JPS5921715A - Polyester type fiber capable of deepening color - Google Patents

Abstract

PURPOSE:The titled fibers, having specific discontinuous recesses on the surfaces thereof, with little embrittlement, and capable of not only reducing the specular reflection but also promoting the light absorption into the interiors thereof without requiring a special additive. CONSTITUTION:Polyester type fibers having 5-100, based on 10 square micrometers on the surfaces thereof, oblong discontinuous recesses (discontinuous crackings) in the fiber axial direction having 0.1-2mu, preferably 0.15-0.8mu, length, 0.01-0.4mu, preferably 0.02-0.3mu, width and 0.1-0.6mu depth, and capable of deepening the color thereof. The fibers are obtained by heating polyester type fibers in an alkaline aqueous solution, e.g NaOH, containing a carrier, and hydrolyzing the surfaces of the fibers.

Description

【発明の詳細な説明】 本発明は、深色化し得る、即ち発色性を改良されたポリ
エステル糸線ｆｄｌｉ　Ｋ関する。ポリエステル系繊維
は、そのすぐれた物性、イージーケア−性のため−広く
一般に使１ｆｌさＪｔでいるが、大きな欠点として難染
性や発色性不良が挙げられる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polyester thread fdli K which can be deep-colored, that is, has improved color development. Polyester fibers are widely used due to their excellent physical properties and easy care properties, but their major drawbacks include difficulty in dyeing and poor color development.

発色性不良、即ち羊毛、絹、アセフーートに比して鮮明
性、色の深みが劣ることは、ポリエステル系繊維の染色
が一般にｐｔ１′ψＪ（′１□に乏しい分散染料で行わ
れていること、ポリエステル系繊維の屈折率が１．７程
度と他の繊維に比べてきわめて高く、空気との屈折率差
が大で４１′Ｖ、＃（ｆｆ内部への入射光が少なくなる
こと、さらにポリエステル系繊維の製造が溶融紡糸法に
てなさｉするため表面がきわめてなめらかで）°０の浸
入を困φＩＦにしていること等に起因している。Poor color development, that is, poor clarity and depth of color compared to wool, silk, and acefoot, is due to the fact that polyester fibers are generally dyed with disperse dyes that are poor in pt1'ψJ ('1□). The refractive index of polyester fiber is about 1.7, which is extremely high compared to other fibers, and the difference in refractive index with air is large, 41'V, #(ff). This is due to the fact that the fibers are manufactured using the melt spinning method, so the surface is extremely smooth, making it difficult to penetrate at 0° (φIF).

従来、ポリエステル系繊維の発色性向」−を目的に、一
つは繊維表面に低／ｉｉｌ近ボの化合物を付与すること
により空気とＩ：ｔｖ　ａｔの屈折率差を少なくしてＫ
Ｒ維内部への入射光を多くする方法が知らｔＬテイル（
例えｒＪ：　ｌｒ￥開昭５３−４１１１９２号公報）が
、耐久性や４ｉｙ色堅牢度の点で問題がある。Conventionally, with the aim of improving the coloring tendency of polyester fibers, one approach was to reduce the difference in refractive index between air and I:TV at by adding a compound with a low/Iil near V to the fiber surface.
There is no known way to increase the amount of light incident on the inside of the R-tail (
For example, rJ: lr\Kokai No. 53-411192) has problems in terms of durability and 4iy color fastness.

