JPH0444826A - Screw extruder - Google Patents
Screw extruderInfo
- Publication number
- JPH0444826A JPH0444826A JP2151479A JP15147990A JPH0444826A JP H0444826 A JPH0444826 A JP H0444826A JP 2151479 A JP2151479 A JP 2151479A JP 15147990 A JP15147990 A JP 15147990A JP H0444826 A JPH0444826 A JP H0444826A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- additive
- cylinder
- molding material
- supply passage
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 239000012778 molding material Substances 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000654 additive Substances 0.000 abstract description 53
- 230000000996 additive effect Effects 0.000 abstract description 44
- 229920005989 resin Polymers 0.000 abstract description 12
- 239000011347 resin Substances 0.000 abstract description 12
- 239000008188 pellet Substances 0.000 abstract description 11
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic 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
- B29C48/50—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
- B29C48/51—Screws with internal flow passages, e.g. for molten material
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、樹脂材料とその添加剤とを別々に供給するこ
とにより、成形材料を安定して押し出すことが可能なス
クリュー押出機に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a screw extruder capable of stably extruding a molding material by separately feeding a resin material and its additives.
〈従来の技術〉
主として熱可塑性の合成樹脂を所定の形状に製造する際
には、スクリュー押出機等を用いてベレット状をなす原
料を溶融させながら混練し、目的とする形状に賦形させ
る。この場合、成形材料に特別な機能、例えば粘着性や
非付着性等を持たせるため、目的とする機能に合致した
添加剤を原料と共に混練することが一般に行われている
。<Prior Art> When producing a thermoplastic synthetic resin into a predetermined shape, a screw extruder or the like is used to melt and knead pellet-shaped raw materials and form them into the desired shape. In this case, in order to impart special functions to the molding material, such as adhesiveness and non-stick properties, it is common practice to knead additives that match the desired functions with the raw materials.
このような従来のスクリュー押出機の概略構造を表す第
３図に示すように、一端側に樹脂ベレット１が供給され
るホッパ２を連結したシリンダ３には、螺旋状のフライ
ト４を外周面に形成したスクリュー５が回転自在に収納
され、このスクリュー５の一端側には、当該スクリュー
５を駆動する図示しない駆動源が減速機６を介して連結
されている。前記ホッパ２の下端部には、このホッパ２
の壁面を貫通して下端がホッパ２直）のシリンダ３とス
クリュー５との間に形成された供給部７に開口する添加
剤供給管８が設けられており、シリンダ３の他端側に接
続づる図示しない押出ダイ側に押し出される成形材料に
粘着性等の特別な性質を持たせるだめの図示し２ない添
加剤がこの添加剤供給管８から供給されるようになって
いる。As shown in FIG. 3, which schematically shows the structure of such a conventional screw extruder, a cylinder 3 is connected to a hopper 2 to which a resin pellet 1 is supplied at one end, and a spiral flight 4 is provided on the outer peripheral surface of the cylinder 3. The formed screw 5 is rotatably housed, and a drive source (not shown) for driving the screw 5 is connected to one end of the screw 5 via a speed reducer 6 . At the lower end of the hopper 2, there is a
An additive supply pipe 8 is provided that penetrates the wall surface and opens into a supply section 7 formed between the cylinder 3 whose lower end is directly connected to the hopper 2 and the screw 5, and is connected to the other end of the cylinder 3. An additive (not shown) is supplied from this additive supply pipe 8 to impart special properties such as stickiness to the molding material extruded to the extrusion die (not shown).
なお、添加剤の供給方法としては、上述［また第３図に
示すもの以外に、シリンダ３の内壁に添加剤供給通路を
形成したものも知られている。As a method for supplying additives, in addition to the method described above [and shown in FIG. 3], a method in which an additive supply passage is formed in the inner wall of the cylinder 3 is also known.
