JPS636109A - Polyester fiber multifilament having multilobed cross-section - Google Patents

Abstract

PURPOSE:The titled filaments having reduced waxy feeling, reduced rough feeling and appropriate stiffness to give a unique feeling and bulkiness and having a single filament fineness of smaller than a specific level and a specific single filament cross-sectional shape. CONSTITUTION:The present multifilaments have a single filament fineness of <=5.0 de and satisfy the formulas D2/D1>=2.5 and (D2-D1)/2W>=0.75 (wherein W is width of a lobe in the cross-section of a single filament; D1 is diameter of an inscribed circle in the cross-section; D2 is diameter of a circumcircle on the cross-section). The multifilaments comprise <=80% filaments having equal angles theta between the adjacent lobes and >=20% filaments having different angles between the adjacent lobes. When the multifilaments are subjected to an alkali weight reduction treatment, the rates of the weight reduction at the root part of the lobes are larger than those at the top parts of the lobes and the root parts become narrower than the top parts.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はワキシー感が少なくかつザラツキ感が少なく、
適度なハリ腰の感性に優れた新規な風合と嵩高を有する
ポリエステルマルチフィラメントに係わる。[Detailed description of the invention] [Industrial application field] The present invention has less waxy feeling and less rough feeling.
The present invention relates to a polyester multifilament that has a novel texture and bulk that has an excellent sense of firmness and elasticity.

〔従来の技術及び解決すべき問題点〕[Conventional technology and problems to be solved]

ポリエステル繊維は強度が高く、耐熱性及びイーシイケ
ア性に優れる等優れた特性を有するため広く衣料分野で
利用され曵いろが、合成繊維特有のワキシー感が強い問
題があり、その改善のため主として繊維断面を円型断面
から多角断面或は多葉断面とする手法が知られており、
ワキシー感の改善にはそれなりの効果がある。Polyester fibers are widely used in the clothing field because they have excellent properties such as high strength, excellent heat resistance, and easy care. There are known methods to change a circular cross section to a polygonal or multilobal cross section.
It has some effect on improving the feeling of waxiness.

しかし、多角断面化することによってザラツキ感の強い
手ざわり感となり好まれず多葉断面化するとザラツキ感
と同時に硬い風合となる問題があった。However, the polygonal cross-section gives the material a strong rough texture, which is not preferred, and the multi-lobed cross-section gives the material a rough and hard texture.

本発明はワキシー感が少なくかつザラツキ感の少ない適
度なハリ腰の感性に優れた新規な風合と嵩高性を有する
ポリエステルマルチフィラメントを提供するものである
。The present invention provides a polyester multifilament having a novel texture and bulkiness that is less waxy, less rough, and has a moderate firmness.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は、単繊維繊度が５．０デニール以下、単繊維横
断面内接円の直径（Ｄ、）と単繊維横断面（Ｗは単繊維
横断面系部の幅）力″−０．７５以上であって、隣り合
う二葉間の角度θが等角度のフィラメントが８０％以下
、異なる角度のフィラメントが２０％以上からなる多葉
断面ポリエステルマルチフィラメントである。In the present invention, the single fiber fineness is 5.0 denier or less, the diameter (D, ) of the inscribed circle of the single fiber cross section and the force of the single fiber cross section (W is the width of the single fiber cross section) -0.75 The above is a multi-lobed cross-sectional polyester multifilament in which 80% or less of the filaments have the same angle θ between two adjacent leaves, and 20% or more of the filaments have different angles.

本発明者等は、多葉断面ポリエステルマルチフィラメン
トにおいて、ワキシー感、ザラツキ感が少なく、しかも
適度なハリ腰の感性に優れた新規な風合と嵩高性を得る
ため条件について合う二葉間の角度が全フィラメントに
おいて等角度であるために織編物となったとき、布帛表
面に東部の突出し密度が高くなりすぎたり、硬い風合と
なりザラツキ感が問題となっていたことが判明した。The present inventors have developed a polyester multifilament with a multi-leaf cross section that has a novel texture and bulkiness that is less waxy and rough, and has a moderate firmness. It was discovered that because all the filaments were at equal angles, when the fabric was made into a woven or knitted fabric, the density of the eastern part of the fabric surface would be too high, resulting in a hard texture and roughness.

例えば単繊維繊度ｄ／ｘが５．０デニールを越えると衣
料用として感性のある風合を狙う場合硬以下では硬い風
合となりザラツキ感も強すぎるとなる。For example, if the single fiber fineness d/x exceeds 5.0 denier, when aiming for a sensitive feel for clothing, if it is less than hard, the texture will be hard and the roughness will be too strong.