もう一つは、繊維表面を１１１にする方法が提案されて
おり、ノリ力ゾル含有ポリマーを溶ｌｋｋ紡糸してアル
カリ処理等で表面を溶出させて表面に微細かつ複雑な凹
凸形状を形成せしめる特開昭５４−１２０７２８号公報
記載の方法や、酸化アルミニウム含有酸化ケイ素を添加
して重合紡糸してアルカリ処理等で表面を溶出させて、
表面に繊維軸方向にたて長の不連続なくを丁みとさらに
微少な凹凸を形成せしめる特開昭５６−７９７１４号公
報記載の方法や、ポリエステル系繊維にアルカリ金属水
酸化物溶液を付与した後乾燥して次いで水蒸気雰囲気中
で反応させて、稜線状の凸部と弧状の凹部からなる定形
のない凹凸を形成させる特開昭５６−１４４２６９号公
報記載の方法等を例として挙細ることができる０ しかしながら、特開昭５４−１２０．７８号公報記載の
場合は、紡糸時にシリカゾル等を添加。Another method has been proposed in which the surface of the fiber is 111, which involves spinning a polymer containing a glue sol and eluting the surface with alkali treatment, etc., to form a fine and complex uneven shape on the surface. Using the method described in Japanese Patent Publication No. 54-120728, or by adding aluminum oxide-containing silicon oxide, polymerizing and spinning, and eluting the surface with alkali treatment, etc.
The method described in JP-A-56-79714, in which fine irregularities are formed on the surface with discontinuous vertical grooves in the fiber axis direction, or the method described in JP-A-56-79714, or the method of applying an alkali metal hydroxide solution to polyester fibers. Examples include the method described in JP-A-56-144269, in which the material is post-dried and then reacted in a steam atmosphere to form irregular irregularities consisting of ridge-line convex portions and arc-shaped concave portions. Possible 0 However, in the case described in JP-A-54-120.78, silica sol or the like is added during spinning.

するため、圧力上昇、フィルター詰まり、口金汚れが生
じ、毛羽が発生したり、口金やガイド類の耐久性が悪く
なる。又微細な凹凸形成のために該合成線、維の可溶性
あるいは分解性を有する溶剤にて繊維表面層を溶出処理
せねばならないが、例えばポリエステル繊維の場合、ア
ルカリ減捲処理を行っているが、減量率が５％程度に制
限されており、風合改良のだめの高減址率の処理を行う
と繊維がぜい化する欠点を有する。As a result, pressure increases, filter clogging, mouthpiece stains occur, fuzz is generated, and the durability of the mouthpiece and guides deteriorates. In addition, in order to form fine irregularities, the surface layer of the fiber must be treated by elution with a solvent that is soluble or decomposable for the synthetic wire or fiber. For example, in the case of polyester fiber, alkali winding treatment is performed, but The weight loss rate is limited to about 5%, and the fibers have the disadvantage of becoming brittle if treated with a high weight loss rate to improve the feel.

特開昭５６−７９７１４号公報記載の場合にあっても、
上記と同様な欠点を有し、さらに色調が黄味になる欠点
もあわせもつでいる。Even in the case described in JP-A-56-79714,
It has the same drawbacks as above, and also has a yellowish color tone.

さらに特開昭５６−１４４２６９号公報記載の場合にあ
っても、繊維表面のアルカリ性化合物の濃度斑を有する
状態で５％以上の減亜加工を行う必要があるため繊維の
ぜい化は大である。Furthermore, even in the case described in JP-A-56-144269, the embrittlement of the fibers is not significant because it is necessary to perform a 5% or more atomization treatment while the fiber surface has uneven concentrations of alkaline compounds. be.

深色イヒ）効果の点からいっても、凹凸形状だけの場合
鏡面反射を少なくする効果はあっても繊維内への光の吸
収を助長する働きは少なく、くぼみとさらに微少な凹凸
の場合もまだ繊維内への光の吸収は充分でない。In terms of effectiveness, if there is only an uneven shape, it will have the effect of reducing specular reflection, but it will have little effect on promoting light absorption into the fiber, and if there are only indentations and even minute unevenness, Light absorption into the fiber is still insufficient.