〈発明が解決しようとする問題点〉
樹脂ベレットに粘着性を向上させる目的の添加剤を混合
する場合、第３図に示す従来のスクリュー押出機におい
ては、添加剤をホッパ２側から投入しているため、樹脂
ベレット１が供給部７で塊状になってしまったり、シリ
ンダ３の内壁やスクリ。−５に粘りついてしまい、成形
材料を押出ダイ側へ安定しで押し出すことが困難となる
場合があった。<Problems to be Solved by the Invention> When mixing additives for the purpose of improving tackiness with resin pellets, in the conventional screw extruder shown in Fig. 3, the additives are introduced from the hopper 2 side. As a result, the resin pellet 1 may become lumpy in the supply section 7, or the inner wall of the cylinder 3 or the screen may be damaged. In some cases, the molding material became sticky, making it difficult to stably extrude the molding material toward the extrusion die.
又、添加剤供給通路をシリンダの内壁に形成したもので
は、高圧化するシリンダの強度低下を防止するために、
必然的にシリンダの内壁を厚肉に形成する必要があり、
装置重量が嵩んでしまう。しかも、シリンダに組付１プ
られて樹脂ベレットを加熱溶融させる加熱装置の配置等
に制約が生ずる虞があった。In addition, in the case where the additive supply passage is formed on the inner wall of the cylinder, in order to prevent the strength of the cylinder from decreasing due to high pressure,
It is necessary to make the inner wall of the cylinder thick,
The weight of the device increases. Moreover, there is a risk that restrictions may arise in the arrangement of a heating device that heats and melts the resin pellet that is assembled into the cylinder.
〈発明の目的〉 本発明は、成形材料を安定して押し出すＪ。<Purpose of the invention> The present invention is capable of stably extruding a molding material.
とが可能で、しかも軽量で加熱装置の配置等に制約のな
いスクリュー押出機を提供することを目的とする。It is an object of the present invention to provide a screw extruder that is lightweight and has no restrictions on the arrangement of a heating device, etc.
〈問題点を解決するための手段〉
第１番目の本発明によるスクリュー押出機は、一端側に
成形材料が投入されるホッパを有すると共に他端側に押
出ダイか連結されたシリンダと、このシリンダ内に回転
自在に組み込まれ且つ一端側が駆動源に接続すると共に
他端側か前記押出ダイに臨むスクリューとを有するスク
リュー押出機において、前記スクリュー内に形成されて
一端側がこのスクリューの前記＝−一端側開Ｌ］すると
共に他端側が当該スクリ、−の前記他端側の外周面に開
口する流体供給通路と、この流体供給通路の前記一端側
に接続して当該流体供給通路内に流体を送り込む流体供
給源とを具えたものである。<Means for Solving the Problems> The screw extruder according to the first aspect of the present invention includes a cylinder having a hopper at one end into which a molding material is charged and connected to an extrusion die at the other end; In a screw extruder, the screw is rotatably incorporated in the screw, and has one end connected to a drive source and the other end facing the extrusion die. side opening L] and the other end side opens to the outer circumferential surface of the other end side of the screen, and the fluid supply passage is connected to the one end side of the fluid supply passage to feed fluid into the fluid supply passage. and a fluid supply source.
又、第２番目の本発明によるスクリュー押出機は、第１
番目の発明の構成に加えて、流体供給通路の途中に介装
されて成形材料が流体供給源側へ逆流するのを防止する
逆止め弁とを具えたものである。Further, the second screw extruder according to the present invention is a screw extruder according to the first invention.
In addition to the configuration of the second aspect of the invention, the present invention further includes a check valve interposed in the middle of the fluid supply passage to prevent the molding material from flowing back toward the fluid supply source.
〈作用〉
成形材料は、ホッパからシリンダとスクリューとの間の
供給部に装入され、駆動源によるスクリューの回転に伴
って、この供給部に接続するシリンダとスクリューとの
間に形成された圧縮部及び計量化部へと順に送り込まれ
て行（。<Operation> The molding material is charged from the hopper into the supply section between the cylinder and the screw, and as the screw is rotated by the drive source, the compression formed between the cylinder connected to this supply section and the screw is compressed. and the quantification section.
