる。前
記単糸繊度が２デニールを超えると、不織布の柔軟さが
低下するので好ましくない。It is necessary that the single yarn fineness is 2 denier or less, preferably 0.8 denier or less, and the smaller the single yarn fineness is, the closer the texture to suede-like artificial leather can be obtained. When the single yarn fineness exceeds 2 deniers, the flexibility of the nonwoven fabric decreases, which is not preferable.
本発明の不織布の製造方法の第３の特徴は、前記繊維Ａ
及びＢを構成する各重合体の融点より低融点のポリアミ
ド系重合体を接着成分とするポリアミド系繊維Ｃを第３
の成分として使用する点にある。このポリアミド系繊維
Ｃは、ｊＩ−重合体からなる金融型の繊維でもよく、高
融点重合体を芯成分、低融点重合体を鞘成分とする芯鞘
型複合繊維であってもよい。芯鞘型複合繊維としては、
ポリヘキサメチレンアジパミドを芯成分とし、ポリへキ
サメチレンアジパミドより低融点のポリカブラミドや共
重合ポリアミドを鞘成分とする芯鞘型複合繊維が好まし
く１例えば、ポリヘキサメチレンアジパミド（融点２５
５℃）を芯成分、ポリカブラミド（融点２２０℃）を鞘
成分とする複合繊維としてユニメル）ＵＨ−６０（ユニ
チカ株式会社製。The third feature of the method for producing a nonwoven fabric of the present invention is that the fiber A
and a third polyamide fiber C whose adhesive component is a polyamide polymer having a melting point lower than that of each polymer constituting B.
The point is that it is used as an ingredient. The polyamide fiber C may be a financial type fiber made of a jI-polymer, or a core-sheath type composite fiber having a high melting point polymer as a core component and a low melting point polymer as a sheath component. As a core-sheath type composite fiber,
Core-sheath type composite fibers are preferable, which have polyhexamethylene adipamide as a core component and polycabramide or copolyamide, which has a lower melting point than polyhexamethylene adipamide, as a sheath component. 25
5°C) as a core component and polycabramide (melting point 220°C) as a sheath component, Unimel) UH-60 (manufactured by Unitika Co., Ltd.) was used.
商標）やヘテロフィル（ＩＣＩ社製、商標）が。Trademark) and Heterophil (trademark, manufactured by ICI).
また、ポリヘキサメチレンアジパミドを芯成分。In addition, the core component is polyhexamethylene adipamide.
共重合ポリアミドを鞘成分とする複合繊維としてユニメ
ル）ＵＭ−６０（鞘部重合体の融点１６０ ｔ。Unimel) UM-60 (melting point of sheath polymer: 160 t) as a composite fiber containing copolyamide as a sheath component.
ユニチカ株式会社製、商標）やユニメル）ＵＬ−６０（
鞘部重合体の融点１４０℃、ユニチカ株式会社製、商標
）が挙げられる。なお１本発明でいうポリアミド系繊維
Ｃを構成する重合体の種類は、前記ポリアミド系繊維Ｂ
を構成する重合体の種類により適宜選択する。例えば、
前記ポリアミド系繊ｍＢがポリへキサメチレンアジパミ
ドである場合には、ポリアミド系繊維Ｃとして前記で例
示したいずれの複合繊維をも使用することができる。−
方、前記ポリアミド系繊維Ｂがポリカブラミド（融点２
２０℃）である場合には、前記ユニメル）ＵＭ−６０や
ユニメル）ＵＬ−６０のような融点が２１５℃辺下の重
合体からなる繊維を使用する。このポリアミド系繊維Ｃ
により、不織布の柔軟さを保持したまま、不織布の強力
を向上させることができ。Manufactured by Unitika Co., Ltd. (trademark) and Unimel) UL-60 (
The melting point of the sheath polymer is 140° C. (manufactured by Unitika Co., Ltd., trademark). Note that the type of polymer constituting the polyamide fiber C in the present invention is the polyamide fiber B mentioned above.