間の角度が等角度の場合やはりザラツキ感が強く硬い風
合となる。この場合等角度のフィラメントが８０％以下
で異なる角度のフィラメントが２０％以上とするとザラ
ツキ感、硬さが減少し適度となるのである。更に異なる
形の多葉断面の混繊となり、繊維間空隙が大きくなり嵩
高性が増加する。If the angles between the two are equal, the texture will be very rough and hard. In this case, if the filaments at equal angles are 80% or less and the filaments at different angles are at least 20%, the roughness and hardness will decrease and become appropriate. Furthermore, the fibers are mixed with multi-lobed cross sections of different shapes, and the inter-fiber voids become larger, increasing the bulkiness.

本発明における多葉断面のフィラメントの東部の形状は
第１図、第２図、第３図の如くの例のみならず、いかな
る形状でもよく限定されるものでない。又、ポリエステ
ルとは、ポリエチレンテレフタレートのみならず共重合
ポリエステル或は各種の添加物を含有し【もよい。The shape of the eastern part of the filament having a multilobal cross section in the present invention is not limited to the examples shown in FIGS. 1, 2, and 3, but may be any shape. Moreover, polyester may contain not only polyethylene terephthalate but also copolymerized polyester or various additives.

又、多葉断面の東部の数は３個以上であり、マルチフィ
ラメントを形成する各フィラメントの東部数は同一でも
よく異なってもよい。Further, the number of eastern parts of the multifilament cross section is three or more, and the number of eastern parts of each filament forming the multifilament may be the same or different.

本発明の糸は、例えば次のような方法によって得ること
が出来る。The yarn of the present invention can be obtained, for example, by the following method.

第４図、第５図、第６図に示すような紡糸口かつ隣り合
う二葉間の角度が等角度の孔数が８０％以下、異なる角
度の孔数が２０％以上となるように同−紡糸口金内に混
在させ、ｄ／ｌが５．０デニール以下となるように通常
のポリエステルの溶融紡糸をして延伸することによって
得られる。又、紡糸と延伸を直結した方式でもよく、い
わゆる高速紡糸した部分配向糸（ｐｏｙ）、更に高速紡
糸したＨＯＹ等紡糸延伸手法に限定されない。As shown in Figures 4, 5, and 6, the number of holes at the spinneret with equal angles between two adjacent leaves is 80% or less, and the number of holes at different angles is at least 20%. It is obtained by mixing the polyester in a spinneret, melt-spinning and drawing the polyester so that d/l becomes 5.0 denier or less. Further, a method in which spinning and drawing are directly connected may be used, and the method is not limited to spinning and drawing methods such as so-called high-speed spun partially oriented yarn (POY), and even high-speed spinning HOY.

又、隣り合う二葉間の角度が等角度のフィラメントのみ
からなるマルチフィラメントを第４図に示す如くの孔形
からなる紡糸口金より紡糸０．７５以上でｄ／１が５．
０以下の場合、撚係数１５００以上（撚係数＝Ｔ４　Ｔ
　：撚数（回／ｍ）、Ｄ二デニール）の撚を加えると撚
の変形力を受け、隣り合う二葉間の角度が等角度であっ
たものが東部が変形して隣り合う二葉間の角度が異なる
フィラメントが出て来る。この時隣り合う二葉間の角度
が等角度のフィラメントが８０％、異なる角度のフィラ
メントが２０％とするためＫは撚係数が１５００以上が
必要であり、撚係数が更に多くなると等角度のフィラメ
ントが８０％以下となり、異なる角度のフィラメントが
２０％以上となり、異なる角度のフィラメントの各フィ
ラメントの角度θもバラバラとなりバラエティに富んで
来る。In addition, a multifilament consisting only of filaments with equal angles between two adjacent leaves is spun using a spinneret having a hole shape as shown in FIG.
If the twist coefficient is 0 or less, the twist coefficient is 1500 or more (twist coefficient = T4 T
: When twisting is applied (number of twists/m), D2 denier), the deformation force of the twist is applied, and even though the angle between two adjacent leaves is equal, the eastern part is deformed and the angle between two adjacent leaves changes. Filaments with different values come out. At this time, 80% of the filaments are filaments with equal angles between two adjacent leaves, and 20% are filaments with different angles, so the twist coefficient of K needs to be 1500 or more, and as the twist coefficient increases further, the filaments with equal angles 80% or less, filaments with different angles account for 20% or more, and the angle θ of each filament of the filaments with different angles also varies, resulting in a rich variety.

