JPH03819A - Polyester staple fiber - Google Patents
Polyester staple fiberInfo
- Publication number
- JPH03819A JPH03819A JP13451589A JP13451589A JPH03819A JP H03819 A JPH03819 A JP H03819A JP 13451589 A JP13451589 A JP 13451589A JP 13451589 A JP13451589 A JP 13451589A JP H03819 A JPH03819 A JP H03819A
- Authority
- JP
- Japan
- Prior art keywords
- denier
- fibers
- fiber
- staple fibers
- polyester
- 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.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 246
- 229920000728 polyester Polymers 0.000 title claims abstract description 54
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 238000009987 spinning Methods 0.000 claims abstract description 17
- 238000009826 distribution Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 abstract description 18
- 239000000203 mixture Substances 0.000 abstract description 3
- 206010016322 Feeling abnormal Diseases 0.000 abstract 1
- 238000000034 method Methods 0.000 description 30
- 230000000694 effects Effects 0.000 description 12
- 229920000742 Cotton Polymers 0.000 description 8
- 238000009960 carding Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 239000000470 constituent Substances 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 241001289717 Hypolimnas Species 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明はポリエステル100%紡績糸又は他の繊維と混
用する混紡糸に用いるポリエステル短繊維に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to short polyester fibers used in 100% polyester spun yarns or blended yarns mixed with other fibers.
[従来の技術] ポリエステル短繊維を使用して混紡糸となし。[Conventional technology] Blended yarn and none using polyester short fibers.
該紡績糸を用いた布帛は、ふくらみに欠け、ソフト感が
なく、いわゆるベーパーライクな風合を有するものとし
て長年問題となっていた。このベーパーライクな風合は
、該ポリエステル短繊維と池の繊維とを混紡して得られ
る混紡糸の場合にも問題であり、高級品位の布帛を得る
ことができなかった。Fabrics using such spun yarns lack fullness, lack a soft feel, and have a so-called vapor-like texture, which has been a problem for many years. This vapor-like texture is also a problem in the case of blended yarns obtained by blending the polyester staple fibers with pond fibers, making it impossible to obtain high-quality fabrics.
この欠点をカバーするために、ポリエステル短繊維に細
デニールのものを使用する試みがなされている。細デニ
ールのポリエステル短1a維を用いた布帛は、たしかに
、ソフトな風合になるものの。In order to overcome this drawback, attempts have been made to use short polyester fibers with a fine denier. Although fabrics made from fine denier short 1A polyester fibers do have a soft feel.
反面、ふくらみに欠け、さらに布帛の要求特性として重
要な反発性に欠ける等の新たな問題が出ている。さらに
、aデニールのポリエステル短繊維であって、特にその
単糸デニールが、 1.ode以下のポリエステル短繊
維では開繊工程であるカード工程において、ネップやム
ラが発生し、このため。On the other hand, new problems have arisen, such as a lack of fullness and a lack of resilience, which is an important characteristic required for fabrics. Furthermore, polyester short fibers having a denier, especially the single yarn denier: 1. Polyester short fibers with a diameter of less than 10 oz. or less will cause neps and unevenness in the carding process, which is the opening process.
カード工程のドツファ−回転数を低下せしめる等の対策
をとっても充分でなく、生産性が著しく低下し、実用の
工程では使用することができない欠点がある。Even if measures such as lowering the number of rotations of the docker in the carding process are taken, it is not sufficient and the productivity is significantly reduced, resulting in the disadvantage that it cannot be used in a practical process.
ポリエステル短繊維を用いた布帛の風合を改良するため
の他の方法として、デニールを変えることなくカット長
のみを変化させる異カット長混紡の試みもなされている
( B P 24198号公報)が。As another method for improving the feel of fabrics using polyester short fibers, attempts have been made to blend different cut lengths by changing only the cut length without changing the denier (BP 24198).
この方法では布帛のふくらみがやや改善されるもののソ
フト感に欠け、さらには紡績系の構成本数を変えずにカ
ット長のみが短くなるので紡績糸強力が低下するという
欠点がある。Although this method slightly improves the fluffiness of the fabric, it lacks a soft feel, and furthermore, only the cut length is shortened without changing the number of fibers in the spinning system, resulting in a decrease in the strength of the spun yarn.
又、さらに進んだ方法として長カット長の太デニール繊
維と短カット長の細デニール繊維を紡績工程で混紡する
方法が提案されている。(特開昭59−26537号公
報)この方法では前述の方法に比べて改良されているが
、紡績糸の均斉度、風合の点で不充分であり、生産性が
低下するという欠点は解決されていなかった。Furthermore, as a more advanced method, a method has been proposed in which long-cut length thick denier fibers and short-cut length fine denier fibers are blended in the spinning process. (Japanese Unexamined Patent Publication No. 59-26537) Although this method is improved compared to the above-mentioned method, it is insufficient in terms of uniformity and texture of the spun yarn, and the drawbacks of reduced productivity can be solved. It had not been done.
これは構成繊維として細デニール繊維を使っている上、
繊維間のデニール差が大きく通常の紡績工程における混
合方法、即ち打綿工程か線条工程において混合する方法
では繊維間のなじみが不良になるためと考えられる。This uses fine denier fibers as its constituent fibers, and
This is thought to be because the difference in denier between the fibers is large and the mixing method used in the normal spinning process, that is, the method of mixing in the batting process or the filament process, results in poor compatibility between the fibers.
[発明の目的〕
本発明は、従来のかかる間層点を解決し1通常の紡績工
程で高い生産性を維持しながら均一に混紡でき、従来得
ることができなかった。ふくらみとソフトな風合を有す
る布帛の製造を可能とするポリエステル短繊維を提供す
ることを目的とする。[Object of the Invention] The present invention solves the conventional interlayer point and enables uniform blending while maintaining high productivity in a normal spinning process, which has not been possible in the past. The purpose of the present invention is to provide short polyester fibers that enable the production of fabrics that have fullness and soft texture.
