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JP4073835B2 - Polyester false twisted yarn for interlining - Google Patents
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JP4073835B2 - Polyester false twisted yarn for interlining - Google Patents

Polyester false twisted yarn for interlining Download PDF

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Publication number
JP4073835B2
JP4073835B2 JP2003198656A JP2003198656A JP4073835B2 JP 4073835 B2 JP4073835 B2 JP 4073835B2 JP 2003198656 A JP2003198656 A JP 2003198656A JP 2003198656 A JP2003198656 A JP 2003198656A JP 4073835 B2 JP4073835 B2 JP 4073835B2
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Prior art keywords
interlining
yarn
dtex
polyester
false
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JP2005036332A (en
Inventor
国夫 斉藤
直光 渡辺
郁夫 冨坂
啓太 勝間
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KB Seiren Ltd
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KB Seiren Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は婦人服、紳士服などに用いられ表地と接着性樹脂にて接着する接着芯地用途に適したポリエステル仮撚加工糸に関する。
【0002】
【従来の技術】
従来より婦人服や紳士服などを縫製する際に、縫製品の形態を保持し、風合い調整、易縫製性などの目的から、表地の裏面に接着剤を塗布した芯地が使用されている。
【0003】
芯地に要求される主な性能は、1)表地の寸法変化に追随するソフト性、2)芯地としてのコシ感、3)透明性、4)芯地基布組織の目ズレから発生する接着剤の裏抜けがないこと であった。
【0004】
例えば特許文献1のように経糸及び緯糸に全捲縮率が15〜40%の仮撚加工糸を用い表地への寸法追随製を向上させた芯地が提案されている。
【0005】
ところが、最近は衣服用素材が薄地化して透け易くなってきており、従来の仮撚加工糸を用いた芯地では表地の織組織と芯地の織組織が重なって縞状の模様が見えるモアレ現象が発生するという問題があった。
【0006】
このモアレ現象を防止する芯地として、特許文献2、特許文献3では芯地の目付変動率を規定したり、加工糸の発現トルクに着目した方法が提案されている。
【0007】
ところが、これらは90デニール/6フィラメントのポリエステル未延伸糸を仮撚加工工程で延伸同時仮撚施したものであり、仮撚時にポリエステル繊維の断面形状が崩れ、その為に繊維表面で光の乱反射が発生したり、延伸時の結晶化による白濁失透からモアレ発生は防止出来ても透明性に欠けるという問題があった。
【0008】
一方、特許文献4では30デニール/12フィラメントの延伸糸を仮撚し、仮撚全捲縮と発現トルクを規定し、経糸及び/または緯糸の曲がりの平均振幅、周期長を管理するという方法が提案されている。
【0009】
しかしながら、この方法では芯地用布帛の製造における管理が煩雑であるのでコストアップとなり、また繊度が高い為に透明性能が劣るという問題があった。
【0010】
【特許文献1】
特開昭62−97937号公報
【特許文献2】
特許第3279934号公報
【特許文献3】
特開平10−102344号公報
【特許文献4】
特許第3103003号公報
【0011】
【発明が解決しようとする課題】
本発明者等は、かかる従来技術の問題点を解消し、薄地衣料用素材に適した透明性があり、表地との干渉によるモアレ発生がなく、布帛の組織内目ズレによる表地との接着時の接着剤の裏抜けを防止でき、且つソフトな風合いもつ接着透明芯地に使用するに適したポリエステル仮撚加工糸を提供することにある。
【0012】
【課題を解決するための手段】
