JPS61277421A - Loading method for auxiliary raw material in extrusion machine - Google Patents
Loading method for auxiliary raw material in extrusion machineInfo
- Publication number
- JPS61277421A JPS61277421A JP60121213A JP12121385A JPS61277421A JP S61277421 A JPS61277421 A JP S61277421A JP 60121213 A JP60121213 A JP 60121213A JP 12121385 A JP12121385 A JP 12121385A JP S61277421 A JPS61277421 A JP S61277421A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- auxiliary raw
- auxiliary
- port
- input port
- 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
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
- B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
-
- 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
- B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
-
- 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
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
-
- 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
- B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
-
- 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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、プラスチック等の押出機においてガラス繊維
等の副原料を投入する方法Ｖｃ関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method Vc for introducing auxiliary raw materials such as glass fiber into an extruder for plastics and the like.
く従来の技術〉
ガラス繊維で強化プラスチックを作る方法に於て、樹脂
とガラス繊維と全押出機に同時に供給する方法があるが
、機械摩耗と繊維切断のトラブルが起き易い。Conventional Technology> There is a method for making reinforced plastics using glass fibers, in which resin and glass fibers are simultaneously fed into an extruder, but problems such as machine wear and fiber breakage are likely to occur.
このため、樹脂のみを始めに供給し、これ？！融させた
後、ガラス繊維に加えて混合さぜることにより、上記ト
ラブルの軽減を叶つ几ものが、例えば、特開１１Ｂ４９
−８７７５１公報に開示さＡ’ｔいる。For this reason, only the resin is supplied at the beginning, and this? ! After melting, the above-mentioned trouble can be alleviated by adding it to glass fiber and mixing it.
A't disclosed in Publication No.-87751.
〈発明が解決しようとする問題点〉
ガラス繊維入シの樹脂として、ポリプロピレン、ナイロ
ン、ポリカーボネート等の樹脂が良く用いられるが、前
記従来のものでは、これらの樹脂が一段目で溶融した時
、水分、揮発物が気化し、ガラス繊維の投入口から沸き
上がって米る。これがガラス繊維投入シュートなどで液
化し、ガラス繊維が付着してブリッジ現象が生じ、安定
運転が行なえなくなるトラブルが起き易い。ガラス繊ｍ
ｔ−強制フイーダで送ると多少は改善されるが、やは９
上記トラブルを完全になくすることが出来ないという問
題があった。<Problems to be Solved by the Invention> Resins such as polypropylene, nylon, and polycarbonate are often used as glass fiber-containing resins, but in the conventional resins described above, when these resins are melted in the first stage, moisture is released. The volatile matter evaporates and rises from the glass fiber input port. This liquefies in the glass fiber input chute, etc., and the glass fibers adhere to it, causing a bridging phenomenon, which tends to cause problems that make stable operation impossible. glass fiber m
Sending it with a t-forced feeder improves it somewhat, but it is still 9
There is a problem in that the above-mentioned trouble cannot be completely eliminated.
そこで、本発明は、気化した水分がガラス繊、維の投入
口に沸き上がらないようにし、ガラス繊維の投入が安定
して行なえる投入方法を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for stably charging glass fibers by preventing vaporized water from boiling up at the glass fiber input port.
