JP7486445B2 - 塗工体の製造方法および塗工体の製造装置 - Google Patents
塗工体の製造方法および塗工体の製造装置 Download PDFInfo
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- JP7486445B2 JP7486445B2 JP2021012812A JP2021012812A JP7486445B2 JP 7486445 B2 JP7486445 B2 JP 7486445B2 JP 2021012812 A JP2021012812 A JP 2021012812A JP 2021012812 A JP2021012812 A JP 2021012812A JP 7486445 B2 JP7486445 B2 JP 7486445B2
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Description
図1は、本実施の形態の塗工体の製造工程を示す断面図である。また、図2は、本実施の形態の塗工体の製造装置の構成を模式的に示す図である。
本実施の形態においては、実施の形態1の塗工体の製造装置の応用例について説明する。
図8~図10は、本応用例のスプレー塗工装置を示す断面図である。Zは、随伴流を示し、図9は上流側、図10は下流側を示す。実施の形態1(図5)においては、噴霧エリアASの上流側および下流側のエアカーテンエリアA1のエアーの吹き付け方向を対称とした(角度θを同じとした)が、図8~図10に示すように、下流側のエアーの吹き付け角度θbを上流側のエアーの吹き付け角度θaより大きくしてもよい(θb>θa)。
随伴流の影響を受けやすい下流側のエアカーテンエリアA1においてエアーノズルの風量を多くしてもよい。風量は、送風機などを使用した場合の単位時間あたりに移動させる空気量(m3/min)として定義される。例えば、下流側のエアカーテンエリアA1のエアーノズルの風量を、上流側のエアカーテンエリアA1のエアーノズルの風量より多くしてもよい。
随伴流の影響を受けやすい下流側のエアカーテンエリアA1においてエアーノズルの本数を多くしてもよい。例えば、下流側のエアカーテンエリアA1において、図4の紙面奥行き方向にエアーノズルを複数配置してもよく、その本数は、上流側のエアカーテンエリアA1のエアーノズルの本数より多くしてもよい。この場合、エアーノズル1本あたりの風量が同じであれば、下流側のエアカーテンエリアA1のエアーノズルの風量を、上流側のエアカーテンエリアA1のエアーノズルの風量より多くすることとなる。
本実施の形態においては、実施の形態1で説明した塗工体の適用例について説明する。実施の形態1で説明した塗工体の製造装置を用いて形成した塗工体は、セパレータとして、例えば、リチウムイオン電池に適用することができる。
図14は、実施の形態4のセルロース(セオラス)の沈殿状態を示す図である。セルロース単体(未処理セルロース)およびセルロース表面の疎水基を化学変性(半エステル(SA)化)したものを、それぞれ水中に同量添加し、24時間経過させた(図14)。添加量は10gである。SA化とは、セルロースを添加剤(無水コハク酸)によりエステル化した後、未反応の添加剤を除去することを意味する。
図15および図16は、実施の形態5のセルロースの沈殿状態を示す図である。セルロース表面に疎水基を化学変性(半エステル(SA)化)したもの、またはSA化セルロースの疎水基に酸化プロピレンで二次的に化学変性(SAPO化)したものを、それぞれ水中に同量添加した。添加直後の様子を図15に示す。また、24時間経過後の様子を図16に示す。図16に示すように、SA化またはSAPO化セルロースを添加してから24時間経過した際の沈降状態を比較すると、SAPO化した方が、SA化より沈降が抑制されていることが確認された。これは、セルロース分子表面に修飾した疎水基が増加したことで、SA化よりもさらに静電反発作用が高まったためと考えられる。したがって、実施の形態4で説明したSA化のみならず、SAPO化したセルロースを噴霧エリアASで噴霧する液中に添加することにより、液体表面での静電反発作用が非常に高まるため、テイラーコーンの先端から微細な液滴を噴出することができる。
3a 第1塗工液層
3b 塗工膜
4a 第2塗工液層
4b 塗工膜
5 塗工体
10 ヒーター
20 第1塗工処理部
20a 塗工液
20A グラビア塗工部
20b チャンバー(槽)
20B グラビア塗工部
20c ブレード
30 第2塗工処理部
40 乾燥処理部
90 回転盤
101 正極材
103 負極材
106 缶
Claims (15)
- (a)搬出部から取り出された基材の第1面に第1塗工液を塗布し、第1塗工液層を形成する工程と、
(b)前記(a)工程の後、前記第1塗工液層上に第2塗工液を塗布し、第2塗工液層を形成する工程と、
(c)前記(b)工程の後、前記第1塗工液層および第2塗工液層を乾燥することにより第1塗工層および第2塗工層を形成する工程と、
(d)前記第1塗工層および前記第2塗工層が形成された前記基材を搬入部において取り込む工程と、
を有し、
前記(a)工程は、前記第1塗工液を前記基材の第1面に塗布し、
前記(b)工程は、前記第2塗工液を前記基材の第1面に噴霧し、
前記(b)工程において、前記第2塗工液を噴霧するノズルが配置された第1室の前記搬入部側の第2室においてエアーノズルにより前記第1室の基材出口に空気を吹き付ける、塗工体の製造方法。 - (a)搬出部から取り出された基材の第1面に第1塗工液を塗布し、第1塗工液層を形成する工程と、