一方、流体供給源から送り込まれる添加剤等の流体は、
スクリュー内に形成された流体供給通路を通り、この流
体供給通路の他端側からシリンダとスクリューとの間に
形成された圧縮部或いは計量化部にて成形材料と合流す
る。この圧縮部や計量化部では、成形材料は半溶融状態
或いは完全な溶融状態となっており、ここで流体は成形
材料中に分散し、成形材料と充分に混練される。On the other hand, fluids such as additives sent from a fluid supply source are
It passes through a fluid supply passage formed within the screw, and joins the molding material from the other end of the fluid supply passage at a compression section or a metering section formed between the cylinder and the screw. In the compression section and metering section, the molding material is in a semi-molten state or completely molten state, and the fluid is dispersed in the molding material and thoroughly kneaded with the molding material.
このようにして流体と混練された成形材料は、シリンダ
の他端側に接続する押出ダイ側に連続的に押し出される
。The molding material kneaded with the fluid in this manner is continuously extruded to the extrusion die connected to the other end of the cylinder.
なお、流体供給通路の他端側に逆止め弁を組み込んだも
のでは、圧縮部や計量化部の圧力が流体供給通路の圧力
よりも高くなった場合でも、圧縮部や計量化部に位置す
る成形材料が流体供給通路内に逆流しまうような虞はな
い。In addition, if a check valve is installed at the other end of the fluid supply passage, even if the pressure in the compression part or metering part becomes higher than the pressure in the fluid supply passage, the check valve located in the compression part or metering part There is no possibility that the molding material will flow back into the fluid supply passage.
〈実施例〉
本発明によるスクリュー押出機を粘着性フィルムの成形
用に応用した一実施例の概略断面構造を表す第１図及び
その流体供給通路の先端側を抽出拡大した第２図に示す
ように、一端側（図中、右側）に成形材料である高圧ポ
リエチレン等の樹脂ベレット１１が供給されるホッパ１
２を連結したシリンダ１３には、螺旋状のフライト１４
を外周面に形成したスクリュー１５が回転自在に収納さ
れており、このスクリュー１５の一端側には、当該スク
リュー１５を駆動する図示しない駆動源が減速機１６を
介して連結されている。<Example> As shown in FIG. 1, which shows a schematic cross-sectional structure of an example in which the screw extruder according to the present invention is applied to molding an adhesive film, and FIG. A hopper 1 is supplied with a resin pellet 11 such as high-pressure polyethylene as a molding material at one end (on the right side in the figure).
The cylinder 13 that connects the two has a spiral flight 14.
A screw 15 having an outer circumferential surface formed thereon is rotatably housed, and a drive source (not shown) for driving the screw 15 is connected to one end of the screw 15 via a speed reducer 16 .
前記スクリュー１５内には、このスクリュー１５の一端
側から他端側にかけて添加剤供給通路１７が形成されて
おり、この添加剤供給通路１７の一端側には、シリンダ
１３の他端側に連結した図示しない押出ダイ側に押し出
される成形材料の粘着性を向上させるニッサンボリブテ
ン（商品名二日本油脂株式会社）等の液状をなす添加剤
１８を貯溜する添加剤タンク１９が、回転継手２０及び
添加剤供給管２１を介して接続している。又、この添加
剤供給管１９の途中には、添加剤タンク１９内の添加剤
１８を添加剤供給通路１７側に圧送する添加剤供給ポン
プ２２が介装されている。An additive supply passage 17 is formed in the screw 15 from one end of the screw 15 to the other end. An additive tank 19 that stores a liquid additive 18 such as Nissan Bolybutene (trade name Nippon Oil & Fats Co., Ltd.) that improves the adhesion of the molding material extruded to the extrusion die side (not shown) is connected to the rotary joint 20 and the additive tank 19. They are connected via a agent supply pipe 21. Further, an additive supply pump 22 is interposed in the middle of the additive supply pipe 19 for pumping the additive 18 in the additive tank 19 to the additive supply passage 17 side.
