JP3525972B2 - Method for producing covering elastic yarn - Google Patents
Method for producing covering elastic yarnInfo
- Publication number
- JP3525972B2 JP3525972B2 JP07011096A JP7011096A JP3525972B2 JP 3525972 B2 JP3525972 B2 JP 3525972B2 JP 07011096 A JP07011096 A JP 07011096A JP 7011096 A JP7011096 A JP 7011096A JP 3525972 B2 JP3525972 B2 JP 3525972B2
- Authority
- JP
- Japan
- Prior art keywords
- elastic yarn
- yarn
- covering
- draft
- roller
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 description 20
- 239000004814 polyurethane Substances 0.000 description 20
- 238000009940 knitting Methods 0.000 description 9
- 239000004744 fabric Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 229920002647 polyamide Polymers 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 5
- 239000004952 Polyamide Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 210000004177 elastic tissue Anatomy 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 229920002334 Spandex Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 239000004759 spandex Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、カバリング弾性糸
の製造方法に関する。さらに詳しくは、ポリウレタン系
弾性糸のような弾性糸にポリアミドフィラメント糸条等
の非弾性糸を一重または二重に巻き付けたカバリング弾
性糸の製造方法に関する。
【０００２】
【従来の技術】ポリウレタン糸等の弾性糸の周囲に非弾
性糸のポリアミド等のフィラメント糸を巻き付けたカバ
リング弾性糸は、弾性糸単独の問題である染色特性、機
械的強度、耐摩耗性などをカバ−して、機能的な伸縮性
を有する織編物用途やストッキング類に多く使用されて
いる。
【０００３】中でも、ストッキング用としては、一般的
に、非弾性糸の被覆用糸を一重に巻き付けたシングルカ
バリング弾性糸（ＳＣＹ）、二重に巻き付けたダブルカ
バリング弾性糸（ＤＣＹ）が広く用いられている。近
年、パンティストッキングは、従来のナイロンフィラメ
ントに仮撚加工を施したウ−リ−ナイロン糸のみを用い
たパンティストッキングから、ポリウレタン弾性糸にナ
イロンフィラメント糸を巻き付けてたカバリング弾性糸
と、ナイロンフィラメント糸とを一本交互にして編んだ
パンティストッキング（以後、交編サポ−トという）へ
と急激にシフトしてきた。
【０００４】この交編サポ−トは、ポリウレタン弾性糸
の伸長回復による優れたフィット性とともに耐久性も良
好で市場で好評を得ている。しかし、上記の交編サポ−
トは、物性の異なる異種の糸が交互に配列されているた
め、外観上はあたかもコ−ス斑（緯段）がある様に見
え、審美性に劣るという問題がある。
【０００５】上記のようなコ−ス斑（緯段）を解消する
とともにより優れたフィット性を得る目的から、カバリ
ング弾性糸のみでレッグ部を編成したストッキング、所
謂、ゾッキサポ−トが急激に増加している。しかしなが
ら、上記のゾッキサポ−トは、従来のカバリング弾性糸
を用いて編立てると、カバリング弾性糸の伸縮性の斑、
あるいは見掛け纖度斑に起因するリング状のコ−ス斑、
あるいはバンド状濃淡斑が現れるので、外観の向上が望
まれるストッキングしか得られないという問題がある。
【０００６】カバリング弾性糸とナイロンフィラメント
糸とを一本交互に配した交編サポ−トは、物性の異なる
二種類の糸が交互に編み立てられているため、前述した
様に編地に発生するコ−ス斑状の緯段によってカバリン
グ弾性糸の斑による編斑が隠されてしまう。しかし、カ
バリング弾性糸のみで編成したゾッキサポ−トではカバ
リング弾性糸の斑によるリング状斑やバンド状濃淡斑が
発現する。
【０００７】上記の問題を解決すべく、本発明者らはカ
バリング方法を検討した結果、本発明を見いだしたもの
である。
【０００８】
【発明が解決しようとする課題】本発明の目的は、均整