く問題点を解決するための手段〉
上記目的を達成するための本発明の特徴とするところは
、フィードスクリュ又はロータを内嵌したシリンダの長
手方向に離間して友けら７′Ｌｅ主原料投入口と副原料
投入口から夫々シリンダ内に熱可塑性樹脂等の主原料と
ガラス繊維等の副原料を投入し、該シリンダ内で主原料
を溶融させた後、副原料と混合してシリンダ出口から押
出す押出機に於て、
前記溶融さｆ′Ｌ友主原料から発生する気体及び副原料
投入口からの空気ｔ、副原料投入口近傍［ｉけ九脱気口
から脱気しつつ、前記副原料投入口から副原料を投入す
る点Ｖｃある。Means for Solving the Problems> The present invention is characterized in that the feed screw or rotor is inserted at a distance in the longitudinal direction of the cylinder into which the feed screw or rotor is inserted. A main raw material such as a thermoplastic resin and an auxiliary raw material such as glass fiber are introduced into the cylinder from the mouth and the auxiliary raw material input port, and after the main raw material is melted in the cylinder, it is mixed with the auxiliary raw material and then released from the cylinder outlet. In the extruder, the gas generated from the melted main raw material and the air from the auxiliary raw material inlet are removed from the vicinity of the auxiliary raw material inlet [i] while being degassed from the deaeration port. There is a point Vc at which the auxiliary raw material is introduced from the auxiliary raw material input port.
く作 用〉
末完１ｑＶｃよれば、主原料投入口から主原料がシリン
グ内に投入され、該主原料はフィードスクリュ又はロー
タによシ搬送されつつ加熱、加圧されて溶融する。この
溶融状態の主原料に対して副原料投入口から副原料が投
入され、該投入された副原料と溶融した主原料は、フィ
ードスクリュ又はロータで搬送されつつ混合され、該混
合物はシリンダの先端に設けられた出口より押出される
。According to 1qVc, the main raw material is charged into the shilling from the main raw material input port, and the main raw material is heated, pressurized, and melted while being conveyed by the feed screw or rotor. The auxiliary raw material is inputted into the molten main raw material from the auxiliary raw material input port, and the input auxiliary raw material and the molten main raw material are mixed while being conveyed by a feed screw or rotor, and the mixture is transferred to the tip of the cylinder. It is extruded from the outlet provided in the.
副原料投入口近傍に設けられ几脱気口は、プロワ等で若
干の負圧ｔかけて吸引される。従って、溶融した主原料
から発生する水分や揮発物の気体は、脱気口から排出さ
れる。また脱気口からの吸引は、副原料投入口から脱気
口へと空気の流ｎｔ−生じさせる。従って、副原料投入
口は常に新鮮な空気にさらされると共に、従来のような
沸き上がシが防止されるので、副原料投入口においてブ
リッジ現象が生じず、円滑な投入が可能となる。A deaeration port provided near the auxiliary raw material input port applies a slight negative pressure t using a blower or the like and sucks the raw material. Therefore, moisture and volatile gases generated from the molten main raw material are discharged from the degassing port. In addition, the suction from the deaeration port causes a flow of air from the auxiliary raw material input port to the deaeration port. Therefore, the auxiliary raw material input port is always exposed to fresh air and the boiling up that occurs in the conventional method is prevented, so that no bridging phenomenon occurs at the auxiliary raw material input port, and smooth charging is possible.
く突施例〉 以下、本発明の詳細な説明する。Example The present invention will be explained in detail below.
第１因において、ＩＨは押出機のシリンダである。In the first factor, IH is the cylinder of the extruder.
このシリンダ（！１にフィードスクリュ（２）が回転自
在に内嵌されている。シリンダ１１１ Ｋは、その長手
方向に離間して主原料投入口（３）と副原料投入口１４
）が設けられている。主原料投入口（３］はシリンダ＋
１１の一端部に位置し、副原料投入口（４１は中途部に
位置し、主原料投入口＋３１とは反対側のシリンダ（１
］端部は出口＋ｆｉｌとされている。A feed screw (2) is rotatably fitted into this cylinder (!1).The cylinder 111K has a main raw material inlet (3) and an auxiliary raw material inlet 14 separated from each other in its longitudinal direction.
) is provided. The main raw material input port (3) is cylinder +
The auxiliary raw material input port (41 is located in the middle, and the cylinder (1) is located at one end of the main raw material input port +31
] The end is an outlet + fil.
