JPH02307905A - Spinneret of conjugate spinning - Google Patents
Spinneret of conjugate spinningInfo
- Publication number
- JPH02307905A JPH02307905A JP12779789A JP12779789A JPH02307905A JP H02307905 A JPH02307905 A JP H02307905A JP 12779789 A JP12779789 A JP 12779789A JP 12779789 A JP12779789 A JP 12779789A JP H02307905 A JPH02307905 A JP H02307905A
- Authority
- JP
- Japan
- Prior art keywords
- spinneret
- viscosity polymer
- flow
- composite
- low
- 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
- 238000009987 spinning Methods 0.000 title claims description 26
- 229920000642 polymer Polymers 0.000 claims abstract description 68
- 238000009826 distribution Methods 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims description 41
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 239000000835 fiber Substances 0.000 description 11
- 238000005452 bending Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Multicomponent Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、２種類の熱可塑性ポリマーを原料とする複合
紡糸口金の構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the construction of a composite spinneret made from two types of thermoplastic polymers.
従来提案されているサイドバイサイド型或いは、偏心鞘
芯型複合繊維紡糸用の口金構造は、２種類のポリマーを
口金より吐出する以前に各々のポリマーの導入路より同
一の吐出口に導き合流させた後、吐出する構造のものく
特公昭４１−１６１２５号公報、特公昭４２−２００６
号公報、実開昭６２−１５５７号公報等）が多数提案さ
れている。Conventionally proposed side-by-side type or eccentric sheath-core type composite fiber spinning spindle structures are such that before two types of polymers are discharged from the spinneret, each polymer is introduced from the introduction path to the same discharge port and then merged. , Japanese Patent Publication No. 41-16125, Publication of Discharge Structure, Japanese Patent Publication No. 42-2006
A number of proposals have been made, such as Japanese Utility Model Publication No. 62-1557, etc.).
しかし、いずれの口金構造においても、２種類のポリマ
ーの溶融粘度が異なる場合、紡糸孔から吐出されるポリ
マーが、溶融粘度の高いポリマーの方向へ湾曲する糸曲
り現象が起り、紡糸が不安定になったり、吐出ポリマー
が紡糸口金表面の吐出孔周辺に付着してしまって紡糸不
可能となる。However, in any of the spindle structures, if the two types of polymers have different melt viscosities, a yarn bending phenomenon occurs in which the polymer discharged from the spinning hole curves in the direction of the polymer with higher melt viscosity, making spinning unstable. Otherwise, the discharged polymer may adhere to the vicinity of the discharge holes on the surface of the spinneret, making spinning impossible.
糸曲りを抑制するための改良型口金として特開昭４９−
３０６１６号公報、特開昭４９−３０６１７号公報、特
開昭４９−３０６１８号公報、特開昭５１−１２７２１
１号公報、特開昭５２−５３０１９号公報等も提案され
ているが、いずれも口金構造が複雑化し製作加工が難し
く極めて高価なものとなったり、紡糸孔配置密度が著し
−く低下し、高生産性を維持するために大型かつ紡糸孔
数を極端に増やす事が必要なスパンボンド不織布の製造
には不向きであった。Unexamined Japanese patent publication 1973 as an improved type of mouthpiece for suppressing thread bending.
30616, JP 49-30617, JP 49-30618, JP 51-12721
No. 1, Japanese Patent Application Laid-Open No. 52-53019, etc. have also been proposed, but in both cases, the spinneret structure becomes complicated, manufacturing and processing becomes difficult and extremely expensive, and the density of the spinning holes is significantly reduced. However, it was unsuitable for producing spunbond nonwoven fabrics, which require a large size and an extremely increased number of spinning holes in order to maintain high productivity.
本発明は、上記の従来技術における欠点を解決するため
２種類の熱可塑性ポリマーを原料とする断面形状任意の
サイドバイサイド型あるいは偏心鞘芯型複合繊維を系油
りする事な（安定に紡糸でき、かつ紡糸孔数を極めて高
密度に配置可能な生産性に富むスパンボンド不織布等の
製造に適した複合紡糸口金を提供するにある。In order to solve the above-mentioned drawbacks of the prior art, the present invention has developed a method of spinning side-by-side type or eccentric sheath-core type composite fibers of any cross-sectional shape, made from two types of thermoplastic polymers, without using oil. Another object of the present invention is to provide a composite spinneret suitable for producing spunbond nonwoven fabrics, etc., which is highly productive and can arrange the number of spinning holes at an extremely high density.