なカバリング弾性糸の製造方法を提供することにある。
さらに、濃淡斑が発現しないゾッキサポ−ト用のカバリ
ング弾性糸を提供することにある。
【０００９】
【課題を解決するための手段】すなわち、本発明は、プ
レドラフトロ−ラを用いて芯糸の弾性糸を供給し、非弾
性糸の被覆用糸を弾性糸にカバリングするカバリング弾
性糸の製造方法において、上記弾性糸とプレドラフトロ
−ラとの接触長（Ｌ）が０．１ｃｍ以上５ｃｍ以下で、
かつプレドラフトロ−ラの表面速度（Ｖ）が２００ｃｍ
／分以上２５００ｃｍ／分以下で、しかも、Ｌ×Ｖの値
が１８００ｃｍ／分以下の関係を満足することを特徴と
するカバリング弾性糸の製造方法、である。
【００１０】以下、本発明を詳細に説明する。本発明で
プレドラフトロ−ラと弾性糸との接触長（Ｌ）とは、プ
レドラフトトップロ−ラとプレドラフトボトムロ−ラの
ニップ点から、弾性糸がプレドラフトトップロ−ラより
離れる点迄の弾性糸の長さ（ｃｍ）をいう。本発明は、
プレドラフトロ−ラと弾性糸との接触長が０．１ｃｍ以
上５ｃｍ以下である。
【００１１】本発明で用いる弾性糸としては、ポリウレ
タン系弾性繊維、ポリアミド系エラストマ弾性繊維、ポ
リエステル系エラストマ弾性繊維、天然ゴム系繊維、合
成ゴム系繊維、ブタジエン系繊維、等が挙げられるが、
ストッキング用としては、その弾性特性、熱特性、耐久
性、等から好ましいのはポリウレタン系弾性繊維及びポ
リアミド系エラストマ弾性繊維である。
【００１２】本発明で用いる弾性糸は、８〜７０デニ−
ル程度が好ましく、より好ましくは１０〜４０デニ−ル
である。８デニ−ル未満では、糸強力が不足するのでカ
バリング時及び編立時に芯糸切れ等のトラブルを生じや
すく、又、ストッキングに用いた場合に伸縮性や耐久性
が不充分となり易いので好ましくない。逆に７０デニ−
ルを越えるとストッキングに用いた場合に透明感が低下
するとともに圧迫感が強く成りすぎ、又粗硬となり易く
好ましくない。
【００１３】本発明で被覆用として用いる非弾性糸は、
ポリアミド、ポリエステル、ポリオレフィン、ポリアク
リロニトリル等の合成繊維の他、ビスコ−スレ−ヨン、
キュプラレ−ヨン又は、絹等の再生繊維や天然繊維等が
挙げられる。本発明で用いる非弾性糸は、特に限定する
ものではないが、パンティストッキング用に用いる場合
は、染色特性、機械特性、耐摩耗特性等に優れたポリア
ミド繊維が好ましい。
【００１４】本発明で被覆糸として用いる非弾性糸は、
フィラメント糸であることが好ましく、被覆用フィラメ
ント糸の纎度は、５〜５０デニ−ルが好ましい。５デニ
−ル未満ではストッキングに用いた場合の耐久性に問題
があり、５０デニ−ルを越えると透明感が低下し好まし
くない。本発明で製造するカバリング弾性糸は、通常、
シングルカバリング弾性糸（ＳＣＹ）、またはダブルカ
バリング弾性糸（ＤＣＹ）であるが、特に限定するもの
ではない。
【００１５】次に、本発明の製造方法を図１、図２およ
び図３を用いて説明する。図１〜３は、本発明のカバリ
ング方法の一例を模式的に示す説明図である。芯糸にな
るポリウレタン系弾性糸１は、送り出しロ−ラ２、３に
よって送り出された後、プレドラフトロ−ラ４、５との
間で一次ドラフトされる。引続いて、中空スピンドル
６、撚止スネルガイド９を通ってデリベリロ−ラ１０、
１１との間で二次ドラフトされる。
【００１６】二次ドラフトの際、回転する中空スピンド
ル６に装着されたＨボビン７より非弾性糸である被覆用
糸８が伸長状態に有るポリウレタン系弾性糸１に、撚止
スネルガイド９の下部で巻き付けられカバリング弾性糸
１３になる。カバリング弾性糸は、デリベリロ−ラ１
０、１１を経てテ−クアップロ−ラ１２で捲き取られ
る。
【００１７】更に詳細には、ポリウレタン系弾性糸はプ
レドラフトロ−ラ上で、図２に示すように角度θでトラ
バ−スしながら図３に示すようにプレドラフトトップロ
−ラに接触しながら走行している。本発明の製造方法
は、ポリウレタン系弾性糸とプレドラフトトップロ−ラ
との接触長（Ｌ）が、
０．１≦Ｌ≦５
であり、プレドラフトロ−ラの表面速度（Ｖ）（ｃｍ／
分）が、２００≦Ｖ≦２５００ であり、さらに好まし
くは、
１００≦Ｖ≦１５００
であり、しかも、Ｌ×Ｖ≦１８００ であり、さらに好
ましくは、
Ｌ×Ｖ≦１７００
である。
【００１８】ポリウレタン系弾性糸とプレドラフトトッ
プロ−ラとの接触長（Ｌ）と、この接触長とプレドラフ
トロ−ラの表面速度、即ち弾性糸の速度との関係が１８
００ｃｍ／分以下であると均一なカバリング弾性糸が得
られる理由は明確ではないが次のように考えられる。ポ
リウレタン系弾性糸そのものは、糸製造工程や二次加工
工程での工程性能の向上、また、チ−ズからの解舒性向
上のため平滑性をよくする油剤が付与されている。この
油剤は、カバリング工程において、最初に接触するプレ
ドラフトロ−ラ上に最も蓄積し易い。
【００１９】本発明者らは、このプレドラフトロ−ラ上
に蓄積した油剤とプレドラフトロ−ラ上をトラバ−スし
ながら移動するポリウレタン系弾性糸の挙動との関連を
究明した結果、プレドラフトロ−ラ上に蓄積した油剤が
ある限度を越えると、ポリウレタン系弾性糸の挙動が不