主原料投入口（３）と副原料投入口（４）＠のシリンダ
（１１は、主原料溶融部（６１とされている゛。この溶
融部（６）のシリンダ＋１１には図示省略のヒータが取
付けられている。副原料投入口（４）と出口（５１の間
のシリンダ（１）には、第１混線部ｉ７１と第２混線部
ｉ８１が形成されている。The cylinders (11) of the main raw material input port (3) and the auxiliary raw material input port (4) are designated as the main raw material melting section (61).The cylinder +11 of this melting section (6) is equipped with a heater (not shown). A first cross-wire portion i71 and a second cross-wire portion i81 are formed in the cylinder (1) between the auxiliary raw material input port (4) and the outlet (51).
前記主原料溶融部（６１と副原料投入口（４）間のシリ
ンダ＋１１ Ｖｃ脱気口（９）が開設されている。また
第１混線部（７）と第２ａ練部（８１間のシリンダ（１
）にベントホール叫が囲設されている。A cylinder +11 Vc degassing port (9) is opened between the main raw material melting section (61) and the auxiliary material inlet (4). Also, a cylinder between the first mixing section (7) and the second a kneading section (81) is provided. (1
) is surrounded by a vent hole.
前記主原料投入口（３）にはシュー） ｆｌｌｉ ｔ−
介して主原料投入ホッパ隆が取付けられている。副原料
投入口１４）にもシュートＤａ ’に介して副原料投入
ホッパ賭が取付けられている。脱気口（９）には図示省
略の吸気プロワが接続されている。ペントホール［１０
１には図示省略の真空ポンプが接続されている。The main raw material input port (3) has a shoe)
The main raw material input hopper ridge is attached through the hopper. An auxiliary material input hopper is also attached to the auxiliary material input port 14) via a chute Da'. An intake blower (not shown) is connected to the deaeration port (9). Penthole [10
1 is connected to a vacuum pump (not shown).
上記槽底の押出機において、主原料投入口＋３１からポ
リプロピレン、ナイロン、ポリカーボネート等の熱可塑
性樹脂からなる主原料がシリンダ１１＋内に投入される
一投入された主原料は、フィードスクリュ（２）により
搬送されつつ溶融部ｆｉｌにおいて加熱、加圧されて溶
融する。このと色発生する水蒸気やその他の揮発物質の
気体は、脱気口（９）から外部へ脱気される。In the extruder at the bottom of the tank, the main raw material made of thermoplastic resin such as polypropylene, nylon, polycarbonate, etc. is input into the cylinder 11+ from the main raw material input port +31.The input main raw material is passed through the feed screw (2) While being transported, it is heated and pressurized in the melting section fil to melt. The water vapor and other volatile gases generated during this process are vented to the outside through the venting port (9).
上記脱気はプロワ等で脱気口（９）を着千〇負圧にして
行うので、Ｗ！１２図に示すように、副原料投入口（４
）から空気を吸い込む作用ｔな丁。従って、上記脱気口
（９）から脱気ｔしつつ、副原料投入口（４）から、ガ
ラス繊維、カーボン繊維、金属クイスカー、タルク、タ
ンカル等の副原料上投入すれば、投入口（４）には新鮮
な空気が流れるので流路に露結が生シス、ブリッジトラ
ブルが防止でき、安定した投入が可能となる。The above deaeration is performed by using a blower or the like to bring the deaeration port (9) to 1,000 negative pressure, so W! As shown in Figure 12, the auxiliary raw material input port (4
) The action of sucking air from the hole. Therefore, if auxiliary materials such as glass fiber, carbon fiber, metal cuiscar, talc, tankal, etc. are charged from the auxiliary raw material input port (4) while degassing from the deaeration port (9), ), fresh air flows through the flow path, preventing condensation and bridging problems in the flow path, allowing stable feeding.
