JPS63207627A - Extruding method of rubber and plastics - Google Patents
Extruding method of rubber and plasticsInfo
- Publication number
- JPS63207627A JPS63207627A JP62041721A JP4172187A JPS63207627A JP S63207627 A JPS63207627 A JP S63207627A JP 62041721 A JP62041721 A JP 62041721A JP 4172187 A JP4172187 A JP 4172187A JP S63207627 A JPS63207627 A JP S63207627A
- Authority
- JP
- Japan
- Prior art keywords
- melting point
- temperature
- point additive
- extrusion
- extruded
- 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 abstract description 11
- 239000004033 plastic Substances 0.000 title claims description 11
- 229920003023 plastic Polymers 0.000 title claims description 11
- 238000002844 melting Methods 0.000 claims abstract description 65
- 230000008018 melting Effects 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 45
- 238000001125 extrusion Methods 0.000 claims abstract description 35
- 238000004898 kneading Methods 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims description 55
- 230000000996 additive effect Effects 0.000 claims description 46
- 230000000694 effects Effects 0.000 claims description 7
- 230000002411 adverse Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000001556 precipitation Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 12
- 239000003431 cross linking reagent Substances 0.000 description 11
- 230000003712 anti-aging effect Effects 0.000 description 9
- -1 polyethylene Polymers 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
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
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/29—Feeding the extrusion material to the extruder in liquid form
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/06—Rod-shaped
-
- 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/286—Raw material dosing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えば老化防止剤の如き高融点添加剤と架橋
剤の如き低融点添加剤とをゴム、プラスチックからなる
押出材料中に添加混練して押出しを行うゴム、プラスチ
ック押出し方法に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention is a method of adding and kneading high melting point additives such as anti-aging agents and low melting point additives such as crosslinking agents into an extruded material made of rubber or plastic. This invention relates to a method for extruding rubber and plastics.
（従来技術）
例えば、電カケープル製造プロセスにおいては、ポリエ
チレン等の押出材料中に高融点添加剤である老化防止剤
と低融点添加剤である架橋剤とを一定比率で混合し、押
出材料の架橋を行っている。(Prior art) For example, in the process of manufacturing electric cables, an anti-aging agent, which is a high-melting point additive, and a cross-linking agent, which is a low-melting point additive, are mixed in a fixed ratio in an extruded material such as polyethylene, and the extruded material is cross-linked. It is carried out.
従来、押出材料に対する架橋剤及び老化剤の添加は、押
出材料のベレットに架橋剤と老化防止剤をまぶすか又は
練り込むことに行われているが、近年、押出機内で押出
材料と架橋剤及び老化防止剤を均一に混合する押出し方
法が注目されている。Conventionally, crosslinking agents and aging agents are added to extruded materials by sprinkling or kneading them into the pellets of the extruded materials, but in recent years, the addition of crosslinking agents and aging agents to extruded materials has been done by sprinkling or kneading the crosslinking agents and antiaging agents into pellets of the extruded materials. Extrusion methods that uniformly mix anti-aging agents are attracting attention.
通常、架橋剤として使用されているものは、ジクミルパ
ーオキサイドであり、これは融点が４０℃程度と低く、
常温で粒状又は粉状のものである。Usually, the crosslinking agent used is dicumyl peroxide, which has a low melting point of about 40°C.
It is granular or powdery at room temperature.
一方、老化防止剤として使用されているものは、アルキ
フェノール系、アミンケトン系等のものであり、これら
は通常常温で粉状であり、融点が１６０℃程度と高い。On the other hand, the anti-aging agents used are alkyphenols, amine ketones, etc., which are usually in powder form at room temperature and have a high melting point of about 160°C.