It is selected as appropriate depending on the type of polymer constituting the polymer. for example,
When the polyamide fiber mB is polyhexamethylene adipamide, any of the composite fibers listed above can be used as the polyamide fiber C. −
On the other hand, the polyamide fiber B is polycabramide (melting point 2
20°C), fibers made of a polymer having a melting point of 215°C or lower, such as Unimel UM-60 or Unimel UL-60, are used. This polyamide fiber C
This makes it possible to improve the strength of the nonwoven fabric while maintaining its flexibility.
したがって不織布を合成皮革や人工皮革の基布として使
用するに際し、最終製品を引張ったときの寸法安定性が
向上する。Therefore, when the nonwoven fabric is used as a base fabric for synthetic leather or artificial leather, the dimensional stability of the final product when stretched is improved.
本発明の不織布の製造方法は、前記（１）及び（２）式
で示される収縮率を有する高収縮性ポリエステル繊維Ａ
と、単糸繊度が２デニール以下のポリアミド系繊維Ｂと
、前記繊維Ａ及びＢを構成する各重合体の融点より低融
点のポリアミド系重合体を接着成分とするポリアミド系
繊維Ｃとを混合して繊維混合ウェブとし１次いで前記ウ
ェブに加熱収縮処理を施すことからなるものである。繊
維混合ウェブに加熱収縮処理を施すに先立ち、交絡処理
を施してもよい。この交絡処理を施すに際しては。The method for producing a nonwoven fabric of the present invention comprises a highly shrinkable polyester fiber A having a shrinkage rate represented by the above formulas (1) and (2).
, a polyamide fiber B having a single filament fineness of 2 denier or less, and a polyamide fiber C having an adhesive component of a polyamide polymer having a melting point lower than the melting point of each polymer constituting the fibers A and B. This process consists of first preparing a fiber mixed web, and then subjecting the web to a heat shrinkage treatment. Before the fiber mixed web is subjected to heat shrinkage treatment, it may be subjected to entanglement treatment. When performing this confounding process.
ニードルパンチ法、ウォーターニードル（スパンレース
）法２エアーニードル法等、公知の方法を用いることが
できる。加熱収縮処理を施すに際しては、熱風循環ドラ
イヤ、熱風貫流ドライヤ、サクションドラムドライヤ等
のドライヤ、低線圧のフラットカレンダーロール、エン
ボスロール等のヒートロール等の熱処理装置を用い、目
標収縮率に応じた処理温度、高くともポリエステル系繊
維Ａ又はポリアミド系繊維Ｂ等、ウェブを構成する繊維
の内、低融点の方の繊維の融点以下、ポリアミド系繊維
Ｃの接着成分であるポリアミド系重合体の融点以上の温
度で処理を行えばよい。Known methods such as the needle punch method, water needle (spunlace) method, and air needle method can be used. When performing heat shrinkage treatment, heat treatment equipment such as dryers such as hot air circulation dryers, hot air flow dryers, and suction drum dryers, heat rolls such as low linear pressure flat calendar rolls, and embossing rolls are used to achieve the desired shrinkage rate. The processing temperature is at most below the melting point of the fiber with a lower melting point among the fibers constituting the web, such as polyester fiber A or polyamide fiber B, and above the melting point of the polyamide polymer that is the adhesive component of polyamide fiber C. The treatment can be carried out at a temperature of
本発明の不織布の製造方法において、使用するポリエス
テル系重合体には１本発明の効果を損なわない範囲で前
記した以外の他の成分を共重合してもよく、また、ＷＡ
消剤、安定剤１着色剤等の添加剤を添加してもよい。In the method for producing a nonwoven fabric of the present invention, other components other than those described above may be copolymerized with the polyester polymer used within the range that does not impair the effects of the present invention.
Additives such as eraser, stabilizer 1 and coloring agent may be added.