本発明者等は、特別な添加物も必要とせず、繊維のぜい
化がなく、又繊維表面での鏡面反射を少なくするだけで
なく繊維内部への光の没入を助長し吸収光を多くするよ
うな繊維表面を得るべく鋭意研究の結果、特定の不連続
凹部のあるポリエステル系繊維表面が上記特性を有する
ことを見出し、本発明を完成するに到った０即ち本発明
は、＃ＪＬ維表面表面１０平方マイクロメーター当５〜
１００個の繊維軸方向に対し横長で長さ０．１〜２マイ
クロメーター、幅０．０１〜０，４マイクロメーター、
深さ０，１〜０．６マイクロメーターの不連続四部を有
することを特徴とする深色化し得るポリエステル系繊維
にある。The present inventors have developed a method that does not require any special additives, does not cause fiber embrittlement, and not only reduces specular reflection on the fiber surface, but also promotes the penetration of light into the interior of the fiber, increasing the amount of absorbed light. As a result of intensive research in order to obtain a fiber surface that has a specific discontinuous recessed portion, it was discovered that the surface of a polyester fiber with specific discontinuous recesses has the above characteristics, and the present invention was completed. 5 to 10 square micrometers of fiber surface surface
100 fibers horizontally elongated in the axial direction, length 0.1 to 2 micrometers, width 0.01 to 0.4 micrometers,
The present invention is a polyester fiber capable of becoming deep-colored, characterized by having four discontinuous sections with a depth of 0.1 to 0.6 micrometers.

上記不連続四部、換醒すればひび割れに浸入した光は、
鏡面反射することなく繊維内部に吸収され、染色物の深
色化につながる０よこ長のひび割れの深色化に有効な理
由は、繊維軸に直角に入射する光はひび割れの外へは逃
げられず確実に吸収されるためと推定出来る。In the above four discontinuous parts, when the light penetrates into the cracks,
The reason why light that is incident at right angles to the fiber axis cannot escape outside the crack is because it is absorbed into the interior of the fiber without specular reflection, leading to deep coloring of dyed products. It can be assumed that this is because it is reliably absorbed.

ひび割れの長さは、好ましくは０．１マイクロメ一ター
以上２マイクロメーター以下、さらに好ましくは０．１
５マイクロメ一ター以上０，８マイクロメーター以下で
０．１マイクロメ一ター未満では深色化効果が低下し、
２マイクロメーターを越えるとひび割れが連続化する傾
向が強く繊維強度の低下をまねく。The length of the crack is preferably 0.1 micrometer or more and 2 micrometers or less, more preferably 0.1 micrometer or less.
If it is 5 micrometers or more and 0.8 micrometers or less and less than 0.1 micrometers, the deep coloring effect will decrease,
If it exceeds 2 micrometers, cracks tend to become continuous, leading to a decrease in fiber strength.

ひび割れの幅は、好ましくは０．０１マイクロメ一ター
以上０．４７・ｒクロメータ−以］；で、さらに好まし
くは０．０２マイクロメ一ター以上６３マイクロメータ
ー以下である。The width of the crack is preferably 0.01 micrometer or more and 0.47·r chromator or less, and more preferably 0.02 micrometer or more and 63 micrometer or less.

深さは、ひび割れの上端部の最頂点とひび割れの最深部
との垂直距離のことで繊維の横断面の電子顕微鏡写真か
ら測定出来るが、０．１マイクロメｌ−ター以上０．６
マイクロメーター以下が好ましく、Ｑ、、、１マイクロ
メ一ター未満の場合は深色化効果が充分でなく、０．６
マイクロメーターを越える場合は繊維強度の低下につな
がる。Depth is the vertical distance between the top of the crack and the deepest part of the crack, and can be measured from an electron micrograph of the cross section of the fiber, but it is 0.1 micrometer or more 0.6
Q is preferably less than 1 micrometer, and if it is less than 1 micrometer, the deep coloring effect will not be sufficient, and 0.6
If it exceeds a micrometer, it will lead to a decrease in fiber strength.

