JPH0663482A - Resin coating die - Google Patents
Resin coating dieInfo
- Publication number
- JPH0663482A JPH0663482A JP4216968A JP21696892A JPH0663482A JP H0663482 A JPH0663482 A JP H0663482A JP 4216968 A JP4216968 A JP 4216968A JP 21696892 A JP21696892 A JP 21696892A JP H0663482 A JPH0663482 A JP H0663482A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- die
- core wire
- coating die
- tape core
- 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.)
- Granted
Links
Landscapes
- Coating Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、光ファイバテープ心
線（以下、テープ心線と言う。）を製造するための樹脂
被覆用ダイスに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin coating die for producing an optical fiber ribbon (hereinafter referred to as a tape ribbon).
【０００２】[0002]
【従来の技術】テープ心線の製造方法には、予め製造さ
れた光ファイバ素線（以下、素線と言う。）を複数本整
列状態に配列させて、樹脂被覆用ダイスに供給し、この
ダイスにおいて紫外線硬化型樹脂などの樹脂液を塗布
し、テープ状に一括被覆し、樹脂液を硬化させる方法が
ある。2. Description of the Related Art In a method for manufacturing a tape core wire, a plurality of pre-manufactured optical fiber wires (hereinafter referred to as "wires") are arranged in an aligned state and supplied to a resin coating die. There is a method in which a resin liquid such as an ultraviolet curable resin is applied in a die, and is collectively covered in a tape shape to cure the resin liquid.
【０００３】この製造方法における樹脂被覆用ダイスと
しては、図８に示すように、素線１…を複数本整列状態
で送り込むニップル部２と、このニップル部２に連通
し、硬化性樹脂液を貯留して素線１…に樹脂液を塗する
樹脂溜部３と、この樹脂溜部３に連通し、余分の樹脂液
を除去し、その形状を整え、素線１…を樹脂液で一括被
覆するようにするダイス部４を具えたものが一般的に用
いられている。As a resin coating die in this manufacturing method, as shown in FIG. 8, a nipple portion 2 for feeding a plurality of strands 1 ... The resin reservoir 3 for storing and applying the resin liquid to the strands 1 ... Is communicated with the resin reservoir 3, excess resin liquid is removed, the shape is adjusted, and the strands 1 ... A die having a die portion 4 to be coated is generally used.
【０００４】そして、上記樹脂溜部３とダイス部４とで
コート部５が構成されている。また、樹脂溜部３の上部
には樹脂供給孔６が形成され、これを介して樹脂溜部３
に樹脂液が圧送されるようになっている。The resin reservoir portion 3 and the die portion 4 constitute a coat portion 5. In addition, a resin supply hole 6 is formed in the upper portion of the resin reservoir 3, and the resin reservoir 3 is provided through the resin supply hole 6.
The resin liquid is sent under pressure.
【０００５】ところで、このような樹脂被覆用ダイスを
用いるテープ心線の製造においては、ニップル部２から
素線１…をダイス内に送り込む際に、同時に空気が同伴
され、この空気が樹脂液中に取り込まれ気泡となり、こ
れがそのまま被覆されるため、硬化後の被覆材の中にも
気泡が存在することになる。Incidentally, in the manufacture of a tape core wire using such a resin coating die, air is entrained at the same time when the strands 1 ... Are fed into the die from the nipple portion 2, and this air is contained in the resin liquid. The bubbles are taken in by the particles and are covered as they are, so that the bubbles also exist in the coating material after curing.
【０００６】このため、テープ心線の外観不良、温度特
性劣化、側圧特性劣化の原因となることがあった。そし
て、この空気の同伴は、素線径が細くなり、素線の走行
速度が大きくなるにつれて、激しくなる傾向がある。As a result, the appearance of the tape core wire, the deterioration of the temperature characteristics, and the deterioration of the lateral pressure characteristics are sometimes caused. The entrainment of air tends to become more intense as the wire diameter becomes smaller and the running speed of the wire increases.
【０００７】一方、樹脂被覆用ダイスの樹脂溜部３内
は、樹脂液が圧入されているので、素線１…の配列状態
が微かでもずれて、素線１…間に隙間が生ずるとその部
分に樹脂液が多く流れ込み、得られるテープ心線の形状
が図９に示すように、被覆材７の一部７ａが部分的に膨
らんだものとなって、形状の劣化が生じる不都合もあ
る。On the other hand, since the resin liquid is press-fitted into the resin reservoir 3 of the resin coating die, even if the arrangement state of the wires 1 is slightly deviated and a gap is generated between the wires 1 ,. A large amount of the resin liquid flows into the portion, and the shape of the obtained tape core wire is partially bulged as shown in FIG.
