JPH0211415B2 - - Google Patents
Info
- Publication number
- JPH0211415B2 JPH0211415B2 JP60159748A JP15974885A JPH0211415B2 JP H0211415 B2 JPH0211415 B2 JP H0211415B2 JP 60159748 A JP60159748 A JP 60159748A JP 15974885 A JP15974885 A JP 15974885A JP H0211415 B2 JPH0211415 B2 JP H0211415B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- vent port
- container
- degassing
- valve
- 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.)
- Expired - Lifetime
Links
- 229920005989 resin Polymers 0.000 claims description 52
- 239000011347 resin Substances 0.000 claims description 52
- 238000007872 degassing Methods 0.000 claims description 25
- 238000001125 extrusion Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000012662 bulk polymerization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000005406 washing Methods 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
- B29C48/76—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
- B29C48/50—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、脱気押出機のベント口より、溶融し
た樹脂を取り出すようにした脱気押出装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a degassing extrusion device that takes out molten resin from a vent port of a degassing extruder.
樹脂中に含まれる未反応モノマー、溶剤、副生
成物等の揮発性成分を除去することは、成形材料
あるいは押出成形品の製造において重要である。
Removal of volatile components such as unreacted monomers, solvents, and by-products contained in resins is important in the production of molding materials or extrusion molded products.
現在、樹脂中に含まれる揮発性成分を除去する
ための装置として、一軸もしくは多軸の脱気押出
機が使用されている。 Currently, single-screw or multi-screw degassing extruders are used as devices for removing volatile components contained in resins.
しかしながら、樹脂から揮発性成分を除去する
に使用されるスクリユ式の脱気押出機の脱気は、
通常押出機のバレルにベント口を設け、この部分
を真空系に接続して押出機内部の溶融樹脂を減圧
下に曝して脱気するため、スクリユ表面上の溶融
樹脂の一部が揮発性成分に同伴してベント口付近
にはみ出してくるいわゆるベントアツプ現象が起
る。 However, the degassing of screw-type degassing extruders used to remove volatile components from resins is
Usually, the barrel of the extruder has a vent port, and this part is connected to a vacuum system to expose the molten resin inside the extruder to a reduced pressure and degas it, so some of the molten resin on the surface of the screw is volatile. Along with this, a so-called vent up phenomenon occurs in which the air protrudes near the vent opening.
このように一旦ベントアツプして付着した樹脂
は、長時間の加熱により変質し、スクリユにまき
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、製品の品質を低下
させる欠点がある。 Once vented and adhered, the resin may deteriorate due to long-term heating and may be drawn into the screw, which often contaminates the inside of the extruder, reducing the quality of the product. There is.
この欠点を改良する方法として、例えばベント
アツプした樹脂をベント口より押出機の外へ取り
出す方法、あるいは押出機に供給される樹脂の一
部をベント口より連続的又は定期的に抜取つて、
ベント口付近にベントアツプした樹脂を長時間付
着滞留させず、また付着した樹脂を押出機の外へ
洗滌して取り出す方法等があげられる。 As a method to improve this drawback, for example, there is a method in which the vented resin is taken out of the extruder through the vent port, or a part of the resin supplied to the extruder is continuously or periodically withdrawn from the vent port.
Examples include a method in which the resin that has been vented up near the vent port is not allowed to remain there for a long time, and the resin that has adhered is washed out of the extruder and taken out.
しかし、上記の方法は、異物混入の少ない樹脂
をうるよい方法であるが、高温、減圧下にあるベ
ント口より溶融した樹脂を押出機の外へ効率よ
く、また押出し製品を汚染することなく連続的に
取り出すことは困難であり、これまでにこれらの
方法を実施するための脱気押出装置は開発されて
いない。 However, although the above method is a method that produces resin with less foreign matter contamination, it is possible to efficiently pump the molten resin out of the extruder through the vent port under high temperature and reduced pressure, and continuously without contaminating the extruded product. It is difficult to take out the gas in a vacuum, and no degassing extrusion equipment has been developed to date to carry out these methods.