ひび割れの数は、１０平方マイクロメーター当り５個以
上１００個以下が好ましく、５個未満では深色化効果が
得られず、１００個より多いと連続したひび割れになる
傾向が強く繊維強度の低下をまねく。The number of cracks is preferably 5 or more and 100 or less per 10 square micrometers; if it is less than 5, no deep coloring effect can be obtained, and if it is more than 100, there is a strong tendency for continuous cracks to form, which may lead to a decrease in fiber strength. Maneku.

かかる表面を有するポリエステル系繊維は、たとえばポ
リエステル系繊維をキャリヤーを添加して苛性ノーダ等
のアルカリ性水溶液中で加熱し、繊維表面を加水分がｆ
することによって得られる。Polyester fibers having such a surface can be produced by, for example, adding a carrier to polyester fibers and heating them in an alkaline aqueous solution such as caustic noda, so that the fiber surface is free from hydrolysis.
obtained by doing.

本発明におけるキャリヤーとは、従来ポリエステル系繊
維を染色する際に使用されており、例えばメチルナフタ
リン、クロルベンゼン、〇−フェニルフェノール、安息
香酸ブチル、安息香酸ベンジル、′す°リチル酸メチル
、ザリチル酸ベンジル、ジフェニルエーテル等を挙げる
ととが出来る。The carrier used in the present invention refers to carriers that have been conventionally used for dyeing polyester fibers, such as methylnaphthalene, chlorobenzene, 〇-phenylphenol, butyl benzoate, benzyl benzoate, methyl lithylate, and salicylic acid. Examples include benzyl and diphenyl ether.

本発明におけるキャリヤーの使用量は、ポリエステル系
繊維の形体、組織、浴比にも関係するが、一般にｏｉ　
３〜ｓ　ｏ　ｇ７Ｑであり、好ましくは２〜２０　ｊＪ
／Ｑである。The amount of carrier used in the present invention is related to the shape, texture, and bath ratio of the polyester fiber, but generally
3~s o g7Q, preferably 2~20 jJ
/Q.

本発明における力性ソーダ等ポリエステル系繊維の表面
を加水分解するアルカリの使用量は、一般に０．５〜６
０　ｆｉ／（ｔであり、さらに好ましくは１〜５０　ｌ
／Ｑである。In the present invention, the amount of alkali used to hydrolyze the surface of polyester fibers, such as sodium hydroxide, is generally 0.5 to 6
0 fi/(t, more preferably 1 to 50 l
/Q.

本発明において、ポリエステル系繊維の表面の加水分解
反応を促進し、キャリヤーや力性ソーダ等のアルカリの
使用量を減じるため、従来ポリエステル系繊細のアルカ
リ減捕加工に使用されている第四級アンモニウム塩等の
カチオン性化合物を併用することは好ましいことである
。In the present invention, in order to promote the hydrolysis reaction on the surface of polyester fibers and reduce the amount of alkali such as carrier and sodium hydroxide used, quaternary ammonium, which is conventionally used in alkali reduction processing of delicate polyester fibers, is used. It is preferable to use a cationic compound such as a salt.

本発明のポリエステル系繊維は、たとえば特開昭５４−
１２０７２８号公報やＩｔ’：？開閉５６−７９７１４
号公報に開示されている表面形態とは異なっており、繊
維のぜい化もなく染色した時により優れた深色化効果を
有する繊維である。The polyester fiber of the present invention can be used, for example, in JP-A-54-
Publication No. 120728 and It':? Opening/closing 56-79714
The surface morphology is different from that disclosed in the above publication, and the fiber has an excellent deep coloring effect when dyed without embrittlement of the fiber.

本発明におけ、るポリエステル系繊維とは、テレフタル
酸またはそのエステル形成性誘導体をジカルボン酸成分
とし、エチレングリコール、１．４−ブタンジオール等
から選ばれるグリコールまたけそのエステル形成性誘導
体をグリコール成分とするポリエステルを主な対象とす
る。In the present invention, polyester fibers include terephthalic acid or its ester-forming derivative as a dicarboxylic acid component, and a glycol selected from ethylene glycol, 1,4-butanediol, etc. or an ester-forming derivative thereof as a glycol component. The main target is polyester.