尚本発明の多葉断面ポリエステルマルチフィラメントは
、アルカリ減量加工をすると東部の先端部分よりも葉部
根元の部分方が減量速度が早いため根元の部分の方が多
く減量され、根元の部分が先端部より東部の幅が細くな
り、織編物の表面に突出している葉を手でされったとき
に東部を押し曲げる抗力が小さくなりザラツキ感を少な
くする効果がある。In addition, when the multi-lobed cross-section polyester multifilament of the present invention is subjected to alkali weight loss processing, the weight loss rate is faster at the leaf root portion than at the eastern tip portion, so the root portion loses more weight than the tip portion, and the root portion loses more weight than the tip portion. The width of the eastern part is narrower than that of the other parts, and when the leaves protruding from the surface of the woven or knitted material are touched by hand, the drag that pushes and bends the eastern part is reduced, which has the effect of reducing the roughness.

このアルカリ減量速度の差は葉部先端部の方が紡糸段階
での分子配向度が高く、これを延伸した後もその傾向が
残り、分子配向度の低い東部の根元の部分が減量速度が
早くなるものと推察される。This difference in alkali weight loss rate is due to the fact that the tip of the leaf has a higher degree of molecular orientation during the spinning stage, and this tendency remains even after drawing, and the weight loss rate is faster in the eastern root part, where the degree of molecular orientation is lower. It is assumed that this will happen.

〔実施例〕〔Example〕

以下実施例を示す。 Examples are shown below.

実施例１ ポリエチレンテレフタレートのブライトポリマーを用い
て、紡糸温度２８０℃で溶融紡出し冷却後油剤を付与し
て１４００　ｍ７分の速度で巻取り通常の手段で延伸し
た。Example 1 A bright polymer of polyethylene terephthalate was melt-spun at a spinning temperature of 280 DEG C. After cooling, an oil agent was applied thereto, the material was wound at a speed of 1400 m7, and stretched by conventional means.

この際、紡糸口金として三葉断面の形状とし間の角度及
びその孔数比率を変更し、表１の如くの組合せの７５デ
ニールの三葉断面ポリエステルｉルチフィラメントを得
た。At this time, the shape of the trilobal cross section of the spinneret, the angle between them, and the ratio of the number of holes were changed to obtain polyester i-multifilaments with a trilobal cross section of 75 denier having the combinations shown in Table 1.

得られた糸を緯糸として緯サテンの織物となし、−部ア
ルカリ減量加工を施し、染色加ニーセットを行ないポリ
エステル織物を手掛けている加工技術者により手ざわり
判定した結果を表１に示す。The obtained yarn was used as a weft to form a weft satin woven fabric, which was subjected to a -part alkali reduction treatment, dyed and knee-set, and the texture was evaluated by a processing engineer who handles polyester woven fabrics. Table 1 shows the results.

この表から明らかな如く本発明に該当する％４．５，６
，７．１０の織物はワキシー感、ザラツキ感、ハリ腰が
適度であってアルカリ減量加工品のＮｌｌｌ０はその中
でも特に良好である。As is clear from this table, the percentage corresponding to the present invention is 4.5, 6.
, 7.10 has a moderate waxy feel, roughness, and firmness, and the alkali-reduced product Nlll0 is particularly good among them.

Ｎ１１１０の１フイラメントを取出し、アルカリ減量加
工前後の横断面を第７図（アルカリ減量加工前）、第８
図（アルカリ減量加工後）に示した。両図の比較で明ら
かな如くアルカリ減量加工によって東部の根元部が葉部
先端部より多く減量されていることが分る。このためザ
ラツキ感をより良好にしているものである。One filament of N1110 was taken out, and the cross sections before and after alkali weight loss treatment were shown in Figure 7 (before alkali weight loss treatment) and Figure 8.
It is shown in the figure (after alkali reduction processing). As is clear from the comparison between the two figures, it can be seen that due to the alkali weight reduction process, the eastern root area has been reduced in weight more than the tip of the leaf. Therefore, the roughness is improved.

