JPS58132533A - Screw extruder - Google Patents

Screw extruder

Info

Publication number
JPS58132533A
JPS58132533A JP57014575A JP1457582A JPS58132533A JP S58132533 A JPS58132533 A JP S58132533A JP 57014575 A JP57014575 A JP 57014575A JP 1457582 A JP1457582 A JP 1457582A JP S58132533 A JPS58132533 A JP S58132533A
Authority
JP
Japan
Prior art keywords
polymer
screw
port
vent chamber
extruder
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
Application number
JP57014575A
Other languages
Japanese (ja)
Other versions
JPH0236379B2 (en
Inventor
Hiroshi Terada
寺田　拡
Kenichi Sakunaga
作永　憲一
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.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co 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 Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP57014575A priority Critical patent/JPS58132533A/en
Publication of JPS58132533A publication Critical patent/JPS58132533A/en
Publication of JPH0236379B2 publication Critical patent/JPH0236379B2/ja
Granted 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
    • 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
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in 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
    • B29C48/36—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
    • B29C48/397—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 using a single screw
    • 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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/55—Screws having reverse-feeding elements
    • 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
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • 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
    • 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
    • B29C48/05—Filamentary, e.g. strands

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain said extruder for a light transmitting fiber material free from a contamination and of a good transparence, by attaching a vent chamber provided with a deaerating port and a polymer takeout port between a polymer carrying part composed of a screw and a barrel and a shaft seal part of the bearing of a screw driving part. CONSTITUTION:A vent chamber 4 provided with a deaerating port 5 and a polymer takeout port 6 is installed between a polymer carrying part 12 composed of a screw 1 and a barrel 2 and a shaft seal part 8 of the bearing of a screw driving part at an extruder and the screw of the carrying part 12 is provided with a positive screw to extrude a polymer fed from a polymer feeding port 3 from a tip part 7 of the extruder normally, also the screw part between the polymer feeding port 3 and the vent chamber 4 is provided with a reverse screw and a part of the fed polymer is taken out from a polymer takeout port 6 and the mixing of a contaminant is prevented. It is preferable that the scraping device 11 of the polymer and a baffle plate 13 by which the polymer can not reach to a shaft sealing part 8 are provided in the vent chamber 4.

Description

【発明の詳細な説明】 本発明は、透明性の優れた高純度重合体を製造するため
のスクリュー押出機に関する。より評しくは光伝送繊維
素材として使用出来るグレードのう明性の優れた高純度
重合体を製造するためのスクリュー押出機に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a screw extruder for producing high purity polymers with excellent transparency. More particularly, the present invention relates to a screw extruder for producing a high purity polymer with excellent opacity that can be used as an optical transmission fiber material.

近年、近距離光通信用としてプラスチックの光伝送繊維
を用いることが検討されている。プラスチックの光伝送
繊維としては透明性の優れたポリスチレン、ポリメタク
リル酸メチルなどが用いられているが、伝送する元の吸
収や散乱を起こす帯色やゴミ等の異物σ）混入を出来る
だ　　　　′け少なくした高純度の重合体を使用しなけ
ればならない。In recent years, the use of plastic optical transmission fibers for short-distance optical communications has been considered. Polystyrene, polymethyl methacrylate, etc., which have excellent transparency, are used as plastic optical transmission fibers, but foreign substances such as color bands and dust that cause absorption and scattering of the transmitting material can be mixed in. A reduced amount of high purity polymer must be used.

これまで、透明性σ）優れた高純度の重合体を製造する
方法として、例えば東金原料及び添加物の精製、濾過を
十分性なって！満真合する方法、並びに原料単欺体を精
製、１過し、塊状重合又は浴液重合によって適当な重合
率まで重合させる方法等が株られている。これらσ）方
法はいずれも重合後の重合体から未反応単量体等の揮発
成分を除去することが必要であり・一般に隅粘度溶融富
合体を処理するためのスクリュ一式の脱気押出機が使用
されている。Until now, as a method for producing high-purity polymers with excellent transparency (σ), for example, purification and filtration of Togane raw materials and additives have been considered sufficient! There are methods for complete polymerization, as well as methods for purifying raw materials, passing them through one pass, and polymerizing them to an appropriate polymerization rate by bulk polymerization or bath liquid polymerization. In all of these σ) methods, it is necessary to remove volatile components such as unreacted monomers from the polymer after polymerization.In general, a degassing extruder with a set of screws is used to process the corner viscosity molten aggregate. It is used.