【０００８】[0008]
【発明が解決しようとする課題】よって、この発明の課
題は、テープ心線の被覆材中に気泡が存在せず、かつ形
状の劣化がないテープ心線を製造することができる樹脂
被覆用ダイスを得ることにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a resin coating die capable of producing a tape core wire in which there are no bubbles in the coating material for the tape core wire and the shape of the tape core wire is not deteriorated. Is to get.
【０００９】[0009]
【課題を解決するための手段】かかる課題は、ニップル
部と樹脂溜部との間に脱気部を形成し、樹脂溜部とダイ
ス部とから構成されるコート部を直列に２以上設けるこ
とで解決できる。This problem is to form a deaeration part between the nipple part and the resin reservoir part, and to provide two or more coat parts consisting of the resin reservoir part and the die part in series. Can be solved with.
【００１０】図１は、この発明の樹脂被覆用ダイスの一
例を示すもので、図中符号１１はニップル部であり、こ
のニップル部１１は、複数の素線１…を整列状態でダイ
ス内に案内する断面形状が矩形の空洞であって、その幅
は素線本数と素線径との積よりもわずかに大きく、その
高さは素線径よりわずかに大きくなっている。FIG. 1 shows an example of a resin coating die of the present invention. In the figure, reference numeral 11 is a nipple portion, and the nipple portion 11 has a plurality of strands 1 ... It is a hollow cavity having a rectangular cross section to be guided, and its width is slightly larger than the product of the number of wires and the wire diameter, and its height is slightly larger than the wire diameter.
【００１１】このニップル部１１は、脱気部１２に連通
している。脱気部１２は、比較的大きな体積を有する空
間であって、その上部には排気孔１３が形成され、この
排気孔１３には図示しない排気装置からの排気パイプ１
４が接続され、脱気部１２内が２０〜１５０トール程度
に減圧されるようになっている。そして、この脱気部１
２は、ニップル部１１とほぼ同様の形状を有する連通部
１５を介して、第１コート部１６に連通している。The nipple portion 11 communicates with the degassing portion 12. The degassing portion 12 is a space having a relatively large volume, and an exhaust hole 13 is formed in the upper portion thereof, and the exhaust pipe 1 from an exhaust device (not shown) is formed in the exhaust hole 13.
4 is connected, and the inside of the deaerator 12 is depressurized to about 20 to 150 Torr. And this deaeration unit 1
2 communicates with the first coat portion 16 via a communication portion 15 having a shape similar to that of the nipple portion 11.
【００１２】第１コート部１６は、第１樹脂溜部１７と
第１ダイス部１８とから構成されている。第１樹脂溜部
１７は、テープ心線の被覆材となる紫外線硬化型樹脂な
どの樹脂液を貯留するとともに、この樹脂液とここに走
行する素線１…とを接触せしめて、これを塗布するため
のものであり、比較的大きな体積を有する空間である。
この第１樹脂溜部１７の上部には、樹脂供給孔１９が形
成され、この樹脂供給孔１９には図示しない樹脂液圧送
装置からの圧送パイプ２０が接続され、樹脂液が０．２
〜５ｋｇ／ｃｍ2 の圧力で第１樹脂溜部１７に供給され
るようになっている。The first coat section 16 is composed of a first resin reservoir section 17 and a first die section 18. The first resin reservoir 17 stores a resin liquid such as an ultraviolet curable resin that serves as a coating material for the tape core wire, and contacts the resin liquid with the strands 1 ... Is a space having a relatively large volume.
A resin supply hole 19 is formed in the upper part of the first resin reservoir 17, and a pressure supply pipe 20 from a resin liquid pressure supply device (not shown) is connected to the resin supply hole 19 so that the resin liquid is supplied to
The pressure is supplied to the first resin reservoir 17 at a pressure of ˜5 kg / cm 2 .