均一になり易い。即ち、Ｌ×Ｖが１８００を越えると、
蓄積した油剤は、プレドラフトロ−ラ上でのポリウレタ
ン系弾性糸のトラバ−ス移動をスティクスリップ状に
し、プレドラフトロ−ラ以降の二次ドラフトが周期的に
変動し易い。このためポリウレタン系弾性糸の糸長方向
の均一性が損なわれ、均一なカバリング弾性糸が得られ
なくなる。
【００２０】その結果、上記のような弾性糸の糸長方向
の不均一なカバリング弾性糸を用いてゾッキサポ−トを
編成した場合には、カバリング弾性糸の伸縮性斑に起因
するコ−ス斑や濃淡斑が発現し易い。本発明の製造方法
は、プレドラフトロ−ラ上に不適切な油剤の蓄積があっ
ても、ポリウレタン弾性糸のプレドラフトロ−ラ以降の
二次ドラフトの周期的な変動がなくなり、均一なカバリ
ング弾性糸を製造することができる。
【００２１】
【発明の実施の形態】以下、本発明を実施例により具体
的に説明する。なお、編地の均整性は、レッグ部に台紙
を入れて、編地のコ−ス斑、濃淡斑等をループの大きさ
のバラツキを比較して、目視判定で次の３段階に評価し
た。
○；良好、△；やや不良、×；不良
【００２２】
【実施例１〜１５、比較例１〜６】非弾性糸である被覆
用糸としてナイロン６６の１０デニ−ルマルチフィラメ
ントを使用し、弾性糸である芯糸として１５デニ−ルの
ポリエ−テル系ポリウレタン系弾性糸（スパンデック
ス）を用いた。図１に示したカバリング機を使用して、
芯糸の弾性糸のドラフトを２．８とし、巻付け回数を１
６００Ｔ／Ｍでシングルカバリング弾性糸を製造した。
【００２３】プレドラフトトップロ−ラとスパンデック
スの接触長（Ｌ）とプレドラフトロ−ラの表面速度
（Ｖ）を表１のように変更して、それぞれＳ撚りとＺ撚
りのシングルカバリング弾性糸を製造した。得られたシ
ングルカバリング弾性糸を用い、永田精機（株）製のス
−パ−４編機（針数４００本）でＳ撚りのシングルカバ
リング弾性糸とＺ撚りのシングルカバリング弾性糸とを
交互に編機の給糸口に供給し、レッグ部編地はカバリン
グ弾性糸のみのパンティストッキングを編成し、通常の
方法にて染色仕上げ、及び型板セットしてパンティスト
ッキング製品とした。
【００２４】得られたパンティストッキング製品のにつ
いて評価した結果は 表１のとおりであった。
【００２５】
【表１】【００２６】表１に示すように本発明の実施例はレッグ
部編地にリング状のコ−ス斑やバンド状濃淡斑のない均
整なものが得られたが、比較例では均整性が劣ってい
た。
【００２７】
【発明の効果】本発明の製造方法は、従来の方法に比べ
て、均整性に優れたカバリング弾性糸を製造することが
でき、また、カバリング速度をアップすることが可能で
ある。また、得られたカバリング弾性糸を用いたゾッキ
パンストは、濃淡斑が発現しない、均整性に優れたもの
が得られる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a covering elastic yarn. More specifically, the present invention relates to a method for producing a covering elastic yarn in which a non-elastic yarn such as a polyamide filament yarn is wound single or double around an elastic yarn such as a polyurethane elastic yarn. 2. Description of the Related Art A covering elastic yarn in which a filament yarn such as a polyamide of an inelastic yarn is wound around an elastic yarn such as a polyurethane yarn is a dyeing property, a mechanical strength and an abrasion resistance which are problems of the elastic yarn alone. It is widely used in woven and knitted applications and stockings that have functional elasticity by covering properties. [0003] Above all, for stocking, generally, a single covering elastic yarn (SCY) in which a coating yarn of an inelastic yarn is wound single and a double covering elastic yarn (DCY) in which the covering yarn is double wound are generally used. ing. In recent years, pantyhose has been changed from a pantyhose