[発明の構成]
一本発明はポリエステル短繊維の製造工程から紡績工程
に移送する梱包ベール内において繊度差を有する2種以
上のポリエステル短繊維が混綿されており、太デニール
の短繊維が連続的に変化するm雑兵分布を有し、かつ該
太デニール短繊維と細デニールの短1m鱈が下記式を満
足することを特徴とするポリエステル短繊維にある。[Structure of the Invention] One aspect of the present invention is that two or more types of polyester staple fibers having different finenesses are blended in the packaging bale that is transferred from the polyester staple fiber manufacturing process to the spinning process, and the thick denier staple fibers are continuous. The polyester staple fiber is characterized in that it has a m-sized distribution that changes as follows, and that the thick denier staple fiber and the fine denier 1 meter short cod satisfy the following formula.
4.50≧DI /D2≧1.25
1.8≧D1≧1.0
1.0>D2≧0.4
65≧M1≧5
95≧M2≧35
16、ID i上26≧Li
≧10.2D I + 10
・・・・・・(1)
・・・・・(2
・・・・・・(a
・・・・・・(4)
・・・・・・(5)
(i=1. 2)
44≧L1 ≧1.13L2
但し デニール短繊維の平均繊維長
D1 :太デニール短繊維の繊度
D2二細デニール短繊維の繊度
Ml :太デニール短繊維の混率
Ml :細デニール短繊維の混率
・・・・・・(a
・・・・・(7)
ノ」 )
de)
da)
wt%)
wt%)
Ll ;太デニールポリエステル短繊維の平均繊維長(
間)
■、2:4[Bデニールポリエステル短繊維の平均繊維
長(luI)
本発明でいうポリエステルとは、ポリエチレンテレフタ
レートが好適であるが、その酸成分及び/又はジオール
成分の一部がイソフタル酸、5−ナトリウムスルホイソ
フタル酸等のジカルボン酸。4.50≧DI /D2≧1.25 1.8≧D1≧1.0 1.0>D2≧0.4 65≧M1≧5 95≧M2≧35 16, ID i upper 26≧Li ≧10. 2D I + 10 (1) (2) (a) (4) (5) (i=1 2) 44≧L1 ≧1.13L2 However, Average fiber length of denier short fibers D1: Fineness of thick denier short fibers D2 Fineness of double denier short fibers Ml: Mixing ratio of thick denier short fibers Ml: Mixing ratio of fine denier short fibers・・・・・・(a ・・・・・・(7) ノ」 ) de) da) wt%) wt%) Ll ; Average fiber length of thick denier polyester short fibers (
2:4 [Average fiber length (luI) of B denier polyester short fibers The polyester in the present invention is preferably polyethylene terephthalate, but some of its acid components and/or diol components are isophthalic acid. , dicarboxylic acids such as 5-sodium sulfoisophthalic acid.
ジエチレングリコール、1,4−ブタンジオール。Diethylene glycol, 1,4-butanediol.
ポリエチレングリコール等のジオールによって置換され
た共重合ポリエステルでもよい、これらポリエステルに
は艶消し剤、蛍光増白剤、帯電防止剤、防炎剤等が添加
されていてもよい。Copolymerized polyesters substituted with diols such as polyethylene glycol may also be used. Matting agents, optical brighteners, antistatic agents, flame retardants, etc. may be added to these polyesters.
本発明でいう紡績糸とはカード工程を通過して製造され
る糸である。The spun yarn as used in the present invention is a yarn manufactured through a carding process.
本発明では、ポリエステル短#a維の1つに単糸デニー
ルD2が1.0>D2≧0.4の範囲の細デニールのも
のを使用することが重要である。単糸デニールD2の範
囲は0.8≧D2≧0.4がより好ましい範囲であるが
、いずれにしてもソフトな風合の糸とするために細デニ
ールのものを使用しなければならない、単糸デニールD
2が0.4未満のものを゛使用すると、カード工程の通
過性が低下するため好ましくない。In the present invention, it is important to use one of the short polyester #a fibers having a fine denier in which the single yarn denier D2 is in the range of 1.0>D2≧0.4. A more preferable range of single yarn denier D2 is 0.8≧D2≧0.4, but in any case, in order to obtain a yarn with a soft texture, a fine denier must be used. Thread denier D
If 2 is less than 0.4, it is not preferable because the passability in the carding process will be lowered.
次に1本発明において細デニール使用の混紡糸が有して
いた欠点を解消するため、該ポリエステル短繊維の1つ
として、単糸デニールD1が1.8≧D1≧1.0範囲
にある太デニールのものを使用する。DIがL 8de
を超えると風合ががさつき、逆に1.Ode未溝では紡
績工程での生産性の低下を防止する効果が得られないの
で好ましくない。Next, in order to eliminate the drawbacks of the blended yarn using a fine denier in the present invention, one of the short polyester fibers is a thick yarn having a single yarn denier D1 in the range of 1.8≧D1≧1.0. Use denier ones. DI is L 8de
If it exceeds 1., the texture will become rough. Ode grooves are not preferable because they do not have the effect of preventing productivity from decreasing in the spinning process.
また、DlとDlの比も重要であってDl /D2が4
.5を超えると、太デニール短繊維と細デニール短繊維
のなじみが悪くなり、紡績糸内での均一な混繊状態が得
られなくなる。逆にDI /D2が1.25未満になる
と両者のデニールが近接しすぎて。Also, the ratio between Dl and Dl is important, and Dl/D2 is 4
.. If it exceeds 5, the compatibility between the thick denier short fibers and the fine denier short fibers will deteriorate, making it impossible to obtain a uniform mixed fiber state within the spun yarn. Conversely, if DI/D2 is less than 1.25, the deniers of both are too close.
前述の細デニールと太デニールの混用の目的が達成され
なくなる。従って、該太デニール短繊維と細デニール短
繊維のデニールDi 、Dlは前記(1)式を満足する
ことが必要である。The purpose of mixing fine denier and thick denier as described above will not be achieved. Therefore, it is necessary that the deniers Di and Dl of the thick denier staple fibers and the fine denier staple fibers satisfy the above formula (1).
さらに太デニール1m鱈と細デニール繊維の混合比率も
重要であって、太デニール短AaIl鱈の混率Ml
(重量%)は、混綿効果を有効に発揮するために65≧
M1≧5の範囲にする必要があり、更に好ましいのは4
0≧M1≧10の範囲である。太デニール短繊維の混率
が5重量%未満の場合には最終製品の布帛のふくらみ1
反発性が充分得られない。Furthermore, the mixing ratio of thick denier 1m cod and fine denier fibers is also important;
(weight%) is 65≧ in order to effectively exhibit the cotton blending effect.