以下実施例を挙げて本発明を具体的に説明する０ 実施例１ ポリエステル梨地ジローゼットを安息香酸ブチル０〜２
０　ｆ／／１ＳＤＹＫ１１２５　　（一方社製第四級ア
ンモニウム塩系化合物）０〜２　ｇ／Ｑ、水酸化ナトリ
ウム２．２７７／ｉｔの浴比１：２０の浴中で１３０℃
で４５分処理し、アニオン活性剤２１７にで１００℃で
２０分ソーピングを行ない、水洗乾燥を行った。次いで
Ｌｌｉａ、ｎｉｘ　Ｂｌａｃｋ　Ｆｉ′Ｂ−ＦＳ（三菱
化成製、分散染料）１５％ｏＪ、　トーホーソル）ＴＤ
（東邦化学製、分散均染剤）０．５９／２、ウルトラＭ
Ｔ＄１７０（御幣島化学製、ＰＨＷ４＊剤）　０．５ｊ
ｊ／Ｑ　の浴比１：６０の染浴中で１３５℃６０分間染
色し、常法に従い還元洗浄、水洗乾燥を行なった。The present invention will be specifically described below with reference to examples.
0 f//1 SDYK1125 (Quaternary ammonium salt compound manufactured by Ichiba) 0 to 2 g/Q, 130°C in a bath of sodium hydroxide 2.277/it at a bath ratio of 1:20
The sample was treated with water for 45 minutes, soaped with anionic activator 217 at 100°C for 20 minutes, and washed with water and dried. Next, Llia, nix Black Fi'B-FS (manufactured by Mitsubishi Kasei, disperse dye) 15% oJ, Toho Sol) TD
(Toho Chemical, dispersion leveling agent) 0.59/2, Ultra M
T$170 (manufactured by Miheijima Chemical, PHW4* agent) 0.5j
The dyeing was carried out at 135° C. for 60 minutes in a dye bath with a j/Q ratio of 1:60, followed by reduction washing, water washing and drying according to conventional methods.

これらの染色物の４６０　ｎｍの反射率を自立自記分光
光度計ｈ！Ｐ’Ｒ２壓を使用して測定し、クペルカムン
クの式より光学濃ｅ　（Ｋ／Ｓ　ｌを算出して比較した
。蝉子順微鈍写真から繊維表面状位−を第　　１　　表 ゲ 第１表からも明らかなように本発明例で深みのある黒色
が得られた。これは、視感とも一致した。The reflectance of these dyes at 460 nm was measured using a free-standing self-recording spectrophotometer. The optical density e (K/S l) was calculated and compared using the Kuperkamunk equation.The fiber surface condition was determined from the microscopic photograph of the cicada.Table 1 As is clear from the figure, a deep black color was obtained in the example of the present invention. This also matched the visual perception.

実施例２ ポリエステル野蚕調糸使いニットをリリチル酸ベンジル
Ｉ　Ｕ　ｙ／Ｉｔ、エステラーゼＳＰ（東海製油阪第４
級アンモニウム塩素化合物）　２１／／ｌ。Example 2 A knit using polyester wild silkworm yarn was prepared using benzyl lyrilate IU y/It, esterase SP (Tokai Seisaku Yusaka No. 4)
class ammonium chlorine compound) 21//l.