using only a wool-nylon yarn obtained by subjecting a conventional nylon filament to false twisting to a covering elastic yarn obtained by winding a nylon filament yarn around a polyurethane elastic yarn, and a nylon filament yarn. Has rapidly shifted to pantyhose (hereinafter referred to as “knitting support”), which is alternately knitted. [0004] This mixed knitting support has been well-received in the market because of its excellent fitting property due to the recovery of elongation of the polyurethane elastic yarn and also its excellent durability. However, the above knitting support-
Since different types of yarns having different physical properties are alternately arranged, there is a problem in appearance that it looks as if there is a coarse spot (weft step) and the aesthetic quality is poor. [0005] For the purpose of eliminating the above-mentioned unevenness of the course (weft step) and obtaining a better fit, the stockings in which the legs are knitted with only the covering elastic yarn, so-called Zocchi support, are rapidly increasing. are doing. However, when the above-mentioned ZOKI support is knitted using a conventional covering elastic yarn, stretchy unevenness of the covering elastic yarn,
Alternatively, a ring-shaped course spot caused by an apparent fiber degree spot,
Alternatively, since band-like shading appears, there is a problem that only stockings for which an improvement in appearance is desired can be obtained. [0006] In the knitting support in which one covering elastic yarn and one nylon filament yarn are alternately arranged, two kinds of yarns having different physical properties are alternately knitted, so that the knitting support is generated on the knitted fabric as described above. The knitting unevenness due to the unevenness of the covering elastic yarn is hidden by the uneven wrinkles of the course. However, in the zokki support knitted only with the covering elastic yarn, ring-like spots and band-like shading due to the spots of the covering elastic thread appear. The present inventors have studied the covering method in order to solve the above problems, and have found the present invention. An object of the present invention is to provide a method for producing a uniform covering elastic yarn.
