JPS6247964B2 - - Google Patents
Info
- Publication number
- JPS6247964B2 JPS6247964B2 JP16337678A JP16337678A JPS6247964B2 JP S6247964 B2 JPS6247964 B2 JP S6247964B2 JP 16337678 A JP16337678 A JP 16337678A JP 16337678 A JP16337678 A JP 16337678A JP S6247964 B2 JPS6247964 B2 JP S6247964B2
- Authority
- JP
- Japan
- Prior art keywords
- spinneret
- nozzle
- polymer
- cylindrical part
- discharge port
- 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
Links
- 239000012510 hollow fiber Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
【発明の詳細な説明】
本発明は、中空糸を製造する為の紡糸口金の製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a spinneret for manufacturing hollow fibers.
従来、中空糸を製造するには、通常第１図ａ，
ｂ，ｃに示す如き形状の紡糸口１，２，３のいず
れかを有する紡糸口金にて紡糸していたが、かか
る紡糸口金で紡糸した中空糸には厚さにムラがあ
つたり、部分的な溶着があつたりした。 Conventionally, in order to manufacture hollow fibers, the steps shown in Fig. 1a,
The fibers were spun using a spinneret having one of spinnerets 1, 2, and 3 shaped as shown in b and c, but the hollow fibers spun with such a spinneret had uneven thickness and some There was some welding.
この為、第２図に示すリング状の紡糸口４の中
央部に、水又はガス吐出口５を設けた紡糸口金を
使用しているが、得られる中空糸の厚さにはやは
りムラが生じているのが現状である。これはこの
紡糸口金の製作に於いて、紡糸口４と水又はガス
吐出口５の同心度を出しにくく、つまり水又はガ
ス吐出口５を有するノズルと紡糸口４をノズル先
端外周に形成するホルダーとを同心に組合せるこ
とが極めて困難で、殆んどの紡糸口金は紡糸口４
と水又はガス吐出口５とは異心に配されているか
らである。 For this reason, a spinneret with a water or gas discharge port 5 in the center of the ring-shaped spinneret 4 shown in Fig. 2 is used, but the thickness of the hollow fibers obtained is still uneven. The current situation is that This is because, in manufacturing this spinneret, it is difficult to achieve concentricity between the spinneret 4 and the water or gas outlet 5. In other words, the nozzle having the water or gas outlet 5 and the holder that forms the spinneret 4 on the outer periphery of the nozzle tip. It is extremely difficult to combine spinnerets concentrically, and most spinnerets are
This is because the water or gas discharge port 5 and the water or gas discharge port 5 are disposed eccentrically.
本発明は、かかる現状に鑑みてなされたもので
あり、紡糸口と水又はガス吐出口の同心度の極め
て高い中空糸用紡糸口金の製造方法を提供せんと
するものである。 The present invention has been made in view of the current situation, and it is an object of the present invention to provide a method for manufacturing a spinneret for hollow fibers in which the spinneret and the water or gas discharge port have extremely high concentricity.
以下本発明による中空糸用紡糸口金の製造方法
の一実施例を第３図乃至第５図によつて説明す
る。 An embodiment of the method for manufacturing a hollow fiber spinneret according to the present invention will be described below with reference to FIGS. 3 to 5.
先ず第３図に示す如く中央部には外方に突出す
る円柱部を設け、その裏面に水又はガス導入用盲
穴６を円柱部と同心同一方向に設け、外周部に一
定間隔を存して複数のポリマー導入口７をを設
け、下面外周をテーパー円錐形状になしたノズル
８を、中央部にポリマー吐出口９を有するホルダ
ー１０の凹部内に収容して、予め該ホルダー１０
内に装入した液洩れ防止用テフロン製パツキン１
１上に載置して、ノズル円錐形部とホルダー凹部
の円錐台形部との間にポリマーが流動する空隙を
設けると共にその円柱部をポリマー吐出口９に挿
通し、ノズル８の水又はガス導入用盲穴６及びポ
リマー導入口７と同じ位置に水又はガス導入用穴
６′及びポリマー導入口７′を有するノズル押え１
２をホルダー１０に螺合してノズル８を固定す
る。尚この際ノズル押え１２の下面中央部に設け
た凹部１２ａに空気洩れ防止用テフロン製パツキ
ン１３を装入する。 First, as shown in Fig. 3, a cylindrical part protruding outward is provided in the central part, and blind holes 6 for introducing water or gas are provided on the back side of the cylindrical part concentrically and in the same direction as the cylindrical part. A nozzle 8 having a plurality of polymer inlet ports 7 and a tapered conical lower surface outer periphery is housed in a recess of a holder 10 having a polymer discharge port 9 in the center.
Teflon gasket 1 to prevent liquid leakage inserted inside
1, a gap is created between the nozzle conical part and the truncated conical part of the holder recess to allow the polymer to flow, and the cylindrical part is inserted into the polymer discharge port 9 to introduce water or gas into the nozzle 8. A nozzle holder 1 having a water or gas introduction hole 6' and a polymer introduction port 7' at the same position as the blind hole 6 and the polymer introduction port 7.