水酸化ナトリウム４．８　Ｊ／／μの浴比１：２０の浴
中で１００℃で６０分処理し、アニオン活性剤２，９７
１１００℃で２０分ソーピンクを行ない、水洗、乾燥を
行った。次いで染料として（〜ＭｉｋｅｔｏｎＰｏｌｙ
ｅｓｔｅｒ　０ｒａｃｌｅ　ＢＦ　（三井東圧製分散染
料）２５／、　ｏｗｆ、　ｆＢＩ　Ｔｅｒａｓｉｌ　Ｎ
ａｖｙ　Ｂｔｕｅ　ＢＧ　　（チバガイギー製分散染料
）２％ＱＷｆの浴比１：３ｏｐＨ４，５の染浴中で１３
０℃６０分間染色し、常法に従い還元洗浄、水洗、乾燥
を行った。The anionic activator 2,97
Soaping was performed at 1100° C. for 20 minutes, followed by washing with water and drying. Then as a dye (~MiketonPoly
ester 0racle BF (Mitsui Toatsu disperse dye) 25/, owf, fBI Terasil N
avy Btue BG (Disperse dye manufactured by Ciba Geigy) 13
The dyeing was carried out at 0°C for 60 minutes, followed by reduction washing, washing with water, and drying according to conventional methods.

これらの染色物の（Ａ１４８０　ｎｍ　、　（Ｂ）　６
２０　ｎｍの反射率を測定し、い値を算出した。又走奢
舛電子顕微鏡写真から繊維表面の形状を観察した。These dyes (A1480 nm, (B) 6
The reflectance at 20 nm was measured and the negative value was calculated. The shape of the fiber surface was also observed using scanning electron micrographs.

それらの結果を第２表にまとめた。The results are summarized in Table 2.

第２表の結果から明らかなように１本発明例で深色化さ
れた有彩色の染色物が得らり、た。この結果は、視感と
もよく一致していた。As is clear from the results in Table 2, a deep-colored chromatic dyed product was obtained in one example of the present invention. This result was in good agreement with visual perception.

実施例５ ポリエステルのポリマー重合時にエチレングリコールに
粒子径１０〜２０ミリミクロンのシリカゾルを３重液％
添加しポリマーを得た。このポリマーを用いて紡糸延伸
を行ない７５ｄ１５６ｆの糸を得た、この糸を用いてｆ
ａ　ｔｌｋ　’に作成した。Example 5 During polymerization of polyester, 3% heavy liquid of silica sol with a particle size of 10 to 20 millimicrons was added to ethylene glycol.
A polymer was obtained. This polymer was spun and drawn to obtain a yarn of 75d156f.
Created in a tlk'.

この編地を４重量％の苛性ソーダ溶液に浸漬し、９５℃
で減量率５ｚのアルカリ減ｉｔを行った。This knitted fabric was immersed in a 4% by weight caustic soda solution at 95°C.
Alkaline reduction was performed at a weight loss rate of 5z.

これを比較例Ａ　１０とする。This is referred to as Comparative Example A10.

ポリエステルのポリマ一連合時にエチレングリコールに
平均の一次粒子径が５０ミリミクロンの酸化アルミニウ
ム含有酸化ケイ素を５重量％添加してポリマーを得た。When a polyester polymer was synthesized, 5% by weight of aluminum oxide-containing silicon oxide having an average primary particle size of 50 millimicrons was added to ethylene glycol to obtain a polymer.

このポリマーを用いて紡糸、延伸を行ない７５ｄ／１６
ｆの糸を得た。This polymer was spun and stretched to 75d/16
A thread of f was obtained.

この糸を用いて絹地を作成した。この〃ｉ地を４重量％
の苛性ソーダ溶液に没潰し、９５℃で減量率５．３％の
アルカリ減量を行った。これを比　１２− 紋別Ａ　１１とする。A silk fabric was made using this thread. 4% by weight of this material
It was crushed in a caustic soda solution and subjected to alkaline weight loss at 95°C with a weight loss rate of 5.3%. This is referred to as ratio 12-monbetsu A11.

ポリニス萎ルの７５ｒ１１５６ｆのレギエラー糸をノ 用いて絹地を作成した。この転地をカセイソーダ８０Ｊ
ｉｌ／Ｒを含む浴に浸漬し、マングルにて絞り生地重址
に対して９５％含浸させた。これを１１０℃で５分乾燥
した後１５０℃の飽和蒸気中で熱処理し減量率５，２ｚ
の編物を得た。これを比較何屋１２とする。A silk fabric was made using Polynis Doyle's 75r1156f Regierer yarn. Kasei Soda 80J
It was immersed in a bath containing il/R and squeezed with a mangle to impregnate the weight of the dough to 95%. This was dried at 110°C for 5 minutes and then heat treated in saturated steam at 150°C, resulting in a weight loss rate of 5.2z.
I obtained a knitted fabric. This is called Comparison Number 12.