Another object of the present invention is to provide a covering elastic yarn for a zokki support that does not exhibit shading. That is, the present invention provides a covering elastic yarn for supplying a core yarn elastic yarn using a pre-draft roller and covering a non-elastic yarn coating yarn to the elastic yarn. In the manufacturing method, the contact length (L) between the elastic yarn and the pre-draft roller is 0.1 cm or more and 5 cm or less,
And the surface velocity (V) of the pre-draft roller is 200 cm
/ Min to 2500 cm / min and a value of L × V satisfies a relationship of 1800 cm / min or less. Hereinafter, the present invention will be described in detail. In the present invention, the contact length (L) between the pre-draft roller and the elastic yarn is from the nip point of the pre-draft top roller and the pre-draft bottom roller to the point where the elastic yarn is separated from the pre-draft top roller. Means the length (cm) of the elastic yarn. The present invention
The contact length between the pre-draft roller and the elastic yarn is 0.1 cm or more and 5 cm or less. The elastic yarn used in the present invention includes polyurethane elastic fibers, polyamide elastomer elastic fibers, polyester elastomer elastic fibers, natural rubber fibers, synthetic rubber fibers, butadiene fibers, and the like.
For stocking, polyurethane-based elastic fibers and polyamide-based elastomeric elastic fibers are preferred in view of their elastic properties, thermal properties, durability and the like. The elastic yarn used in the present invention is 8 to 70 denier.
And more preferably 10 to 40 denier. If it is less than 8 denier, the yarn strength is insufficient, so that problems such as breakage of the core yarn during covering and knitting are apt to occur, and when used for stockings, the elasticity and durability tend to be insufficient, which is not preferable. . On the contrary, 70 denier
If it exceeds 100 mm, it is not preferable because when used for stockings, the transparency is reduced and the feeling of pressure becomes too strong, and it tends to become coarse and hard. The inelastic yarn used for coating in the present invention is:
In addition to synthetic fibers such as polyamide, polyester, polyolefin, and polyacrylonitrile, bisco-rayon,
Regenerated fibers such as cupra rayon or silk, natural fibers, and the like are included. The inelastic yarn used in the present invention is not particularly limited, but when used for pantyhose, a polyamide fiber having excellent dyeing properties, mechanical properties, abrasion resistance and the like is preferable. The inelastic yarn used as the covering yarn in the present invention is:
It is preferably a filament yarn, and the fineness of the coating filament yarn is preferably 5 to 50 denier. If it is less than 5 deniers, there is a problem in durability when used for stockings, and if it exceeds 50 deniers, transparency is undesirably reduced. The covering elastic yarn produced in the present invention is usually
It is a single covering elastic yarn (SCY) or a double covering elastic yarn (DCY), but is not particularly limited. Next, the manufacturing method of the present invention will be described with reference to FIGS. 1, 2 and 3. 1 to 3 are explanatory diagrams schematically showing an example of the covering method of the present invention. The polyurethane-based elastic yarn 1 serving as a core yarn is sent out by sending-out rollers 2 and 3, and then primary-drafted between pre-draft rollers 4 and 5. Subsequently, delivery roller 10 through hollow spindle 6 and twisting snell guide 9,
11 and a second draft. At the time of the secondary drafting, the inelastic covering yarn 8 is extended from the H bobbin 7 mounted on the rotating hollow spindle 6 to the polyurethane elastic yarn 1 in an extended state, and the lower part of the twisting snell guide 9 is formed. To form the covering elastic yarn 13. The covering elastic yarn is a delivery belt 1
After passing through 0 and 11, it is taken up by the take-up roller 12. More specifically, the polyurethane elastic yarn travels on the pre-draft roller while traversing at an angle θ as shown in FIG. 2 and in contact with the pre-draft top roller as shown in FIG. are doing. According to the production method of the present invention, the contact length (L) between the polyurethane elastic yarn and the pre-draft top roller is 0.1 ≦ L ≦ 5, and the surface speed (V) (cm / cm) of the pre-draft roller is satisfied.