本発明の不織布の製造方法において、使用する高収縮性
ポリエステル系繊維Ａは、常法にしたがって、エステル
化又はエステル交換反応の後１重縮合反応を行って得た
ポリエステル系重合体を溶融紡糸し、得られた未延伸繊
維糸状を通常より低い温度の延伸ローラを使用して延伸
することにより製造することができる。このとき、延伸
後の熱セットは行わないか、または、熱セットを行うと
しても低温で行う。In the method for producing a nonwoven fabric of the present invention, the highly shrinkable polyester fiber A used is obtained by melt-spinning a polyester polymer obtained by performing a single polycondensation reaction after an esterification or transesterification reaction in accordance with a conventional method. It can be produced by stretching the obtained undrawn fiber thread using a drawing roller at a temperature lower than usual. At this time, heat setting after stretching is not performed, or even if heat setting is performed, it is performed at a low temperature.
本発明の不織布の製造方法において、使用する高収縮性
ポリエステル糸綴ｍＡとポリアミド系繊維Ｂとの混合比
（重量比）（Ａ／Ｂ）は、 ８０／２０〜２０／８０程
度とするのが適当である。また、ポリアミド系繊維Ｃの
混合比は、前記繊維入及びＢの総和に対する混合比（重
量比）（Ａ＋Ｂ／Ｃ）として９５１５〜７０／３０程度
とするのが適当である。In the method for producing a nonwoven fabric of the present invention, the mixing ratio (weight ratio) (A/B) of the highly shrinkable polyester yarn mA and polyamide fiber B used is about 80/20 to 20/80. Appropriate. Further, it is appropriate that the mixing ratio of the polyamide fiber C is about 9515 to 70/30 as a mixing ratio (weight ratio) (A+B/C) to the sum of the fibers and B.
これらの繊維を混合するに際しては、−船釣なカード法
、エアーレイ法を用いるが、目的によっては湿式抄紙法
を用いてもよい。なお、不織布の柔軟さを損なわない範
囲で、ポリエステル系のバインダ繊維を混合してもよい
。When these fibers are mixed, a dry card method or an air-lay method is used, but a wet paper-making method may be used depending on the purpose. Note that polyester binder fibers may be mixed within the range that does not impair the flexibility of the nonwoven fabric.
（作用）
本発明の製造方法で得られる不織布は１ｍ密で柔軟な風
合と高強力を有するものである。これは。(Function) The nonwoven fabric obtained by the manufacturing method of the present invention has a density of 1 m, a flexible texture, and high strength. this is.
高収縮性ポリエステル系繊維入が、加熱収縮処理時に収
縮して緻密さを発現し、ポリエステル系繊維Ａとの収縮
率差により柔軟さに優れたポリアミド系繊維Ｂが不織布
の表面部分に現出し、かつ柔軟さに優れたポリアミド系
繊維Ｃが不織布の構成繊維間を接着して高強力を発現す
るたｔである。The highly shrinkable polyester fibers contract during heat shrinkage treatment and develop denseness, and due to the difference in shrinkage rate from the polyester fibers A, the polyamide fibers B, which have excellent flexibility, appear on the surface of the nonwoven fabric. The polyamide fiber C, which has excellent flexibility, adheres between the constituent fibers of the nonwoven fabric and exhibits high strength.
（実施例）
次に、実施例に基づいて本発明を具体的に説明する。な
お、実施例における各種特性は次の方法により測定した
。(Example) Next, the present invention will be specifically described based on Examples. In addition, various characteristics in the examples were measured by the following methods.
相対粘度：フェノールと四塩化エタンの等重量混合溶液
を溶媒とし、試料濃度０．５ ｇ／ｄｉ、温度２０℃で
測定した。Relative viscosity: Measured at a sample concentration of 0.5 g/di and a temperature of 20° C. using an equal weight mixed solution of phenol and tetrachloroethane as a solvent.
強力：不織布を輻２５ｍｍに裁断し、定速伸長型引張試
験機を使用して試料長１００ ｍｍ、引張速度１００ｍ
ｍ／分で測定した。Strong: Cut the nonwoven fabric to a diameter of 25 mm, and use a constant speed extension type tensile tester to test the sample length at 100 mm and tensile speed at 100 m.