【００１３】また、第１ダイス部１８は、素線１…表面
に塗布された樹脂液の塗布量、塗布部位を規定するもの
で、ここでは、図２に示すように、複数の素線１…の間
の凹部２１…に樹脂液２２を充填することを主な目的と
し、その寸法は、その高さが素線径とほぼ同じに、幅が
素線本数と素線径との積にほぼ同じとなっている。The first die portion 18 defines the application amount of the resin liquid applied to the surface of the strands 1 ... and the application site. Here, as shown in FIG. The main purpose is to fill the resin liquid 22 into the recessed portions 21 between the two. The dimensions are as follows: the height is almost the same as the strand diameter, and the width is the product of the number of strands and the strand diameter. It is almost the same.
【００１４】この第１コート部１６の次段にはこれに連
続して第２コート部２３が設けられている。この第２コ
ート部２３は、第１コート部１６と同様に第２樹脂溜部
２４および第２コート部２５から構成され、第２樹脂溜
部２４の上部には同様に樹脂供給孔２６が形成され、第
１樹脂溜部１７と同様の構造となっている。第２ダイス
部２５は、一括被覆された被覆材の外形形状、寸法を規
定し、図３に示すように、所定の厚みの被覆材２７が素
線１…に被覆されるようにするものであり、第１ダイス
部１８よりも若干大きな寸法となっている。第２ダイス
部２５の後端は樹脂被覆用ダイスの後面に開口し、ここ
から樹脂液で一括被覆された素線群１…が導出されるよ
うになっている。A second coat portion 23 is provided next to the first coat portion 16 in a continuous manner. The second coat portion 23 is composed of a second resin reservoir portion 24 and a second coat portion 25 like the first coat portion 16, and a resin supply hole 26 is similarly formed above the second resin reservoir portion 24. The structure is similar to that of the first resin reservoir 17. The second die portion 25 defines the outer shape and size of the covering material collectively covered, and as shown in FIG. 3, the covering material 27 having a predetermined thickness is covered on the wires 1. The size is slightly larger than that of the first die portion 18. The rear end of the second die portion 25 is opened to the rear surface of the resin coating die, and the wire group 1 ... Collectively coated with the resin liquid is led out from this.
【００１５】このような構造の樹脂被覆用ダイスを用い
てテープ心線を製造するには、所定の本数の素線１…を
整列状態に配列してダイス前面のニップル部１１から内
部に送り込む。脱気部１２は、上述の常時に２０〜１５
０トール程度に減圧されているので、素線１…と同伴し
て巻き込まれる空気は、この脱気部１２からダイス外に
排出される。このため、脱気部１２から第１コート部１
６に移動する素線１…は、同伴空気が極めて少ない状態
となって、第１樹脂溜部１７に送られることになる。In order to manufacture a tape core wire using the resin coating die having such a structure, a predetermined number of strands 1 ... Are arranged in an aligned state and fed into the inside from the nipple portion 11 on the front surface of the die. The degassing section 12 is always 20 to 15 as described above.
Since the pressure is reduced to about 0 Torr, the air entrained with the wires 1 ... Is discharged from the degassing unit 12 to the outside of the die. Therefore, the deaerator 12 to the first coat unit 1
The wires 1 moving to 6 are sent to the first resin reservoir 17 in a state in which the amount of entrained air is extremely small.
【００１６】第１コート部１６では、図２に示すように
各素線１…間の主に凹部２１…に樹脂液２２が塗布、充
填され、この状態で第２コート部２３に送られる。第２
コート部２３では、全体に樹脂液が塗布され、所定の厚
みの被覆材が形成される。ついで、ダイスから送り出さ
れた素線群１…は紫外線照射装置などの硬化装置に送ら
れ、樹脂液がここで硬化され、図４に示すようなテープ
心線となる。In the first coat portion 16, as shown in FIG. 2, the resin liquid 22 is applied and filled mainly in the recesses 21 between the strands 1 ... And is sent to the second coat portion 23 in this state. Second
In the coat part 23, the resin liquid is applied to the whole to form a covering material having a predetermined thickness. Then, the strand group 1 ... Sent from the die is sent to a curing device such as an ultraviolet irradiating device, where the resin liquid is cured to form a tape core wire as shown in FIG.
【００１７】このような樹脂被覆用ダイスを用いること
により、空気の巻き込みによる被覆材２７中の気泡の発
生はほとんどなくなる。また、第１コート部１６におい
て各素線１…間の凹部２１…に予め樹脂液が充填されて
いるので、第２コート部２３においては上記凹部２１…
には樹脂液が流れ込むことがなく、部分的に樹脂液が多
量に流れて一部が膨らむことがなく、外観形状の良好な
ものが製造できる。By using such a resin coating die, air bubbles are hardly generated in the coating material 27 due to the entrainment of air. Further, since the resin liquid is previously filled in the concave portions 21 between the strands 1 in the first coat portion 16, the concave portions 21 ... In the second coat portion 23.