また、架橋剤は７０’〜８０℃位から急激に自己分解を
起こし、発熱するため、両剤を混合融解するために、老
化防止剤の融点まで温度を上げることはできない。この
ため、従来は、架橋剤の融点温度４０℃以上で８０℃位
までの温度で架橋剤を液状化させ、その中に老化防止剤
を溶は込ます（相溶させる）ことによって両方を液状化
させていた。Furthermore, since the crosslinking agent rapidly self-decomposes from about 70' to 80°C and generates heat, it is impossible to raise the temperature to the melting point of the anti-aging agent in order to mix and melt both agents. For this reason, conventional methods have been to liquefy the crosslinking agent at a temperature of 40°C or higher and up to about 80°C, and then melt the anti-aging agent into it (make it compatible), thereby liquefying both. It was turning into something.
（発明が解決しようとする問題点）
しかしながら、高融点添加剤である老化防止剤を、低融
点添加剤である架橋剤中に溶は込ますためには、温度が
高い程良いわけで、温度が低いと溶けないものが析出し
たりして、その混合工程の温度管理が難しい問題点があ
った。(Problem to be solved by the invention) However, in order to dissolve the anti-aging agent, which is a high melting point additive, into the crosslinking agent, which is a low melting point additive, the higher the temperature, the better. If the temperature is low, insoluble materials may precipitate, making it difficult to control the temperature during the mixing process.
本発明の目的は、高融点添加剤を容易に良好に押出材料
中に溶は込ませることができるゴム、プラスチック押出
し方法を提供することにある。An object of the present invention is to provide a method for extruding rubber and plastics that allows high melting point additives to be easily and satisfactorily incorporated into extruded materials.
（問題点を解決するための手段）
上記の目的を達成するための本発明の構成を、実施例に
対応する図面を参照して説明すると、本発明は高融点添
加剤４と低融点添加剤９とをゴム。(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained with reference to the drawings corresponding to the examples. 9 and rubber.
プラスチックからなる押出材料中に添加して押出すゴム
、プラスチック押出し方法において、前記高融点添加剤
４の融解温度と同程度の第１の温度で加熱されている第
１の押出機２の中で前記押出材料中に前記高融点添加剤
４を添加混練して高融点添加剤入り押出材料を押出し、
該高融点添加剤入り押出材料を前記第１の温度より低く
且つ前記低融点添加剤９が前記押出材料に対し悪影響を
及ぼさない第２の温度で制御されている第２の押出機６
内に供給し、該第２の押出機６の中で前記高融点添加剤
入り押出材料中に前記低融点添加剤９を添加混練して高
融点添加剤及び低融点添加剤入り押出材料を押出すこと
を特徴とする。Rubber added to an extrusion material made of plastic and extruded, in a plastic extrusion method, in a first extruder 2 heated at a first temperature comparable to the melting temperature of the high melting point additive 4. Adding and kneading the high melting point additive 4 into the extrusion material to extrude the extrusion material containing the high melting point additive,
A second extruder 6 which controls the extruded material containing the high melting point additive at a second temperature lower than the first temperature and at which the low melting point additive 9 does not have an adverse effect on the extruded material.
The low melting point additive 9 is added and kneaded into the extrusion material containing the high melting point additive in the second extruder 6, and the extrusion material containing the high melting point additive and the low melting point additive is extruded. It is characterized by giving out.
（作用）
このように第１．第２の押出機２．６を用いて、第１の
温度で加熱されている第２の第１の押出機２では高融点
添加剤４の添加混線を行って高融点添加剤入り押出材料
を押出し、この高融点添加剤入り押出材料を前記第１の
温度より低く且つ低融点添加剤９が押出材料に対し悪影
響を及ぼさない第２の温度で制御されている第２の押出
機６に供給して該第２の押出機６で低融点添加剤９の添
加混線を行うようにすると、各添加剤４．９を最適温度
でそれぞれ添加でき、また温度管理も容易となり、添加
剤の析出を防止できる。(Effect) In this way, the first. Using the second extruder 2.6, the high melting point additive 4 is added and mixed in the second first extruder 2 heated at the first temperature to produce an extruded material containing the high melting point additive. extrusion, and feeding the extruded material containing the high melting point additive to a second extruder 6 which is controlled at a second temperature lower than the first temperature and at which the low melting point additive 9 does not have an adverse effect on the extruded material; By adding and mixing the low melting point additive 9 in the second extruder 6, each additive 4.9 can be added at the optimum temperature, and temperature control is also facilitated to prevent precipitation of the additive. It can be prevented.