本発明者等は、上記の課題を解決するために鋭意検討を行った結果、以下のことを見出し本発明に到ったものである。1)薄地化、透明性向上には仮撚加工糸を構成するポリエステル繊維の繊度と単糸繊度が寄与する。2)異形断面糸を用い延伸糸を仮撚加工すれば透明性に優れた芯地を得ることできる。3)芯地の目ズレに起因する接着剤の裏抜けを防止するために、交絡が安定して入ることが必要である。
【0013】
すなわち本発明は、無機粒子含有量が0.05重量%以下である三角断面ポリエステル繊維で、10%SSが2.8〜3.5cN/dtexであるポリエステル直接紡糸延伸糸からなり、繊度が10〜22dtex、単糸繊度が0.8〜1.8dtexであり交絡数が20〜100個/mであることを特徴とする芯地ポリエステル仮撚加工糸を要旨とする。
【0014】
【発明の実施の形態】
以下に本発明を詳細に説明する。本発明に用いられるポリエステルは、ポリエチレンテレフタレートを主体とするポリエステルを用いることが好ましい。ポリエステルの極限粘度は特に限定するものではないが、紡糸性の点から、0.57〜0.65の範囲が好ましい。必要によっては5−スルフォイソフタル酸ソーダ、アジピン酸、セバシン酸、イソフタル酸などの酸成分や、ジエチレングリコール、トリエチレングリコール、ポリエチレングリコール、シクロヘキサンジメタノールなどのジオール成分を共重合したものが採用される。
【0015】
また、ポリエステルに含有する無機粒子は二酸化チタン、酸化亜鉛などが用いられるが、ポリエステルに対する含有量は本発明の目的の一つである透明性を維持するためには0.05重量%以下が必要である。0.05重量%を超えると、透明性に欠けるものとなる。
【0016】
本発明のポリエステル仮撚加工糸の繊維断面形状は異形断面である。断面の形状は、芯地のコシ感を付与する、透明性を付与するためには三角断面であることが必要である。三角断面の形状は、下式にて算出されるシェープファクター(Sf)にて表現することができるが、Sfは1.5〜2.5であれば好ましい。この範囲を満たすことによって、芯地のコシ感を高めることができ、上品な光沢の発現から透明性に優れた芯地が得られるので好ましい。
Sf=繊維断面の外接円直径/繊維断面の内接円直径
【0017】
本発明のポリエステル仮撚加工糸の繊度は、10〜22dtexであることが重要となる。好ましくは13dtex〜20dtex、より好ましくは15dtex〜17dtexである。従来の芯地用繊維は22dtexを超えるものが一般的であったが、22dtex以下とすることにより芯地の透明性が顕著に向上する。また、10dtex以上であれば、仮撚加工工程での糸切れが減少するので生産性が向上する。10dtex未満だと仮撚加工時の糸切れが多発したり、糸が飛び出す所謂サージング現象が多発するという問題が生じる。
【0018】
一方、ポリエステル仮撚加工糸の単糸繊度は0.8〜1.8dtexであることが必要である。好ましくは1.0dtex〜1.6dtex、より好ましくは1.2dtex〜1.5dtexである。この範囲であれば、コシ感があるので芯地として表地をサポートする機能に富んでおり、また薄地用衣服素材に適したソフト感もある。0.8dtex未満の場合コシ感に劣り、1.8dtexを超えるとソフト感に劣るものとなる。
【0019】
本発明のポリエステル仮撚加工糸は、仮撚捲縮加工工程で仮撚解撚後に、流体交絡処理を施して、交絡数が20〜100個/mであることが必要となり、30〜80個/mであればさらに好ましい。この範囲であれば、芯地基布組織内で加工糸の目ズレが発生しないので、芯地を表地に接着する際にアクリル酸やナイロン樹脂などの接着剤をドット処理しても、接着剤が裏抜けすることがなく透明接着芯地としての性能が向上する。交絡数が20個/m未満だと芯地基布組織内で加工糸の目ズレが頻発し、接着剤の裏抜けが多くなる。また、交絡数が100個/mを超えると加工糸としてのソフトで膨らみ感のある風合いを得ることが出来ない。
【0020】
また、本発明のポリエステル仮撚加工糸を構成するポリエステル繊維の10%SSは2.8〜3.5cN/dtexであることが必要である。この範囲であれば、仮撚加工糸の交絡を均一に付与することが可能となる。10%SSが3.5cN/dtexを超えると交絡が入りにくくなり、2.8cN/dtex未満であれば芯地のコシ感が劣るものとなる。10%SSが、3.0〜3.3cN/dtexだと交絡が特に安定するので好ましい。
【0021】
本発明のポリエステル仮撚加工糸はポリエステル直接紡糸延伸糸からなることが必要である。直接紡糸延伸糸であれば、従来公知の紡糸―延伸の2段階工程の所謂コンベンショナル法(コンベ延伸法)よりもコストが低く経済的に有利となり、またコンベ延伸糸よりも流体交絡処理による交絡が均一に入る。一方、経済的効率を高める為に、未延伸糸(UDY糸)や半延伸糸(POY糸)を仮撚加工工程で延伸同時仮撚するという方法が従来より採用されているが、POY糸を延伸同時仮撚すると延伸時の急激な結晶化による白濁失透減少から、透明性の劣る芯地となる。
【0022】