The resin liquid does not flow into the container, and a large amount of the resin liquid does not partially flow and part of the resin liquid does not swell, and a product having a good appearance can be manufactured.
【００１８】図４ないし図６は、図１に示すような樹脂
被覆用ダイスを用いて製造されたテープ心線と従来のダ
イスを用いて製造されたテープ心線との特性を示したも
のである。樹脂液には粘度２０００ｃｐｓ程度のウレタ
ンアクリレート系紫外線硬化型樹脂を用い、これを第１
および第２樹脂溜部１７，２４に約１ｋｇ／ｃｍ2 の圧
力で圧入した。脱気部１２内を常時８０トールに減圧し
た。図４は温度特性を、図５は側圧特性を、図６は平板
側圧特性を示し、伝送損失変化は波長１．５５μｍでの
測定値で表わしてある。FIGS. 4 to 6 show characteristics of a tape core wire manufactured by using the resin coating die shown in FIG. 1 and a tape core wire manufactured by using a conventional die. is there. A urethane acrylate-based UV curable resin with a viscosity of about 2000 cps is used as the resin liquid.
And it was pressed into the second resin reservoirs 17 and 24 at a pressure of about 1 kg / cm 2 . The pressure inside the degassing section 12 was constantly reduced to 80 Torr. FIG. 4 shows the temperature characteristics, FIG. 5 shows the lateral pressure characteristics, and FIG. 6 shows the flat plate lateral pressure characteristics. The change in transmission loss is represented by the measured value at a wavelength of 1.55 μm.
【００１９】これらのグラフから明らかなように、本発
明の樹脂被覆ダイスによって得られたテープ心線は優れ
た特性を持つことがわかる。As is apparent from these graphs, it is understood that the tape core wire obtained by the resin-coated die of the present invention has excellent characteristics.
【００２０】図７は、本発明の樹脂被覆用ダイスの他の
例を示すもので、先の例のものと異なるところは、第１
コート部１６の樹脂供給孔１９を第２コート部２３のそ
れと兼用としたものである。FIG. 7 shows another example of the resin coating die of the present invention. The difference from the previous example is the first example.
The resin supply hole 19 of the coat part 16 is also used as that of the second coat part 23.
【００２１】[0021]
【発明の効果】以上説明したように、本発明の樹脂被覆
用ダイスは、ニップル部と樹脂溜部との間に脱気部を形
成し、樹脂溜部とダイス部とから構成されるコート部を
直列に２以上設けたものであるので、テープ心線の被覆
材中に気泡が存在せず、しかも外観形状の劣化がなく、
伝送特性の良好なテープ心線を製造できる。As described above, in the resin coating die of the present invention, the degassing portion is formed between the nipple portion and the resin reservoir portion, and the coating portion is composed of the resin reservoir portion and the die portion. Since two or more are provided in series, there are no bubbles in the coating material of the tape core wire, and there is no deterioration in the external shape.
It is possible to manufacture a tape core wire having excellent transmission characteristics.
【図１】 本発明の樹脂被覆用ダイスの一例を示す概略
断面図である。FIG. 1 is a schematic sectional view showing an example of a resin coating die of the present invention.
【図２】 本発明の樹脂被覆用ダイスでの第１コート部
での樹脂液の被覆状態を示す断面図である。FIG. 2 is a cross-sectional view showing a coating state of a resin liquid in a first coating portion in the resin coating die of the present invention.
【図３】 本発明で得られたテープ心線の一例を示す断
面図である。FIG. 3 is a cross-sectional view showing an example of a tape core wire obtained by the present invention.
【図４】 本発明で得られたテープ心線の温度特性を示
すグラフである。FIG. 4 is a graph showing temperature characteristics of the tape core wire obtained in the present invention.
【図５】 本発明で得られたテープ心線の側圧特性を示
すグラフである。FIG. 5 is a graph showing the lateral pressure characteristics of the tape core wire obtained in the present invention.
【図６】 本発明で得られたテープ心線の平板側圧特性
を示すグラフである。FIG. 6 is a graph showing flat plate lateral pressure characteristics of the tape core wire obtained in the present invention.
