JPS59201322A - Multilayer extrusion coating method - Google Patents
Multilayer extrusion coating methodInfo
- Publication number
- JPS59201322A JPS59201322A JP58077102A JP7710283A JPS59201322A JP S59201322 A JPS59201322 A JP S59201322A JP 58077102 A JP58077102 A JP 58077102A JP 7710283 A JP7710283 A JP 7710283A JP S59201322 A JPS59201322 A JP S59201322A
- Authority
- JP
- Japan
- Prior art keywords
- coating method
- extrusion coating
- core wire
- multilayer extrusion
- present
- 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
- 238000000034 method Methods 0.000 title claims description 8
- 238000007765 extrusion coating Methods 0.000 title claims description 7
- 238000001125 extrusion Methods 0.000 claims description 10
- 210000002445 nipple Anatomy 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229920005992 thermoplastic resin Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（発明の技術分野）
本発明は、電線、ケーブル等の導体芯線上にポリエチレ
ン等の熱可塑性樹脂を複数層押出被榎する方法に関する
。DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a method for extruding multiple layers of thermoplastic resin such as polyethylene onto a conductor core wire such as an electric wire or cable.
（発明の技術的背景とその問題点）
従来、この種の多層押出被覆方法としては、クロスヘッ
ドを備えた通常の押出装置を２台以上タンデムに配列し
、導体芯線上に順次樹脂を被覆する方法や２台以上の混
線装置と１台のプモンクｐスヘッドとを使用して導体芯
線上に同時に多層押出被覆をする方法等が知られている
。しかしながら、これらの方法はいずれも偏肉調整に多
大な時間を要し、しかも設備が相当高価であるという難
点がある。(Technical background of the invention and its problems) Conventionally, this type of multilayer extrusion coating method involves arranging two or more ordinary extrusion devices equipped with crossheads in tandem and sequentially coating the conductor core wire with resin. There are known methods for simultaneously applying multilayer extrusion coating onto a conductor core wire using two or more cross-talk devices and one Pmonch PS head. However, all of these methods have drawbacks in that it takes a great deal of time to adjust the unevenness in thickness, and the equipment is quite expensive.
（発明の目的）
本発明は、上記の難点を解消すべくなされたもので、偏
肉調整が容易で、かつ安価な設備を使用し得る多層押出
被覆方法を提供することを目的とする。(Object of the Invention) The present invention was made to solve the above-mentioned difficulties, and an object of the present invention is to provide a multilayer extrusion coating method that allows easy adjustment of uneven thickness and uses inexpensive equipment.
（発明の概要）
すなわち、本発明は走行する芯線を、溶融した樹脂が連
続供給される、１個又は複数個の紋５＝ップルと、通常
の押出装置とに挿通させるようにすることによって上記
目的を達成するものでめる〇本発明において紋Ｖ＝ツプ
ルは紋り径が適切に選定されて通常の押出装置の前方又
は後方に配置され、簡易押出機で連続的に溶融樹脂が供
給されることにより、挿通する芯線上に薄く均一な被覆
を施すものである。この紋りニップルを使用することに
よって所謂スウェル現象により厚さの薄い均−な被膜を
設けることができ、偏肉調整時間を大幅に短縮し得る。(Summary of the invention) That is, the present invention achieves the above-mentioned effect by passing a running core wire through one or more pulls to which molten resin is continuously supplied and a normal extrusion device. 〇 In the present invention, the crest V = tuple is placed in front or behind a normal extrusion device with the diameter of the crest appropriately selected, and the molten resin is continuously supplied with a simple extruder. By doing so, a thin and uniform coating is applied to the core wire to be inserted. By using this embossed nipple, it is possible to provide a thin and uniform coating due to the so-called swell phenomenon, and the time for adjusting uneven thickness can be significantly shortened.
（発明の実施例） 以下、本発明の実施例を図に基き説明する。(Example of the invention) Embodiments of the present invention will be described below with reference to the drawings.