本発明の芯地に適したポリエステル仮撚加工糸を得るための具体的な方法は、ポリエステル樹脂を溶融後紡糸口金より押し出し、冷却後に油剤を付与して第1ゴデッドローラーで引き取り、延伸熱を付与した後に第2ゴデッドローラーとの間で延伸し熱セットを施し、巻き取り機にて巻き取る従来公知の直接紡糸延伸法にて異形断面ポリエステル繊維を得る。紡糸口金は、ポリエステル繊維の断面形状が異形断面となる紡出孔を適宜選択すればよい。
【0023】
次に、該ポリエステルに仮撚捲縮を施し、解撚後に交絡処理を行い加工糸を得る。仮撚捲縮処理には公知の装置・製法が適用可能である。例えばディスク仮撚機を用いる方法がある。交絡処理も公知の装置・製法が適用可能で、例えば流体交絡処理法などが知られており、安価なエアー交絡が好ましく用いられる。
【0024】
以下に本発明の芯地ポリエステル仮撚加工糸を用いて芯地を得る製造工程の一例を示す。
本発明のポリエステル仮撚加工糸を経糸、緯糸両方に用い、組織は平織として製織し、従来公知の方法で加工後に芯地用基布を得る。得られた織物のカバーファクターは、適宜選択して製織すればよいが、芯地としての性能を顕著なものとするために、仕上げ後のカバーファクターが500〜1000であることが好ましい。この範囲であれば、透明性にも、コシ感ソフト感にも優れ、表地との干渉によるモアレの発生抑制効果も大きくなる。
【0025】
【発明の効果】
本発明のポリエステル仮撚加工糸を用いて芯地を製造すると、透明性に優れ、モアレ発生がなく、接着剤をドット処理しても裏抜けがないために表地との接着性を向上することができる。また、細繊度異形断面糸であるので、芯地の機能としてのコシ感は損なわれずにソフト感があるので薄地衣料素材に適した風合いとなる。
【0026】
【実施例】
以下、実施例によって本発明を更に詳しく説明する。尚、以下の実施例のおける特性値は、次に示す方法によって測定したものである。
【0027】
(1)極限粘度
極限粘度[η]は、フェノール/テトラクロロエタン=6/4(重量比)の混合溶剤中20℃にて常法により測定した。
【0028】
(2)10%SS
オートグラフ引張り試験機(島津製作所製)を用い、初期長200mm、歪速度100%/分、初荷重1/30cN/dtexとして破断するまで引張り試験を実施し、伸度10%の強度を10%SSとして求めた。
【0029】
(3)シェープファクター(Sf)
得られたポリエステル繊維を綿で補強して、プレートに穿った穴に挿入し、スライスして画像解析装置を備えた光学顕微鏡にて観察し、断面の外接円の直径と、内接円の直径からSfを下記式にて算出した。
Sf=断面の外接円直径/断面の内接円直径
【0030】
(4)破断強度・破断伸度
上述した引張り試験にて破断強度及び破断伸度を求めた。
【0031】
(5)紡糸操業性
1週間紡出時の完全ボビン率が85%以上の場合を○、70%以上85%未満を△、70%未満の場合を×として評価した。
【0032】
(6)芯地透明性
本発明のポリエステル繊維を用いて製造した芯地用基布と、33dtex/12フィラメントの平織物(カバーファクター=770)とを重ねて、光を透過させ重なった部分と重ならない部分の区別が視認し難いものを○、視認できるものを×とした。
【0033】
(7)モアレ発生状況
透明性を確認する方法において、モアレ現象が認められないものを○、認められるものを×として評価した。
【0034】
(8)目ズレ発生状況
芯地用基布の外観を観察し、目ズレによる乱れが確認されないものを○、確認されるものを×として評価した。
【0035】
(9)風合い判定
芯地用基布の風合いをベテランが判定し、芯地として使用可能なコシがあり、ソフト感あるものを○、硬すぎるあるいはソフトでないものを×として評価した。
【0036】
(実施例1)
極限粘度が0.630で、二酸化チタン(TiO)を0.032重量%含有するポリエチレンテレフタレートポリマーを296℃で溶融し、Y型スリット紡糸口金から実質的に三角断面のポリエステル繊維を押し出し、冷却後に油剤を油付着し、75℃に加熱した第1ゴデッドローラー、128℃に加熱した第2ゴデッドローラーとの間で延伸し、熱セットを施して17dtex/12フィラメントの三角断面ポリエステル繊維を巻き取った。10%SSは表1記載の通りであった。その後、3枚ディスクからなるディスク仮撚機にて仮撚し、エアー交絡処理を行い表1記載の交絡数、繊度、単糸数を持つポリエステル仮撚加工糸を得た。
【0037】
該仮撚加工糸を用いて、経密度105本/2.5cm(1インチ)、緯密度67本/2.5cm(1インチ)の芯地用基布を製織し、透明性、モアレ発生状況、目ズレ状況を評価し表1記載の結果を得た。
【0038】
(実施例2〜3)
実施例2は、15dtex/12フィラメント、実施例3は22dtex/12フィラメントとする以外は実施例1と同様に紡糸して仮撚加工糸を得た。
【0039】
(比較例1〜2)
比較例1は33dtex/12フィラメント、比較例2は9dtex/12フィラメントとする以外は実施例1と同様に紡糸し仮撚加工を施した。繊度が本発明範囲外であり、比較例1は透明性が不良でありモアレも発生していた。比較例2は繊度が低すぎて仮撚加工工程で糸切れが頻発したので加工糸を得ることが出来なかった。