2 to the holder 10 to fix the nozzle 8. At this time, a Teflon packing 13 for preventing air leakage is inserted into a recess 12a provided at the center of the lower surface of the nozzle holder 12.
次に第４図に示す如くノズル８の円柱部中心と
同心に中空形電極１４を配してこれを上昇せし
め、ノズル８の円柱部外周面とポリマー吐出口９
の内周面とを同心に同時に放電加工により仕上げ
て紡糸口９′を得る。 Next, as shown in FIG. 4, a hollow electrode 14 is arranged concentrically with the center of the cylindrical part of the nozzle 8 and raised, and the outer circumferential surface of the cylindrical part of the nozzle 8 and the polymer discharge port 9 are connected to each other.
At the same time, the inner peripheral surface of the spinneret 9' is finished by electric discharge machining concentrically with the inner circumferential surface of the spinneret 9'.
次いで第５図に示す如くノズル８の円柱部中心
と同心円柱形電極１５を配してこれを上昇せし
め、ノズル８の円柱部中央に水又はガス吐出口１
６を放電加工により孔明けして水又はガス導入用
盲穴６を開口連通する。かくして第６図ａ，ｂに
示す如き中空糸用紡糸口金１７が得られる。 Next, as shown in FIG. 5, a cylindrical electrode 15 concentric with the center of the cylindrical portion of the nozzle 8 is arranged and raised, and a water or gas discharge port 1 is placed in the center of the cylindrical portion of the nozzle 8.
6 is drilled by electrical discharge machining to open and communicate the blind hole 6 for introducing water or gas. Thus, a hollow fiber spinneret 17 as shown in FIGS. 6a and 6b is obtained.
かようにして製造された中空糸用紡糸口金１７
は、紡糸口９′と水又はガス吐出口１６がノズル
８とホルダー１０とを組合せ固定した後に紡糸口
が加工されるので、その同心度が極めて高く、従
つてこの中空糸用紡糸口金１７により紡糸される
中空糸はその厚さにムラがなく、また部分的な溶
着も全く起らないものである。 Hollow fiber spinneret 17 manufactured in this way
Since the spinneret 9' and the water or gas discharge port 16 are processed after the nozzle 8 and the holder 10 are combined and fixed, their concentricity is extremely high. The spun hollow fibers have an even thickness and no local welding occurs at all.
尚上記実施例では紡糸口９′が１個の紡糸口金
の場合について説明したが、第７図の如く多数個
の紡糸口９′を有する紡糸口金１８の場合も前記
と同様に作られるものであり、第８図の如く紡糸
口９′の外側にも紡糸口９″を設けて複合の中空糸
を紡糸する紡糸口金１９の場合も前記と同様に作
られるものである。また紡糸口の加工を放電加工
にて述べたが、これに限るものではなく切削加工
でもよいものである。 Incidentally, in the above embodiment, the case where the spinneret 9' is one spinneret has been explained, but a spinneret 18 having a plurality of spinnerets 9' as shown in FIG. 7 can also be made in the same manner as described above. As shown in Fig. 8, a spinneret 19 for spinning a composite hollow fiber by providing a spinneret 9'' on the outside of the spinneret 9' is also manufactured in the same manner as described above. Although electric discharge machining has been described, the present invention is not limited to this, and cutting machining may also be used.
以上詳記した通り本発明による中空糸用紡糸口
金の製造方法によれば、紡糸口と水又はガス吐出
口の同心度が極めて高く、従つて厚さにムラがな
く溶着もしない中空糸を得ることのできる紡糸口
金を簡単に製造できるという優れた効果がある。 As detailed above, according to the method for producing a spinneret for hollow fibers according to the present invention, the concentricity of the spinneret and the water or gas discharge port is extremely high, and therefore, hollow fibers with uniform thickness and no welding can be obtained. This has the excellent effect of making it possible to easily manufacture a spinneret.
第１図ａ，ｂ，ｃは従来の中空糸用紡糸口金に
於ける紡糸口の形状を示す平面図、第２図は同じ
く従来の中空糸用紡糸口金に於ける紡糸口及びガ
ス吐出口を示す平面図、第３図乃至第５図は本発
明による中空糸用紡糸口金の製造方法の工程を示
す縦断面図、第６図は完成した中空糸用紡糸口金
を示すもので、ａはその縦断面図、ｂは前面図、
第７図は多数本の中空糸を紡糸する紡糸口金の縦
断面図、第８図は複合中空糸を紡糸する紡糸口金
の縦断面図である。
６……水又はガス導入用盲穴、７……ポリマー
導入口、８……ノズル、９……ポリマー吐出口、
９′……紡糸口、１０……ホルダー、１４……中
空形電極、１５……円柱形電極、１６……水又は
ガス吐出口、１７……中空糸用紡糸口金。
Figures 1a, b, and c are plan views showing the shape of the spinneret in a conventional hollow fiber spinneret, and Figure 2 is a plan view showing the spinneret and gas discharge port in a conventional hollow fiber spinneret. 3 to 5 are longitudinal cross-sectional views showing the steps of the method for manufacturing a spinneret for hollow fibers according to the present invention, and FIG. 6 shows a completed spinneret for hollow fibers. Longitudinal cross-sectional view, b is the front view,
FIG. 7 is a longitudinal sectional view of a spinneret for spinning a large number of hollow fibers, and FIG. 8 is a longitudinal sectional view of a spinneret for spinning composite hollow fibers. 6...Blind hole for water or gas introduction, 7...Polymer inlet, 8...Nozzle, 9...Polymer discharge port,
9'... Spinneret, 10... Holder, 14... Hollow electrode, 15... Cylindrical electrode, 16... Water or gas discharge port, 17... Spinneret for hollow fiber.