本発明は、溶融粘度の異なる２種類の熱可塑性ポリマー
をサイドバイサイド型あるいは偏心鞘芯型に複合紡糸す
るための紡糸口金において、高粘度ポリマー孔（３ａ）
と低粘度ポリマー孔（３ｂ）が各々隣接する配置にて穿
設された分配板（１）と、複合流導入孔（５）が穿設さ
れた紡糸口金板（２）との間に、低粘度ポリマー（Ｂ）
を紡糸口金板の複合流導入孔（５）方向へ流入せしめる
低粘度ポリマー流路（４）を有する紡糸口金において該
低粘度ポリマー流路（４）の幅仙）が、ポリマー流れ方
向にわたって分配板の低粘度ポリマー孔（３ｂ）の直径
から紡糸口金板の複合流導入孔（５）の直径以上に連続
的に拡幅していることを特徴とする複合紡糸口金。The present invention provides a spinneret for composite spinning of two types of thermoplastic polymers having different melt viscosities in a side-by-side type or an eccentric sheath-core type.
A distribution plate (1) in which low viscosity polymer holes (3b) and low viscosity polymer holes (3b) are bored in an adjacent arrangement, and a spinneret plate (2) in which composite flow introduction holes (5) are bored, Viscosity polymer (B)
In a spinneret having a low viscosity polymer flow path (4) that allows the polymer to flow in the direction of the composite flow introduction hole (5) of the spinneret plate, the width of the low viscosity polymer flow path (4) extends across the polymer flow direction from the distribution plate. A composite spinneret characterized in that the diameter of the low viscosity polymer hole (3b) of the composite spinneret is continuously widened to a diameter greater than the diameter of the composite flow introduction hole (5) of the spinneret plate.
である。It is.
本発明の実施態様として好ましくは、溶融粘度の異なる
２種類の熱可塑性ポリマーをサイドバイサイド型あるい
は偏心鞘芯型に複合紡糸するための紡糸口金において、
高粘度ポリマー孔（３ａ）と低粘度ポリマー孔（３ｂ）
が各々隣接する配置にて穿設された分配板（１）と、前
記分配板の高粘度ポリマー孔（３ａ）と複合流導入孔（
５）および紡糸吐出孔（６）が穿設された紡糸口金板（
２）とが同心位置に配されていることを特徴とする複合
紡糸口金。Preferably, as an embodiment of the present invention, in a spinneret for composite spinning of two types of thermoplastic polymers having different melt viscosities in a side-by-side type or an eccentric sheath-core type,
High viscosity polymer pore (3a) and low viscosity polymer pore (3b)
a distribution plate (1) in which holes are formed adjacent to each other, a high viscosity polymer hole (3a) of the distribution plate and a composite flow introduction hole (
5) and a spinneret plate (
2) A composite spinneret characterized in that the and are arranged concentrically.
である。It is.
以下本発明の一例を添付した図面に従って説明する。An example of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の一態様を示す概略縦断面図、第２図は
第１図のＸ−Ｘ線における横断面図である。図において
、（１）は分配板であり、高粘度ポリマー孔（３ａ）お
よび低粘度ポリマー孔（３ｂ）が各々隣接する配置に対
をなして穿設されている。（２）は、前記分配板（１）
の高粘度ポリマー孔（３ａ）と同じ位置に複合流導入孔
（５）および紡糸吐出孔（６）が穿設された紡糸口金板
であり、その上面には、第２図に示した形状をもつ低粘
度ポリマー流路（４）が設けられている。FIG. 1 is a schematic vertical cross-sectional view showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line X--X in FIG. In the figure, (1) is a distribution plate in which high-viscosity polymer holes (3a) and low-viscosity polymer holes (3b) are bored in pairs in adjacent positions. (2) is the distribution plate (1)
This is a spinneret plate in which a composite flow introduction hole (5) and a spinning discharge hole (6) are bored at the same position as the high viscosity polymer hole (3a), and the top surface has a shape shown in FIG. A low viscosity polymer channel (4) is provided.