（実施例） 以下本発明の実施例を図面を参照して詳細に説明する。(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.
図面は本発明を連続架橋ポリエチレン押出しプロセスに
適用した場合について示している。The drawings illustrate the application of the invention to a continuous cross-linked polyethylene extrusion process.
ポリエチレンよりなる押出材料は、ホッパー１より第１
の押出ｌｌＡ２の供給し、加熱、溶融する。このポリエ
チレンは添加剤を含まないピュアーなポリエチレンであ
る。この第１の押出機２は、高融点添加剤（ここでは老
化防止剤）の融解温度（１６０℃）と同程度の第１の温
度（１６０’〜１８０℃）で加熱する。このような第１
の押出機２には、融解タンク３で融解させた高融点添加
剤４をポンプ５で添加し、混練する。この第１の押出機
２では、高融点添加剤４の融点に近い第１の温度で加熱
されているので、融解温度が高い高融点添加剤でも、支
陣なく混合できる。第１の押出機２で混練した高融点添
加剤入り押出材料を押出して第２の押出１１６に供給す
る。その押出し供給の過程で高融点添加剤入り押出材料
を、次に添加予定の低融点添加剤が該押出材料に対し悪
影響を及ぼさない第２の温度（約１３０℃）近くまで冷
却器７で冷却して、該第２の温度で加熱されている第２
の押出１ｆｉ６に供給する。この第２の押出機６には、
溶解タンク８で融解させた低融点添加剤９をポンプ１０
で添加し、混練する。この第２の押出機６においては、
押出材料中に低融点添加剤９である架橋剤が含まれ、温
度が高いまま押出しを行うと、該押出ＩＥ１６内におい
て架橋反応が促進され、それが焼は異物となり、押出材
料中に含まれ、ケーブル特性を著しく劣化させることに
なる。このため、架橋剤が含まれた押出材料の押出しに
おいては、１３０℃程度以下で押出すことが好ましいと
いわれている。このため第２の押出機６においては、第
１の押出機２で押出された比較的高温な高融点添加剤入
り押出材料を第２の温度（１３０℃）近くまで冷却した
状態で受けいれて、該第２の温度に温度管理して押出し
を行う。The extruded material made of polyethylene is transported from the hopper 1 to the first
Extrusion llA2 is fed, heated and melted. This polyethylene is pure polyethylene containing no additives. This first extruder 2 heats at a first temperature (160' to 180°C) that is approximately the same as the melting temperature (160°C) of the high melting point additive (in this case, the anti-aging agent). The first one like this
A high melting point additive 4 melted in a melting tank 3 is added to the extruder 2 by a pump 5 and kneaded. In this first extruder 2, the high melting point additive 4 is heated at a first temperature close to its melting point, so even a high melting point additive having a high melting temperature can be mixed without any interference. The extrusion material containing high melting point additives kneaded by the first extruder 2 is extruded and supplied to the second extruder 116. During the extrusion supply process, the extruded material containing the high melting point additive is cooled in the cooler 7 to a temperature close to the second temperature (approximately 130°C) at which the low melting point additive to be added does not have a negative effect on the extruded material. and the second heated at the second temperature.
Extrusion 1fi6. This second extruder 6 includes
The low melting point additive 9 melted in the melting tank 8 is transferred to the pump 10
Add and knead. In this second extruder 6,
If the extruded material contains a crosslinking agent, which is a low melting point additive 9, and extrusion is carried out at a high temperature, the crosslinking reaction will be promoted in the extrusion IE 16, which will become foreign matter when baked and will not be contained in the extruded material. , the cable characteristics will be significantly deteriorated. For this reason, it is said that in extrusion of an extrusion material containing a crosslinking agent, it is preferable to extrude at about 130°C or lower. For this reason, the second extruder 6 receives the relatively high temperature extruded material containing the high melting point additive extruded by the first extruder 2 in a state where it has been cooled to near the second temperature (130° C.). Extrusion is performed while controlling the temperature to the second temperature.