(b)前記(a)工程の後、前記第1塗工液層上に第2塗工液を塗布し、第2塗工液層を形成する工程と、
(c)前記(b)工程の後、前記第1塗工液層および第2塗工液層を乾燥することにより第1塗工層および第2塗工層を形成する工程と、
(d)前記第1塗工層および前記第2塗工層が形成された前記基材を搬入部において取り込む工程と、
を有し、
前記(a)工程は、前記第1塗工液を前記基材の第1面に塗布し、
前記(b)工程は、前記第2塗工液を前記基材の第1面に噴霧し、
前記(b)工程において、前記第2塗工液を噴霧するノズルが配置された第1室の前記搬出部側の第3室において他のエアーノズルにより前記第1室の基材入口に空気を吹き付ける、塗工体の製造方法。 - 請求項1または2の何れか1項に記載の塗工体の製造方法において、
前記ノズルと前記基材との間に、1kV以上の電圧が印加されている、塗工体の製造方法。 - 請求項1または2の何れか1項に記載の塗工体の製造方法において、
前記エアーノズルは、先端が前記ノズル側に近づくように傾斜しており、前記ノズルの配置方向と前記エアーノズルの傾斜方向との角度は、0.1°以上である、塗工体の製造方法。 - 請求項1または2の何れか1項に記載の塗工体の製造方法において、
前記第1塗工液は、第1フィラーと第2フィラーとを有し、
前記第1フィラーは、アルミナ、シリカ、水酸化アルミニウム、ベーマイトから選択される材料であり、
前記第2フィラーは、セルロース、カーボンナノファイバー、カーボンナノチューブ、セルロースナノファイバー、グラフェン、フラーレンから選択される材料である、塗工体の製造方法。 - 請求項5記載の塗工体の製造方法において、
前記第2フィラーは、その表面において化学変性処理が施されている、塗工体の製造方法。 - 請求項1または2の何れか1項に記載の塗工体の製造方法において、
前記第2塗工液は、アルカリ珪酸塩を有する、塗工体の製造方法。 - 請求項1または2の何れか1項に記載の塗工体の製造方法において、
前記第1塗工液は、電極活物質を有し、
前記第2塗工液は、アルカリ珪酸塩を有する、塗工体の製造方法。 - 基材を取り出す搬出部と、
前記基材の第1面に第1塗工液を塗布する第1塗工部と、
前記基材の第1面に第2塗工液を塗布する第2塗工部と、
前記基材上の第1塗工液および第2塗工液を乾燥することにより、前記基材の第1面に塗工体を形成する乾燥部と、
前記塗工体が形成された前記基材を取り込む搬入部と、
を有し、
前記第1塗工部は、前記第1塗工液を前記基材の第1面に塗布し、
前記第2塗工部は、前記第2塗工液を前記基材の第1面に噴霧し、
前記第2塗工部は、前記第2塗工液を噴霧するノズルが配置された第1室と、前記第1室の前記搬入部側の第2室であって、前記第1室の基材出口に空気を吹き付けるエアーノズルが配置された第2室と、を有する、塗工体の製造装置。 - 基材を取り出す搬出部と、
前記基材の第1面に第1塗工液を塗布する第1塗工部と、
前記基材の第1面に第2塗工液を塗布する第2塗工部と、
前記基材上の第1塗工液および第2塗工液を乾燥することにより、前記基材の第1面に塗工体を形成する乾燥部と、
前記塗工体が形成された前記基材を取り込む搬入部と、
を有し、
前記第1塗工部は、前記第1塗工液を前記基材の第1面に塗布し、
前記第2塗工部は、前記第2塗工液を前記基材の第1面に噴霧し、
前記第2塗工部は、前記第1室の前記搬出部側の第3室であって、前記第1室の基材入口に空気を吹き付ける他のエアーノズルが配置された第3室と、を有する、塗工体の製造装置。 - 請求項9または10の何れか1項に記載の塗工体の製造装置において、
前記ノズルと前記基材との間に、1kV以上の電圧が印加されている、塗工体の製造装置。 - 請求項9または10の何れか1項に記載の塗工体の製造装置において、
前記エアーノズルは、先端が前記ノズル側に近づくように傾斜しており、前記ノズルの配置方向と前記エアーノズルの傾斜方向との角度は、0.1°以上である、塗工体の製造装置。 - 請求項9または10の何れか1項に記載の塗工体の製造装置において、
前記第1塗工液は、第1フィラーと第2フィラーとを有し、
前記第1フィラーは、アルミナ、シリカ、水酸化アルミニウム、ベーマイトから選択される材料であり、
前記第2フィラーは、セルロース、カーボンナノファイバー、カーボンナノチューブ、セルロースナノファイバー、グラフェン、フラーレンから選択される材料である、塗工体の製造装置。 - 請求項13記載の塗工体の製造装置において、
前記第2フィラーは、その表面において化学変性処理が施されている、塗工体の製造装置。 - 請求項9または10の何れか1項に記載の塗工体の製造装置において、
前記第1塗工液は、電極活物質を有し、
前記第2塗工液は、アルカリ珪酸塩を有する、塗工体の製造装置。
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JP2004136286A (ja) | 2002-10-16 | 2004-05-13 | Daimler Chrysler Ag | 部品に塗布するための乾燥塗料フィルム |
JP2004329996A (ja) | 2003-04-30 | 2004-11-25 | Toppan Forms Co Ltd | 超薄膜形成方法 |
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