Measured in m/min.
剛軟度：ＪＩＳ Ｌ １０９６ ４５度カンチレバ法に
より測定した。Bending resistance: Measured by JIS L 1096 45 degree cantilever method.
風合：１０人のパネラによる官能試験により１次の５段
階で評価した。Texture: Evaluated on a 1-5 scale by a sensory test conducted by 10 panelists.
１：柔らかい、２：やや柔らかい、３：普通。1: Soft, 2: Slightly soft, 3: Average.
４：やや硬い、５：硬い
乾熱収縮率ＳＯ：製造直後から１日以内経過の長さＬＯ
の繊維を温度１７０℃で１５分間乾燥機を用いて熱処理
した後、室温まで冷却した。冷却後の試料の長さし、を
測定し１次の０式にしたがって収縮率Ｓｏを求めた。4: Slightly hard, 5: Hard Dry heat shrinkage rate SO: Length within 1 day after manufacturing LO
The fibers were heat-treated at a temperature of 170° C. for 15 minutes using a dryer, and then cooled to room temperature. The length of the sample after cooling was measured, and the shrinkage rate So was determined according to the first-order 0 equation.
乾熱収縮率差△Ｓ：製造直後から温度４０℃で５週間放
置後の長さＬｏ’の繊維を温度１７０℃で１５分間乾燥
機を用いて熱処理した後、室温まで冷却した。冷却後の
試料の長さり、／を測定し９次の０式にしたがって収縮
率Ｓｏ’を求於、■式にしたがって収縮率差△Ｓを求約
た。Difference in dry heat shrinkage rate ΔS: Immediately after production, the fiber of length Lo′ was left at a temperature of 40° C. for 5 weeks, and then was heat-treated at a temperature of 170° C. for 15 minutes using a drier, and then cooled to room temperature. The length of the sample after cooling was measured, and the shrinkage rate So' was calculated according to the 9th-order 0 equation, and the shrinkage rate difference ΔS was calculated according to the equation (2).
△Ｓ （％）−８ｏ−８ｏ′ ■面積収縮率
ＳＡ ：不織布の加熱収縮処理前の面積ＡＯと処理後の
面積Ａ１を測定し１次の０式にしたがって収縮率Ｓ＾を
求めた。ΔS (%) -8o-8o' ■Area shrinkage rate SA: The area AO before heat shrinkage treatment and the area A1 after treatment of the nonwoven fabric were measured, and the shrinkage rate S^ was determined according to the linear 0 equation.
実施例１
モル比が９２／８のテレフタル酸／イソフタル酸とエチ
レングリコールとからなる相対粘度が１．４５の共重合
ポリエステル重合体を常法により製造し。Example 1 A copolyester polymer having a relative viscosity of 1.45 and consisting of terephthalic acid/isophthalic acid and ethylene glycol in a molar ratio of 92/8 was produced by a conventional method.
溶融紡出した後、温度６５℃の第１延伸ローラと温度７
５℃の第２延伸ローラ間で延伸倍率を３．０として延伸
し、延伸繊維を熱セットすることなく切断して単糸繊度
１．３デニール、切断伸度４９％、繊維長５１ｍｍの共
重合ポリエステル短繊維Ａを製造した。After melt spinning, the first stretching roller at a temperature of 65°C and the temperature at 7
The drawn fibers were stretched at a stretching ratio of 3.0 between second stretching rollers at 5°C, and cut without heat setting to produce a copolymer with a single fiber fineness of 1.3 denier, cutting elongation of 49%, and fiber length of 51 mm. Polyester staple fiber A was produced.
この短繊維の収縮率ＳＯは６２．５％、収縮率差△Ｓは
２．１％であった。The shrinkage rate SO of this short fiber was 62.5%, and the shrinkage rate difference ΔS was 2.1%.
