JP7001905B2 - 面に対して処理を施すための方法およびシステム - Google Patents
面に対して処理を施すための方法およびシステム Download PDFInfo
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- JP7001905B2 JP7001905B2 JP2019532174A JP2019532174A JP7001905B2 JP 7001905 B2 JP7001905 B2 JP 7001905B2 JP 2019532174 A JP2019532174 A JP 2019532174A JP 2019532174 A JP2019532174 A JP 2019532174A JP 7001905 B2 JP7001905 B2 JP 7001905B2
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- open body
- fluid
- inner structure
- tank
- treatment
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Images
Classifications
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- B05C3/09—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles
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- Application Of Or Painting With Fluid Materials (AREA)
Description
1 チャンバを開き、フィルタスクリーン164を挿入し、チャンバを閉じる。
2 チャンバを100~400℃の範囲、好ましくは150~200℃の範囲まで加熱する。たとえば、チャンバを約200℃まで加熱してもよい。
3 チャンバを所望の圧力、たとえば約0.03mbarにまでポンプで減圧する。
4 運転圧力、たとえば約0.67mbarに到達するまでアルゴンと酸素とを投入する。
5 プラズマ(イオン化された気体分子)を形成するためにRF発生器のスイッチを入れてRFを印加する。
6 プラズマを用いてスクリーンフィルタの壁を洗浄、機能化する。
7 アルゴンとシラン(SiH4)とアンモニア(NH3)との混合物を投入して窒化ケイ素SiNxを200nmの厚さに積層する。
8 アルゴンと他の適切な気体との混合物に切り換えてSiOxCを30nmの厚さに積層する。
9 SiNx/SiOxCの積層を要求された通りの回数だけ繰り返す。
10 プラズマ発生器のスイッチを切り、加熱をやめ、気体をポンプで排出し、チャンバを開き、コーティング済みのフィルタスクリーン164を取り出す。
ステップ1
図1に示されているように、フィルタスクリーンは2つの同心円状に配置された円筒体により画定される環状空間内に同心円状に配置され、物品の壁とその両側にある同心円状に配置された円筒体の壁との間の距離は約5mm以下である。
ステップ2
真空状態にされ、清浄液が投入される。これは石けん水であってもよい。フィルタスクリーンの壁または孔、割れ目および外囲面に付着した微細な汚れを剥がすのを助けるために超音波が用いられる。超音波洗浄力を高める加熱(100℃未満、好ましくは80℃以下)を用いる場合もある。この洗浄ステップの期間は10分以下であってもよい。その後、清浄液が圧力により排出される。受け入れ可能な洗浄レベルが達成されるまでこのステップを繰り返すことができる。次いで、清浄液の溶剤(たとえば石けんを含まない水)を環状空間の中に投入して排出することにより物品をすすぐ。後者においては超音波処理をさらに用いることができる。フィルタスクリーンが新しくて洗浄を必要としない場合にはステップ2をスキップすることもできる。
ステップ3
機能化するための流体をフィルタスクリーンのまわりの処理流体容積部の中に投入する。このステップは、物品(316鋼)の面に形成される所望のコーティングに親水基(たとえば、水酸基)や強い共有結合を形成する他の官能基を付与するために用いられる。これらの官能基はコーティングの強い接着性にとって重要である。また、面を親水性にすることは極性溶媒を含むコーティング溶液を用いる場合に重要なことである。極性溶媒を含むコーティング溶液を用いることはよくあることである。機能化するための流体を投入する前に、ステップ2の場合と同様に環状空間を真空にすることもできる。機能化するための溶液を適所に配置すると、加熱とともにまたは加熱することなく超音波が照射される。好ましくは、この溶液は中濃度の水酸化ナトリウム(たとえば2M溶液)である。機能化するための媒体はプラズマであってもよい。この場合、超音波処理および加熱の必要性がなくなる。水酸化ナトリウムまたは他の溶液を用いた機能化行程の最後には、物品を当該溶液の溶剤ですすぎ、真空状態で乾燥する。
ステップ4
極性溶媒を用いたコーティング溶液を環状空間の中に投入してフィルタスクリーンの内面および外面の処理流体容積部を満たす。物品の面が親水性になっているので、この段階で減圧を必要としない場合もある。コーティング溶液に応じて、コーティング行程(フィルムの積層)の向上のために超音波処理および/または加熱処理を用いるようにすることができる。その後、コーティング溶液を圧力により排出して過剰の液体を取り除くことにより、所望の膜厚レベルのコンフォーマル(絶縁保護、防湿)コーティングを実現することが可能となる。