しかしながら、重合体から揮発性成分を除去するに使用
する通常のスクリュー押出機では、軸封部分が浴ＩＩＩ
！重合体に接するσ）で回転駆動の軸封部から異物が混
入したり、またスクリュー押出機による減圧脱気は、通
常押１１機バレルにベントロを設けこの部分′ｆ：真空
糸に接続して押出機内部のｆ４顯（重合体を減圧下に曝
して脱気するためスクリュー表面上の浴融重合体σ）一
部がベントロより押出機の外にＧゴみ出してくるｎこの
ように一部ベントアップした溶融重合体の一部カスクリ
ューの回転【こまって再び押出機内にまき込まれる場合
があり、これにより押出・機内が汚染されることがしば
しば発生し、光伝送Ｍ４維素材として使用できるグレー
ドの透明性のすぐれた高純度重合体を製造することが出
来なかった〇 本発明者らは・上記の観点より異物混入のない透明性の
優れた高純度重合体をｔＭ造するためのスクリュー押出
機について鋭意検討した結果・本発明に到達したもので
ある。However, in conventional screw extruders used to remove volatile components from polymers, the shaft seal is
! In order to prevent foreign matter from entering the rotary drive shaft seal part (σ) that is in contact with the polymer, or for degassing under reduced pressure using a screw extruder, a vent is usually installed in the extruder barrel and this part 'f: connected to the vacuum thread. Part of the f4 inside the extruder (the bath melt polymer σ on the screw surface to degas the polymer by exposing it to reduced pressure) flows out of the extruder from the vent. Part of the molten polymer that has been vented up may be thrown into the extruder again due to the rotation of the cascrew, which often contaminates the extrusion and inside of the machine, and is used as an optical transmission M4 fiber material. 〇The present inventors were unable to produce a high-purity polymer with excellent transparency of the grade that can be obtained.From the above viewpoint, the inventors have developed The present invention was arrived at as a result of intensive study on screw extruders.

すなわち、本発明の要旨とするところは、スクＩＪニー
Ｊｌｌｔｂ機＆こおいて、スクリューとバレルとで構成
される重合体移送部とスクリュー駆動軸受の軸封部との
間に・脱気口と重合体抜取口とを備えたベント室を設け
たことを特徴とするスクリュー押出機にある。That is, the gist of the present invention is that, in a screw IJ knee Jlltb machine, a deaeration port and There is provided a screw extruder characterized in that it is provided with a vent chamber equipped with a polymer extraction port.

以下、本発明を実施例である図面に基づいて説明する。Hereinafter, the present invention will be explained based on drawings which are examples.

第１図は本発明の一例を示すスクリュー押出機の縦断面
図を示し１第コ図は第１図に示すスクリュー押出機のＡ
　−Ａ’視の〜「面図を示す。FIG. 1 is a vertical sectional view of a screw extruder showing an example of the present invention, and FIG.
- Shows a top view from A' view.

第１図において、（１）はスクリュー、（コ）はバレル
であり、未反応単量体等の揮発成分を含む重合体（以下
、供給本合体と呼ぶ）はバレル（コ）Ｇこ設けらｎた重
合体供給口（３）からスクリュー０）押出機内に供給さ
れる。（弘）はベント室でスクリュ一式［ｔｆｆｌ（（
＆）とスクリュー（１）とバレル（コ）トチ構成される
重合体移送部（／コ）との間に設けられる。In Fig. 1, (1) is a screw, (C) is a barrel, and the polymer containing volatile components such as unreacted monomers (hereinafter referred to as the feed polymer) is placed in the barrel (G). The polymer is fed into the screw extruder from the polymer feed port (3). (Hiro) is in the vent chamber with a set of screws [tffl((
&), the screw (1), and the polymer transfer section (/), which is comprised of a barrel (KO).