一方、常法にしたがい、単糸繊度０．８デニール。On the other hand, according to the conventional method, the single yarn fineness was 0.8 denier.
繊維長３８ｍｍのポリカブラミド短繊維Ｂを製造した。Polycabramide short fibers B having a fiber length of 38 mm were produced.
次いで、これらの共重合ポリエステル短繊維Ａ。Next, these copolymerized polyester short fibers A.
ホリ力プラミド短繊維Ｂ、ポリへキサメチレンアジパミ
ドを芯成分、共重合ポリアミドを鞘成分とするポリアミ
ド系複合短繊維ユニメル）ＵＬ−６０（鞘部重合体の融
点１４０℃、単糸繊度２デニール。Horiki Pramid short fiber B, polyamide-based composite short fiber Unimel containing polyhexamethylene adipamide as a core component and copolymerized polyamide as a sheath component) UL-60 (melting point of sheath polymer: 140°C, single yarn fineness: 2 Denier.
繊維長５１．ｍ＋ｎ、ユニチカ株式会社製、商標）Ｃを
混合比（重量比）（Ａ／Ｂ／Ｃ）３０／６０／１０で混
綿し、カードに通して目付け１７５ｇ／ｍ２のウェブと
した後、ニードルパンチを施し、温度１６０℃のサクシ
ョンドラム式熱処理機で２分間熱処理して不織布を得た
。得られた不織布の特性を第１表に示す。Fiber length 51. m+n, manufactured by Unitika Co., Ltd., trademark) C was mixed at a mixing ratio (weight ratio) (A/B/C) of 30/60/10, passed through a card to make a web with a basis weight of 175 g/m2, and then needle punched. Then, a nonwoven fabric was obtained by heat treatment for 2 minutes in a suction drum type heat treatment machine at a temperature of 160°C. Table 1 shows the properties of the obtained nonwoven fabric.
この不織布は、ａ密な構造と柔軟な触感を有し。This nonwoven fabric has a dense structure and a soft feel.
かつ強力が高いものであった。And it was highly powerful.
実施例２〜４ テレフタル酸／イソフタル酸のモル比を９６／ ４ 。Examples 2-4 The molar ratio of terephthalic acid/isophthalic acid is 96/4.
９３／７及び８８／１２とした以外は実施例１と同様に
して不織布を得た。得られた不織布の特性を第１表に示
す。A nonwoven fabric was obtained in the same manner as in Example 1 except that the samples were 93/7 and 88/12. Table 1 shows the properties of the obtained nonwoven fabric.
比較実施例１及び２
テレフタル酸／イソフタル酸のモル比を９７／３及び８
５／１５とした以外は実施例１と同様にして不織布を得
た。得られた不織布の特性を第１表に示す。Comparative Examples 1 and 2 The molar ratio of terephthalic acid/isophthalic acid was 97/3 and 8.
A nonwoven fabric was obtained in the same manner as in Example 1 except that the ratio was 5/15. Table 1 shows the properties of the obtained nonwoven fabric.
比較実施例１では、共重合ポリエステル短繊維Ａの収縮
率Ｓｏが低く、得られた不織布は緻密さに欠けるもので
あった。しかも、前記繊維の収縮率差△Ｓが高く、不織
布製造ロフト間に不織布の緻密さや柔軟さのバラツキが
生じ１品質的に不安定であった。In Comparative Example 1, the shrinkage rate So of the copolymerized polyester short fibers A was low, and the obtained nonwoven fabric lacked denseness. Moreover, the shrinkage rate difference ΔS of the fibers was high, and the density and softness of the nonwoven fabric varied between lofts for manufacturing the nonwoven fabric, resulting in unstable quality.
比較実施例２では、共重合ポリエステル短繊維Ａの収縮
率Ｓｏが高いため、得られた不織布は岨密になり過ぎて
剛軟度が高く、シかもウェブの加熱収縮処理時に共重合
ポリエステル短繊維へに部分的な融着が生じ、硬い触感
を有するものであった。In Comparative Example 2, since the shrinkage rate So of the copolymerized polyester short fibers A is high, the resulting nonwoven fabric is too dense and has high bending resistance. Partial fusion occurred on the edges, giving it a hard feel.