第２の押出機６ではそのクロスヘッド１１で導体１２の
外周に高融点添加剤及び低融点添加剤入り押出材料を押
出し被覆し、得られたケーブルを架橋管１３内に導いて
加熱架橋を行い、冷却し、巻取機で巻取る。In the second extruder 6, the crosshead 11 extrudes and coats the outer periphery of the conductor 12 with an extruded material containing high melting point additives and low melting point additives, and the resulting cable is guided into the crosslinked pipe 13 to heat crosslink. , cool and wind up with a winder.
上記実施例では、第１の押出機２゛からの押出し過程で
押出材料を冷却してから第２の押出機６に供給したが、
該押出材料を冷却しないで第２の押出機６に供給し、第
２の押出機６内で第２の温度に冷却してもよい。In the above embodiment, the extruded material was cooled during the extrusion process from the first extruder 2' and then supplied to the second extruder 6.
The extruded material may be fed to the second extruder 6 without being cooled and cooled within the second extruder 6 to a second temperature.
また、上記実施例では、押出材料がプラスチックの場合
について説明したが、押出材料がゴムの場合についても
本発明は同様に適用できるものである。Further, in the above embodiments, the case where the extruded material is plastic has been described, but the present invention is similarly applicable to the case where the extruded material is rubber.
（発明の効果）
以上説明したように本発明に係るゴム、プラスチック押
出し方法においては、第１の温度で加熱されている第１
の押出機では高融点添加剤の添加混線を行って高融点添
加剤入り押出材料を押出し、該高融点添加剤入り押出材
料を第１の温度より低く且つ低融点添加剤が押出材料に
対し悪影響を及ぼさない第２の温度で加熱されている第
２の押出機に供給し、該第２の押出機内では低融点添加
剤の添加混線を行うようにしたので、各添加剤を最適温
度でそれぞれ添加でき、また温度管理も容易となり、添
加剤の析出等を防止でき□、品質の良い押出しを行える
利点がある。(Effects of the Invention) As explained above, in the rubber/plastic extrusion method according to the present invention, the first
In the extruder, the high melting point additive is added and mixed to extrude the extruded material containing the high melting point additive, and the extruded material containing the high melting point additive is heated to a temperature lower than the first temperature and the low melting point additive has an adverse effect on the extruded material. The additives are fed to a second extruder that is heated at a second temperature that does not affect It has the advantage that it can be added, temperature control is easy, precipitation of additives can be prevented, and high-quality extrusion can be performed.
図面は本発明の押出し方法を実施する装置の概略構成を
示す一部縦断平面図である。
２・・・第１の押出機、４・・・高融点添加剤、６・・
・第２の押出機、９・・・低融点添加剤。The drawing is a partially vertical plan view showing a schematic configuration of an apparatus for carrying out the extrusion method of the present invention. 2... First extruder, 4... High melting point additive, 6...
- Second extruder, 9...low melting point additive.
