JP2018144481A - 混練装置及び混練物の製造方法 - Google Patents
混練装置及び混練物の製造方法 Download PDFInfo
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- B29B7/487—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with consecutive casings or screws, e.g. for feeding, discharging, mixing
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- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
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- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
- B29B7/489—Screws
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
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- B29B7/625—Rollers, e.g. with grooves provided with cooling or heating means
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29B7/00—Mixing; Kneading
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- B29B7/94—Liquid charges
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- 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
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- B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/802—Heating
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- 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
- B29C48/92—Measuring, controlling or regulating
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- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2948/9239—Screw or gear
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- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
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Abstract
Description
また、室温状態の可塑剤をサイドフィードすると、サイドフィード口付近の混練部と原料が可塑剤により急冷される。このため、サイドフィード口付近の原料の粘度が局所的に高くなり、混練機の吐出性が不安定になるという問題がある。さらに、上記のように原料と可塑剤との好適な混練が阻害された状態から混練状態を良化するためには、サイドフィード口よりも下流の樹脂混練部の寸法を長くしたり、樹脂混練部での原料の滞留時間を長くしたりする必要があり、原料への可塑剤の混練の生産性の低下を招くことがあった。
以下、実施形態1に係るリチウムイオン二次電池、電池用のセパレータ、耐熱セパレータ、耐熱セパレータ製造方法、スリット装置、切断装置について順に説明する。
リチウムイオン二次電池に代表される非水電解液二次電池は、エネルギー密度が高く、それゆえ、現在、パーソナルコンピュータ、携帯電話、携帯情報端末等の機器、自動車、航空機等の移動体に用いる電池として、また、電力の安定供給に資する定置用電池として広く使用されている。
セパレータ12は、リチウムイオン二次電池1の正極であるカソード11と、その負極であるアノード13との間に、これらに挟持されるように配置される。セパレータ12は、カソード11とアノード13との間を分離しつつ、これらの間におけるリチウムイオンの移動を可能にする多孔質フィルムである。セパレータ12は、その材料として、例えば、ポリエチレン、ポリプロピレン等のポリオレフィンを含む。
図3は、図1に示されるリチウムイオン二次電池1の他の構成を示す模式図であって、(a)は通常の構成を示し、(b)はリチウムイオン二次電池1が急激に昇温したときの様子を示す。
リチウムイオン二次電池1の耐熱セパレータ12aの製造は特に限定されるものではなく、公知の方法を利用して行うことができる。以下では、セパレータ12がその材料として主にポリエチレンを含む場合を仮定して説明する。しかし、セパレータ12が他の材料を含む場合でも、同様の製造工程により、耐熱セパレータ12aを製造できる。
以下、上記混練工程を詳細に説明する。
このように、加熱器24により加熱されながらスクリュ23により押し出される樹脂原料に、加熱器25により予め加熱された可塑剤が供給される。このため、フィード口27からスクリュ23に投入されて加熱されながらサイドフィード口28に到達した樹脂原料に室温状態の可塑剤がサイドフィードされる状況が回避される。
従って、サイドフィード口28付近の混練部と樹脂原料が急冷される事態が回避される。このため、サイドフィード口28付近の樹脂原料の粘度が局所的に高くなり、混練装置21の吐出性が不安定になるという問題が解決される。
さらに、樹脂原料が室温状態の可塑剤により急冷される事態が回避されるので、樹脂材料と可塑剤との好適な混練が阻害された状態から混練状態を良化するために、サイドフィード口よりも下流の樹脂混練部の寸法を長くしたり、樹脂混練部での原料の滞留時間を長くしたりする必要が消滅する。このため、原料と可塑剤の混練による生産性の低下が抑制できる。
この結果、原料の吐出性や生産性を低下させることなく、原料の好ましい特性を得ることができるという効果を奏する。後述する実施形態も同様の効果を奏する。
図5は実施形態2に係る混練装置21Aの要部を模式的に示す図である。図4で前述した構成要素と同一の構成要素は同一の参照符号を付し、それらの詳細な説明は繰り返さない。
前述した実施形態では、可塑剤が常温で液体状である例を示したが、本発明はこれに限定されない。可塑剤は常温で固体状であっても良い。常温で固体状の可塑剤の例としては、パラフィンワックスやステアリルアルコール等の飽和高級アルコール等が挙げられる。なお、常温で固体状の可塑剤をサイドフィード口28より供給する場合は、固体状可塑剤を融点以上に加熱する機構を加熱器25以前に設けて流動するようにしてもよく、液添ポンプ30を用いずに粉体状のまま加熱器25に供給してもよい。
前述した実施形態では、可塑剤は、全量がサイドフィード口28から供給される例を示したが、本発明はこれに限定されない。可塑剤は、その一部を予めポリオレフィンと混合し、その混合物をフィード口27から供給してもよい。
以上のように本実施形態によれば、混練装置21は、フィード口27から供給された樹脂原料(ポリエチレン)を押し出すスクリュ23と、前記スクリュ23により押し出される樹脂原料(ポリエチレン)を加熱する第1加熱器(加熱器24)と、前記第1加熱器(加熱器24)により加熱されながら前記スクリュ23により押し出される樹脂原料(ポリエチレン)に、前記フィード口27よりも下流側に配置されたサイドフィード口28から供給される可塑剤(流動パラフィン)を予め加熱する第2加熱器(加熱器25)とを備える。
22 シリンダ
23 スクリュ
24 加熱器(第1加熱器)
25 加熱器(第2加熱器)
27 フィード口
28 サイドフィード口