一方、第３図は従来一般的に用いられているサイドバイ
サイド型複合繊維紡糸用の紡糸口金である。この様な紡
糸口金を用いて溶融粘度の異なる２種類の熱可塑性ポリ
マーを紡糸すると、高粘度ポリマー（Ａ）は低粘度ポリ
マー（Ｂ）に押され湾曲した状態で吐出されるいわゆる
°′糸系油”現象が生じ、これがさらに著しくなると吐
出されたポリマー流が口金面の吐出孔（６）の周辺に付
着する様になり安定紡糸は不可能となる。On the other hand, FIG. 3 shows a conventionally commonly used spinneret for side-by-side type composite fiber spinning. When two types of thermoplastic polymers with different melt viscosities are spun using such a spinneret, the high viscosity polymer (A) is pressed by the low viscosity polymer (B) and discharged in a curved state, resulting in a so-called °' yarn system. An "oil" phenomenon occurs, and if this becomes more severe, the discharged polymer flow will adhere to the periphery of the discharge hole (6) on the spinneret surface, making stable spinning impossible.
この系油り現象は、紡糸口金板内における複合流の流動
挙動に原因があると考えられる。即ち、第３図のごとき
紡糸口金を用いて溶融粘度の異なる２種類のポリマーを
例えば複合比１：１にて紡糸する際、紡糸口金板内を流
れる複合流の半径方向速度分布の発達状態は溶融粘度の
違いにより各々異なるため結果として第４図口のごとき
非対称な速度分布となっていると推定され、従って紡糸
吐出孔吐出直後では両ポリマーの吐出線速度の遅いによ
りポリマー流は高粘度ポリマー側へ湾曲する形で吐出さ
れる。This oil-slicking phenomenon is thought to be caused by the flow behavior of the composite flow within the spinneret plate. That is, when two types of polymers with different melt viscosities are spun at a composite ratio of 1:1 using a spinneret as shown in Fig. 3, the development state of the radial velocity distribution of the composite flow flowing inside the spinneret plate is as follows. It is presumed that they differ due to the difference in melt viscosity, resulting in an asymmetric velocity distribution as shown in Figure 4. Therefore, immediately after discharge from the spinning discharge hole, the discharge linear velocity of both polymers is slow, so the polymer flow is a high-viscosity polymer. It is discharged in a curved shape to the side.
これに対し、本発明の紡糸口金は、紡糸口金板上面に設
けられた低粘度ポリマー流路（４）は、低粘度ポリマー
の流れ方向にわたってその流路幅（Ｗ）が分配板の低粘
度ポリマー孔（３ｂ）の直径から紡糸口金板の複合流導
入孔（５）の直径以上に連続的に拡幅している構造とな
っている。この様な拡幅形状の流路とすることで、この
部分を流れる低粘度ポリマー（Ｂ）の流速は流れの進行
に従って低下し、複合流導入孔にて高粘度ポリマー（八
）と合流する際、高粘度ポリマー（Ａ）の流速に比べて
十分に低い流速をもって導入口に導かれることになる。On the other hand, in the spinneret of the present invention, the low viscosity polymer flow path (4) provided on the upper surface of the spinneret plate has a flow path width (W) of the low viscosity polymer of the distribution plate in the flow direction of the low viscosity polymer. It has a structure in which the diameter of the hole (3b) is continuously widened to be larger than the diameter of the composite flow introduction hole (5) of the spinneret plate. By creating a channel with such a widened shape, the flow velocity of the low viscosity polymer (B) flowing through this part decreases as the flow progresses, and when it merges with the high viscosity polymer (8) at the composite flow introduction hole, It is led to the inlet at a flow rate that is sufficiently lower than that of the high viscosity polymer (A).