Claims (1)
らなる押出材料中に添加して押出すゴム、プラスチック
押出し方法において、前記高融点添加剤の融解温度と同
程度の第１の温度で加熱されている第１の押出機の中で
前記押出材料中に前記高融点添加剤を添加混練して高融
点添加剤入り押出材料を押出し、該高融点添加剤入り押
出材料を前記第１の温度より低く且つ前記低融点添加剤
が前記押出材料に対し悪影響を及ぼさない第２の温度で
制御されている第２の押出機内に供給し、該第２の押出
機の中で前記高融点添加剤入り押出材料中に前記低融点
添加剤を添加混練して高融点添加剤及び低融点添加剤入
り押出材料を押出すことを特徴とするゴム、プラスチッ
クの押出し方法。In a rubber or plastic extrusion method in which a high melting point additive and a low melting point additive are added to an extrusion material made of rubber or plastic and extruded, heating is performed at a first temperature comparable to the melting temperature of the high melting point additive. The high melting point additive is added and kneaded into the extrusion material in the first extruder where the high melting point additive is extruded, and the extrusion material containing the high melting point additive is heated to the first temperature. feeding into a second extruder controlled at a second temperature lower and at which said low melting point additive does not have an adverse effect on said extruded material, said high melting point additive in said second extruder; A method for extruding rubber and plastics, which comprises adding and kneading the low melting point additive into the extrusion material and extruding the extrusion material containing the high melting point additive and the low melting point additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62041721A JPS63207627A (en) | 1987-02-25 | 1987-02-25 | Extruding method of rubber and plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62041721A JPS63207627A (en) | 1987-02-25 | 1987-02-25 | Extruding method of rubber and plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63207627A true JPS63207627A (en) | 1988-08-29 |
Family
ID=12616283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62041721A Pending JPS63207627A (en) | 1987-02-25 | 1987-02-25 | Extruding method of rubber and plastics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63207627A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0310485A (en) * | 1989-06-07 | 1991-01-18 | Fujitsu Ltd | Coding control method by buffer memory occupancy |
| JPH0376622A (en) * | 1989-08-21 | 1991-04-02 | Fujikura Ltd | Extrusion of resin incorporated with crosslinking agent |
| WO2002028618A1 (en) * | 2000-10-06 | 2002-04-11 | Basf Aktiengesellschaft | Mixing device and methods for producing thermoplastically processable moulding materials, especially additive batches |
-
1987
- 1987-02-25 JP JP62041721A patent/JPS63207627A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0310485A (en) * | 1989-06-07 | 1991-01-18 | Fujitsu Ltd | Coding control method by buffer memory occupancy |
| JPH0376622A (en) * | 1989-08-21 | 1991-04-02 | Fujikura Ltd | Extrusion of resin incorporated with crosslinking agent |
| WO2002028618A1 (en) * | 2000-10-06 | 2002-04-11 | Basf Aktiengesellschaft | Mixing device and methods for producing thermoplastically processable moulding materials, especially additive batches |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4528155A (en) | Production of cross-linked polymeric extruded articles | |
| JP2686592B2 (en) | Elastic composition production process | |
| CN100457420C (en) | Extrusion of peroxidic cross-linkable molded plastic parts | |
| US4092285A (en) | Encapsulation of critical chemicals | |
| JPH0649288B2 (en) | Method for producing polyvinyl chloride material for extrusion molding | |
| CN107216517B (en) | Preparation method of ultrahigh molecular weight polyethylene 3D printing supplies | |
| JPH08298032A (en) | Manufacture of crosslinked polyethylene insulated power cable | |
| JPS6360062B2 (en) | ||
| CN201833574U (en) | Feeding and producing device for melting sides of high molecular materials | |
| CN108858869B (en) | A equipment for producing high dispersion type fluorine-containing polymer master batch | |
| CN110698746A (en) | Polyethylene foam and preparation method thereof | |
| JPS63207627A (en) | Extruding method of rubber and plastics | |
| JPS6198736A (en) | Production of flowable coated rubber pellet and pellet composition | |
| JP2002254492A (en) | Pva extrusion method using twin-screw extruder and twin-screw extruder | |
| US3956214A (en) | Method of preparing curable pellets of polyethylene with a motionless mixer | |
| JP2002502453A (en) | Manufacturing method of flexible PVC | |
| CN114619585A (en) | Production equipment and process method for preparing silane crosslinked polyethylene by two-step method | |
| JPH0376623A (en) | Extrusion of resin incorporated with crosslinking agent | |
| JPH0550487A (en) | Multistage extrusion of thermoplastic resin | |
| US4153762A (en) | Process for working additive into polymers, particularly polymers which can be foamed | |
| CN110625841A (en) | Preparation method of functional master batch | |
| JP2781204B2 (en) | Oil seal seal member and method of manufacturing the same | |
| JPH0542582A (en) | Multi-stage extruding method of thermoplastic resin | |
| JPH0550486A (en) | Multistage thermoplastic resin extruder | |
| JPH0376619A (en) | Extruding method of resin with crosslinking agent |