It is necessary to keep M1≧5, and more preferably 4
The range is 0≧M1≧10. If the blending ratio of thick denier staple fibers is less than 5% by weight, the bulge of the final product fabric1
Not enough repulsion.
また、太デニール短繊維の混率が65重量%を超えると
、結果として細デニール短繊維の混率が低下し、布帛が
ソフ1〜にならず本発明の目的を達成することができな
い。Furthermore, if the blending ratio of thick denier staple fibers exceeds 65% by weight, the blending ratio of fine denier staple fibers will decrease as a result, and the fabric will not be soft to 1 or higher, making it impossible to achieve the object of the present invention.
このような低混率の太デニールの短繊維は単糸デニール
D2が前記の範囲にあるような細デニールの短繊維と通
常の紡績工程で混合すると、独自の挙動をし易く、均一
に混合されず、糸ムラの原因となり易い、かかる現象の
原因が何かは、はっきりとはしないが、その原因の1つ
として、41デニールD2の範囲が前記のような場合に
は、該細デニール繊維の表面積が著しく増加し、繊維相
互の摩擦が大となり、その結果、細デニール繊維と太デ
ニール繊維のなじみが不良になるためと考えられる。こ
のような現象による欠点を克服するなめにはポリエステ
ル短繊維の製造工程から紡績工程に移送する梱包ベール
内においてすでに2種以上のポリエステル短繊維が混綿
された状態であること、好ましくは実質的に均一に混綿
されていることが効果的である。When such thick denier short fibers with a low blending ratio are mixed with fine denier short fibers whose single yarn denier D2 is within the above range in a normal spinning process, they tend to behave in a unique manner and are not mixed uniformly. Although it is not clear what causes this phenomenon that tends to cause yarn unevenness, one of the causes is that when the range of 41 denier D2 is as described above, the surface area of the fine denier fiber It is thought that this is because the friction between the fibers increases significantly, and as a result, the compatibility between the fine denier fiber and the thick denier fiber becomes poor. In order to overcome the drawbacks caused by this phenomenon, two or more types of polyester staple fibers should already be mixed together in the packaging bale that is transferred from the polyester staple fiber manufacturing process to the spinning process, preferably in a substantially mixed state. It is effective if the cotton is mixed uniformly.
ポリエステル短繊維の一般的な製造方法としては、紡糸
工程において溶融ポリマーを紡糸口金のノズルより吐出
して紡糸し、原糸サブトウとして収缶する0次に延伸工
程においては原糸クリールで上記サブトウを多数束すて
原糸トウとし、これを加熱上延伸した後、緊張熱セット
、捲縮付与弛緩熱処理の工程を経て、所定の繊維長にカ
ットし、ベールに梱包する。これらの工程内において異
デニール・異カット長のポリエステル短繊維を均一に混
繊する方法としては1例えば第1図に示すように特殊な
装置を採用する。即ち、別々に延伸−捲縮付専一熱セッ
トした太デニール繊維からなるトウY1と細デニール繊
維からなるトウY2をテンションバーTI 、T2で高
い張力を掛けた状態でガイドローラーGl 、G2を経
て別々のカッターCI 、C2に供給して別々の繊維長
となる様に切断し、切断されて自重で落下中の繊維S1
゜S2をカッター下に設けられた圧空ノズルN1N2を
使って圧空で吹き飛ばし、シュート1内で開繊、混合し
ローラー4で駆動されたコンベア2上に落下させる方法
によって得られる。なお、3は圧空排出口である。高い
張力でカッターにトウを供給することによりトウが開繊
し易くなり太デニール繊[31と細デニール繊維S2と
をより均一に混合することができる。A general method for producing polyester short fibers is that in the spinning process, the molten polymer is spun through a nozzle of a spinneret, and the subtow is collected as a raw yarn subtow.In the second drawing process, the subtow is collected using a yarn creel. A large number of bundles are discarded to form a raw yarn tow, which is heated and stretched, then subjected to tension heat setting, crimping and relaxation heat treatment processes, cut to a predetermined fiber length, and packed into bales. As a method for uniformly mixing polyester staple fibers of different deniers and different cut lengths in these steps, a special device, for example, as shown in FIG. 1, is employed. That is, a tow Y1 made of thick denier fibers and a tow Y2 made of thin denier fibers, which have been separately drawn and crimped and heat-set, are passed through guide rollers GI and G2 under high tension with a tension bar TI and T2. The fibers S1 are fed to separate cutters CI and C2 and cut into different fiber lengths, and the cut fibers S1 are falling under their own weight.
It is obtained by blowing away S2 with compressed air using a compressed air nozzle N1N2 provided under the cutter, opening and mixing it in a chute 1, and dropping it onto a conveyor 2 driven by a roller 4. Note that 3 is a compressed air outlet. By supplying the tow to the cutter with high tension, the tow can be easily opened, and the thick denier fiber [31] and the fine denier fiber S2 can be mixed more uniformly.
特に開繊しにくい細デニール繊維S2はカット後、チッ
プ状となって落下するが、w4方向から圧空ノズルN2
により強く圧空を吹き付けられることにより容易に開繊
する。The fine denier fiber S2, which is particularly difficult to open, falls in the form of chips after being cut, but the compressed air nozzle N2
The fibers are easily opened by being blown with stronger compressed air.