【0040】
(比較例3〜4)
比較例3は22dtex/6フィラメント、比較例4は15dtex/24フィラメントとする以外は実施例1と同様に紡糸し仮撚加工を施した。比較例3は単糸繊度が太過ぎる為に透明性が不良で風合いが硬いものとなり薄地用衣料素材には不適であった。また、比較例4は単糸繊度が低過ぎて仮撚加工中に毛羽が多発したので加工糸を得ることが出来なかった。
【0041】
(比較例5)
コンベンショナル法(コンベ法)で45dtex/12フィラメントの三角断面未延伸糸を1500m/分で巻き取り、延伸工程にて加熱ローラーヒーターと非加熱ドローローラー間でプレートヒーターを介して延伸熱処理を行い、17dtex/12フィラメントの延伸糸を得た。該繊維の10%SSが本発明を超えており、該繊維を用いて仮撚時にエアー交絡処理すると、交絡が入りにくく交絡数が本発明範囲外であり、芯地の目ズレ発生が顕著であった。
【0042】
(比較例6)
延伸倍率を低くする以外は実施例1と同様にして17dtex/12フィラメントのポリエステル繊維を得た。10%SSが本発明範囲を下回っており、仮撚捲縮加工時に断面形状が潰れ芯地を製造すると透明性が劣るものとなった。
【0043】
(比較例7)
実施例1と同様にして仮撚捲縮加工糸を得た。ただし、用いるポリエステル中の二酸化チタン含有率は0.06%として、15dtex/12フィラメントの延伸糸を得て仮撚加工を施した。無機粒子含有量が本発明範囲を超えており、芯地の透明性が劣るものとなった。
【0044】
(比較例8)
実施例1と同様にして仮撚捲縮加工糸を得た。ただし、紡糸口金の形状は丸型として、17dtex/12フィラメントの○断面延伸糸を得て仮撚加工を施した。繊維の断面形状が異形でないため、芯地の透明性が劣り、またコシ感のない風合いとなった。
【0045】
(比較例9)
実施例1と同様に溶融押出後、紡速2900m/分にて23dtex/12フィラメントの三角断面ポリエステルPOY糸を紡出した。該POY糸をディスク仮撚機にて延伸同時仮撚加工し、15dtex/12フィラメントの仮撚加工糸を得た。該加工糸の断面形状は潰れており、また失透しており芯地を製造すると透明性が劣るものとなった。
【0046】
(比較例10)
比較例5と同様にコンベンショナル法で未延伸糸(UDY糸)を紡出した。該UDY糸をディスク仮撚機にて延伸し仮撚して15dtex/12フィラメントの仮撚加工糸を得た。該加工糸の断面形状は潰れており、また失透しており芯地を製造すると透明性が劣るものとなった。
【0047】
(比較例11)
実施例1と同様に紡出したSPD糸を用い、仮撚しインターレースノズルのエアー圧を低くして交絡数が16個/mである仮撚加工糸を得た。該加工糸を用いて芯地を製造すると目ズレ発生が多く、接着剤を塗布すると裏抜けが多かった。
【0048】
(比較例12)
実施例1と同様に紡出したSPD糸を用い、仮撚しインターレースノズルのエアー圧を高くして交絡数が112個/mである仮撚加工糸を得た。交絡数が多過ぎて、仮撚加工糸の膨らみが無く風合いが硬くなり、またモアレ発生が見られた。
【0049】
【表1】

Figure 0004073835
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a polyester false twisted yarn suitable for use in an adhesive interlining used for ladies' clothing, men's clothing and the like and bonded to an outer surface with an adhesive resin.
[0002]
[Prior art]
Conventionally, when sewing women's clothing or men's clothing, an interlining with an adhesive applied to the back surface of the outer material has been used for the purpose of maintaining the shape of the sewn product, adjusting the texture, and easily sewing.
[0003]
The main performance required for the interlining is 1) softness to follow the dimensional change of the outer material, 2) stiffness as the interlining, 3) transparency, 4) adhesion caused by misalignment of the interlining fabric structure There was no see-through of the agent.