一方、前記添加剤供給通路１７の他端側（図中、左側）
には、スクリュー１５の外周面に開口してシリンダ１３
とスクリュー１５との間の計量化部２３に臨む添加剤噴
出通路２４が放射状に形成されている。本実施例では、
四本の添加剤噴出通路２４を添加剤供給通路１７の周囲
に等間隔に形成しているが、少なくとも一本あれば良い
。又、添加剤噴出通路２４をシリンダ１３とスクリュー
１５との間の圧縮部２５に開口させることも可能である
。これら添加剤噴出通路２４には、計量化部２３から添
加剤供給通路Ｉ７側への成形材料の逆流を防止する鋼球
等のポール２６を用いた逆止め弁２７と、この逆止め弁
２７を構成するボール２６が計量化部２３へ脱落するの
を防止する環状のボールストッパ２８とが介装されてい
る。On the other hand, the other end side of the additive supply passage 17 (left side in the figure)
The cylinder 13 is opened on the outer peripheral surface of the screw 15.
An additive jetting passage 24 facing the metering section 23 between the screw 15 and the screw 15 is formed radially. In this example,
Although four additive ejection passages 24 are formed at equal intervals around the additive supply passage 17, it is sufficient that there is at least one. Further, it is also possible to open the additive injection passage 24 into the compression section 25 between the cylinder 13 and the screw 15. These additive injection passages 24 are provided with a check valve 27 using a pole 26 such as a steel ball to prevent backflow of the molding material from the metering part 23 to the additive supply passage I7 side, and a check valve 27 using a pole 26 such as a steel ball. An annular ball stopper 28 is interposed to prevent the constituent balls 26 from falling into the metering section 23.
従って、樹脂ベレット１１がホッパ１２からシリンダ１
３とスクリュー１５との間に形成された供給部２９に装
入されると、駆動源１６の作動によるスクリュー１５の
回転に伴って、樹脂ベレット１１はこの供給部２９に接
続する圧縮部２５及び計量化部２３へと送られて行く間
に加熱軟化して次第に空隙部分が少なくなり、推進力が
与えられる。Therefore, the resin pellet 11 is transferred from the hopper 12 to the cylinder 1.
When the resin pellet 11 is charged into the supply section 29 formed between the supply section 3 and the screw 15, as the screw 15 rotates due to the operation of the drive source 16, the resin pellet 11 is inserted into the compression section 25 and the screw 15 connected to the supply section 29. While being sent to the metering section 23, it is heated and softened, and the gap gradually decreases, giving it a propulsion force.
一方、添加剤タンク１９から送り込まれる添加剤１８は
、スクリュー１５内に形成された添加剤供給通路１７及
び添加剤噴出通路２４を通り、計量化部２３にて成形材
料と合流する。そして、この計量化部２３にて添加剤１
８が成形材料中に分散し、これらが充分に混練されてシ
リンダ１３の他端側に接続する押出ダイ側へ連続的に押
し出される。On the other hand, the additive 18 sent from the additive tank 19 passes through the additive supply passage 17 and the additive injection passage 24 formed in the screw 15 and joins the molding material at the metering section 23. Then, in this metering section 23, the additive 1 is
8 are dispersed in the molding material, and these are sufficiently kneaded and continuously extruded to the extrusion die side connected to the other end side of the cylinder 13.
なお、計量化部２３内の圧力が添加剤供給通路１７或い
は添加剤噴出通路２４のＢ−力よりも高くなった場合で
も、添加剤供給通路１７の他端側に逆止め弁２７が組み
込まれているため、計量化部２３内の成形材料が添加剤
供給通路１７側に逆流してしまうような虞はない。Note that even if the pressure inside the metering section 23 becomes higher than the B-force of the additive supply passage 17 or the additive injection passage 24, a check valve 27 is installed at the other end of the additive supply passage 17. Therefore, there is no possibility that the molding material in the metering section 23 will flow back into the additive supply passage 17 side.