これに対し9通常の紡績工程では、太デニール繊維S1
と細デニール11維S2とを混合して開繊しようとする
ため太デニール繊維S1はより開繊し易く、これに反し
て細デニール11維S2は前述太デニール短繊維の捲縮
数は9〜15個/inが好ましく、11〜14個/in
がさら好ましい、捲縮数か9未満では繊維間のからみが
低下し、紡績のカード工程の通過性が低下するので好ま
しくない。逆に171m数が15を超えると繊維同士の
からみが強くなり過ぎて開繊しにくくなり、細デニール
短繊維と均一混合しなくなるので好ましくない。On the other hand, in the normal spinning process, thick denier fiber S1
Since the thick denier fibers S1 are mixed with the fine denier 11 fibers S2 to be opened, the thick denier fibers S1 are easier to open.On the other hand, the fine denier 11 fibers S2 have a number of crimps of 9 to 9. 15 pieces/in is preferable, 11 to 14 pieces/in
is more preferable, but if the number of crimp is less than 9, the entanglement between the fibers decreases and the passability of the spinning carding process decreases, which is not preferable. On the other hand, if the number of 171 m exceeds 15, the entanglement between the fibers becomes too strong, making it difficult to open the fibers, and the fibers will not be uniformly mixed with the fine denier short fibers, which is not preferable.
又、細デニール短繊維の捲縮数は11〜17(ll]/
inが好ましく、13〜15個/inがさらに好ましい
、捲縮数か11未満では繊維間のからみが低下し、紡績
のカード工程の通過性が低下するので好ましくない、逆
に捲縮数か15を超えると繊維同士のからみが強くなり
過ぎて開繊しにくくなり1太デニ一ル短4m雌と均一混
合しなくなるので好ましくない。In addition, the number of crimps of the fine denier short fibers is 11 to 17 (ll)/
In is preferable, and 13 to 15 crimps/in is more preferable. If the number of crimps is less than 11, the entanglement between the fibers decreases and the passability of the carding process of spinning is decreased, so it is not preferable. On the contrary, if the number of crimps is less than 15 Exceeding this is not preferable because the entanglement between the fibers becomes too strong and it becomes difficult to spread the fibers, making it impossible to mix uniformly with the 1-thick denier and 4-m short female fibers.
コンベア2上の混合繊維は梱包機に移送され。The mixed fibers on the conveyor 2 are transferred to a packing machine.
梱包ベールとして圧縮梱包される。梱包ベール中の均一
混合の尺度として100gの綿塊を第2図の丸印で示す
角の部分5〜12からサンプリングし部分別にフラット
カードにかけてスライバーを作成し、最初のスライバー
と最後のスライバーについて、それらのスライバー中の
1つの断面の顕微鏡写真からデニー、ル別の構成繊維本
数比率を求める0本発明のポリエステル短繊維はベール
の5〜12の各部分から得られたサンプルのいずれの中
にもすべての構成繊維が含まれていることが好ましい、
特に5〜12の各部分から得られたサンプルのデニール
別の構成本数比率について、8つの部分の平均値と各部
分それぞれの値の差が平均値の30%以内であることが
好ましい。It is compressed and packed as a packing bale. As a measure of uniform mixing in the packing bale, 100 g of cotton mass was sampled from corner sections 5 to 12 indicated by circles in Figure 2, and each section was flat carded to create slivers, and for the first sliver and the last sliver, Calculate the ratio of the number of constituent fibers for each sliver from a microscopic photograph of one cross section in those slivers. Preferably, all constituent fibers are included.
In particular, regarding the composition number ratio by denier of the samples obtained from each section of 5 to 12, it is preferable that the difference between the average value of the 8 sections and the value of each section is within 30% of the average value.
次に1本発明に使用するポリエステル短繊維の繊維長に
ついて詳述する。細デニールのポリエステル短繊維は、
従来からカード工程の通過性が不良であり、ネップやム
ラを発生させ易く、かかるネップやムラを減少させるに
は、その平均繊維長L2(m)をデニールに応じて短く
してやればよい8例えばC2=0.4deであれば、平
均#a維雑兵2は、 32.4≧L2≧14.08の間
のものが使用される。これと混合する太デニールのポリ
エステル短繊維もデニールに応じた平均繊維長のものを
使用するのがよい。Next, the fiber length of the short polyester fibers used in the present invention will be explained in detail. Fine denier polyester short fibers are
Conventionally, the carding process has poor passability and tends to cause neps and unevenness.In order to reduce such neps and unevenness, the average fiber length L2 (m) should be shortened according to the denier.8For example, C2 = 0.4de, the average #a cloth soldier 2 that satisfies the following is used: 32.4≧L2≧14.08. It is also preferable to use thick denier short polyester fibers to be mixed with this, having an average fiber length corresponding to the denier.
さらに糺デニール短A11ll維の平均繊維長L2を短
くすれば、前述のように、ネップやムラを減少させ得る
か、逆に、平均m雌具が短くなれば混紡糸中において該
細デニール短繊維の繊維配列を大とすることかできず、
混紡糸の光沢を著しく低下させるという問題がある。と
ころか、太デニール短繊維として平均繊維長L1が大で
あるものを使用すると、該細デニール短繊維の混紡糸中
における配列が向上するためと思われる混紡糸の光沢が
向上する。このような作用・効果を得るためには。Furthermore, if the average fiber length L2 of the short denier A11ll fibers is shortened, neps and unevenness can be reduced as described above, or conversely, if the average length of the short denier fibers is shortened, the fine denier staple fibers in the blended yarn can be reduced. It is not possible to increase the fiber arrangement of
There is a problem in that the gloss of the blended yarn is significantly reduced. On the other hand, when thick denier short fibers having a large average fiber length L1 are used, the gloss of the blended yarn is improved, which is thought to be due to the improved arrangement of the fine denier short fibers in the blended yarn. In order to obtain such effects and effects.
ポリエステル短繊維の平均!i長L1.L2が(6)式
、(7)式を満足している必要がある。Average of polyester short fibers! i length L1. L2 must satisfy equations (6) and (7).
さらに1本発明のポリエステル短繊維の紡績におけるカ
ード通過性と糸ムラを改良するためにはポリエステル短
繊維の繊維長を一定の範囲内で連続的に変化させること
(バイアスカット)が有効である。Furthermore, in order to improve the card passability and yarn unevenness in spinning the polyester short fibers of the present invention, it is effective to continuously change the fiber length of the polyester short fibers within a certain range (bias cutting).
即ち、糸ムラについては、従来より羊毛との混紡のよう
に繊維長が、長い場合には紡績糸の糸ムラを改良するた
め、使用するポリエステル短繊維をバイヤスカットにす
ることが行われており、充分な効果を上げていることは
周知の適っである。In other words, in order to improve yarn unevenness in spun yarns when the fiber length is long, such as when blended with wool, the polyester staple fibers used have traditionally been bias-cut. It is well known that this method is highly effective.