ポリエステルの７５　ｄ／３６　ｆ　　のレギ＾ラー魂
を用いて絹地を作成した。この編地をカセイソーダ２．
２　ｆ／Ｑ、　Ｏ−フェニルフェノール１０ｇ／Ｑ。A silk fabric was created using 75 d/36 f polyester Regilla Tamashii. This knitted fabric is made of caustic soda 2.
2 f/Q, O-phenylphenol 10 g/Q.

ラウリルディメチルベンジルアンモニウムクロライド２
　Ｊ／／ｍを含む浴に浸清し、１５０℃で処理し減量率
４．７％の編物を得た。これを本発明側屈１６とする。Lauryldimethylbenzylammonium chloride 2
The knitted fabric was immersed in a bath containing J//m and treated at 150°C to obtain a knitted fabric with a weight loss rate of 4.7%. This is referred to as lateral bending 16 of the present invention.

この４種の絹物をそノ１．ぞれＤｉａｎｉｘ　Ｂｌａｃ
ｋ　ＦＢ−Ｆ、８１５免ｏｒｆの浴比１：６０−の染浴
中で１３０℃６０分間染色した後、還元洗浄し、水洗し
乾燥した。These four types of silk are part 1. Dianix Black
After dyeing at 130° C. for 60 minutes in a dye bath of k FB-F, 815 orf at a bath ratio of 1:60, it was subjected to reduction washing, washing with water, and drying.

これらの染色物の電子顕微鏡元真で観察される繊維の表
面状態と染色物のに／Ｓ　　及びひき裂強力を第３表に
まとめた。Table 3 summarizes the surface conditions of the fibers observed under an electron microscope and the ni/S and tear strength of these dyed products.

第３表 以上の結果より繊維方向によこ艮の長さ往１ｐｍ以上２
ｐｍ以下、幅ｕ、（Ｊｌｌｔｎｌ−以上Ｕ、４７ｚｍ以
下、誠さＵ、１μＦＪＩ　以上０．６μｍ以下の不連続
なひび割れが深色化にｈｍ著な効果をもつことが判明し
た。From the results shown in Table 3, the length of the transverse barb in the fiber direction is 1 pm or more2.
It was found that discontinuous cracks of pm or less, width u, (Jlltnl- or more U, 47zm or less, integrity U, 1μFJI or more and 0.6μm or less) have a remarkable effect on deep coloring.

Claims (1)

【特許請求の範囲】 １、　繊維表面１０平方マイクロメーター当りに５〜１
００個の繊ｍ　ｌｌ１ｌｔ方向に対し横長で長さ０１〜
２マイクロメーター、幅０，０１〜０４マイクロメータ
ー、深さ０１〜０．６マイクロメーターの不連続凹部を
有することを特徴とする深色化し得るポリエステル系繊
維。 ２　長さが０．１５〜０８マイクロメーターである特許
請求の範囲第１項記載の繊維。 Ｓ　幅が０．０２〜０３マイクロメーターであ′る特許
請求の範囲第１又は２項記載の繊維。[Claims] 1. 5 to 1 per 10 square micrometers of fiber surface
00 fibers m ll1lt horizontally long and length 01~
1. A polyester fiber capable of becoming deep-colored, characterized by having discontinuous recesses of 2 micrometers in width, 0.01 to 0.4 micrometers in width, and 01 to 0.6 micrometers in depth. 2. The fiber according to claim 1, having a length of 0.15 to 0.8 micrometers. The fiber according to claim 1 or 2, having a width of 0.02 to 0.3 micrometers.