JPS6172513A - Manufacture of foam insulator and its sizing die - Google Patents

Manufacture of foam insulator and its sizing die

Info

Publication number
JPS6172513A
JPS6172513A JP59194794A JP19479484A JPS6172513A JP S6172513 A JPS6172513 A JP S6172513A JP 59194794 A JP59194794 A JP 59194794A JP 19479484 A JP19479484 A JP 19479484A JP S6172513 A JPS6172513 A JP S6172513A
Authority
JP
Japan
Prior art keywords
sizing die
insulator
sizing
die
core member
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
Application number
JP59194794A
Other languages
Japanese (ja)
Inventor
Fumio Suzuki
文雄 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP59194794A priority Critical patent/JPS6172513A/en
Publication of JPS6172513A publication Critical patent/JPS6172513A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92409—Die; Nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)

Abstract

PURPOSE:To obtain the product with small eccentricity and excellent quality, regulating a sizing die in very short time easily by achieving the position- regulation of the sizing die, while detecting the surface condition of a foam insulator, after said insulator has been extruded on a core member and has covered said core member. CONSTITUTION:For instance, a core member and the high grade foam insulator 5 enclosing the core member are extruded from an extruding device 1 and are introduced into the cooled sizing die 2 with a cooling medium path 3. The distance between the sizing die 2 and the extruding device 1, and the position of the central axis of the sizing die 2 are regulated such that while detecting the running friction of said insulator 5 at two places or more in circumferential direction by the sensor 4 fitted to the rear portion 2' of the sizing die, the difference therebetween is caused to become small and its value is caused to become correct. Thus, the objective product is obtained.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は発泡絶縁体の製造方法およびその装置の改良に
係り、特に肉厚大物での低発泡体や高発泡体の改善され
た押出被覆方法およびそれに用いる作業性の改善された
サイジングダイに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to improvements in the manufacturing method and equipment for foamed insulators, and in particular to improved extrusion coating of low-foam and high-foam products in large-walled products. The present invention relates to a method and a sizing die with improved workability used therein.

〔従来の技術〕[Conventional technology]

従来心材上にポリエチレン等の発泡絶縁体を被覆する場
合、まず押出装置によって押出被覆し、発泡と同時に表
面をサイジングダイで成形するととくより均一な表面を
有する品質のすぐれた発泡絶縁体を得るべく製造がおこ
なわれている。Conventionally, when covering a core material with a foamed insulator such as polyethylene, it is first carried out by extrusion using an extrusion device, and at the same time the surface is formed using a sizing die, in order to obtain a foamed insulator of excellent quality with a more uniform surface. Manufacturing is underway.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら上記のサイジングダイには種々技術的問題
がある。例えば発泡絶縁体を過度にサイジングすると発
泡絶縁体の表面がサイジングダイの内面でこすられる時
の摩擦抵抗によって発泡絶縁体の気泡が破れ、気泡が隣
接したものと連続し、俗にいう巣が発生する。この問題
を解決するため、本発明者らはサイジングダイの内面を
摩擦係数の少ないテフロン等の材料でコーティングする
方法を発明し、既に特願昭５０−３２９７１号として出
願した。しかし、この方法を用いても限度があシ、過度
な摩擦はさけ適度な摩擦によって成形することが肝要で
ある。However, the above sizing die has various technical problems. For example, if a foamed insulation is sized excessively, the frictional resistance when the surface of the foamed insulation is rubbed against the inner surface of the sizing die causes the bubbles in the foamed insulation to burst and connect with adjacent ones, creating what is commonly called a cavity. do. In order to solve this problem, the present inventors invented a method of coating the inner surface of the sizing die with a material such as Teflon, which has a low coefficient of friction, and has already filed an application as Japanese Patent Application No. 32,971/1983. However, even if this method is used, there is a limit, and it is important to avoid excessive friction and to form with moderate friction.

従来のサイジングダイは通常冷却媒体で冷却しながらサ
イジングする必要上熱伝導性のよい金属製の円筒がよく
用いられるが、サイジングダイ内は目視できないため発
泡絶縁体が適度な摩擦によって成形されているかは知る
由もない。Conventional sizing dies usually use a metal cylinder with good thermal conductivity because sizing must be performed while cooling with a cooling medium, but since the inside of the sizing die cannot be seen visually, it is necessary to perform sizing while being cooled with a cooling medium. There's no way to know.