従って紡糸口金板内を流れる複合流は第４図イに示す様
な対称な速度分布となり、従来型紡糸口金板を用いた場
合に見られる糸曲り現象はほとんど起らない。 低粘度
ポリマー流路（４）は、流れ方向にわたって連続的に拡
幅されていることが必要である。例えば第５図に示す様
な流路の途中から流路幅（賀）が急拡大する様な形状に
すると、低粘度ポリマー（Ｂ）はその速度分布が不安定
な状態で高粘度ポリマー（Ａ）と合流するため複合流の
流動状態も不安定化し紡糸性の悪化を招く。また拡幅直
後においてポリマー流によどみが生じ易（ポリマーの熱
劣化・ゲル化の原因ともなる。Therefore, the composite flow flowing through the spinneret plate has a symmetrical velocity distribution as shown in FIG. The low viscosity polymer channel (4) needs to be continuously widened in the flow direction. For example, if the shape of the channel is such that the channel width suddenly increases from the middle of the channel as shown in Figure 5, the low viscosity polymer (B) will be transferred to the high viscosity polymer (A) with its velocity distribution being unstable. ), the flow state of the composite flow becomes unstable, leading to deterioration of spinnability. In addition, stagnation tends to occur in the polymer flow immediately after widening (this can also cause thermal deterioration and gelation of the polymer).
本発明のもう一つの特徴は、２種類のポリマーの相対的
な粘度差を変えることで複合繊維の断面形状をコントロ
ールすることが可能な点にある。Another feature of the present invention is that the cross-sectional shape of the composite fiber can be controlled by changing the relative viscosity difference between the two types of polymers.
一般に粘度の異なる相溶性のない２液が円管内を層流状
態で流れる場合、流れの進行に従って低粘度液が高粘度
液を包み込む流動断面に変化してゆくことが知られてい
る。そしてこの傾向は２液の粘度差が大きい程大きい、
この現象を利用することで偏心鞘芯型に近い断面形状を
有する複合繊維を紡糸することが考えられるが、従来型
の紡糸口金では、溶融粘度差の大きい２種類のポリマー
を組合せようとすると前述の様に糸曲り現象が発生して
安定な紡糸は不可能である。糸曲りを発生させず安定紡
糸を可能にするためには、２種類のポリマーの溶融粘度
の組合せは自ずと限定されてしまい、結果として得られ
る複合繊維の断面形状も固定されたものとなってしまう
。Generally, when two incompatible liquids with different viscosities flow in a circular tube in a laminar flow state, it is known that as the flow progresses, the flow cross section changes to a flow cross-section in which the low-viscosity liquid envelops the high-viscosity liquid. This tendency increases as the viscosity difference between the two liquids increases.
By utilizing this phenomenon, it is possible to spin composite fibers with a cross-sectional shape similar to an eccentric sheath-core type, but with conventional spinnerets, it is difficult to combine two types of polymers with a large difference in melt viscosity. Stable spinning is impossible due to yarn bending phenomenon. In order to enable stable spinning without yarn bending, the combinations of melt viscosities of the two types of polymers are naturally limited, and the cross-sectional shape of the resulting composite fibers is also fixed. .
ところが本発明の複合紡糸口金を用いる場合は、前述の
様に糸曲り現象が生じに（いため、例えば高粘度ポリマ
ーを固定し、低粘度ポリマーの粘度を種々変化させるこ
とで、サイドバイサイド型から偏心鞘芯型に至る任意の
断面形状の複合繊維を糸曲りを生じることなく安定して
紡糸することが可能となる。However, when using the composite spinneret of the present invention, the yarn bending phenomenon occurs as described above (for example, by fixing a high viscosity polymer and varying the viscosity of a low viscosity polymer, it is possible to change the spinneret from a side-by-side type to an eccentric sheath type. It becomes possible to stably spin conjugate fibers of any cross-sectional shape up to a core shape without causing yarn bending.
実施例１〜５
ポリエチレンテレフタレートの還元粘度（〇−クロロフ
ェノール中、３５°Ｃ）の異なった組合せによって本発
明の紡糸口金を用いて複合紡糸を行い第１表に示す結果
を得た（孔当り吐出量１．０ｇ７分、複合比１：１、紡
糸温度２９５°Ｃ１紡糸吐出孔直径０．３５ｍｍ） 、
いずれの組合せにおいても糸曲り現象は小さく、また種
々異った断面形状の複合繊維が安定して紡糸できた。Examples 1 to 5 Composite spinning was performed using the spinneret of the present invention with different combinations of reduced viscosities (in 0-chlorophenol, 35°C) of polyethylene terephthalate, and the results shown in Table 1 were obtained (per hole Discharge amount 1.0g 7 minutes, composite ratio 1:1, spinning temperature 295°C, spinning discharge hole diameter 0.35mm),
In all combinations, the yarn bending phenomenon was small, and composite fibers with various cross-sectional shapes could be stably spun.