ベント室（ｑ）には上部に脱気口（５）および底部には
重合体抜取口（Ａ）が設けである□脱気Ｃ１（ｊ）は真
空源に接続してベント室（４１）内を減圧下に保持する
。The vent chamber (q) is provided with a deaeration port (5) at the top and a polymer extraction port (A) at the bottom. □Deaeration C1 (j) is connected to a vacuum source and is injected into the vent chamber (41). is held under vacuum.

これにより重合体供給口（３）よりベント室（４’）側
の押出機内はベント室に至るまで減圧下に曝さｎる０従
って・スクリュー押出機に供給された供給車合体中に含
まれている未反応単量体等の揮発成分はスクリュー押出
機のスクリューを曲ってベント室より糸外に脱気される
。As a result, the inside of the extruder on the side of the vent chamber (4') from the polymer supply port (3) is exposed to reduced pressure up to the vent chamber. Volatile components such as unreacted monomers are degassed from the thread through the vent chamber through the screw of the screw extruder.

本発明のスクリュー押出機のスクリュー（１）には、本
合体供給口より供給された供給重合体を脱気した後、そ
の重合体を該押出機σ）先端８ｔｓ　（？）より正規に
押出すための正ネジが設けられている。しかし本発明の
スクリュー押出機の重合体・（Ａ） 供給口とベント％とσ）間のスクリュ一部には、異物の
混入を防ぐために・供給重合体の一部をベント室σ）重
合体抜取口（Ａ）より取り邑せるように逆ネジを設ける
のがよい。こθ）スクリュ一部の逆ネジの餉きにより供
給車合体σ）一部がベント％に逆送され・異物を含んだ
重合体がスクリュー押出機内に混入するのを防ぐことが
できる。The screw (1) of the screw extruder of the present invention deaerates the supplied polymer supplied from the main coalescing supply port, and then regularly extrudes the polymer from the tip 8ts (?) of the extruder σ). A right-hand screw is provided for this purpose. However, in the screw extruder of the present invention, a part of the screw between the (A) supply port and the vent % and σ) is placed in the vent chamber σ) in order to prevent foreign matter from entering. It is best to provide a reverse thread so that it can be removed from the extraction port (A). This θ) Part of the screw is reversely threaded into the supply car by locking the reverse thread of the screw. σ) A part of the screw is sent back to the vent, which prevents polymer containing foreign matter from entering the screw extruder.

また、ベント室Ｇこはスクリューの軸に沿って重合体σ
）かき取装置ｔ　（／／）を設け、ベント室内に取り出
された重合体を重合体抜取口（６）より円滑に外部へ排
出させるような１ｍ遣にするとよい。In addition, the vent chamber G has a polymer σ along the axis of the screw.
) It is preferable to provide a scraping device t (//) with a length of 1 m so that the polymer taken out into the vent chamber can be smoothly discharged to the outside from the polymer extraction port (6).

第２図において（１）はスクリューで、この軸Ｇこ円板
状の邪魔板（１３）が取付けられている。この邪魔板（
１３）により重合体がスクリューの軸上を伝わって軸封
部（幻まで到達しないようにしである。In FIG. 2, (1) is a screw, and a disc-shaped baffle plate (13) is attached to the shaft G of the screw. This baffle board (
13) to prevent the polymer from traveling along the shaft of the screw and reaching the shaft sealing part (phantom).

（／ダ）はスクレーバーで、スクリューの軸上を移送さ
れてきた重合体はここで掻取られて重合体抜取口（Ａ）
より外部に排出される。スクレーバー（／すはスクレー
バー押え（／！ｒ）によりスクリュー（１）および邪魔
板（／３）に接触するように固定され＜Ａ） ている。また、ベント室は第７図および第２図に示すよ
うに脱気口及び重合体抜取口を設けたベント室の内壁と
スクリューの軸とが接触しないように十分な空１′１４
Ｉを保つように構成される。(/da) is a scraper, and the polymer transferred on the shaft of the screw is scraped off here and placed at the polymer extraction port (A).
More is discharged to the outside. The scraper (/) is fixed by a scraper holder (/!r) so as to be in contact with the screw (1) and the baffle plate (/3). Also, as shown in Figures 7 and 2, the vent chamber should have enough space 1'14 so that the inner wall of the vent chamber provided with the deaeration port and the polymer extraction port does not come into contact with the shaft of the screw.
It is configured to maintain I.