このようにして投入され几副原料は、フィードスクリュ
（２）により溶融し念主原料と共に搬送されて、第１混
線部（））及び第２混練部ｆ８１において主原料と副原
料は均一に混合される。その際発生する気体は、ベント
ホール（１０）から外部へ排出され、完全に、かつ均一
に混合、混疎さｆ′した混合物は、出口（５１よシ押出
される。The auxiliary raw materials introduced in this way are melted by the feed screw (2) and conveyed together with the main raw materials, and the main raw materials and the auxiliary raw materials are uniformly mixed in the first mixing section ()) and the second kneading section f81. be done. The gas generated at this time is discharged to the outside from the vent hole (10), and the completely and uniformly mixed and mixed mixture f' is pushed out through the outlet (51).
尚、第３図に示すものは、副原料投入シュートα３１ｔ
−前後に分けて、その一方を脱気口（９）に形成し比も
のである。In addition, what is shown in FIG. 3 is an auxiliary raw material input chute α31t.
- It is divided into front and rear parts, and one side is formed as a degassing port (9).
ま次第４因に示すものは、脱気口（９）の中に、副原料
投入口（４）を設は友ものである。上記構成の押出機？
用いても同じ効果を得ることができる。The fourth reason is that the auxiliary raw material input port (4) is provided in the deaeration port (9). An extruder with the above configuration?
The same effect can be obtained by using
尚、本発明は、上記突施例に限定されるものではなく、
押出機として、単軸押出機、２軸混練押出機等、特に限
定されるものではなく、その他の型式のものであっても
よい。２軸混練押出機の場合、フィードスクリュに代え
ロータが使用される。It should be noted that the present invention is not limited to the above specific embodiments,
The extruder is not particularly limited, such as a single-screw extruder or a twin-screw kneading extruder, and other types may be used. In the case of a twin-screw kneading extruder, a rotor is used instead of a feed screw.
ま几、脱気口上プロワで吸引するものに限らず副原料投
入口側を加圧して押し込むものであっても同じ効果を得
ることができる。また、主原料も上記のものに限定され
るものではなく、気体？発生するものであれば、本発明
の対象となる。The same effect can be obtained not only by sucking with a blower over the deaeration port, but also by pressurizing the auxiliary material input port side. In addition, the main raw materials are not limited to those mentioned above, but may also be gases? If it occurs, it is covered by the present invention.
く発明の効果〉
本発明によれば、副原料投入口近傍１’Ｃ９けた脱気口
から脱気しつつ、副原料を投入するため、副原料投入口
から脱気口への空気の流れが生じ、副原料投入口からの
副原料投入上円滑ならしめるものである０Effects of the Invention According to the present invention, since the auxiliary raw material is introduced while being deaerated from the 1'C9-digit deaeration port near the auxiliary material input port, the air flow from the auxiliary material input port to the deaeration port is improved. This is to ensure smooth input of auxiliary raw materials from the auxiliary raw material input port.
第１因は本発明の実施に使用する押出機の断面図、第２
因は作用説明図、第６図及び第４図は本発明に使用する
他の押出機の要部断面図である。
Ｉｌ＋・・・シリンダ、１２）・・・フィードスクリュ
（又はロータ）、（３１・・・主原料投入口、１４）・
・・副ぶ料投入口、（９）・・・脱気口。The first factor is a cross-sectional view of the extruder used to carry out the present invention, and the second factor is
6 and 4 are sectional views of main parts of other extruders used in the present invention. Il+...Cylinder, 12)...Feed screw (or rotor), (31...Main raw material input port, 14)
...Vice charge inlet, (9)...Deaeration port.