比較例１〜５
第３図に示した従来型の紡糸口金を用い実施例と同条件
で複合紡糸を行った０本発明の紡糸口金を用いた場合に
比べ糸曲り現象が著しく、特に粘度差の大きい２種類の
ポリマーでは安定紡糸は不可能であった。Comparative Examples 1 to 5 Composite spinning was carried out using the conventional spinneret shown in Figure 3 under the same conditions as in the examples.The yarn bending phenomenon was remarkable compared to when the spinneret of the present invention was used, especially the viscosity difference. Stable spinning was not possible with the two types of polymers with large .
以下余白
〔発明の効果］
本発明の紡糸口金は、溶融粘度の異なる２種類の熱可塑
性ポリマーをサイドバイサイド型あるいは偏心鞘芯型複
合繊維を糸曲り現象を生ずることなく安定して紡糸する
ことができる。Margins below [Effects of the Invention] The spinneret of the present invention can stably spin side-by-side type or eccentric sheath-core type composite fibers from two types of thermoplastic polymers with different melt viscosities without causing yarn bending phenomenon. .
また、各部の構造は非常に単純化されており製作加工も
容易でかつ紡糸吐出孔数を極めて高密度に配置すること
が可能で、高生産性を要求されるスパンポンド不織布の
製造用に適したものである。In addition, the structure of each part is extremely simple, making it easy to manufacture and process, and the number of spinning discharge holes can be arranged extremely densely, making it suitable for manufacturing spunpond nonwoven fabrics that require high productivity. It is something that
加えて、２種類のポリマーのうち一方の重合、押出・紡
糸温度条件によってポリマーの溶融粘度を変更すること
のみで繊維・不織布の強度物性・熱接着性、捲縮嵩高性
等の要求緒特性に応じ、サイドバイサイド型から偏心鞘
芯型に至る任意の断面形状を有する複合繊維を紡糸する
ことが可能である。In addition, by simply changing the melt viscosity of one of the two polymers depending on the polymerization, extrusion, and spinning temperature conditions, it is possible to meet the required properties of fibers and nonwoven fabrics, such as strength, thermal adhesion, and crimp bulk. Accordingly, it is possible to spin composite fibers having any cross-sectional shape from side-by-side type to eccentric sheath-core type.
第１図は本発明に係る複合紡糸口金の一例を模式的に示
す部分縦断面図、第２図は第１図のＸ−ＸｖＡにおける
横断面図である。第３図は従来一般的に用いられている
サイドバイサイド型複合紡糸口金を模式的に示す部分縦
断面図。第４図イ９口は紡糸口金板内を流れる複合流の
速度分布の発達状態と糸曲り現象の関係を示す模式図で
あり、第４図イは本発明紡糸口金、第４図口は従来型の
紡糸口金を用いた場合を示している。第５図は、低粘度
ポリマー流路の流路幅（Ｗ）が非連続的に拡幅されてい
る例を示す模式図である。
■・・・分配板、２・・・紡糸口金板、３ａ・・・高粘
度ポリマー孔、３ｂ・・・低粘度ポリマー孔、４・・・
低粘度ポリマー流路、５・・・複合流導入孔、６・・・
紡糸吐出孔、７・・・吐出ポリマー、Ａ・・・高粘度ポ
リマー、Ｂ・・・低粘度ポリマー、Ｗ・・・低粘度ポリ
マー流路中。
特許出願人 旭化成工業株式会社
代理人 弁理士 渡 辺 −雄
第１図 第２ｅｉｉ
第３図
第４図イ 第４図口FIG. 1 is a partial longitudinal cross-sectional view schematically showing an example of a composite spinneret according to the present invention, and FIG. 2 is a cross-sectional view taken along line X-XvA in FIG. 1. FIG. 3 is a partial vertical sectional view schematically showing a side-by-side type composite spinneret that has been commonly used in the past. FIG. 4A is a schematic diagram showing the relationship between the development of the velocity distribution of the composite flow flowing in the spinneret plate and the yarn bending phenomenon. FIG. 4A is the spinneret of the present invention, and FIG. The case is shown in which a mold spinneret is used. FIG. 5 is a schematic diagram showing an example in which the channel width (W) of the low-viscosity polymer channel is discontinuously widened. ■... Distribution plate, 2... Spinneret plate, 3a... High viscosity polymer hole, 3b... Low viscosity polymer hole, 4...