なお、本実施例では成形材料の粘着性を向上させる添加
剤を本発明の流体として説明したが、成形材料の粘着性
に影響のない他の添加剤等を供給する場合には、添加剤
噴出通路２４をシリ：ノダ１３とスクリュー１５との間
の供給部２９に開口させることも当然可能である。In addition, in this example, the additive that improves the tackiness of the molding material was explained as the fluid of the present invention, but when supplying other additives that do not affect the tackiness of the molding material, additive jetting may be used. Naturally, it is also possible for the passage 24 to open into the feed section 29 between the screw 13 and the screw 15.
〈発明の効果〉
本発明のスクリュー押出機によると、流体供給通路をス
クリュー内に形成し２、添加剤等の流体を推進力が与え
られた原料に対しで供給するようにしたので、粘着性を
向上させる添加剤を供給するようにした場合でも、従来
のように供給部で樹脂ベレットが塊状になつたり、この
樹脂べＬ２・ツトがシリンダ内壁やスクリューに粘りつ
いでしまうようへ不υ、合が発生セす、成形材料を安定
しで押し出すことができる。<Effects of the Invention> According to the screw extruder of the present invention, a fluid supply passage is formed in the screw 2, and fluids such as additives are supplied to the raw material to which propulsive force is applied, so that adhesiveness is reduced. Even if additives that improve When this happens, the molding material can be extruded stably.
又、流体供給通路をシリンダの内壁に形成せず、スクリ
ュー内に形成するようにしｆ：、 にりで、シリンダに
刻して組付けられる加熱、装置の設置上７の制約が全く
なく、装置重量の増加を抑えることが可能である。In addition, the fluid supply passage is not formed on the inner wall of the cylinder, but is formed inside the screw.There is no restriction on the installation of the heating device, which requires cutting the cylinder with glue and assembling it. It is possible to suppress an increase in weight.
第１図は本発明によるスクリュー押出機の−・実施例の
概略構造を表す概念図、第２図はその添加剤供給通路の
先端側を抽出拡大した断面図、第３図は従来のスクリュ
ー押出機の概略構造を表す概念図である。
又、図中の符号で１１は樹脂ベレット、１２はホッパ、
１３はシリンダ、Ｉ５はスクリュー１７は添加剤供給通
路、Ｉ８は添加剤、１９は添加剤タンク、２１は添加剤
供給通路、２２は添加剤供給ポンプ、２４は添加剤噴出
通路、２７は逆止め弁である。Fig. 1 is a conceptual diagram showing the schematic structure of an embodiment of the screw extruder according to the present invention, Fig. 2 is an enlarged sectional view of the tip side of the additive supply passage, and Fig. 3 is a conventional screw extruder. FIG. 2 is a conceptual diagram showing the schematic structure of the machine. Also, in the figures, 11 is a resin pellet, 12 is a hopper,
13 is a cylinder, I5 is a screw, 17 is an additive supply passage, I8 is an additive, 19 is an additive tank, 21 is an additive supply passage, 22 is an additive supply pump, 24 is an additive jetting passage, 27 is a check It is a valve.
Claims (3)
共に他端側に押出ダイが連結されたシリンダと、このシ
リンダ内に回転自在に組み込まれ且つ一端側が駆動源に
接続すると共に他端側が前記押出ダイに臨むスクリュー
とを有するスクリュー押出機において、前記スクリュー
内に形成されて一端側がこのスクリューの前記一端側に
開口すると共に他端側が当該スクリューの前記他端側の
外周面に開口する流体供給通路と、この流体供給通路の
前記一端側に接続して当該流体供給通路内に流体を送り
込む流体供給源とを具えたスクリュー押出機。(1) A cylinder that has a hopper at one end into which the molding material is introduced and is connected to an extrusion die at the other end; the cylinder is rotatably built into the cylinder; one end is connected to a drive source, and the other end is connected to a drive source. In a screw extruder having a screw facing the extrusion die, a fluid is formed in the screw and has one end opening to the one end side of the screw and the other end opening to the outer circumferential surface of the other end side of the screw. A screw extruder comprising a supply passage and a fluid supply source connected to the one end of the fluid supply passage and feeding fluid into the fluid supply passage.