本発明は、上述した如き状況に鑑み、スクリユ
式押出機のベント口より、ベントアツプした樹脂
あるいは洗滌抜取り用樹脂を効率よく、また押出
機の運転を中断することなく取り出すことのでき
る脱気押出装置を提供することにある。
In view of the above-mentioned circumstances, the present invention has developed a degassing extrusion device that can efficiently take out vent-up resin or resin for washing and extraction from the vent port of a screw type extruder without interrupting the operation of the extruder. Our goal is to provide the following.
本発明の脱気押出装置は、ベント口を有するス
クリユ式の脱気押出機において、ベント口に溶融
した樹脂を流下させて取り出す導管を接続すると
共に、さらに該導管に開閉弁及び開閉可能な扉を
持つ容器を順次配設したものよりなることを特徴
とする。
The degassing extrusion device of the present invention is a screw-type degassing extruder having a vent port, in which a conduit for making molten resin flow down and take out is connected to the vent port, and an on-off valve and an openable door are connected to the conduit. It is characterized by consisting of containers arranged in sequence.
以下、本発明の脱気押出装置を図面に基づいて
詳しく説明する。 Hereinafter, the degassing extrusion device of the present invention will be explained in detail based on the drawings.
第１図は本発明の実施の一例を示す一部切欠脱
気押出装置の正面図、第２図は第１図のＡ−
A′視要部拡大断面図、第３図〜第４図は他のベ
ント口の例を示す拡大断面図を示している。図
中、１はスクリユ式脱気押出装置、２はバレル、
３はスクリユ、４はベント口、５は導管、６は開
閉弁、７は開閉可能な扉をもつ容器、８は溶融樹
脂、９は受器、１０は連通管、１１は透視性開閉
扉、１２，１３，２０は弁、１４は排気口、１５
は樹脂供給口、１６はダイ、１７は駆動装置、１
８は透視窓、１９は圧力調節配管を示す。 FIG. 1 is a front view of a partially cut-out degassing extrusion device showing an example of the implementation of the present invention, and FIG. 2 is a
An enlarged sectional view of the main part viewed from A', and FIGS. 3 and 4 show enlarged sectional views showing other examples of vent ports. In the figure, 1 is a screw type degassing extrusion device, 2 is a barrel,
3 is a screw, 4 is a vent port, 5 is a conduit, 6 is an on-off valve, 7 is a container with a door that can be opened and closed, 8 is a molten resin, 9 is a receiver, 10 is a communication pipe, 11 is a transparent door, 12, 13, 20 are valves, 14 is an exhaust port, 15
1 is a resin supply port, 16 is a die, 17 is a drive device, 1
Reference numeral 8 indicates a see-through window, and reference numeral 19 indicates a pressure adjustment pipe.
本発明の脱気押出装置は、従来のスクリユ式脱
気押出機に特定構造の樹脂取り出し処理装置を付
設したもので、第２図に示すように、ベント口４
に導管５、開閉弁６及び側面に透視性開閉扉１１
をもつ容器７を順次連結させて連通するように
し、ベント口よりの溶融樹脂を導管５から容器７
内に流下させるようにしたものである。 The degassing extrusion device of the present invention is a conventional screw-type degassing extruder equipped with a resin extraction processing device of a specific structure, and as shown in FIG.
Conduit 5, opening/closing valve 6, and transparent opening/closing door 11 on the side.
Containers 7 having a
It was designed to flow inside.
本発明の装置において、溶融樹脂を外部へ取り
出すための導管５は、第１図〜第４図に示すよう
に、押出機のバレル２の側面又は下側に設けられ
たベント口４の下側に設けられる。この導管５
は、溶融樹脂を流下させてベント口４より取り出
しうる位置及び構造であれば特に限定されない
が、好ましくはベント口に近い位置に設けること
が再加熱の必要なしに容易に流下させうるのでよ
い。また導管５はベント口４の形状、大きさによ
り適宜選択出来、管状体のほか角状体等いずれで
もよい。 In the apparatus of the present invention, the conduit 5 for taking out the molten resin to the outside is located below the vent port 4 provided on the side or lower side of the barrel 2 of the extruder, as shown in FIGS. 1 to 4. established in This conduit 5
is not particularly limited as long as it has a position and structure that allows the molten resin to flow down and be taken out from the vent port 4, but it is preferable to provide it at a position close to the vent port because it allows the molten resin to flow down easily without the need for reheating. Further, the conduit 5 can be appropriately selected depending on the shape and size of the vent port 4, and may be a tubular body, a square body, or the like.