しかしながら1本発明に用いるような細デニールの短繊
維では、前記の理由によりその繊維長をより短くしなけ
ればならず1wA維長雑兵い場合には単にバイヤスカッ
トの短繊維を用いただけではバイヤスの効果が現れず、
糸ムラの向上は得られなかった。しかるに1本発明のよ
うに、 +6)、 +71式を満足する関係を有し、且
つ、(1)式を満足する太デニール繊維と細デニール繊
維とを組み合わせるという条件で、該ポリエステル短繊
維をバイヤスカットとすることによって、驚くべきこと
にカード通過性と糸ムラの大幅な向上が得られるのであ
る。However, in the case of short fibers with a fine denier as used in the present invention, the fiber length must be made shorter for the reasons mentioned above, and in the case of a 1wA fiber length, simply using bias-cut short fibers will result in a bias cut. No effect,
No improvement in yarn unevenness was obtained. However, as in the present invention, the short polyester fibers are biased on the condition that they have a relationship that satisfies formulas +6) and +71, and are combined with thick denier fibers and fine denier fibers that satisfy formula (1). Surprisingly, by cutting, card passing performance and yarn unevenness can be significantly improved.
この理由としては、前述の通り細デニールのポリエステ
ル短繊維のみではカード通過性が低下するので1本発明
では太デニールのポリエステル短繊維を混綿することに
よって該太デニール繊維で細デニール繊維を支えるよう
な形態でカード通過性を向上させているが、この効果を
更に発揮させるためには太デニール短l/M維と細デニ
ール短繊維の間のなじみをよくすることが重要であって
、バイヤスカットにすることにより平均繊維長はそれぞ
れのデニールに応じた値を取りながらより近接した繊維
長の繊維を介在させることにより双方の繊維の間のなじ
みを向上させ、カード通過時の太デニール繊維の細デニ
ール短繊維を支える効果を増大させているものと考えら
れる。The reason for this is that, as mentioned above, if only fine denier short polyester fibers are used, the card passability will be reduced, so in the present invention, by blending thick denier short polyester fibers, the thick denier fibers can support the fine denier fibers. The shape improves the card passing property, but in order to further demonstrate this effect, it is important to improve the compatibility between the thick denier short L/M fibers and the fine denier short fibers. By doing this, the average fiber length takes a value according to each denier, and by interposing fibers with closer fiber lengths, the familiarity between both fibers is improved, and the thick denier fiber becomes thinner when passing through the card. It is thought that this increases the effect of supporting short fibers.
この効果は太デニール短繊維をバイヤスカットにするこ
とだけでも相当の程度で得られる。更に。This effect can be obtained to a considerable extent simply by bias-cutting thick denier staple fibers. Furthermore.
第3図に示す様に太デニール短繊維13と細デニール短
繊維14の両者ともバイヤスカッとし、15の部分に示
すように双方の1mm兵長布を重複あるいは少なくとも
連続させることによってさらに増大する。カード通過性
に対する繊維長分布の影響を見ると、!61.を力式を
満足する条件下において、太デニール短繊維と細デニー
ル短繊維の双方がスクエアカットの場合に比べて、太デ
ニール短繊維をバイアスカットにしてその最短繊維長を
細デニール短繊維(スクエアカット)の繊維長に合わせ
た場合の方が良好となり、双方をバイアスカットにして
太デニール短繊維の最短繊維長を細デニール短繊維の最
長繊維長に合わせると更によくなる。最もよいのは、双
方をバイヤスカットにして太デニール短繊維の最短繊維
長を細デニール繊維の最長繊維長より短くする。即ち、
繊維長分布に重なりを持たせたものであって、この場合
には繊維長分布が重複した部分の1m鱈が太長い繊維と
細短い繊維の間に介在することによって、カード通過時
の太デニール短繊維の細デニール短繊維を支える効果を
増大させているものと考えられる。As shown in FIG. 3, both the thick denier short fibers 13 and the fine denier short fibers 14 have a bias-like structure, which is further increased by overlapping or at least making them continuous as shown in the section 15. Looking at the influence of fiber length distribution on card passability! 61. Under conditions that satisfy the force formula, compared to the case where both the thick denier staple fiber and the fine denier staple fiber are square cut, the thick denier staple fiber is bias-cut and its shortest fiber length is reduced to the fine denier staple fiber (square cut). It is better when the fiber length is adjusted to match the fiber length of the cut), and it is even better when both are bias cut and the shortest fiber length of the thick denier staple fiber is adjusted to the longest fiber length of the fine denier staple fiber. The best way is to bias-cut both of the fibers so that the shortest fiber length of the thick denier short fibers is shorter than the longest fiber length of the fine denier fibers. That is,
The fiber length distribution overlaps, and in this case, the 1m cod in the overlapped fiber length distribution is interposed between the thick and long fibers and the thin and short fibers, resulting in a thick denier when passing through the card. It is thought that this increases the effect of supporting the fine denier short fibers.
この繊維長分布の重複の度合については、双方の繊維長
分布の1/3以下が適当であって、それ以上1例えば細
デニール短繊維の繊維長を長くするとカードの通過性が
不良となると共に糸ムラが発生しやすくなり、太デニー
ル短繊維の繊維長を短くするとカード通過性は向上する
が紡績糸強力が低下するという問題が生じる。Regarding the degree of overlapping of the fiber length distributions, it is appropriate to set the fiber length distribution to 1/3 or less of both fiber length distributions.If the fiber length of fine denier short fibers is made longer than that, for example, the card passability becomes poor and Yarn unevenness is more likely to occur, and if the fiber length of the thick denier short fibers is shortened, the card passability improves, but the strength of the spun yarn decreases.
従って、太デニール短繊維及び細デニール短繊維のI&
長及び最短繊維長は、(8)式を満足していることが好
ましい。Therefore, the I&
It is preferable that the length and the shortest fiber length satisfy formula (8).