[0004]
For example, as disclosed in Patent Document 1, a core material has been proposed in which a false twisted yarn having a total crimp rate of 15 to 40% is used for the warp and the weft to improve the size following to the outer surface.
[0005]
Recently, however, clothing materials have become thinner and easier to see through, and with a conventional interlining made of false twisted yarn, the woven structure of the outer layer overlaps with the woven structure of the interlining to show a striped pattern. There was a problem that the phenomenon occurred.
[0006]
As an interlining that prevents this moire phenomenon, Patent Documents 2 and 3 propose a method that regulates the basis weight variation rate of the interlining or focuses on the expression torque of the processed yarn.
[0007]
However, these are 90 denier / 6-filament polyester unstretched yarns that are stretched and false-twisted in the false twisting process, and the cross-sectional shape of the polyester fiber collapses during false twisting. There is a problem that even if the generation of moire can be prevented due to white turbidity caused by crystallization during stretching or crystallization during stretching, it lacks transparency.
[0008]
On the other hand, Patent Document 4 discloses a method in which a drawn yarn of 30 denier / 12 filaments is false twisted, the false twist total crimp and expression torque are defined, and the average amplitude and period length of warp and / or weft bends are managed. Proposed.
[0009]
However, this method has a problem that the management in the production of the interlining fabric is complicated, resulting in an increase in cost, and the transparency performance is inferior due to the high fineness.
[0010]
[Patent Document 1]
Japanese Patent Laid-Open No. 62-97937 [Patent Document 2]
Japanese Patent No. 3279934 [Patent Document 3]
Japanese Patent Laid-Open No. 10-102344 [Patent Document 4]
Japanese Patent No. 3103003 [0011]
[Problems to be solved by the invention]
The inventors have solved the problems of the prior art, have transparency suitable for the material for thin fabrics, have no moire due to interference with the outer surface, and adhere to the outer surface due to misalignment in the fabric of the fabric. Another object of the present invention is to provide a polyester false-twisted yarn suitable for use in an adhesive transparent interlining having a soft texture that can prevent the back-through of the adhesive.
[0012]
[Means for Solving the Problems]
As a result of intensive studies to solve the above-mentioned problems, the present inventors have found the following and have reached the present invention. 1) The fineness and single yarn fineness of the polyester fiber constituting the false twisted yarn contribute to thinning and improving transparency. 2) An interlining excellent in transparency can be obtained by false twisting a drawn yarn using a modified cross-section yarn. 3) In order to prevent the adhesive from slipping through due to misalignment of the interlining, it is necessary that the entanglement enters stably.
[0013]
That is, the present invention comprises a triangular cross-section polyester fiber having an inorganic particle content of 0.05% by weight or less, a polyester directly spun drawn yarn having a 10% SS of 2.8 to 3.5 cN / dtex, and a fineness of 10 The gist of the invention is a polyester false twisted yarn for interlining, characterized by ˜22 dtex, single yarn fineness of 0.8˜1.8 dtex, and entanglement number of 20˜100 / m.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is described in detail below. The polyester used in the present invention is preferably a polyester mainly composed of polyethylene terephthalate. The intrinsic viscosity of the polyester is not particularly limited, but is preferably in the range of 0.57 to 0.65 from the viewpoint of spinnability. If necessary, a copolymer of acid components such as sodium 5-sulfoisophthalate, adipic acid, sebacic acid, and isophthalic acid, and diol components such as diethylene glycol, triethylene glycol, polyethylene glycol, and cyclohexanedimethanol is used. .
[0015]
In addition, titanium dioxide and zinc oxide are used as the inorganic particles contained in the polyester, but the content of the polyester is 0.05% by weight or less in order to maintain transparency, which is one of the objects of the present invention. It is. When it exceeds 0.05% by weight, the transparency is insufficient.
[0016]
The fiber cross-sectional shape of the polyester false twisted yarn of the present invention is an irregular cross-section. The shape of cross-section, to impart stiffness feeling of interlining, in order to impart transparency is required triangular sectional der Rukoto. The shape of the triangular cross section can be expressed by the shape factor (Sf) calculated by the following equation, and Sf is preferably 1.5 to 2.5. By satisfying this range, the stiffness of the interlining can be enhanced, and an interlining having excellent transparency can be obtained from the expression of elegant luster.