導管５に設ける開閉弁６はベント口４と容器７
とを連通もしくは遮断させるものである。この開
閉弁６は溶融した樹脂をうまく流下させ、かつベ
ント内の真空を遮断できるものであれば特に限定
されないが、コツク、仕切弁等が好ましく使用で
きる。 An on-off valve 6 provided in the conduit 5 connects the vent port 4 and the container 7.
It communicates with or blocks the communication. The on-off valve 6 is not particularly limited as long as it can properly flow down the molten resin and shut off the vacuum inside the vent, but a cock, gate valve, etc. can be preferably used.
容器７は、溶融流下した樹脂を受ける受器を収
納させておくためのものであり、容器７の一側面
には容器内が監視でき、かつ受器９を出し入れで
きるようにした透視性開閉扉１１が付設されてい
る。 The container 7 is for storing a receiver for receiving the resin that has melted and flowed down, and has a see-through opening/closing door on one side of the container so that the inside of the container can be monitored and the receiver 9 can be put in and taken out. 11 is attached.
受器９は、ベント口より流下する樹脂を受け、
取り出された樹脂を容器７より外へ取り出すため
のものである。 The receiver 9 receives the resin flowing down from the vent port,
This is for taking out the resin taken out from the container 7.
連通管１０は、ベント口４と容器７とを連通さ
せるものであり、導管５及び開閉弁６の内径が小
さく、溶融樹脂で閉塞される場合に用いられる。
また受器９中の樹脂を取り出した後、容器７内を
ベント口４と同一圧力に調圧する場合にも用いら
れる。 The communication pipe 10 allows the vent port 4 and the container 7 to communicate with each other, and is used when the inner diameter of the conduit 5 and the on-off valve 6 is small and is blocked by molten resin.
It is also used when the pressure inside the container 7 is adjusted to the same pressure as the vent port 4 after the resin in the receiver 9 is taken out.
ベント口４は、本発明を実施できる構造であれ
ば特に限定されないが、第２図〜第４図に示すよ
うに、押出機の側面又は下方に配置され、第１図
〜第３図に示すようにバレルの側面にベント口を
有する場合には、ベント口の下側を水平あるいは
下向きに傾斜させて樹脂の滞留をできるだけなく
すような方策をとるのがよい。ベント口の下側が
水平である場合には、その水平部の長さを10mm以
下とするのがよい。 The vent port 4 is not particularly limited as long as it has a structure that allows the present invention to be carried out, but as shown in FIGS. When the barrel has a vent port on the side surface, it is preferable to make the lower side of the vent port horizontally or slope downward to prevent resin from accumulating as much as possible. If the lower side of the vent port is horizontal, the length of the horizontal part should be 10 mm or less.
またベント口の位置は、特に限定されず、樹脂
原料の供給口１５の前方もしくは後方のいずれの
位置でもよく、１個もしくは２個以上の複数個を
設けてもよい。 Further, the position of the vent port is not particularly limited, and may be located either in front of or behind the resin raw material supply port 15, and one or more vent ports may be provided.
本発明の装置におけるスクリユは一軸あるいは
多軸のスクリユのいずれも使用できる。 The screw in the apparatus of the present invention can be either a single-shaft screw or a multi-shaft screw.
本発明の装置に用いる樹脂は、特に限定され
ず、未反応単量体、溶剤、副生成物等の揮発性成
分を70重量％以下含有する塊状重合、溶液重合及
び懸濁重合法等により得られる熱可塑性樹脂の
外、少量の揮発性成分を含有する樹脂の単独もし
くは樹脂組成物等いずれでもよい。この装置は、
透明性樹脂、例えばメタクリル樹脂、スチレン系
樹脂等の脱気押出に特に有用である。 The resin used in the apparatus of the present invention is not particularly limited, and is obtained by bulk polymerization, solution polymerization, suspension polymerization, etc. containing 70% by weight or less of volatile components such as unreacted monomers, solvents, and by-products. In addition to thermoplastic resins, resins containing small amounts of volatile components may be used alone or in resin compositions. This device is
It is particularly useful for degassing extrusion of transparent resins such as methacrylic resins and styrene resins.