Claims (1)
の裏面に水又はガス導入用盲穴を前記円柱部と同
心同一方向に設け、外周部には複数のポリマー導
入口を設け、下面外周をテーパー円錐形状になし
たノズルを、中央部にポリマー吐出口を有するホ
ルダー凹部内に収容固定して、ノズル円錐形部と
ホルダー凹部の円錐台形部との間にポリマーが流
動する空隙を設けると共にノズルの円柱部をポリ
マー吐出口に挿入し、次にノズルの円柱部中心を
中心としてノズル円柱部外周面とポリマー吐出口
内周面とを同時に加工して紡糸口を形成すること
及び水又はガス導入用盲穴を開口連通することを
特徴とする中空糸用紡糸口金の製造方法。1 A cylindrical part protruding outward is provided in the center, a blind hole for water or gas introduction is provided on the back surface in the same direction and concentric with the cylindrical part, a plurality of polymer inlets are provided in the outer periphery, and a plurality of polymer inlets are provided in the outer periphery of the lower surface. A tapered cone-shaped nozzle is housed and fixed in a holder recess having a polymer discharge port in the center, and a gap is provided between the nozzle cone and the truncated cone of the holder recess to allow the polymer to flow. Inserting the cylindrical part of the nozzle into the polymer discharge port, and then simultaneously processing the outer peripheral surface of the nozzle cylindrical part and the inner peripheral surface of the polymer discharge port around the center of the cylindrical part of the nozzle to form a spinneret, and introducing water or gas. 1. A method for manufacturing a spinneret for hollow fibers, characterized in that a blind hole is opened and communicated with the spinneret.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16337678A JPS5590608A (en) | 1978-12-27 | 1978-12-27 | Manufacture of spinneret for hollow fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16337678A JPS5590608A (en) | 1978-12-27 | 1978-12-27 | Manufacture of spinneret for hollow fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5590608A JPS5590608A (en) | 1980-07-09 |
| JPS6247964B2 true JPS6247964B2 (en) | 1987-10-12 |
Family
ID=15772698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16337678A Granted JPS5590608A (en) | 1978-12-27 | 1978-12-27 | Manufacture of spinneret for hollow fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5590608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01300940A (en) * | 1988-05-31 | 1989-12-05 | Olympus Optical Co Ltd | Ultrasonic endoscope |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57106708A (en) * | 1980-12-17 | 1982-07-02 | Tanaka Kikinzoku Kogyo Kk | Spinneret for preparing hollow fiber of modified cross section |
| US4941812A (en) * | 1988-05-10 | 1990-07-17 | E. I. Du Pont De Nemours And Company | Spinneret for production of a hollow filament within a hollow filament composite fiber having spacing means |
| FR2641710B1 (en) * | 1988-12-22 | 1991-03-29 | Lyonnaise Eaux | SECTOR FOR THE PRODUCTION OF MEMBRANES IN AN ORGANIC MATERIAL COMPRISING AT LEAST ONE LONGITUDINAL CHANNEL |
| US5320512A (en) * | 1992-09-24 | 1994-06-14 | E. I. Du Pont De Nemours And Company | Apparatus for spinning multicomponent hollow fibers |
| DE10211052A1 (en) | 2002-03-13 | 2003-10-23 | Fresenius Medical Care De Gmbh | Hollow fiber spinning nozzle |
| CN102242411A (en) * | 2011-06-20 | 2011-11-16 | 常州市美纤膜技术有限公司 | Integrated hollow fiber spinning plate |
| US20220193956A1 (en) * | 2019-03-29 | 2022-06-23 | Dow Global Technologies Llc | Die Assembly for Producing Fluid-Filled Pellets |
| EP3842132A1 (en) | 2019-12-23 | 2021-06-30 | Gambro Lundia AB | Spinneret |
-
1978
- 1978-12-27 JP JP16337678A patent/JPS5590608A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01300940A (en) * | 1988-05-31 | 1989-12-05 | Olympus Optical Co Ltd | Ultrasonic endoscope |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5590608A (en) | 1980-07-09 |
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