Sf = circumscribed circle diameter of fiber cross section / inscribed circle diameter of fiber cross section
It is important that the fineness of the polyester false twisted yarn of the present invention is 10 to 22 dtex. Preferably they are 13 dtex-20 dtex, More preferably, they are 15 dtex-17 dtex. Conventional fiber for the interlining is generally more than 22 dtex, but the transparency of the interlining is remarkably improved by setting it to 22 dtex or less. Moreover, if it is 10 dtex or more, since thread breakage in the false twisting process is reduced, productivity is improved. If it is less than 10 dtex, there are problems that yarn breakage frequently occurs during false twisting, and so-called surging phenomenon occurs in which the yarn jumps out.
[0018]
On the other hand, the single yarn fineness of the polyester false twisted yarn needs to be 0.8 to 1.8 dtex. Preferably they are 1.0 dtex-1.6 dtex, More preferably, they are 1.2 dtex-1.5 dtex. If it is in this range, there is a feeling of firmness, so it has a rich function to support the outer fabric as an interlining, and there is also a soft feeling that is suitable for thin fabric materials. When it is less than 0.8 dtex, the feeling of stiffness is inferior, and when it exceeds 1.8 dtex, the feeling of softness is inferior.
[0019]
The polyester false twisted yarn of the present invention needs to be subjected to a fluid entanglement treatment after false twisting in the false twist crimping process, and the number of entanglements needs to be 20 to 100 pieces / m, and 30 to 80 pieces. / M is more preferable. If it is within this range, misalignment of the processed yarn does not occur in the interlining fabric structure, so even if the adhesive such as acrylic acid or nylon resin is dot-treated when adhering the interlining to the outer fabric, the adhesive is not The performance as a transparent adhesive interlining is improved without any breakthrough. When the number of entanglements is less than 20 / m, misalignment of the processed yarn frequently occurs in the interlining base fabric structure, and the penetration of the adhesive increases. On the other hand, when the number of entanglements exceeds 100 / m, it is not possible to obtain a soft and swelled texture as processed yarn.
[0020]
Further, 10% SS of the polyester fiber constituting the polyester false twisted yarn of the present invention needs to be 2.8 to 3.5 cN / dtex. If it is this range, it will become possible to provide the entanglement of false twisted yarn uniformly. If the 10% SS exceeds 3.5 cN / dtex, the entanglement is difficult to enter, and if it is less than 2.8 cN / dtex, the stiffness of the interlining is inferior. It is preferable that 10% SS is 3.0 to 3.3 cN / dtex because confounding is particularly stable.
[0021]
The polyester false twisted yarn of the present invention needs to be made of a polyester direct-spun drawn yarn. Directly-spun drawn yarns are less expensive and economically advantageous than the so-called conventional method (combination drawing method), which is a conventionally known two-step process of spinning and drawing, and are more entangled by fluid entanglement than the drawn yarns. Enter uniformly. On the other hand, in order to increase economic efficiency, a method of drawing undrawn yarn (UDY yarn) or semi-drawn yarn (POY yarn) by simultaneous false twisting in a false twisting process has been conventionally employed. When the false false twist is simultaneously stretched, the transparency becomes inferior due to a decrease in cloudiness devitrification due to rapid crystallization at the time of stretching.
[0022]
A specific method for obtaining a polyester false-twisted yarn suitable for the interlining of the present invention is as follows: a polyester resin is melted and extruded from a spinneret, and after cooling, an oil agent is applied and taken up by a first goded roller. After being applied, it is stretched with a second goded roller, subjected to heat setting, and a modified cross-section polyester fiber is obtained by a conventionally known direct spinning stretching method of winding with a winder. As the spinneret, a spinning hole in which the cross-sectional shape of the polyester fiber has an irregular cross-section may be appropriately selected.
[0023]
Next, false twisting is applied to the polyester, and entanglement treatment is performed after untwisting to obtain a processed yarn. A known apparatus / manufacturing method can be applied to the false twist crimping process. For example, there is a method using a disk false twister. Known devices and manufacturing methods can be applied to the entanglement process. For example, a fluid entanglement method is known, and inexpensive air entanglement is preferably used.
[0024]
It illustrates an example of a manufacturing process to obtain the interlining with interlining for polyester false twisted yarn of the present onset bright below.
Using this onset bright polyester false twisted yarn warp, in both the weft, tissue weaving as plain weave, to obtain a base fabric for interlining after processing by a known method. The cover factor of the obtained woven fabric may be appropriately selected and weaved, but the cover factor after finishing is preferably 500 to 1000 in order to make the performance as the interlining remarkable. If it is this range, it will be excellent in transparency and a soft soft feeling, and the moire generation | occurrence | production suppression effect by interference with a surface will also become large.