Claims (1)
長手方向に離間して設けられた主原料投入口と副原料投
入口から夫々シリンダ内に熱可塑性樹脂等の主原料とガ
ラス繊維等の副原料を投入し、該シリンダ内で主原料を
溶融させた後、副原料と混合してシリンダ出口から押出
す押出機に於て、 前記溶融された主原料から発生する気体及び副原料投入
口からの空気を、副原料投入口近傍に設けた脱気口から
脱気しつつ、前記副原料投入口から副原料を投入するこ
とを特徴とする押出機における副原料投入方法。[Scope of Claims] 1. The main raw material such as thermoplastic resin and glass are introduced into the cylinder through the main raw material inlet and the auxiliary raw material inlet which are provided spaced apart in the longitudinal direction of the cylinder into which the feed screw or rotor is fitted. In the extruder, which inputs auxiliary raw materials such as fibers, melts the main raw materials in the cylinder, mixes them with the auxiliary raw materials, and extrudes the mixture from the cylinder outlet, the gas and auxiliary raw materials generated from the molten main raw materials are A method for inputting auxiliary raw materials in an extruder, characterized in that air from the raw material input port is degassed through a degassing port provided near the auxiliary raw material input port, and the auxiliary raw material is inputted from the auxiliary raw material input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60121213A JPS61277421A (en) | 1985-06-03 | 1985-06-03 | Loading method for auxiliary raw material in extrusion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60121213A JPS61277421A (en) | 1985-06-03 | 1985-06-03 | Loading method for auxiliary raw material in extrusion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61277421A true JPS61277421A (en) | 1986-12-08 |
Family
ID=14805675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60121213A Pending JPS61277421A (en) | 1985-06-03 | 1985-06-03 | Loading method for auxiliary raw material in extrusion machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61277421A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4892471A (en) * | 1988-09-23 | 1990-01-09 | Frito-Lay, Inc. | Steam venting extruder feeder |
| US4946356A (en) * | 1988-04-11 | 1990-08-07 | Toshiba Kikai Kabushiki Kaisha | Vent type injection molding machine |
| JPH05124088A (en) * | 1991-11-06 | 1993-05-21 | Japan Steel Works Ltd:The | Degassing method of cylinder for extruder and degassing structure |
| US5281379A (en) * | 1989-04-05 | 1994-01-25 | Kanebo, Ltd. | Processes for manufacturing thermoplastic resin compositions |
| WO2000066342A1 (en) * | 1999-04-30 | 2000-11-09 | Kyowa Hakko Kogyo Co., Ltd. | Method for producing resin molded article and apparatus for producing resin molded article |
| JP2007015382A (en) * | 2005-07-05 | 2007-01-25 | Johns Manville Internatl Inc | Method and system for producing long fibers reinforcing product and product obtained by the same |
| CN113771330A (en) * | 2021-09-14 | 2021-12-10 | 温州久田电子电气有限公司 | Plastic extruder |
-
1985
- 1985-06-03 JP JP60121213A patent/JPS61277421A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946356A (en) * | 1988-04-11 | 1990-08-07 | Toshiba Kikai Kabushiki Kaisha | Vent type injection molding machine |
| US4892471A (en) * | 1988-09-23 | 1990-01-09 | Frito-Lay, Inc. | Steam venting extruder feeder |
| US5281379A (en) * | 1989-04-05 | 1994-01-25 | Kanebo, Ltd. | Processes for manufacturing thermoplastic resin compositions |
| JPH05124088A (en) * | 1991-11-06 | 1993-05-21 | Japan Steel Works Ltd:The | Degassing method of cylinder for extruder and degassing structure |
| WO2000066342A1 (en) * | 1999-04-30 | 2000-11-09 | Kyowa Hakko Kogyo Co., Ltd. | Method for producing resin molded article and apparatus for producing resin molded article |
| JP2007015382A (en) * | 2005-07-05 | 2007-01-25 | Johns Manville Internatl Inc | Method and system for producing long fibers reinforcing product and product obtained by the same |
| CN113771330A (en) * | 2021-09-14 | 2021-12-10 | 温州久田电子电气有限公司 | Plastic extruder |
| CN113771330B (en) * | 2021-09-14 | 2023-08-29 | 温州久田电子电气有限公司 | plastic extruder |
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