実施例２ ポリエチレンテレフタレートのプライトポリマーを紡糸
温度２８０℃、第４図に示す紡糸口金孔形状で孔数３６
からなる紡糸口金より溶融紡出し冷却固化したる後、油
剤を付与して１４００ｍ／分で巻取り、通常の延伸を行
なって７５デニール３６フイラメントの三葉ポリエステ
ルマルチフィラメントを得た。このフィラメントの隣り
合う二葉間の角度θはいずれの二葉間も１２０°の正三
葉断面であった。Example 2 A prite polymer of polyethylene terephthalate was spun at a temperature of 280°C, with a spinneret hole shape shown in Fig. 4 and a number of holes of 36.
After being melt-spun from a spinneret, cooled and solidified, an oil agent was applied thereto, the product was wound up at 1400 m/min, and conventionally drawn to obtain a trilobal polyester multifilament of 75 denier and 36 filaments. The angle θ between two adjacent lobes of this filament was a regular trilobal cross section of 120° between both lobes.

続いて撚係数を変更して、実施例１と同様に緯サテン織
物として染色加ニーセットを行なって手ざわり感を判定
し、更に織物より抜糸してマルチフィラメントの横断面
を写真にとり、隣り合う二葉間の各角度θを測定し、等
角度のフィラメント数、異なる角度のフィラメント数を
数え、その全体に占める百分率を計算し表２に示した。Next, the twist coefficient was changed and the weft satin fabric was dyed and knee-set in the same manner as in Example 1. Each angle θ in between was measured, the number of filaments at equal angles and the number of filaments at different angles were counted, and their percentages to the total were calculated and shown in Table 2.

表２から明らかな如く撚係数１５００以上のｆｆ１１２
．１３が手ざわり判定が良好であり、そのときの隣り合
う二葉間の角度のフィラメント及び異なるフィラメント
の百分率が本発明に相当するものであることが分りた。As is clear from Table 2, ff112 with a twist coefficient of 1500 or more
．． It was found that No. 13 had good texture judgment, and the filaments at the angle between two adjacent leaves and the percentage of different filaments corresponded to the present invention.

表２ 表１，２中　　×印：悪い △印：限界 ○印：良い ◎印：非常に良い を示す。Table 2 In Tables 1 and 2 × mark: Bad △ mark: limit ○ mark: good ◎mark: very good shows.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図、第３図は本発明に係るポリエステルフ
ィラメントの多葉断面例、第４図。 第５図、第６図はこれらを得るための紡糸口金孔形状例
、第７図はアルカリ減量加工前の多葉断面例、第８図は
アルカリ減量加工後の多葉断面例を示すものである。FIG. 1, FIG. 2, and FIG. 3 are multilobal cross-sectional examples of the polyester filament according to the present invention, and FIG. Figures 5 and 6 show examples of spinneret hole shapes for obtaining these, Figure 7 shows an example of a multi-lobed cross section before alkali weight loss processing, and Figure 8 shows an example of a multi-lobed cross section after alkali weight loss processing. be.

Claims (1)

【特許請求の範囲】 １、単繊維繊度が５．０デニール以下、単繊維横断面内
接円の直径（Ｄ＿１）と単繊維横断面外接円の直径（Ｄ
２）の比Ｄ＿２／Ｄ＿１が２．５以上、（Ｄ＿２−Ｄ＿
１）／２Ｗ（Ｗは単繊維横断面葉部の幅）が０．７５以
上であって、隣り合う二葉間の角度θが等角度のフィラ
メントが８０％以下、異なる角度のフィラメントが２０
％以上からなる多葉断面ポリエステルマルチフィラメン
ト。 ２、撚係数１５００以上の撚を有する特許請求の範囲第
１項記載の多葉断面ポリエステルマルチフィラメント。 ３、アルカリ減量加工をされた特許請求の範囲第１項及
び第２項記載の多葉断面ポリエステルマルチフィラメン
ト。[Claims] 1. Single fiber fineness is 5.0 denier or less, the diameter of the inscribed circle of the cross section of the single fiber (D_1) and the diameter of the circumscribed circle of the cross section of the single fiber (D_1)
2) ratio D_2/D_1 is 2.5 or more, (D_2-D_
1)/2W (W is the width of the single fiber cross-sectional leaf part) is 0.75 or more, the angle θ between two adjacent leaves is equal to 80% or less, and the filaments with different angles are 20% or less.
Multi-lobed cross-section polyester multifilament consisting of % or more. 2. The multi-lobed cross-section polyester multifilament according to claim 1, which has a twist with a twist coefficient of 1500 or more. 3. The multi-lobed cross-section polyester multifilament according to claims 1 and 2, which has been subjected to alkali weight reduction processing.