ステップ5
30分後、コーティング済みの物品を同心円状に配置されたチャンバから取り出し、硬化処理のために200℃のオーブンに(1時間)配置して、強固接着疎水性コーティング(strongly sdhering hydrophobic coating)を提供する。親水性の緻密な耐環境性無機コーティングを形成するためには、この後、物品をより高温度、たとえば最大800℃以下で(たとえば2時間)アニール処理することが望ましい場合もある。同心円状に配置されたものを加熱することにより硬化ステップを達成することもできる。この場合、物品は硬化処理後にのみ取り出される。このことは、硬化処理が完了する前にコーティングされた物品を空気または通常大気に暴露させることが望ましくない場合にとくに重要である。
Claims (15)
- 所定の内部容積を有する開放本体の面に処理を施す方法であって、
前記開放本体の内部形状に合うとともに、前記開放本体の内部容積の大部分または前記開放本体の内部幅の大部分を占めるような形状を有する内側構造体(110)を提供することと、
前記開放本体内に前記内側構造体(110)を配置して前記開放本体の内部の内面に面する内側空間(150)を含む処理流体内側容積部を形成することと、
前記処理流体内側容積部の中に処理流体を投入して該処理流体を用いた処理を施すことにより前記開放本体の内面を修正することと、
を含み、
前記処理流体を用いた処理が、プラズマを塗布することを含み、前記プラズマが、前記開放本体を電極として用いて生成される、方法。 - 前記内側構造体(110)が膨張式であり、
前記内側構造体(110)を配置するステップが前記内側構造体(110)を膨張させることを含む、請求項1に記載の方法。 - 前記内側構造体(110)が剛体である、請求項1に記載の方法。
- 前記開放本体に合うとともに前記開放本体を収容するような形状を有するタンク(120)を提供することと、
前記タンク(120)内に前記開放本体を配置して前記開放本体の外面に面する外側空間を含む処理流体外側容積部を形成することと、
前記処理流体外側容積部の中に前記処理流体を投入して該処理流体を用いた処理を施すことにより前記開放本体の外面を修正することと、
を含む、請求項1乃至3のいずれか一項に記載の方法。 - 前記処理流体外側容積部が、前記タンク(120)の内部幅の20%未満に及ぶように前記タンクが配置され、前記外側空間がそれに応じたサイズを有する、請求項4に記載の方法。
- 前記処理を施すことが、前記開放本体の面をコーティングする、洗浄する、または機能化することを含む、請求項1乃至5のうちのいずれか一項に記載の方法。
- 前記プラズマが、前記内側構造体(110)および前記タンク(120)のうちのいずれかを他の電極として用いて生成される、請求項4又は5に記載の方法。
- 前記処理流体が存在している間または前記処理流体が除去された後、前記開放本体の面に塗布された前記処理流体に紫外線(UV)を照射することを含む、請求項1乃至7のうちのいずれか一項に記載の方法。
- 前記内側構造体(110)が、前記開放本体の内面に流体を塗布するためのノズルを含む、請求項1乃至8のうちのいずれか一項に記載の方法。
- 前記開放本体の洗浄、機能化またはコーティングを助けるために電気化学作用および/またはプラズマを用いることを含む、請求項1乃至9のうちのいずれか一項に記載の方法。
- 前記処理流体内側容積部が、前記開放本体の内部幅の20%未満に及ぶように前記内側構造体(110)が配置され、前記内側空間がそれに応じたサイズを有する、請求項1乃至10のうちのいずれか一項に記載の方法。
- 開放本体の面に処理流体を塗布するためのシステムであって、
前記開放本体の内部形状に合うとともに、前記開放本体の容積の大部分または前記開放本体の幅の大部分を占めるような形状を有する内側構造体(110)を備え、
前記開放本体および前記内側構造体(110)が一緒になって、処理流体を投入して該処理流体と前記開放本体の内面とを接触させるための、前記開放本体の内面に面する内側空間を含む処理流体内側容積部を画定するように構成され、
前記処理流体としてプラズマを塗布するように構成され、前記プラズマが、前記開放本体を電極として用いて生成されるように構成されている、システム。 - 前記開放本体に合うとともに前記開放本体を収容するような形状を有するタンク(120)を備え、
前記タンク(120)および前記開放本体が一緒になって、処理流体を投入するための、前記開放本体の外面に面する外側空間を含む処理流体外側容積部を画定するように構成されてなる、請求項12に記載のシステム。 - 前記内側構造体(110)および前記タンク(120)がその間に環状空間を画定し、前記内側構造体(110)が前記開放本体の直径の大部分を占めるように構成されてなる、請求項13に記載のシステム。
- 電極として働かせるように前記内側構造体、前記開放本体および前記タンクを接続するための電気回路を備えてなる、請求項13又は14に記載のシステム。
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