[0025]
【The invention's effect】
When the interlining is manufactured using the polyester false twisted yarn of the present invention, the transparency is excellent, no moire occurs, and the adhesive does not show through even if the adhesive is dot-treated, so the adhesion to the outer surface is improved. Can do. In addition, since it is a finely shaped irregular cross-sectional yarn, the feeling of stiffness as a function of the interlining is not impaired, and there is a soft feeling, so that a texture suitable for a thin cloth material is obtained.
[0026]
【Example】
Hereinafter, the present invention will be described in more detail by way of examples. The characteristic values in the following examples are measured by the following method.
[0027]
(1) Intrinsic viscosity Intrinsic viscosity [η] was measured by a conventional method at 20 ° C. in a mixed solvent of phenol / tetrachloroethane = 6/4 (weight ratio).
[0028]
(2) 10% SS
Using an autograph tensile tester (manufactured by Shimadzu Corporation), a tensile test was conducted until the specimen broke with an initial length of 200 mm, a strain rate of 100% / min, and an initial load of 1/30 cN / dtex. Obtained as SS.
[0029]
(3) Shape factor (Sf)
The obtained polyester fiber is reinforced with cotton, inserted into a hole drilled in the plate, sliced and observed with an optical microscope equipped with an image analyzer, and the diameter of the circumscribed circle of the cross section and the diameter of the inscribed circle Sf was calculated from the following formula.
Sf = diameter of circumscribed circle / diameter of inscribed circle of cross section
(4) Breaking strength and breaking elongation The breaking strength and breaking elongation were determined by the tensile test described above.
[0031]
(5) Spinning operability: A case where the complete bobbin rate at the time of spinning for 1 week was 85% or more was evaluated as ◯, 70% or more and less than 85% was evaluated as Δ, and a case where it was less than 70% was evaluated as ×.
[0032]
(6) Interlining transparency A base fabric for interlining produced by using the polyester fiber of the present invention and a plain fabric (cover factor = 770) of 33 dtex / 12 filaments are overlapped to transmit light and overlap. The case where it was difficult to visually distinguish the non-overlapping parts was marked with ○, and the case where it was visible was marked with ×.
[0033]
(7) Moire Occurrence Status In the method for confirming the transparency, the case where the moire phenomenon was not recognized was evaluated as ◯, and the case where the moire phenomenon was observed was evaluated as ×.
[0034]
(8) Misalignment Occurrence Situation The appearance of the interlining fabric was observed and evaluated as ◯ when no disturbance due to misalignment was confirmed, and x when confirmed.
[0035]
(9) Texture determination A veteran determined the texture of the base fabric for the interlining, and there was a stiffness that could be used as an interlining, and a soft feeling was evaluated as ◯, and an evaluation that was too hard or not soft was evaluated as x.
[0036]
Example 1
A polyethylene terephthalate polymer having an intrinsic viscosity of 0.630 and containing 0.032% by weight of titanium dioxide (TiO 2 ) is melted at 296 ° C., and polyester fibers having a substantially triangular cross section are extruded from a Y-type slit spinneret and cooled. Later, the oil agent was adhered to the oil and stretched between the first goded roller heated to 75 ° C. and the second goded roller heated to 128 ° C., and heat-set to give a triangular cross-section polyester fiber of 17 dtex / 12 filaments. Winded up. 10% SS was as shown in Table 1. Thereafter, false twisting was performed with a disk false twisting machine composed of three disks, and air entanglement treatment was performed to obtain a polyester false twisted yarn having the number of entanglements, fineness, and number of single yarns shown in Table 1.
[0037]
Using the false twisted yarn, weaving a base fabric for interlining with a warp density of 105 / 2.5 cm (1 inch) and a weft density of 67 / 2.5 cm (1 inch), transparency and moiré occurrence The eye misalignment situation was evaluated and the results shown in Table 1 were obtained.
[0038]
(Examples 2-3)
Example 2 was spun in the same manner as in Example 1 except that 15 dtex / 12 filament and Example 3 was 22 dtex / 12 filament to obtain false twisted yarn.
[0039]
(Comparative Examples 1-2)
Spinning and false twisting were performed in the same manner as in Example 1 except that Comparative Example 1 was 33 dtex / 12 filament and Comparative Example 2 was 9 dtex / 12 filament. The fineness was outside the range of the present invention, and Comparative Example 1 had poor transparency and moire was also generated. In Comparative Example 2, the fineness was too low and yarn breakage occurred frequently in the false twisting process, so that a processed yarn could not be obtained.