Min) is 200 ≦ V ≦ 2500, more preferably 100 ≦ V ≦ 1500, and L × V ≦ 1800, and even more preferably L × V ≦ 1700. The relationship between the contact length (L) between the polyurethane elastic yarn and the pre-draft top roller, and the relationship between this contact length and the surface speed of the pre-draft roller, ie, the speed of the elastic yarn, is 18
The reason why a uniform covering elastic yarn can be obtained at a flow rate of not more than 00 cm / min is not clear, but is considered as follows. The polyurethane-based elastic yarn itself is provided with an oil agent that improves smoothness in order to improve the process performance in the yarn manufacturing process and the secondary processing process, and to improve the unwinding property from the cheese. This oil agent is most likely to accumulate on the pre-draft troller that first contacts in the covering process. The present inventors have investigated the relationship between the oil agent accumulated on the pre-draft roller and the behavior of the polyurethane elastic yarn moving while traversing the pre-draft roller. If the accumulated oil exceeds a certain limit, the behavior of the polyurethane-based elastic yarn tends to be uneven. That is, when L × V exceeds 1800,
The accumulated oil agent makes the traverse movement of the polyurethane-based elastic yarn on the pre-draft roller sticky, and the secondary draft after the pre-draft roller tends to fluctuate periodically. For this reason, the uniformity of the polyurethane elastic yarn in the length direction is impaired, and a uniform covering elastic yarn cannot be obtained. As a result, when the zokki support is knitted using the above-described uneven covering elastic yarn in the yarn length direction, the unevenness of the course caused by the unevenness of the elasticity of the covering elastic yarn. And shading are easy to develop. According to the production method of the present invention, even if an inappropriate oil agent accumulates on the pre-draft roller, the periodic fluctuation of the secondary draft after the pre-draft roller of the polyurethane elastic yarn is eliminated, and a uniform covering elastic yarn is produced. can do. Hereinafter, the present invention will be described in detail with reference to examples. In addition, the uniformity of the knitted fabric was evaluated by visually judging the following three steps by comparing the unevenness of the size of the loop with the unevenness of the course, the shading, etc. of the knitted fabric by putting the backing on the leg part. . ；: Good, △: slightly poor, ×: poor Examples 1 to 15, Comparative Examples 1 to 6 A 10 denier multifilament of nylon 66 was used as a coating yarn which is an inelastic yarn. A 15-denier polyether-based polyurethane elastic yarn (spandex) was used as the core yarn as the elastic yarn. Using the covering machine shown in FIG. 1,
The draft of the elastic yarn of the core yarn is 2.8, and the number of windings is 1
A single covering elastic yarn was produced at 600 T / M. By changing the contact length (L) between the pre-draft top roller and the spandex and the surface speed (V) of the pre-draft roller as shown in Table 1, S-twisted and Z-twisted single covering elastic yarns were manufactured, respectively. did. Using the obtained single covering elastic yarn, an S-twisted single covering elastic yarn and a Z-twisting single covering elastic yarn are alternately formed on a Super-4 knitting machine (400 stitches) manufactured by Nagata Seiki Co., Ltd. The knitted fabric was supplied to the yarn feeder of the knitting machine, and the knitted fabric of the leg portion was knitted with pantyhose made of only covering elastic yarn, dyed by a usual method, and set with a template to obtain a pantyhose product. Table 1 shows the results of evaluation of the obtained pantyhose products. [Table 1] As shown in Table 1, in Examples of the present invention, a uniform knitted fabric with no ring-shaped spots or band-like shading was obtained in the leg knitted fabric, but the uniformity was poor in Comparative Examples. I was According to the production method of the present invention, a covering elastic yarn having excellent uniformity can be produced and the covering speed can be increased as compared with the conventional method. In addition, as for the Zocchi pantyhose using the obtained covering elastic yarn, one having no unevenness and excellent in uniformity can be obtained.