本発明のスクリュー押出機は、−軸もしくは多軸σ）ス
クリューのいずれも使用できる。またバレル（２）に設
ける本合体供給口の位置は・脱気して押出された重合体
中に異物を混入させないようすれは、特に限定さｎない
。The screw extruder of the present invention can use either a -shaft or multi-shaft σ) screw. Further, the position of the main body supply port provided in the barrel (2) is not particularly limited in order to prevent foreign matter from being mixed into the deaerated and extruded polymer.

以上の＃造を有する本発明θ）スクリュー押出Ｉａは未
反応Ｉ４を緻捧と抜取Ｍ（合体はベント￥Ｇ−で完全に
分離されているので・揮発成分を多鼠に含有する電合体
組成を用いても脱気ＩＬＪ　ス１）らの重合体のベント
アップは起らす、また軸封がら漏洩するか１ｍ油、グリ
ース、パツキン屑等の異物は抜取電合体と御粘に重合体
抜取口より外部Ｇこ排出されてスクリュー押出機の本合
体移送部内に混入しないので、原料供給口からスクリュ
ー押出機内に供給されて、脱気［１より揮発成分の除失
された重合体の大部分は、異物混入を受けることなく、
スクリュー押出機の先端部より押出されて、本発明の目
的とする透明性の優れた高純度重合体を製造することが
できる。The present invention θ) screw extrusion Ia having the above-mentioned structure is used to compact and extract unreacted I4 M (the coalescence is completely separated at the vent ￥G-, so an electrolyte composition containing a large number of volatile components) Even if you use a degassed ILJ, venting of polymers such as 1) will occur, and if there is leakage from the shaft seal or foreign matter such as 1m oil, grease, packing debris, etc., remove the polymer from the electric composite and carefully remove the polymer. Since G is discharged to the outside from the port and does not mix into the main unit transfer section of the screw extruder, it is supplied into the screw extruder from the raw material supply port and degassed (most of the polymer from which volatile components have been removed from 1). is free from contamination,
By extruding from the tip of a screw extruder, a high purity polymer with excellent transparency, which is the object of the present invention, can be produced.

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

Claims (1)

【特許請求の範囲】 （１）　　スクリュー押出機において、スクリューとバ
レルとで構成される重合体移送部とスクリュー駆動軸受
の軸封部との間に、脱気口と重合体の抜取口とを備えた
ベント室を設けたことを特徴とするスクリュー押出機。 （コ）　ベント￥内でスクリュー軸と、脱気口及び重合
体抜取口を設けたベント室の内壁とが接触しないように
、十分な空間をもたせるようにしたことを特徴とする特
ｗｆＭ求σ）範囲第（１）ｍｉｌｃ［のスクリュー押出
機。 （３）＊合体移送部σ）バレルに設けられた重合体供給
口とベント室間σ）スクリュ一部Ｇこ、１（合体を正規
に押出すための正ネジとは逆方向のネジが設けられてい
ることを特徴とする′＃肝請求の範囲第（１）項記載の
スクリュー押出機。 （４’）　　ベン）％内のスクリュー軸部Ｇこ重合体の
かき取り装置が付設されていることを特徴とする特許請
求σ）範囲第（１）項記載σ）スクリュー押出機。[Claims] (1) In a screw extruder, a deaeration port and a polymer extraction port are provided between a polymer transfer section consisting of a screw and a barrel and a shaft sealing section of a screw drive bearing. A screw extruder characterized by being provided with a vent chamber. (j) A special wfM σ-requesting device characterized in that sufficient space is provided within the vent so that the screw shaft does not come into contact with the inner wall of the vent chamber provided with the deaeration port and the polymer extraction port. ) Range No. (1) MILC [screw extruder. (3) *Combined transfer part σ) Between the polymer supply port provided in the barrel and the vent chamber σ) Part of the screw G The screw extruder according to claim (1), characterized in that the screw extruder is equipped with a device for scraping off the polymer at the screw shaft portion G within 1%. Claim σ) A screw extruder as described in item (1) of claim σ).
JP57014575A 1982-02-01 1982-02-01 Screw extruder Granted JPS58132533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57014575A JPS58132533A (en) 1982-02-01 1982-02-01 Screw extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57014575A JPS58132533A (en) 1982-02-01 1982-02-01 Screw extruder