実施例５〜７
ポリカブラミド短繊維Ｂの単糸繊度を０．５．１．２及
び２．０デニールとした以外は実施例１と同様にして不
織布を得た。得られた不織布の特性を第１表に示す。Examples 5 to 7 Nonwoven fabrics were obtained in the same manner as in Example 1, except that the single fiber fineness of polycabramide short fibers B was set to 0.5, 1.2 and 2.0 deniers. Table 1 shows the properties of the obtained nonwoven fabric.
比較実施例３
ポリカプラミド短繊Ｍ１Ｂの単糸繊度を３．０デニール
とした以外は実施例１と同様にして不織布を得た。得ら
れた不織布の特性を第１表に示す。Comparative Example 3 A nonwoven fabric was obtained in the same manner as in Example 1 except that the single fiber fineness of the short polycapramide fibers M1B was set to 3.0 denier. Table 1 shows the properties of the obtained nonwoven fabric.
ポリカブラミド短繊維Ｂの単糸繊度が２．０デニールを
超えると、得られた不織布は面積収縮率が低く、ＭＩ密
さに欠け、しかも剛軟度が高く、硬い触感を有するもの
であった。When the single fiber fineness of the polycabramide short fibers B exceeded 2.0 denier, the obtained nonwoven fabric had a low area shrinkage rate, lacked MI density, had high bending resistance, and had a hard feel.
実施例８〜２０及び比較実施例４
共重合ポリエステル短繊維Ａ、ポリカブラミド短繊維Ｂ
及びポリアミド系複合短繊維ユニメルトＵＬ−６０，Ｃ
（７）混合比（重量比＞（Ａ／Ｂ／Ｃ）を第２表に示し
たように変更した以外は実施例１と同様にして不織布を
得た。得られた不織布の特性を第２表に示す。Examples 8 to 20 and Comparative Example 4 Copolymerized polyester staple fiber A, polycabramide staple fiber B
and polyamide composite short fiber Unimelt UL-60,C
(7) A nonwoven fabric was obtained in the same manner as in Example 1 except that the mixing ratio (weight ratio>(A/B/C) was changed as shown in Table 2.The characteristics of the obtained nonwoven fabric were Shown in the table.
比較実施例４では、ポリアミド系複合短繊維Ｃが混合さ
れていないため、得られた不織布は強力が低く、不織布
を合成皮革や人工皮革の基布として使用するに際し、最
終製品を引張ったときの寸法安定性が不十分なものであ
った。In Comparative Example 4, since the polyamide composite short fibers C were not mixed, the strength of the obtained nonwoven fabric was low, and when the nonwoven fabric was used as a base fabric for synthetic leather or artificial leather, the final product was stretched. Dimensional stability was insufficient.
第１表
第２表
（発明の効果）
本発明の不織布の製造方法によれば１合成皮革や人工皮
革の基布として使用したとき、ｍ密かつ柔軟な風合と高
強力を発現し、しかも最終製品を引張ったときの寸法安
定性に優れ、前記用途に好適に使用することができる繊
維混合不織布を容易に製造することができる。Table 1 Table 2 (Effects of the Invention) According to the method for producing a nonwoven fabric of the present invention, when used as a base fabric for synthetic leather or artificial leather, it exhibits a dense and flexible texture and high strength, and also It is possible to easily produce a fiber-mixed nonwoven fabric that has excellent dimensional stability when the final product is stretched and can be suitably used for the above-mentioned purposes.
特許出願人 ユニチカ株式会社Patent applicant: Unitika Co., Ltd.