同社本発明の一実施例を示す概略図である０図において
、ｌは電線、ケーブル等の導体芯線を示し、図中、右方
に走行している。２は上記紋Ｖ＝ップル、３は通常の押
出装置をそれぞれ示している。紋りニップル２の後部に
、簡易押出機４によりポリエチレン、ポリ塩化ビニル等
の押出可能な熱可塑性樹脂５が溶融状態でチューブ６を
経て連続供給される。この供給樹脂を一定の溶融状態に
維持させるために、紋りニップル周壁に適宜ヒータ７が
配設されている。例えば、溶融樹脂が低密度ポリエチレ
ンの場合約１１０℃、高密度ポリエチレンの場合約１３
０℃位に加熱する必要がある。In Figure 0, which is a schematic diagram showing an embodiment of the present invention, l indicates a conductor core wire such as an electric wire or cable, which runs to the right in the figure. Reference numeral 2 indicates the above-mentioned pattern V=puple, and reference numeral 3 indicates a normal extrusion device. An extrudable thermoplastic resin 5 such as polyethylene or polyvinyl chloride is continuously supplied in a molten state through a tube 6 to the rear part of the embossed nipple 2 by a simple extruder 4 . In order to maintain the supplied resin in a constant molten state, a heater 7 is appropriately disposed on the peripheral wall of the fringe nipple. For example, when the molten resin is low density polyethylene, it is about 110°C, and when it is high density polyethylene, it is about 13°C.
It is necessary to heat it to around 0°C.
このような構成において、導体芯線１を、紋りニップル
２、通常の押出装置３に順次挿通させることにより複数
層の押出被覆を行うことができる。In such a configuration, extrusion coating of multiple layers can be performed by sequentially inserting the conductor core wire 1 through the fringe nipple 2 and the ordinary extrusion device 3.
紋りニップル２は１個又は複数個を、１台の通常の押出
装置３の前方又は後方に配置される。なお、通常の押出
装置３とは周知の混線装置とクロスヘッドとからなるも
ので、図にはクロスヘッドのみを示している。簡易押出
機４は混練装置によって構成されている。また紋すニツ
ブル２としてはその内部容積の大きいもの、例えば軸方
向に長いものが樹脂品質を維持させる点でも望ましい。One or more embossed nipples 2 are arranged in front or behind a conventional extrusion device 3. Note that the normal extrusion device 3 is composed of a well-known crosstalk device and a crosshead, and only the crosshead is shown in the figure. The simple extruder 4 is composed of a kneading device. Further, it is preferable that the nibble 2 has a large internal volume, for example, one that is long in the axial direction, in order to maintain resin quality.
（発明の効果）
以上、本発明の方法によれば、紋りニップルと通常の押
出装置とを組合わせて多層押出をするものであるから、
偏肉調整の時間を大幅に短縮でき、均一な被覆層を容易
に得ることができる。また、紋りニップ・ルは樹脂を適
宜溶融状態に維持するだけの構成であるから、安価な設
備によって多層押出被覆を行い得る。(Effects of the Invention) As described above, according to the method of the present invention, multi-layer extrusion is performed by combining a patterned nipple and a normal extrusion device.
The time for adjusting thickness unevenness can be significantly shortened, and a uniform coating layer can be easily obtained. Furthermore, since the embossed nipple is constructed only to maintain the resin in a suitably molten state, multilayer extrusion coating can be performed using inexpensive equipment.
図面は本発明の一実施例の説明図でめる。 The drawings are explanatory diagrams of one embodiment of the present invention.
Claims (1)
にめた９、走行する芯線を、溶融した熱可塑性樹脂が連
続供給される、１個又は複数個の紋りニップルと通常の
押出装置とに挿通させるようにすることを特徴とする多
層押出被覆方法。1. In order to extrude multiple layers of thermoplastic resin onto the conductor core wire, 9. The running core wire is connected to one or more embossed nipples to which molten thermoplastic resin is continuously supplied and conventional extrusion. 1. A multilayer extrusion coating method, characterized by passing the coating through a device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58077102A JPS59201322A (en) | 1983-04-29 | 1983-04-29 | Multilayer extrusion coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58077102A JPS59201322A (en) | 1983-04-29 | 1983-04-29 | Multilayer extrusion coating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59201322A true JPS59201322A (en) | 1984-11-14 |
Family
ID=13624420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58077102A Pending JPS59201322A (en) | 1983-04-29 | 1983-04-29 | Multilayer extrusion coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59201322A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5350483A (en) * | 1976-10-18 | 1978-05-08 | Nokia Oy Ab | Method of manufacturing plastic covered highhvoltage cagle |
-
1983
- 1983-04-29 JP JP58077102A patent/JPS59201322A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5350483A (en) * | 1976-10-18 | 1978-05-08 | Nokia Oy Ab | Method of manufacturing plastic covered highhvoltage cagle |
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