一般に適度な摩擦で成形するためＫはサイジングダイの
内径の選び方、押出装置とサイジングダイとの離隔距離
の決定が大切であシ、このうち特に後者は実際に発泡絶
縁体を押出し、その発泡状態を目視で観察しながら最も
最良なサイジング成形がなされる位置に調整しているが
、この準備作業時間、材料等かな）ａスが多い。In general, since molding is performed with moderate friction, it is important to select the inner diameter of the sizing die and determine the separation distance between the extrusion device and the sizing die.The latter is especially important when it comes to actually extruding the foamed insulator and its foaming state. While visually observing the sizing process, adjustments are made to the position that will give the best sizing, but this process requires a lot of preparation time, materials, etc.).

、１　　　また、サイジングダイの中心軸が発泡絶縁体
の中心軸と合ってない場合は、発泡絶縁体表面がスムー
ズにならないとか、内部に巣が発生するとかいう問題が
生じるが、これはサイジングダイの傾きによって発泡絶
縁体表面の円周方向のサイジングの程度が均一になって
いないためであシ、このようなことを無くすためにも、
サイジングダイの中心軸調整にはかなりの時間と材料を
費やしている。, 1 Also, if the center axis of the sizing die is not aligned with the center axis of the foam insulator, problems such as the surface of the foam insulator not being smooth or the formation of cavities inside will occur. This is because the degree of sizing in the circumferential direction of the foam insulator surface is not uniform due to the inclination, and in order to eliminate this problem,
A considerable amount of time and materials are spent adjusting the center axis of the sizing die.

特に高発泡体押出しに個有の問題であるが、サイジング
ダイに入る前の表面は、通常凹凸の激しい不均一なもの
であり、これがサイジングダイの位置調整を極度に困難
にしている。Particularly unique to high-foam extrusion, the surface before entering the sizing die is usually highly uneven and uneven, making it extremely difficult to adjust the position of the sizing die.

本発明はこれらのサイジングダイの現状に鑑み、上記の
如き技術的問題を解決して、よシ簡便な操作で調整可能
な製造方法およびサイジングダイを提供することを目的
とするものである。In view of the current state of these sizing dies, it is an object of the present invention to solve the above-mentioned technical problems and provide a manufacturing method and sizing die that can be adjusted with simple operations.

Ｃ問題点を解決するための手段〕 本発明は心材上に発泡絶縁体を押出し製造する方法にお
いて、心材上に発泡絶縁体を押出し被覆したのち、該発
泡絶縁体の表面粗さを検出するセンサーを併設したサイ
ジングダイによって表面状態を検出し、その表示値に応
じてサイジングダイの位置調整をおこなうことを特徴と
する発泡絶縁体の製造方法および発泡絶縁体をサイジン
グするサイジングダイにおいて、サイジングダイに、２
個以上の表面粗さを検出するセンサーを、サイジングダ
イ内面径と同じ位置になるよう取付けたことを特徴とす
るサイジングダイに関するもので、これＫより上述の目
的を達成するものである。Means for Solving Problem C] The present invention provides a sensor for detecting the surface roughness of the foamed insulator after the core material is extruded and coated with the foamed insulator in a method of extrusion manufacturing a foamed insulator on a core material. A method for producing a foamed insulator and a sizing die for sizing a foamed insulator, characterized in that the surface condition is detected by a sizing die equipped with a sizing die and the position of the sizing die is adjusted according to the displayed value. ,2
This invention relates to a sizing die characterized in that a sensor for detecting surface roughness of more than 1000 yen is attached at the same position as the inner diameter of the sizing die, and achieves the above-mentioned object.

すなわち、本発明の製造方法およびサイジングダイは、
サイジングダイの円周方向２ケ所以上に発泡絶縁体表面
粗さを検出するセンサーをとシつけ表面粗さを測定しな
がら各センサーにおける表面粗さの差がないように又表
面粗さの値が鍛工なる範囲に入るようにサイジングダイ
と押出装置との離隔距離あるいはサイジングダイの傾き
を調整することを特徴とするものである。すなわち、サ
イジングダイに接触すると、発泡絶縁体の表面はきめ細
かになるので、サイジングの程°度、特にその不均一さ
を、発泡体の表面粗さ、特にその粗さの差としてとらえ
ようとするものである。That is, the manufacturing method and sizing die of the present invention are as follows:
Sensors for detecting the surface roughness of the foamed insulator are installed at two or more locations in the circumferential direction of the sizing die, and while measuring the surface roughness, the surface roughness value is This method is characterized by adjusting the separation distance between the sizing die and the extrusion device or the inclination of the sizing die so that the extrusion device falls within the range of forging. In other words, the surface of the foam insulator becomes fine when it comes into contact with the sizing die, so we try to understand the degree of sizing, especially its nonuniformity, as the surface roughness of the foam, especially the difference in that roughness. It is something.