【図面の簡単な説明】
【図１】本発明のカバリング弾性糸の製造方法の一例を
模式的に示す説明図。
【図２】カバリング工程中のポリウレタン系弾性糸のプ
レドラフトロ−ラ上でのトラバ−スの状態を模式的に示
す説明図。
【図３】カバリング工程中のポリウレタン系弾性糸とプ
レドラフトロ−ラとの接触状態を模式的に示す説明図。
【符号の説明】
１ ；弾性糸
２、３ ；弾性糸の送出ロ−ラ−
４ ；プレドラフトボトムロ−ラ−
５ ；プレドラフトトップロ−ラ
６ ；中空スピンドル
７ ；被覆用糸を捲いたＨボビン
８ ；非弾性糸である被覆用糸、
９ ；撚止スネルガイド
１０、１１；デリベリロ−ラ
１２ ；テ−クアップロ−ラ
１３ ；カバリング弾性糸、
θ ；弾性糸のプレドラフトロ−ラ上でのトラバ−
ス角度
Ｌ ；弾性糸とプレドラフトロ−ラとの接触長BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view schematically showing an example of a method for producing a covering elastic yarn of the present invention. FIG. 2 is an explanatory view schematically showing a state of traverse of a polyurethane elastic yarn on a pre-draft roller during a covering step. FIG. 3 is an explanatory view schematically showing a contact state between a polyurethane elastic yarn and a pre-draft roller during a covering step. DESCRIPTION OF SYMBOLS 1; elastic yarns 2 and 3; elastic yarn sending roller 4; pre-draft bottom roller 5; pre-draft top roller 6; hollow spindle 7; H bobbin 8; coating thread which is an inelastic thread; 9; twisting snell guides 10, 11; delivery belt roller 12; take-up roller 13; covering elastic thread; θ: elastic thread on pre-draft roller Travers
Angle L: contact length between elastic yarn and pre-draft roller
Claims (1)
性糸を供給し、非弾性糸の被覆用糸を弾性糸にカバリン
グするカバリング弾性糸の製造方法において、上記弾性
糸とプレドラフトロ−ラとの接触長（Ｌ）が０．１ｃｍ
以上５ｃｍ以下で、かつプレドラフトロ−ラの表面速度
（Ｖ）が２００ｃｍ／分以上２５００ｃｍ／分以下で、
しかも、Ｌ×Ｖの値が１８００ｃｍ／分以下の関係を満
足することを特徴とするカバリング弾性糸の製造方法。(57) [Claim 1] A method for manufacturing a covering elastic yarn, comprising supplying an elastic yarn of a core yarn using a pre-draft roller and covering a covering yarn of an inelastic yarn to the elastic yarn. The contact length (L) between the elastic yarn and the pre-draft roller is 0.1 cm
Not less than 5 cm and not more than 200 cm / min and not more than 2500 cm / min
In addition, a method for producing a covering elastic yarn, wherein the value of L × V satisfies the relationship of 1800 cm / min or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07011096A JP3525972B2 (en) | 1996-03-26 | 1996-03-26 | Method for producing covering elastic yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07011096A JP3525972B2 (en) | 1996-03-26 | 1996-03-26 | Method for producing covering elastic yarn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09256229A JPH09256229A (en) | 1997-09-30 |
| JP3525972B2 true JP3525972B2 (en) | 2004-05-10 |
Family
ID=13422090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07011096A Expired - Fee Related JP3525972B2 (en) | 1996-03-26 | 1996-03-26 | Method for producing covering elastic yarn |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3525972B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090171259A1 (en) * | 2005-12-06 | 2009-07-02 | Balslev Bettina Soerensen | Abdominal Compression |
| JP6103491B2 (en) * | 2013-01-21 | 2017-03-29 | 東レ・オペロンテックス株式会社 | Unwinding assist device and unwinding method for polyurethane elastic yarn |
-
1996
- 1996-03-26 JP JP07011096A patent/JP3525972B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09256229A (en) | 1997-09-30 |
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