次に、本発明の装置の一操作法をベントアツプ
した樹脂をベント口より外へ取り出す場合の一例
について説明する。 Next, an example of an operation method of the apparatus of the present invention in which vented resin is taken out from the vent port will be described.
排気口１４により所定の圧に減圧されているベ
ント口４において、ベントアツプが始まるとベン
ト口の外へ溶融した樹脂が出てくる。このベント
アツプ物を導管５方へ流し出して、導管５及び開
閉弁６を通し、容器７内の受器９中に流下させ
る。 When venting starts at the vent port 4, which has been reduced to a predetermined pressure by the exhaust port 14, molten resin comes out of the vent port. This vent-up material is flowed out toward the conduit 5, passes through the conduit 5 and the on-off valve 6, and flows down into the receiver 9 in the container 7.
導管５及び開閉弁６は、樹脂の流動性を保つた
め、あるいは向上させるために加熱する。加熱方
法は、図示していないが電気ヒータあるいは熱媒
加熱あるいはその他の方法のいずれでもよい。ま
た容器７は凝縮しない温度以上に加熱して容器内
での凝縮を防ぐようにする。 The conduit 5 and the on-off valve 6 are heated in order to maintain or improve the fluidity of the resin. Although not shown, the heating method may be an electric heater, heat medium heating, or any other method. Further, the container 7 is heated to a temperature above which condensation does not occur to prevent condensation within the container.
この状態を継続し、容器７の透視性開閉扉１１
より受器９内の樹脂のたまり具合を監視する。受
器９に樹脂がある程度たまつた時点で、開閉弁６
及び弁１２を閉じ、弁１３を開放して容器７内を
常圧に戻し、扉１１を開けて、樹脂のたまつた受
器９を取り出すと共に、別の受器９′を入れて閉
じる。この操作を脱気押出装置の運転中くり返
す。 Continuing this state, the transparent opening/closing door 11 of the container 7
The amount of resin accumulated in the receiver 9 is monitored. When a certain amount of resin has accumulated in the receiver 9, the on-off valve 6
Then, the valve 12 is closed, the valve 13 is opened to return the inside of the container 7 to normal pressure, the door 11 is opened, the receiver 9 with accumulated resin is taken out, another receiver 9' is put in, and the container 7 is closed. This operation is repeated while the degassing extrusion device is in operation.
交換した受器９内への樹脂の流下は、弁１３を
閉じ、弁１２を開いて、容器７内の圧力をベント
口４と同一圧力に調圧した後、開閉弁６を開くこ
とにより行うことができる。なお容器７内の圧力
調節は、圧力調節配管１９及び弁２０で行うこと
もできる。 The resin flows down into the replaced receiver 9 by closing the valve 13, opening the valve 12, adjusting the pressure inside the container 7 to the same pressure as the vent port 4, and then opening the on-off valve 6. be able to. Note that the pressure inside the container 7 can also be adjusted using the pressure adjustment piping 19 and the valve 20.
また、ベント口より、樹脂の一部を連続的又は
定期的により取り出す場合には、押出条件を変更
して積極的にベントアツプさせ、そのベントアツ
プ物を上述の如き方法で脱気押出装置の外へ取り
出すことができる。 In addition, when taking out a part of the resin continuously or periodically from the vent port, change the extrusion conditions to actively vent it, and then remove the vented material from the degassing extrusion equipment using the method described above. It can be taken out.
以上詳述した如き構造を有する本発明の脱気押
出装置は、樹脂中の揮発性成分を脱気すると共
に、ベント口より出る樹脂をうまく該装置の外へ
取り出すことができるので、ベント部で発出する
劣化し、着色した樹脂の製品中への混入が顕著に
低減され、きめて品質のすぐれた樹脂成形品をう
ることができ、また樹脂をベント口より連続的に
取り出す運転方法の場合でも、押出機の運転停止
を不要にし、長期連続運転を可能にすることがで
きる。
The degassing extrusion device of the present invention having the structure detailed above can degas the volatile components in the resin, and can also take out the resin exiting from the vent port to the outside of the device. The contamination of the emitted degraded and colored resin into the product is significantly reduced, making it possible to obtain resin molded products of excellent quality, even in the case of an operating method in which resin is continuously taken out from the vent port. , it is possible to eliminate the need to stop the extruder and enable long-term continuous operation.