本発明の表面粗さを検出するセンサーとしては、公知の
表面粗さ計（センサー）を用いればよく、例えば表面の
凹凸に接触して検知する接触式表面粗さ計や表面うねり
計、あるいは光の透過で凹凸を検知したシ、表面状態を
カメラで看視するような非接触方式の例えばイメージセ
ンサ−等を用いればよく、特に限定されるところはない
。As the sensor for detecting the surface roughness of the present invention, a known surface roughness meter (sensor) may be used, such as a contact type surface roughness meter or surface waviness meter that detects by contacting the unevenness of the surface, or an optical There is no particular limitation, as long as a non-contact method such as an image sensor or the like that monitors the surface condition with a camera, which detects the unevenness by transmitting the image, may be used.

以下第１図に示される１実施態様をもとく説明する。第
１図（４）は本発明の製造方法およびサイジングダイの
概略説明用の側面図、（５）はＡ−Ａ′断面における断
面図で、１は押出装置で心材は図示しない供給機により
供給されている。５は高発泡絶縁体で心材の周囲に被覆
されたものであるが、押出装置を出た直後から通常急激
に１且つ不規則な形状に発泡をはじめ２のサイジングダ
イに入る。サイジングダイは通常３で示されるような冷
却媒体通路を有してお夛冷却されている。高発泡絶縁体
はサイジングダイでサイジンクされながらその後部２′
に取シつけられたセンサー４で計測される。このセンサ
ー４は高発泡絶縁体が接して走行する時の表面状態、特
に凹凸による粗さを検出し得るもので、公知の表面粗さ
計やイメージセンサ−が用いられる。An embodiment shown in FIG. 1 will be explained below. Figure 1 (4) is a side view schematically explaining the manufacturing method and sizing die of the present invention, and (5) is a sectional view taken along the A-A' cross section, where 1 is an extrusion device and the core material is supplied by a feeder (not shown). has been done. 5 is a highly foamed insulator coated around the core material, and immediately after leaving the extrusion device, it usually begins to foam rapidly into an irregular shape and enters the sizing die 2. The sizing die usually has cooling medium passages as shown at 3 and is cooled multiple times. The high foam insulation is sized with a sizing die and the rear 2'
It is measured by a sensor 4 attached to the This sensor 4 is capable of detecting the surface condition when the highly foamed insulator runs in contact with it, particularly the roughness due to unevenness, and uses a known surface roughness meter or image sensor.

なお、これらのセンサーは高発泡絶縁体の表面を傷つけ
ないようにその部分が凸部にならないようセンサーの大
きさくよってサイジングダイの内面を削り込んで取付け
ることもある。Depending on the size of the sensor, these sensors may be installed by cutting into the inner surface of the sizing die to avoid damaging the surface of the highly foamed insulator and to prevent the area from becoming a protrusion.

又、第１図ではセンサーをサイジングダイの後部にとシ
つけているがサイジングダイの中間部にとシつけること
も可能である。勿論、センサーをサイジングダイとは完
全には一体化せず、適度に分離してもよい。Furthermore, although the sensor is attached to the rear of the sizing die in FIG. 1, it is also possible to attach it to the middle of the sizing die. Of course, the sensor may not be completely integrated with the sizing die, but may be separated to an appropriate degree.

このセンサーは、発泡絶縁体表面がどの程度サイジング
ダイによシ滑らかに成形されているか、即ちどの程度サ
イジングダイに接触し成形されているかを検出するもの
であるため、円周方向く複数個取付ける必要があるが、
２個あるいは４個取付ければ大抵の場合十分である。This sensor detects how smoothly the surface of the foamed insulator is molded by the sizing die, that is, how much it contacts the sizing die and is molded, so multiple sensors are installed circumferentially. Although it is necessary,
Installing two or four is sufficient in most cases.

これらのセンサーによって発泡絶縁体の走行摩擦を円周
方向２個所以上で検出しながらその差が小さくなるよう
に又、その値が適正なる値となるようにサイジングダイ
と押出装置との距離およびサイジングダイの中心軸の位
置調整をおこなう。なお前記の表面粗さの適正値はサイ
ジングされた発泡絶縁体の表面状態とセンサーの種類に
応じたその時の表示値でもって前もってきめておけばよ
い。These sensors detect the running friction of the foam insulator at two or more locations in the circumferential direction, and the distance between the sizing die and the extrusion device and the sizing are adjusted so that the difference is small and the value is an appropriate value. Adjust the center axis of the die. Note that the appropriate value of the surface roughness may be determined in advance based on the displayed value at that time depending on the surface condition of the sized foam insulator and the type of sensor.