Low viscosity polymer flow path, 5... Composite flow introduction hole, 6...
Spinning discharge hole, 7...Discharged polymer, A...High viscosity polymer, B...Low viscosity polymer, W...Low viscosity polymer in flow path. Patent Applicant Asahi Kasei Industries Co., Ltd. Agent Patent Attorney Watanabe -Yo Figure 1 Figure 2eiii Figure 3 Figure 4B Figure 4 Entrance
Claims (1)
ドバイサイド型あるいは偏心鞘芯型に複合紡糸するため
の紡糸口金において、高粘度ポリマー孔（３ａ）と低粘
度ポリマー孔（３ｂ）が各々隣接する配置にて穿設され
た分配板（１）と、複合流導入孔（５）が穿設された紡
糸口金板（２）との間に、低粘度ポリマー（Ｂ）を紡糸
口金板の複合流導入孔（５）方向へ流入せしめる低粘度
ポリマー流路（４）を有する紡糸口金において、該低粘
度ポリマー流路（４）の幅（Ｗ）が、ポリマー流れ方向
にわたって分配板の低粘度ポリマー孔（３ｂ）の直径か
ら紡糸口金板の複合流導入孔（５）の直径以上に連続的
に拡幅していることを特徴とする複合紡糸口金。1. In a spinneret for composite spinning of two types of thermoplastic polymers with different melt viscosities in a side-by-side type or eccentric sheath-core type, arrangement in which high-viscosity polymer holes (3a) and low-viscosity polymer holes (3b) are adjacent to each other. The low viscosity polymer (B) is introduced into the spinneret plate in a composite flow between the distribution plate (1), which is drilled in In a spinneret having a low viscosity polymer channel (4) that allows the flow to flow in the direction of the hole (5), the width (W) of the low viscosity polymer channel (4) extends in the polymer flow direction from the low viscosity polymer hole (4) of the distribution plate. A composite spinneret characterized in that the diameter of the composite spinneret (3b) is continuously widened to a diameter greater than the diameter of the composite flow introduction hole (5) of the spinneret plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12779789A JPH02307905A (en) | 1989-05-23 | 1989-05-23 | Spinneret of conjugate spinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12779789A JPH02307905A (en) | 1989-05-23 | 1989-05-23 | Spinneret of conjugate spinning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02307905A true JPH02307905A (en) | 1990-12-21 |
Family
ID=14968915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12779789A Pending JPH02307905A (en) | 1989-05-23 | 1989-05-23 | Spinneret of conjugate spinning |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02307905A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05171508A (en) * | 1991-05-15 | 1993-07-09 | Hoechst Celanese Corp | Method and apparatus for producing two-component filament |
| WO2020095861A1 (en) | 2018-11-06 | 2020-05-14 | 東レ株式会社 | Stretch-processed yarn, fiber product, composite spinneret, and composite fiber production method |
-
1989
- 1989-05-23 JP JP12779789A patent/JPH02307905A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05171508A (en) * | 1991-05-15 | 1993-07-09 | Hoechst Celanese Corp | Method and apparatus for producing two-component filament |
| WO2020095861A1 (en) | 2018-11-06 | 2020-05-14 | 東レ株式会社 | Stretch-processed yarn, fiber product, composite spinneret, and composite fiber production method |
| KR20210087030A (en) | 2018-11-06 | 2021-07-09 | 도레이 카부시키가이샤 | Method of manufacturing stretch-processed yarn, textile products, composite slits and composite fibers |
| EP3879017A4 (en) * | 2018-11-06 | 2023-05-03 | Toray Industries, Inc. | Stretch-processed yarn, fiber product, composite spinneret, and composite fiber production method |
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