[0040]
(Comparative Examples 3-4)
Comparative Example 3 was spun and false twisted in the same manner as Example 1 except that 22 dtex / 6 filament and Comparative Example 4 were 15 dtex / 24 filament. In Comparative Example 3, since the single yarn fineness was too thick, the transparency was poor and the texture was hard, and it was unsuitable for a thin fabric material. In Comparative Example 4, the single yarn fineness was too low, and fluff was frequently generated during false twisting, so that a processed yarn could not be obtained.
[0041]
(Comparative Example 5)
A conventional method (convex method) is used to wind a 45 dtex / 12 filament uncross-drawn triangular section yarn at 1500 m / min, and in the drawing process, a drawing heat treatment is performed between a heated roller heater and a non-heated draw roller via a plate heater, and 17 dtex. A / 12 filament drawn yarn was obtained. 10% SS of the fiber exceeds the present invention. When the air is entangled with the fiber during false twisting, the entanglement is difficult to enter and the number of entanglement is outside the range of the present invention, and the misalignment of the interlining is remarkable. there were.
[0042]
(Comparative Example 6)
A polyester fiber of 17 dtex / 12 filament was obtained in the same manner as in Example 1 except that the draw ratio was lowered. 10% SS was below the scope of the present invention, and when the cross-sectional shape was crushed during false twist crimping to produce an interlining, the transparency was inferior.
[0043]
(Comparative Example 7)
A false twist crimped yarn was obtained in the same manner as in Example 1. However, the titanium dioxide content in the polyester to be used was 0.06%, and a 15 dtex / 12 filament drawn yarn was obtained and false twisted. The inorganic particle content exceeded the range of the present invention, and the transparency of the interlining was inferior.
[0044]
(Comparative Example 8)
A false twist crimped yarn was obtained in the same manner as in Example 1. However, the shape of the spinneret was a round shape, and a 17 dtex / 12 filament ○ cross-section stretched yarn was obtained and false twisted. Since the cross-sectional shape of the fibers was not irregular, the transparency of the interlining was inferior and the texture did not feel stiff.
[0045]
(Comparative Example 9)
After melt extrusion in the same manner as in Example 1, 23 dtex / 12 filament triangular cross-section polyester POY yarn was spun at a spinning speed of 2900 m / min. The POY yarn was drawn and false-twisted with a disk false twisting machine to obtain a false-twisted yarn of 15 dtex / 12 filament. The cross-sectional shape of the processed yarn was crushed and devitrified, and when an interlining was produced, the transparency was inferior.
[0046]
(Comparative Example 10)
Similarly to Comparative Example 5, an undrawn yarn (UDY yarn) was spun by a conventional method. The UDY yarn was drawn with a disk false twister and false twisted to obtain a false twisted yarn of 15 dtex / 12 filament. The cross-sectional shape of the processed yarn was crushed and devitrified, and when an interlining was produced, the transparency was inferior.
[0047]
(Comparative Example 11)
Using the SPD yarn spun in the same manner as in Example 1, false twisting was performed to lower the air pressure of the interlace nozzle to obtain a false twisted yarn having an interlace number of 16 / m. When an interlining was produced using the processed yarn, a lot of misalignment was generated, and when an adhesive was applied, there were many breakthroughs.
[0048]
(Comparative Example 12)
Using the SPD yarn spun in the same manner as in Example 1, false twisting was performed, and the air pressure of the interlace nozzle was increased to obtain a false twisted yarn having an entangling number of 112 pieces / m. The number of entanglements was too large, the false twisted yarn did not swell, the texture became hard, and moiré was observed.
[0049]
[Table 1]
Figure 0004073835

Claims (2)

無機粒子含有量が0.05重量%以下である三角断面ポリエステル繊維で、10%SSが2.8〜3.5cN/dtexであるポリエステル直接紡糸延伸糸からなり、繊度が10〜22dtex、単糸繊度が0.8〜1.8dtexであり交絡数が20〜100個/mであることを特徴とする芯地ポリエステル仮撚加工糸。 Triangular cross-section polyester fiber having an inorganic particle content of 0.05% by weight or less, comprising 10% SS of 2.8 to 3.5 cN / dtex of polyester directly spun drawn yarn, fineness of 10 to 22 dtex, single yarn A polyester false twisted yarn for interlining, wherein the fineness is 0.8 to 1.8 dtex and the number of entanglements is 20 to 100 / m. 三角断面ポリエステル繊維のシェープファクター(Sf)が1.5〜2.5であることを特徴とする請求項1記載の芯地ポリエステル仮撚加工糸。 The polyester false twisted yarn for interlining according to claim 1, wherein the shape factor (Sf) of the triangular cross-section polyester fiber is 1.5 to 2.5.
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