【図７】 本発明の樹脂被覆用ダイスの他の例を示す概
略断面図である。FIG. 7 is a schematic cross-sectional view showing another example of the resin coating die of the present invention.
【図８】 従来の樹脂被覆用ダイスを示す概略断面図で
ある。FIG. 8 is a schematic sectional view showing a conventional resin coating die.
【図９】 従来の樹脂被覆用ダイスで得られたテープ心
線の断面図である。FIG. 9 is a cross-sectional view of a tape core wire obtained by a conventional resin coating die.
１…素線、１１…ニップル部、１２…脱気部、１６…第
１コート部、１７…第１樹脂溜部、１８…第１ダイス
部、２３…第２コート部、２４…第２樹脂溜部、２５…
第２ダイス部DESCRIPTION OF SYMBOLS 1 ... Elemental wire, 11 ... Nipple part, 12 ... Deaeration part, 16 ... First coat part, 17 ... First resin reservoir part, 18 ... First die part, 23 ... Second coat part, 24 ... Second resin Reservoir, 25 ...
2nd die
───────────────────────────────────────────────────── フロントページの続き (72)発明者 荒木 真治 千葉県佐倉市六崎1440番地 藤倉電線株式 会社佐倉工場内 (72)発明者 宮本 末広 千葉県佐倉市六崎1440番地 藤倉電線株式 会社佐倉工場内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Shinji Araki, 1440 Rokuzaki, Sakura City, Chiba Prefecture, Sakura Factory, Fujikura Electric Wire Co., Ltd. (72) Suehiro Miyamoto, 1440, Rosaki, Sakura City, Chiba Prefecture
Claims (2)
し、複数本の光ファイバ素線を整列状態でニップル部よ
り挿入し、樹脂溜部で硬化性樹脂液を塗布し、ダイス部
でテープ状に一括被覆して導出する光ファイバテープ心
線製造のための樹脂被覆用ダイスにおいて、 ニップル部と樹脂溜部との間に脱気部を形成し、樹脂溜
部とダイス部とから構成されるコート部を直列に２以上
設けたことを特徴とする樹脂被覆用ダイス。1. A nipple portion, a resin reservoir portion, and a die portion. A plurality of optical fiber wires are inserted in an aligned state from the nipple portion, a curable resin liquid is applied in the resin reservoir portion, and the die portion is used. In a resin coating die for manufacturing optical fiber ribbons that are collectively coated and led in a tape shape, a degassing portion is formed between the nipple portion and the resin reservoir portion, and consists of a resin reservoir portion and a die portion. The resin coating die is characterized in that two or more coating portions are provided in series.
て光ファイバテープ心線を製造することを特徴とする光
ファイバテープ心線の製法。2. A method for producing an optical fiber ribbon, which comprises producing an optical fiber ribbon using the resin coating die according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04216968A JP3121927B2 (en) | 1992-08-14 | 1992-08-14 | Dies for resin coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04216968A JP3121927B2 (en) | 1992-08-14 | 1992-08-14 | Dies for resin coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0663482A true JPH0663482A (en) | 1994-03-08 |
| JP3121927B2 JP3121927B2 (en) | 2001-01-09 |
Family
ID=16696745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04216968A Expired - Lifetime JP3121927B2 (en) | 1992-08-14 | 1992-08-14 | Dies for resin coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3121927B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6355102B2 (en) | 1998-07-14 | 2002-03-12 | Alcatel | Coating applicator for producing optical fiber ribbon with improved geometry |
| JP2016180643A (en) * | 2015-03-24 | 2016-10-13 | 住友電気工業株式会社 | Method of inspecting ultraviolet-curing resin for optical fiber and method of manufacturing optical fiber |
-
1992
- 1992-08-14 JP JP04216968A patent/JP3121927B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6355102B2 (en) | 1998-07-14 | 2002-03-12 | Alcatel | Coating applicator for producing optical fiber ribbon with improved geometry |
| JP2016180643A (en) * | 2015-03-24 | 2016-10-13 | 住友電気工業株式会社 | Method of inspecting ultraviolet-curing resin for optical fiber and method of manufacturing optical fiber |
| US10852222B2 (en) | 2015-03-24 | 2020-12-01 | Sumitomo Electric Industries, Ltd. | Method of inspecting ultraviolet curable resin for optical fiber and method of manufacturing optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3121927B2 (en) | 2001-01-09 |
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