Publications (2)

Publication Number Publication Date
JPS58132533A true JPS58132533A (en) 1983-08-06
JPH0236379B2 JPH0236379B2 (en) 1990-08-16

Family

ID=11864956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57014575A Granted JPS58132533A (en) 1982-02-01 1982-02-01 Screw extruder

Country Status (1)

Country Link
JP (1) JPS58132533A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132321U (en) * 1984-02-13 1985-09-04 東芝機械株式会社 rear vent extruder
JPH01132724U (en) * 1989-02-15 1989-09-08
JP2015221565A (en) * 2014-05-22 2015-12-10 コペリオン ゲーエムベーハー Device and method for degassing material to be processed
US9745224B2 (en) 2011-10-07 2017-08-29 Boral Ip Holdings (Australia) Pty Limited Inorganic polymer/organic polymer composites and methods of making same
US9752015B2 (en) 2014-08-05 2017-09-05 Boral Ip Holdings (Australia) Pty Limited Filled polymeric composites including short length fibers
US9988512B2 (en) 2015-01-22 2018-06-05 Boral Ip Holdings (Australia) Pty Limited Highly filled polyurethane composites
US10030126B2 (en) 2015-06-05 2018-07-24 Boral Ip Holdings (Australia) Pty Limited Filled polyurethane composites with lightweight fillers
US10086542B2 (en) 2004-06-24 2018-10-02 Century-Board Usa, Llc Method for molding three-dimensional foam products using a continuous forming apparatus
US10138341B2 (en) 2014-07-28 2018-11-27 Boral Ip Holdings (Australia) Pty Limited Use of evaporative coolants to manufacture filled polyurethane composites
US10472281B2 (en) 2015-11-12 2019-11-12 Boral Ip Holdings (Australia) Pty Limited Polyurethane composites with fillers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242554A (en) * 1975-09-29 1977-04-02 Schmidt Karl Heinz Method and device for extruding plastic material or the like
JPS5319375A (en) * 1976-08-06 1978-02-22 Asahi Dow Ltd Molten synthetic resin extruding method and device therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242554A (en) * 1975-09-29 1977-04-02 Schmidt Karl Heinz Method and device for extruding plastic material or the like
JPS5319375A (en) * 1976-08-06 1978-02-22 Asahi Dow Ltd Molten synthetic resin extruding method and device therefor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132321U (en) * 1984-02-13 1985-09-04 東芝機械株式会社 rear vent extruder
JPH01132724U (en) * 1989-02-15 1989-09-08
US10086542B2 (en) 2004-06-24 2018-10-02 Century-Board Usa, Llc Method for molding three-dimensional foam products using a continuous forming apparatus
US10889035B2 (en) 2004-06-24 2021-01-12 Century-Board Corporation Method for molding three-dimensional foam products using a continuous forming apparatus
US9745224B2 (en) 2011-10-07 2017-08-29 Boral Ip Holdings (Australia) Pty Limited Inorganic polymer/organic polymer composites and methods of making same
JP2015221565A (en) * 2014-05-22 2015-12-10 コペリオン ゲーエムベーハー Device and method for degassing material to be processed
US10138341B2 (en) 2014-07-28 2018-11-27 Boral Ip Holdings (Australia) Pty Limited Use of evaporative coolants to manufacture filled polyurethane composites
US9752015B2 (en) 2014-08-05 2017-09-05 Boral Ip Holdings (Australia) Pty Limited Filled polymeric composites including short length fibers
US9988512B2 (en) 2015-01-22 2018-06-05 Boral Ip Holdings (Australia) Pty Limited Highly filled polyurethane composites
US10030126B2 (en) 2015-06-05 2018-07-24 Boral Ip Holdings (Australia) Pty Limited Filled polyurethane composites with lightweight fillers
US10472281B2 (en) 2015-11-12 2019-11-12 Boral Ip Holdings (Australia) Pty Limited Polyurethane composites with fillers

Also Published As

Publication number Publication date
JPH0236379B2 (en) 1990-08-16

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