共に他端側に押出ダイが連結されたシリンダと、このシ
リンダ内に回転自在に組み込まれ且つ一端側が駆動源に
接続すると共に他端側が前記押出ダイに臨むスクリュー
とを有するスクリュー押出機において、前記スクリュー
内に形成されて一端側がこのスクリューの前記一端側に
開口すると共に他端側が当該スクリューの前記他端側の
外周面に開口する流体供給通路と、この流体供給通路の
前記一端側に接続して当該流体供給通路内に流体を送り
込む流体供給源と、前記流体供給通路の途中に介装され
て前記成形材料が前記流体供給源側へ逆流するのを防止
する逆止め弁とを具えたスクリュー押出機。(2) A cylinder that has a hopper at one end into which the molding material is introduced and is connected to an extrusion die at the other end; the cylinder is rotatably built into the cylinder, and one end is connected to a drive source and the other end is connected to the extrusion die. In a screw extruder having a screw facing the extrusion die, a fluid is formed in the screw and has one end opening to the one end side of the screw and the other end opening to the outer circumferential surface of the other end side of the screw. a supply passage; a fluid supply source connected to the one end side of the fluid supply passage to send fluid into the fluid supply passage; and a fluid supply source interposed in the middle of the fluid supply passage so that the molding material is supplied to the fluid supply source side A screw extruder equipped with a check valve to prevent backflow.
外周面に放射状をなして複数の開口に分岐していること
を特徴とする請求項（１）又は請求項（２）に記載した
スクリュー押出機。(3) According to claim (1) or claim (2), the other end of the fluid supply passage branches into a plurality of openings in a radial manner on the outer peripheral surface of the other end of the screw. Screw extruder as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2151479A JPH0444826A (en) | 1990-06-12 | 1990-06-12 | Screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2151479A JPH0444826A (en) | 1990-06-12 | 1990-06-12 | Screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444826A true JPH0444826A (en) | 1992-02-14 |
Family
ID=15519406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2151479A Pending JPH0444826A (en) | 1990-06-12 | 1990-06-12 | Screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444826A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002205319A (en) * | 2001-01-11 | 2002-07-23 | Sekisui Chem Co Ltd | Apparatus for molding thermoplastic resin molding |
| US20170050366A1 (en) * | 2014-05-08 | 2017-02-23 | Toshiba Kikai Kabushiki Kaisha | Kneading apparatus and kneading method |
| US20210154906A1 (en) * | 2014-05-08 | 2021-05-27 | Toshiba Kikai Kabushiki Kaisha | Extruder screw having paths within the screw, extruder, and extrusion method |
-
1990
- 1990-06-12 JP JP2151479A patent/JPH0444826A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002205319A (en) * | 2001-01-11 | 2002-07-23 | Sekisui Chem Co Ltd | Apparatus for molding thermoplastic resin molding |
| US20170050366A1 (en) * | 2014-05-08 | 2017-02-23 | Toshiba Kikai Kabushiki Kaisha | Kneading apparatus and kneading method |
| US20210154906A1 (en) * | 2014-05-08 | 2021-05-27 | Toshiba Kikai Kabushiki Kaisha | Extruder screw having paths within the screw, extruder, and extrusion method |
| US11565440B2 (en) * | 2014-05-08 | 2023-01-31 | Shibaura Machine Co., Ltd. | Kneading apparatus with first and second extruders |
| US11752682B2 (en) | 2014-05-08 | 2023-09-12 | Shibaura Machine Co., Ltd. | Extruder screw having paths within the screw, extruder, and extrusion method |
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