Claims (3)
る高収縮性ポリエステル系繊維Ａと，単糸繊度が２デニ
ール以下のポリアミド系繊維Ｂと，前記繊維Ａ及びＢを
構成する各重合体の融点より低融点のポリアミド系重合
体を接着成分とするポリアミド系繊維Ｃとが混合された
繊維混合ウエブに加熱収縮処理を施すことを特徴とする
繊維混合不織布の製造方法。 ２５≦Ｓｏ（％）≦７０・・・・・・・・・・（１） △Ｓ（％）≦５・・・・・・・・・・（２） 〔Ｓｏ（％）は製造直後の繊維を温度１７０℃で１５分
間乾熱処理したときの収縮率であり，△Ｓ（％）は製造
直後の繊維を温度４０℃で５週間放置後，温度１７０℃
で１５分間乾熱処理したときの収縮率と前記収縮率Ｓｏ
（％）との差である。〕(1) The fibers A and B are composed of a highly shrinkable polyester fiber A having a shrinkage rate expressed by the following formulas (1) and (2), and a polyamide fiber B having a single filament fineness of 2 denier or less. A method for producing a fiber-mixed nonwoven fabric, which comprises subjecting a fiber-mixed web in which polyamide-based fibers C containing a polyamide-based polymer having a melting point lower than the melting point of each polymer as an adhesive component to heat shrinkage treatment. 25≦So(%)≦70・・・・・・・・・・・・(1) △S(%)≦5・・・・・・・・・・・・(2) [So(%) is the value immediately after production. This is the shrinkage rate when the fiber is subjected to dry heat treatment at 170°C for 15 minutes, and ΔS (%) is the shrinkage rate when the fiber is left at 40°C for 5 weeks immediately after production, and then the shrinkage rate is 170°C.
The shrinkage rate when dry heat treated for 15 minutes and the shrinkage rate So
(%) ]
／テレフタル酸以外のジカルボン酸のモル比が９６／４
〜８８／１２の酸成分とエチレングリコール成分とから
なる共重合ポリエステル系繊維である請求項１記載の繊
維混合不織布の製造方法。(2) The high shrinkage polyester fiber A has a molar ratio of terephthalic acid/dicarboxylic acid other than terephthalic acid of 96/4.
2. The method for producing a fiber-mixed nonwoven fabric according to claim 1, wherein the fiber-mixed nonwoven fabric is a copolyester fiber comprising an acid component of 88/12 and an ethylene glycol component.
コール／エチレングリコール以外のジオールのモル比が
９６／４〜８８／１２のジオール成分とテレフタル酸成
分とからなる共重合ポリエステル系繊維である請求項１
記載の繊維混合不織布の製造方法。(3) A claim in which the highly shrinkable polyester fiber A is a copolymerized polyester fiber consisting of a diol component and a terephthalic acid component with a molar ratio of ethylene glycol/diol other than ethylene glycol of 96/4 to 88/12. 1
The method for producing the fiber-mixed nonwoven fabric described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31343090A JP2994027B2 (en) | 1990-11-19 | 1990-11-19 | Manufacturing method of fiber mixed nonwoven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31343090A JP2994027B2 (en) | 1990-11-19 | 1990-11-19 | Manufacturing method of fiber mixed nonwoven fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04185753A true JPH04185753A (en) | 1992-07-02 |
| JP2994027B2 JP2994027B2 (en) | 1999-12-27 |
Family
ID=18041205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31343090A Expired - Lifetime JP2994027B2 (en) | 1990-11-19 | 1990-11-19 | Manufacturing method of fiber mixed nonwoven fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2994027B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998024959A1 (en) * | 1996-12-05 | 1998-06-11 | Texon Uk Limited | A repair fabric |
| GB2333783A (en) * | 1996-12-05 | 1999-08-04 | Texon Uk Ltd | A repair fabric |
-
1990
- 1990-11-19 JP JP31343090A patent/JP2994027B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998024959A1 (en) * | 1996-12-05 | 1998-06-11 | Texon Uk Limited | A repair fabric |
| GB2333783A (en) * | 1996-12-05 | 1999-08-04 | Texon Uk Ltd | A repair fabric |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2994027B2 (en) | 1999-12-27 |
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