〔実施例〕〔Example〕

実施例１゜ 第１図に示した構成を用い、サイジングダイ３の後部２
′には表面粗さ計　東京精密（株）、ｌｉ！。Example 1 Using the configuration shown in FIG. 1, the rear part 2 of the sizing die 3
' is a surface roughness meter Tokyo Seimitsu Co., Ltd., li! .

サーコム２０ＣＢ＋のピックアップ（センサー）を４方
向に取り付は発泡体の表面粗さ測定可能とした。該サイ
ジングダイ３は手動ハンドルによシ、上下、左右及び前
後の任意の方向に自由に可動である。押出装置１よシ発
泡用低密度ポリエチレンを温度１００℃にて押出した。Sercom 20CB+ pickups (sensors) were installed in four directions, making it possible to measure the surface roughness of the foam. The sizing die 3 is freely movable in any direction, up and down, left and right, and front and back, using a manual handle. Low density polyethylene for foaming was extruded through extrusion device 1 at a temperature of 100°C.

この時サイジングダイ３は２０℃の水で冷却し、上記の
ハンドル分操作して、発泡体の表面粗さがいずれも２０
μｍ以下となるようにした。At this time, the sizing die 3 was cooled with water at 20°C, and the handle was operated as described above until the surface roughness of the foam was 20°C.
It was made to be less than μm.

その結果発泡体の表面状態が全周均一で、外径の欄内率
が１０％以下の発泡ポリエチレン絶縁電線が得られた。As a result, a foamed polyethylene insulated wire was obtained in which the surface condition of the foamed body was uniform all the way around and the outside diameter coverage ratio was 10% or less.

なおこのサイジングダイの位置調整に要した時間は１０
分以下であり、表面粗さ計を用いない従来の方法に比べ
て所要時間は４以下であった。又、この操作を繰り返し
た場合、従来の方法に比べて再現性が秀れ、作業者間の
差も少くなった。The time required to adjust the position of this sizing die was 10
The required time was less than 4 minutes compared to the conventional method that does not use a surface roughness meter. Furthermore, when this operation was repeated, the reproducibility was excellent compared to the conventional method, and the differences between operators were also reduced.

〔発明の効果〕〔Effect of the invention〕

以上のような本発明の製造方法およびサイジングダイは
、センサーからの表面粗さに関する表示値を見ながらサ
イジングダイの位置調整ができるので、きわめて短時間
に容易に調整でき、又、従来は不可能であったサイジン
グダイの自動制御も可能となるという大きな効果がある
。The manufacturing method and sizing die of the present invention as described above enable the position of the sizing die to be adjusted while checking the value displayed on the surface roughness from the sensor, so the adjustment can be made easily in a very short time, and it is impossible to do so in the past. This has the great effect of making it possible to automatically control the sizing die.

なお、この製造方法は、押出機に無偏心クロスヘッドが
採用され偏心の極めて少ない絶縁体が押出される場合に
適用すれば、サイジングによってその良好なる偏心度が
減殺されることはなく、極めて効果が大きい。Furthermore, if this manufacturing method is applied when a non-eccentric crosshead is used in the extruder and an insulator with extremely low eccentricity is extruded, the good eccentricity will not be diminished by sizing, and it will be extremely effective. is large.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明にかかる製造方法およびサイジングダイ
の説明図で（４）は側面図、（Ｂ）はＡ　−Ａ’断面図
、２．２’はサイジングダイ、５は冷却媒体通路、４は
表面粗さのセンサーを示す。FIG. 1 is an explanatory view of the manufacturing method and sizing die according to the present invention, (4) is a side view, (B) is a sectional view taken along line A-A', 2.2' is a sizing die, 5 is a cooling medium passage, 4 indicates a surface roughness sensor.