37 樹脂滞留部
Claims (5)
- フィード口から供給された樹脂原料を押し出すスクリュと、
前記スクリュにより押し出される樹脂原料を加熱する第1加熱器と、
前記第1加熱器により加熱されながら前記スクリュにより押し出される樹脂原料に、前記フィード口よりも下流側に配置されたサイドフィード口から供給される可塑剤を予め加熱する第2加熱器とを備えた混練装置。 - 前記スクリュが、前記樹脂原料を押し戻すために設けられた樹脂滞留部を有し、
前記樹脂滞留部に対応する位置に前記サイドフィード口が配置される請求項1に記載の混練装置。 - 前記スクリュが収容されるシリンダの下流端よりも上流端に近い位置に前記サイドフィード口が配置される請求項2に記載の混練装置。
- フィード口から供給された樹脂原料をスクリュにより押し出す押し出し工程と、
前記スクリュにより押し出される樹脂原料を加熱する加熱工程と、
前記加熱工程により加熱されながら前記スクリュにより押し出される樹脂原料に、前記フィード口よりも下流側に配置されたサイドフィード口から、加熱された可塑剤を供給する供給工程とを包含する混練物の製造方法。 - 前記可塑剤のうちの0重量%よりも多く50重量%以下の可塑剤が前記フィード口から前記樹脂原料と共に供給される請求項4に記載の混練物の製造方法。
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| JP6759152B2 (ja) * | 2017-05-24 | 2020-09-23 | キヤノン株式会社 | 画像処理装置、方法、プログラム及びシステム |
| DE102019104206A1 (de) * | 2019-02-19 | 2020-08-20 | Monbat New Power GmbH | Verfahren und Vorrichtung zur Herstellung einer Elektrode für einen Akkumulator |
| CN112706311B (zh) * | 2019-10-24 | 2025-12-12 | 天津莱尔德电子材料有限公司 | 包括使热管理和/或emi减轻材料进行联机再混合的分配系统和方法 |
Citations (3)
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| JPS6369606A (ja) * | 1986-09-12 | 1988-03-29 | Mitsui Toatsu Chem Inc | 溶融樹脂への添加剤注入装置 |
| JPH10310647A (ja) * | 1997-05-13 | 1998-11-24 | Asahi Chem Ind Co Ltd | オレフィン系熱可塑性エラストマー用押出機及びそれを用いた製造方法 |
| JP2016023308A (ja) * | 2014-07-22 | 2016-02-08 | 有限会社ケー・イー・イー | 耐熱性ポリオレフィン微多孔膜及びその製造法。 |
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| US2266256A (en) * | 1941-03-31 | 1941-12-16 | Mcgraw Electric Co | Water heating system |
| US5266256A (en) * | 1993-02-16 | 1993-11-30 | Rohm And Haas Company | Extruder and process modifying residence time distribution |
| JP3328047B2 (ja) * | 1994-02-23 | 2002-09-24 | ミサワホーム株式会社 | 木質様成形品および木質様成形品の製造方法 |
| JP3917721B2 (ja) | 1997-08-08 | 2007-05-23 | 旭化成ケミカルズ株式会社 | 微多孔膜の製造方法 |
| JP2002254492A (ja) | 2001-03-06 | 2002-09-11 | Toshiba Mach Co Ltd | 2軸押出機によるpva押出方法および2軸押出機 |
| EP1405874B1 (en) * | 2002-10-03 | 2014-03-26 | Mitsubishi Gas Chemical Company, Inc. | Process for production of polyamide composite material |
| US20090127733A1 (en) * | 2005-10-21 | 2009-05-21 | Tonen Chemical Corporation | Method for producing microporous thermoplastic resin membrane |
| US20070112099A1 (en) * | 2005-11-15 | 2007-05-17 | Wade Bruce E | Methods and devices for continuous production of polymeric dispersions |
| CN101528819A (zh) * | 2006-10-23 | 2009-09-09 | 电气化学工业株式会社 | 聚乙烯醇缩醛片及其制造方法 |
| KR100917554B1 (ko) * | 2007-11-01 | 2009-09-16 | 이정 | 압출기용 약품 주입방법 및 장치 |
| KR101000749B1 (ko) * | 2008-09-30 | 2010-12-13 | 주식회사 그린케미칼 | 생분해성 수지 조성물, 그의 제조방법 및 그로부터 제조되는 생분해성 필름 |
| WO2015121386A1 (de) * | 2014-02-13 | 2015-08-20 | Sika Technology Ag | Verfahren zur herstellung gebrauchsfertiger weich-pvc-folien oder profile |
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- 2018-02-28 US US15/907,994 patent/US20180250866A1/en not_active Abandoned
- 2018-03-01 CN CN201810173043.8A patent/CN108527814A/zh active Pending
- 2018-03-02 KR KR1020180025131A patent/KR101970913B1/ko active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6369606A (ja) * | 1986-09-12 | 1988-03-29 | Mitsui Toatsu Chem Inc | 溶融樹脂への添加剤注入装置 |
| JPH10310647A (ja) * | 1997-05-13 | 1998-11-24 | Asahi Chem Ind Co Ltd | オレフィン系熱可塑性エラストマー用押出機及びそれを用いた製造方法 |
| JP2016023308A (ja) * | 2014-07-22 | 2016-02-08 | 有限会社ケー・イー・イー | 耐熱性ポリオレフィン微多孔膜及びその製造法。 |
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| Publication number | Publication date |
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| CN108527814A (zh) | 2018-09-14 |
| US20180250866A1 (en) | 2018-09-06 |
| KR20180101245A (ko) | 2018-09-12 |
| KR101970913B1 (ko) | 2019-04-19 |
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