なお1本発明では前記の太デニール繊維と細デニールm
鱈の2種類があれば所期の効果が得られるが1本発明の
範囲内であれば、さらに中間デニールの繊維を混合して
も差し支えない。Note that in the present invention, the above-mentioned thick denier fiber and fine denier m
The desired effect can be obtained if two types of cod are used, but within the scope of the present invention, fibers of intermediate denier may also be mixed.
[発明、の効果]
このように本発明のポリエステル短繊維は、柑デニール
の短繊維を用いる際の欠点を克服するため、(1)〜(
7)式を満足する太デニール短繊維と細デニール短繊維
とをポリエステル短繊維の梱包前に混合することにより
、従来技術では得られなかった。紡績性と紡績糸品位の
向上、最終製品のべ編物のソフト感・ドレープ性と反発
性の両立を達成することができる。[Effects of the Invention] As described above, the polyester short fiber of the present invention has the following properties (1) to (
7) By mixing thick denier staple fibers and fine denier staple fibers that satisfy formula 7) before packaging the polyester staple fibers, this could not be obtained with the prior art. It is possible to improve spinnability and spun yarn quality, and achieve both softness, drapability, and resilience of the final knitted product.
即ち1本発明によれば、従来の細デニール短繊維を用い
る場合の紡績上の問題であったカード通過性の悪化によ
るネップやムラの発生に対して。That is, according to the present invention, the occurrence of neps and unevenness due to deterioration of card passageability, which was a problem in spinning when conventional fine denier staple fibers are used, can be avoided.
(1)〜(31式を満足する太デニールと細デニールの
混用並びに(a〜(7)式を満足する平均atnt長で
少なくとも太デニール雉1m維をバイヤスカットとする
こと、更に好ましくは、8)式を満足するi1m雌長分
布のバイヤスカットとすることによって、太デニール短
繊維が細デニール短繊維を支える効果を高め。(1) to (mixing of thick denier and fine denier fibers that satisfy formulas 31 and (2) bias-cutting at least 1 m thick denier fiber with an average atnt length that satisfies formulas a to (7), more preferably 8 ) By making a bias cut with an i1m female length distribution that satisfies the formula, the effect of thick denier short fibers supporting fine denier short fibers is enhanced.
カード通過性を向上させることができた。We were able to improve card passing performance.
最終製品の織編物の性能については、細デニール短繊維
の使用によりソフト感・ドレープ性が得られることは勿
論であるが、(1)〜(31式を満足する太・細デニー
ル短繊維の混用により従来の細デニール短繊維紡績糸が
有していたふくらみ不足・反発性不良の欠点を解消する
ことができた。Regarding the performance of the woven or knitted fabric of the final product, it goes without saying that the use of fine denier staple fibers provides a soft feel and drapability, but the use of a mixture of thick and fine denier staple fibers that satisfies formulas (1) to (31) This made it possible to overcome the drawbacks of lack of fullness and poor resilience that conventional fine denier short fiber spun yarns had.
本発明のポリエステル短繊維は通常の紡績工程だけでな
く、不織布、詰め綿、立毛商品にも有効に適用できる。The polyester short fibers of the present invention can be effectively applied not only to ordinary spinning processes but also to nonwoven fabrics, stuffed cotton, and napped products.
次に実施例により本発明の詳細な説明する。Next, the present invention will be explained in detail with reference to Examples.
[実施例]
m 固有粘度が0.65のポリエチレンテレフタレー
トチップを300℃で溶融し、孔数が1200孔の口金
を通して温度285℃、吐出量135r/分及び506
g/分で吐出し、 1000m/分の速度で引き取り、
未延伸糸を得た。これを集束して40万デニールのトウ
となし、2.8倍の延伸を行い、温度200℃で緊張熱
処理した後、捲縮を付与し140℃の雰囲気中で弛緩熱
処理を行なって単繊維デニールが0.4de及び1.5
deの延伸トウを得た。[Example] m A polyethylene terephthalate chip with an intrinsic viscosity of 0.65 is melted at 300°C, and passed through a nozzle with 1200 holes at a temperature of 285°C, a discharge rate of 135 r/min, and a discharge rate of 506 m.
Discharge at g/min, take off at 1000m/min,
An undrawn yarn was obtained. This is bundled into a tow of 400,000 denier, stretched 2.8 times, subjected to tension heat treatment at a temperature of 200℃, then crimped and subjected to relaxation heat treatment in an atmosphere of 140℃ to obtain a single fiber denier. is 0.4 de and 1.5
A drawn tow of de was obtained.
これら延伸トウを第1図に示す装置で、単繊維デニール
が0.4deのものは25a+mのスクエアカット、
1.sdeのものは25〜38111のバイヤスカット
に切断し、混合繊維として200kgのベールに梱包し
た。該ポリエステル短繊維原綿を通常の打綿工程、カー
ド工程、線条工程を通し、英弐綿番手50Sの紡績糸を
得た。該紡績糸を経、緯に用いて、経糸144本/2.
54■、緯糸80本/2.54cmの密度で平織組織に
織成し9通常の仕上工程を経た織物として評価を行った
。結果を第1表に示す。These drawn tows are cut into square pieces of 25a+m using the equipment shown in Figure 1, and those with a single fiber denier of 0.4de are cut into square pieces of 25a+m.
1. The sde fibers were cut into bias cuts of 25 to 38111 and packed into 200 kg bales as mixed fibers. The polyester short fiber raw cotton was subjected to a conventional batting process, carding process, and filament process to obtain a spun yarn with a cotton count of 50S. Using the spun yarn for warp and weft, 144 warp yarns/2.
The fabric was woven into a plain weave structure with a density of 54 mm and 80 wefts/2.54 cm, and was evaluated as a woven fabric that had been subjected to 9 normal finishing steps. The results are shown in Table 1.
塞」E匿」Lユ」、吐出量を270t/分に変更した以
外は実施例1と同じ条件で溶融紡糸、延伸して得た単繊
維デニール0.8deの延伸トウ゛と実施例1で使用し
た0、 4de及び1.5deの延伸トウの3種を用い
て表−1に示すデニール・カット長の組合せでバイヤス
カットし、各々混合繊維として200 kgのベールに
梱包しな。Single fiber denier 0.8 de drawn tow obtained by melt spinning and drawing under the same conditions as in Example 1 except that the discharge rate was changed to 270 t/min. The three kinds of drawn tows used, 0, 4 de, and 1.5 de, were bias-cut using the combinations of denier and cut length shown in Table 1, and each was packaged into 200 kg bales as mixed fibers.