第１図は本発明の実施の一例を示す一部切欠脱
気押出装置の正面図、第２図は第１図に示す装置
のＡ−A′視要部拡大断面図、第３図及び第４図
は他のベント口の例を示す拡大断面図である。
１……スクリユ式脱気押出装置、２……バレ
ル、３……スクリユ、４……ベント口、５……導
管、６……開閉弁、７……容器、８……溶融樹
脂、９……受器、１０……連通管、１１……透視
性開閉扉、１２，１３，２０……弁、１４……排
気口、１５……樹脂供給口、１６……ダイ、１７
……駆動装置、１８……透視窓、１９……圧力調
節配管。
FIG. 1 is a front view of a partially cut-out degassing extrusion device showing an example of the implementation of the present invention, FIG. 2 is an enlarged sectional view of the main part of the device shown in FIG. FIG. 4 is an enlarged sectional view showing another example of a vent port. DESCRIPTION OF SYMBOLS 1... Screw-type degassing extrusion device, 2... Barrel, 3... Screw, 4... Vent port, 5... Conduit, 6... On-off valve, 7... Container, 8... Molten resin, 9... ... Receiver, 10 ... Communication pipe, 11 ... Transparent opening/closing door, 12, 13, 20 ... Valve, 14 ... Exhaust port, 15 ... Resin supply port, 16 ... Die, 17
...Drive device, 18...See-through window, 19...Pressure adjustment piping.
Claims (1)
おいて、ベント口に溶融した樹脂を流下させて取
り出す導管を接続すると共に、さらに該導管に開
閉弁及び開閉可能な扉を持つ容器を順次配設して
なる脱気押出装置。 ２ ベント口と開閉可能な扉をもつ容器の間に連
通管を配設し、その連通管に開閉弁及び開閉可能
な扉をもつ容器内の圧力を大気圧に解放するため
の開閉弁を付設したことを特徴とする特許請求の
範囲第１項記載の脱気押出装置。 ３ 開閉可能な扉をもつ容器内の圧力を大気圧か
ら真空圧まで自由に調節できる配管系に付設して
なる特許請求の範囲第１項記載の脱気押出装置。 ４ 開閉可能な扉をもつ容器内に、取り出し可能
な溶融した樹脂の受器を収納してなる特許請求の
範囲第１項記載の脱気押出装置。[Scope of Claims] 1. A screw-type degassing extruder having a vent port, in which a conduit through which the molten resin flows down and is taken out is connected to the vent port, and the conduit is further provided with an on-off valve and a door that can be opened and closed. A degassing extrusion device consisting of containers arranged in sequence. 2. A communication pipe is installed between the vent port and a container with a door that can be opened and closed, and an on-off valve is attached to the communication pipe to release the pressure inside the container with a door that can be opened and closed to atmospheric pressure. A degassing extrusion device according to claim 1, characterized in that: 3. The degassing extrusion device according to claim 1, which is attached to a piping system that can freely adjust the pressure inside the container from atmospheric pressure to vacuum pressure with a door that can be opened and closed. 4. The degassing extrusion device according to claim 1, wherein a removable molten resin receiver is housed in a container having an openable/closable door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60159748A JPS6219428A (en) | 1985-07-19 | 1985-07-19 | Vent type extruding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60159748A JPS6219428A (en) | 1985-07-19 | 1985-07-19 | Vent type extruding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6219428A JPS6219428A (en) | 1987-01-28 |
| JPH0211415B2 true JPH0211415B2 (en) | 1990-03-14 |
Family
ID=15700404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60159748A Granted JPS6219428A (en) | 1985-07-19 | 1985-07-19 | Vent type extruding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6219428A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0681920U (en) * | 1993-05-07 | 1994-11-25 | 株式会社トーヨーテクノコーポレーション | Pollution-free container |
| US6562936B1 (en) | 1999-07-06 | 2003-05-13 | Teijin Limited | Apparatus and method for producing resin |
| CN102001171B (en) * | 2010-10-13 | 2013-04-10 | 常州丰盛光电科技股份有限公司 | Uninterrupted pollution discharge device and method for light guide plate (LGP) production system |
-
1985
- 1985-07-19 JP JP60159748A patent/JPS6219428A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6219428A (en) | 1987-01-28 |
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