Claims (2)

【特許請求の範囲】[Claims] （１）心材上に発泡絶縁体を押出し製造する方法におい
て、心材上に発泡絶縁体を押出し被覆したのち、該発泡
絶縁体の表面粗さを検出するセンサーを併設したサイジ
ングダイによつて表面状態を検出し、その表示値に応じ
てサイジングダイの位置調整をおこなうことを特徴とす
る発泡絶縁体の製造方法。(1) In the method of extrusion manufacturing a foamed insulator on a core material, after the foamed insulator is extruded and coated on the core material, the surface condition is determined using a sizing die equipped with a sensor that detects the surface roughness of the foamed insulator. A method for manufacturing a foamed insulator, characterized by detecting the value and adjusting the position of a sizing die according to the displayed value. （２）発泡絶縁体をサイジングするサイジングダイにお
いて、サイジングダイに、２個以上の表面粗さを検出す
るセンサーを、サイジングダイ内面径と同じ位置になる
よう取付けたことを特徴とするサイジングダイ。(2) A sizing die for sizing foamed insulators, characterized in that two or more sensors for detecting surface roughness are attached to the sizing die at the same position as the inner diameter of the sizing die.
JP59194794A 1984-09-19 1984-09-19 Manufacture of foam insulator and its sizing die Pending JPS6172513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59194794A JPS6172513A (en) 1984-09-19 1984-09-19 Manufacture of foam insulator and its sizing die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59194794A JPS6172513A (en) 1984-09-19 1984-09-19 Manufacture of foam insulator and its sizing die

Publications (1)

Publication Number Publication Date
JPS6172513A true JPS6172513A (en) 1986-04-14

Family

ID=16330364

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59194794A Pending JPS6172513A (en) 1984-09-19 1984-09-19 Manufacture of foam insulator and its sizing die

Country Status (1)

Country Link
JP (1) JPS6172513A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459130A2 (en) * 1990-05-31 1991-12-04 Gebrüder Kömmerling Kunststoffwerke GmbH Method of extruding plastic materials
US8100162B2 (en) * 2005-07-22 2012-01-24 Airbus Deutschland Gmbh Guiding device for a device for producing fiber preforms by the TFP process for composite components

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5351481A (en) * 1976-10-22 1978-05-10 Sumitomo Electric Ind Ltd Production of insulated wire with dense foamed coating
JPS5511880A (en) * 1978-07-13 1980-01-28 Sumitomo Electric Ind Ltd Manufacturing method and sizing die for highly foamed insulation body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5351481A (en) * 1976-10-22 1978-05-10 Sumitomo Electric Ind Ltd Production of insulated wire with dense foamed coating
JPS5511880A (en) * 1978-07-13 1980-01-28 Sumitomo Electric Ind Ltd Manufacturing method and sizing die for highly foamed insulation body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459130A2 (en) * 1990-05-31 1991-12-04 Gebrüder Kömmerling Kunststoffwerke GmbH Method of extruding plastic materials
EP0459130A3 (en) * 1990-05-31 1992-04-08 Gebrueder Koemmerling Kunststoffwerke Gmbh Method of extruding plastic materials
US8100162B2 (en) * 2005-07-22 2012-01-24 Airbus Deutschland Gmbh Guiding device for a device for producing fiber preforms by the TFP process for composite components

Similar Documents

Publication Publication Date Title
US3947173A (en) Apparatus for extruding concentric plastic sheaths
US4280801A (en) Crosshead
US4793788A (en) Apparatus of extruding a plastic pipe under control of the wall thickness of the extruded plastic pipe
US20120015097A1 (en) Method of using image data in the production of thin wall extrusions
US3994644A (en) Extruder head for extruding an outer tube or sheath about an inner tube or cable
CH647452A5 (en) ADAPTER FOR THE SIMULTANEOUS EXTRUSION OF SEVERAL THREADS OF SYNTHETIC THERMOPLASTIC FOAM USING A SINGLE EXTRUDER.
US3538547A (en) Extruder head for dual extrusion
JPS5857846B2 (en) Cybojiyouyoudentaizaiyonomonitor - Hohououyobisouchi
US4354989A (en) Extrusion of insulating plastic
US4605525A (en) Method for forming insulating electrical conductor
JPS6172513A (en) Manufacture of foam insulator and its sizing die
US3399557A (en) Apparatus for extruding a relatively soft metal sheath onto a hard metal wire
WO1993010922A1 (en) Extrusion apparatus for sheathing a temperature sensitive core material
JPS6172514A (en) Manufacture of foam insulator and its sizing die
JPS6053688B2 (en) Manufacturing method and sizing die for highly foamed insulation
US3080051A (en) Extrusion apparatus
CA1221519A (en) Insulating electrical conductor
JP3465361B2 (en) Extrusion molding method
CA1222362A (en) Insulating electrical conductor
EP1271565B1 (en) Capacitance controlling process
JPH03225A (en) Extrusion cross-head
US2438974A (en) Extruding apparatus
JP3083888B2 (en) Extrusion coating method of coated wire
JP3392195B2 (en) Pipe making equipment
JP2011238351A (en) Extrusion coating method of coated wire