この際、2種のトウをカットする場合・には実施例1と
同じく第1図に示す装置で、3種のトウをカットする場
合には第1図に示す装置に更にもう1台のカッターを加
えて3者混合が可能な装置で種々の長さに切断した。At this time, if two types of tows are to be cut, the device shown in FIG. 1 is used as in Example 1, and if three types of tows are to be cut, an additional cutter is used in addition to the device shown in FIG. 1. was added and cut into various lengths using a device capable of three-way mixing.
該ポリエステル短繊維は実施例1と同様にして、英式綿
番手50Sの紡績糸となし、該紡績糸50Sを経、緯に
用いて、経糸144本/ 2.54cso 。The polyester short fibers were made into a spun yarn of English cotton count 50S in the same manner as in Example 1, and the spun yarn 50S was used for the warp and weft, and the warp yarns were 144 yarns/2.54 cso.
緯糸80本/2゜54czの密度で平織組織に織成し。Woven into a plain weave structure with a density of 80 wefts/2°54cz.
通常の仕上工程を経た織物として評価を行った。The evaluation was conducted as a fabric that had undergone a normal finishing process.
結果を第1表に併せて示す。The results are also shown in Table 1.
i土叢呈工亙 実施例1及び実施例2〜4と同様の条件
で吐出量のみ変更して溶融紡糸、延伸して得た単繊維デ
ニール0.8de 、 1.0de 、 1.7deの
3種の延伸l・つを表−1に示すデニール・カット長の
組合せでバイアスカットし、各々混合繊維として200
kgのベールに梱包した。i Soil production process Three single fibers with denier of 0.8 de, 1.0 de, and 1.7 de were obtained by melt spinning and drawing under the same conditions as Example 1 and Examples 2 to 4 with only the discharge amount changed. The stretched seeds were bias-cut using the combinations of denier and cut length shown in Table 1, and each was made into a mixed fiber with 200
Packed in kg bales.
該ポリエステル短繊維は実施例1及び実施例2〜4と同
様にして、英式綿番手308の紡績糸となし、該紡績糸
308を用いて、天笠(28ゲージ)を編成し1通常の
仕上工程を経てm物とし評価を行った。結果を第1表に
併せて示す6夏暫皿工二二 比較のため、ポリエステル
短繊維として、実施例と同じデニール構成でスクエアカ
ットしたものや、細デニール単独のものを用い、同様の
工程により紡績糸を得て、これによりlIi物及び編物
を職編成し、該織編物を評価した。その結果を第1表に
併せて示す。The polyester short fibers were made into a spun yarn of English cotton count 308 in the same manner as in Example 1 and Examples 2 to 4, and the spun yarn 308 was used to knit a tenagasa (28 gauge). After going through the process, it was made into an m-product and evaluated. The results are also shown in Table 1. 6 Natsashibara Sarako 22 For comparison, polyester short fibers with the same denier structure as in the example were used, such as square-cut fibers or fine denier fibers alone. A spun yarn was obtained, which was used to knit lIi and knitted fabrics, and the woven and knitted fabrics were evaluated. The results are also shown in Table 1.
尚、第1表において反発性の代用特性としたBS、BR
はBS=平均曲げ硬さ、BR=平均曲げ反発率を示す値
であり、 JIS L 10966,203、C法(ル
ープ圧縮法)により測定して求める6また、糸品質の棚
のU%、ネップは計測器工業■製にE780 B型糸ム
ラ試@機により測定し。In addition, in Table 1, BS and BR are used as substitute characteristics for repulsion.
is a value indicating BS = average bending hardness, BR = average bending repulsion rate, and is determined by measuring according to JIS L 10966, 203, C method (loop compression method) 6 In addition, U% of yarn quality shelf, NEP Measured using E780 B type yarn unevenness tester manufactured by Keizai Kogyo ■.
糸欠点は、シエルベガーウースター■製つ−スタークラ
シマット試験機により、16分類に分けて計測される糸
欠点の総数として示した。Yarn defects were expressed as the total number of yarn defects measured in 16 categories using a Schierbeger Worcester ■ Star Classimat tester.
第1表で明らかなように、実施例のように太デニール短
繊維をバイヤスカットにしたものは1同じデニール構成
でスクエアカットの比較例1と比較してカード通過性は
良好となる。As is clear from Table 1, when thick denier staple fibers are bias-cut as in the examples, the card passing property is better than that of Comparative Example 1, which has the same denier structure but is square-cut.
また、実施例4のように細デニール短繊維と太デニール
短繊維の双方をバイアスカットとして太デニール短繊維
の最短繊維長を細デニール短繊維の最長繊維長に合わせ
たものではカード通過性は更に向上する。実施例3のよ
うに、太デニール短繊維の最短繊維長を細デニール短繊
維の最長繊維長より短くするとカード通過性は尚向上す
る。なお、実施例2のように0.4deと1.5deに
その中間の繊度の0.8deの繊維を加えた場合、繊維
間のなじみが向上してカード通過性は更に向上する。In addition, when both the fine denier staple fibers and the thick denier staple fibers are bias cut as in Example 4, and the shortest fiber length of the thick denier staple fibers is matched to the longest fiber length of the fine denier staple fibers, the card passability is even worse. improves. As in Example 3, when the shortest fiber length of the thick denier staple fibers is made shorter than the longest fiber length of the fine denier staple fibers, the card passability is further improved. In addition, when 0.8 de fibers having a fineness intermediate between 0.4 de and 1.5 de are added as in Example 2, the familiarity between the fibers is improved and the card passage property is further improved.
上述のように実施例1〜4ではカード通過性は著しく改
善されているが、最終的な品質9m合いでも良好な結果
が得られている。さらに実施例1〜4で得た布帛は、そ
の理由は明瞭ではないが。As mentioned above, in Examples 1 to 4, the card passing property was significantly improved, but good results were obtained even at the final quality of 9m. Furthermore, the fabrics obtained in Examples 1 to 4 were different, although the reason for this is not clear.
織物表面の光沢が著しく改良され、高級織物としての品
位をもつものであった。The surface gloss of the fabric was significantly improved, giving it the quality of a high-quality fabric.
実施例5.6はms用としてm’s用より太いデニール
構成にしているが、これらでもカード通過性は良好であ
り、最終的な品質2m合いでも良好な結果が得られてい
る。Examples 5 and 6 have a thicker denier structure for ms than for m's, but the card passing property is good even with these, and good results are obtained even in the final quality of 2 m.
一方、比較例では、ポリエステル短繊維が細デニール単
独のもの(比較例2.4)では、カードの通過性が劣る
のは当然としても、ポリエステル短繊維の太デニールの
ものを混合させても、比較例3のように同じ繊維長のも
のを混合させたものや、比較例1.5のように繊維長を
変えてもスクエアカットのものでは細デニールと太デニ
ールの均一混合が回能であり、カードの通過性、糸品質
も不良である。On the other hand, in the comparative example, it is obvious that the card passability is poor when the short polyester fibers are used alone with a fine denier (Comparative Example 2.4), but even when the short polyester fibers with a thick denier are mixed, Even if the fiber length is mixed as in Comparative Example 3, or the fiber length is changed as in Comparative Example 1.5, the square-cut one can achieve uniform mixing of fine denier and thick denier. , card passability, and yarn quality are also poor.
第1図は本発明のポリエステル短繊維の切断。
混合工程の一例を示す断面図である。
第2図は本発明のポリエステル短#111iを梱包した
ベールにおいてサンプリング位置を示す斜視図である。
第3図は本発明のポリエステル短繊維のステープルダイ
アダラムの一例を示す図である。
特許出順人
帝
人
株
式
B
第2図
第3
図FIG. 1 shows cutting of the polyester staple fiber of the present invention. It is a sectional view showing an example of a mixing process. FIG. 2 is a perspective view showing sampling positions in a bale packed with polyester short #111i of the present invention. FIG. 3 is a diagram showing an example of a staple diadem of polyester staple fibers of the present invention. Patent issued by Teijin Stock B Figure 2 Figure 3
Claims (1)
送する梱包ベール内において繊度差を有する2種以上の
ポリエステル短繊維が混綿されており、太デニールの短
繊維が連続的に変化する繊維長分布を有し、かつ該太デ
ニール短繊維と細デニールの短繊維が下記式を満足する
ことを特徴とするポリエステル短繊維。 4.50≧D1/D2≧1.25・・・・・・(1) 1.8≧D1≧1.0・・・・・・(2) 1.0>D2≧0.4・・・・・・(3) 65≧M1≧5・・・・・・(4) 95≧M2≧35・・・・・・(5) 16.1Di+26≧Li≧10.2Di+10(i=
1、2)・・・・・・(6) 44≧L1≧1.13L2・・・・・・(7)但し D1:太デニール短繊維の繊度(de) D2:細デニール短繊維の繊度(de) M1:太デニール短繊維の混率(wt%) M2:細デニール短繊維の混率(wt%) L1:太デニールポリエステル短繊維の平 均繊維長(mm) L2:細デニールポリエステル短繊維の平 均繊維長(mm) (2)細デニール短繊維が連続的に変化する繊維長分布
を有すると共に太デニール短繊維の繊維長と細デニール
短繊維の繊維長のそれぞれの最大値及び最小値が下記式
を満足するものである請求項(1)のポリエステル短繊
維。 (L1max+2L1min)/3≧L2max≧L1
min≧(2L2max+L2min)/3 ・・・・・・(8) 但し L1max、L1min:太デニール短繊維の最長繊維
長(mm)、最短繊維長(mm) L2max、L2min:細デニール短繊維の最長繊維
長(mm)、最短繊維長(mm)[Claims] (1) Two or more types of polyester short fibers having different finenesses are mixed in the packaging bale that is transferred from the polyester short fiber manufacturing process to the spinning process, and the thick denier short fibers are continuous. 1. A polyester short fiber having a fiber length distribution that changes, and wherein the thick denier short fiber and the fine denier short fiber satisfy the following formula. 4.50≧D1/D2≧1.25 (1) 1.8≧D1≧1.0 (2) 1.0>D2≧0.4・・・(3) 65≧M1≧5・・・・・・(4) 95≧M2≧35・・・・・・(5) 16.1Di+26≧Li≧10.2Di+10(i=
1, 2)...(6) 44≧L1≧1.13L2...(7) However, D1: Fineness of thick denier short fibers (de) D2: Fineness of fine denier short fibers (de) de) M1: Mixing ratio of thick denier short fibers (wt%) M2: Mixing ratio of fine denier short fibers (wt%) L1: Average fiber length of thick denier short fibers (mm) L2: Average fiber of fine denier short fibers Length (mm) (2) The fine denier staple fiber has a fiber length distribution that changes continuously, and the maximum and minimum values of the fiber length of the thick denier staple fiber and the fiber length of the fine denier staple fiber are expressed by the following formula. The polyester staple fiber of claim (1) which is satisfactory. (L1max+2L1min)/3≧L2max≧L1
min≧(2L2max+L2min)/3 (8) However, L1max, L1min: Longest fiber length (mm), shortest fiber length (mm) of thick denier short fibers L2max, L2min: Longest fiber length of fine denier short fibers Length (mm), shortest fiber length (mm)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13451589A JPH03819A (en) | 1989-05-30 | 1989-05-30 | Polyester staple fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13451589A JPH03819A (en) | 1989-05-30 | 1989-05-30 | Polyester staple fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03819A true JPH03819A (en) | 1991-01-07 |
Family
ID=15130132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13451589A Pending JPH03819A (en) | 1989-05-30 | 1989-05-30 | Polyester staple fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03819A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992013120A1 (en) * | 1991-01-25 | 1992-08-06 | E.I. Du Pont De Nemours And Company | Improvements in polyester fibers |
-
1989
- 1989-05-30 JP JP13451589A patent/JPH03819A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992013120A1 (en) * | 1991-01-25 | 1992-08-06 | E.I. Du Pont De Nemours And Company | Improvements in polyester fibers |
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