JP6571586B2 - モールドの作製方法、パターンシートの製造方法、電鋳金型の作製方法、及び電鋳金型を用いたモールドの作製方法 - Google Patents
モールドの作製方法、パターンシートの製造方法、電鋳金型の作製方法、及び電鋳金型を用いたモールドの作製方法 Download PDFInfo
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Description
(原版の第1の実施の形態)
図1は本発明の原版の第1の実施の形態を示す斜視図である。
図3A及び図3Bは本発明の原版10の第2の実施の形態を示す斜視図である。
原版10の傾斜部10Cの最大厚みDは、次のように設定する。
上述の原版10を用いた本発明のモールドの作製方法の実施形態について、図2Aの直線型の傾斜部10Cを有する原版10の例で説明する。
次に、一つの突起状パターン10Aを有する原版10を、大型の熱可塑性樹脂シート20の表面20Bの複数個所に押圧して複数の凹状パターン20Aを有する大型のモールド22を作製する工程を説明する。
次に、上記の如く作製した大型のモールド22を用いて、微細なパターンを有する成形品である突起状パターンを有するパターンシートの製造方法について説明する。図18A〜図18Gは、大型のモールド22を用いたパターンシートの製造方法の手順を示す工程図である。
次に、モールド22を用いて電鋳金型を作製する方法について説明する。図20A〜図20Cはモールド22を用いた電鋳金型の作製方法の手順を示す工程図である。
次に、電鋳金型410を用いて上記の如く作製したモールド26を用いて突起状パターンを有するパターンシートの製造方法について説明する。図22A〜図22Gは、モールド26を用いたパターンシート220の製造方法の手順を示す工程図である。なお、図18A〜図18Gのパターンシートの製造方法の手順を示す工程図と、図22A〜図22Gは、パターンシートの製造方法の手順を示す工程図とでは、モールド22とモールド26との違いを除いて、基本的に同じである。したがって、図18A〜図18Gに示した工程図と同様の構成には同一符号を付して説明を省略する場合がある。
10A…突起状パターン
10B…平面
10C…傾斜部
10D…平坦部
11…台
12…突起部
12A…針部
12B…錐台部
12C…柱状部
20…熱可塑性樹脂シート
20A…凹状パターン
20B…表面
22…モールド
23…複製型(又は成形品)
26…モールド
26A…凹状パターン
30…押圧装置
32…Z軸駆動機構
34…連結部
36…保持部
38…テーブル
40…X軸駆動機構
42…Y軸駆動機構
44…架台
46…制御システム
48…レーザー変位計
200…ポリマー溶解液
210…ポリマーシート
220…パターンシート
220A…突起状パターン
300…基材
400…金属体
410…電鋳金型
410A…突起状パターン
P…盛り上がり部
Claims (11)
- 台の上の中央部に形成された突起状パターンの外周部に囲い状に形成されて内側から外側に向けて厚みが徐々に増加する傾斜部を有する原版、及び熱可塑性樹脂シートを準備する準備工程と、
加熱された前記原版を、前記原版の傾斜部と前記熱可塑性樹脂シートの表面とが密接する位置で、前記熱可塑性樹脂シートに押圧し、前記原版を押圧した状態で前記原版を冷却し、前記原版と前記熱可塑性樹脂シートと引き離して、前記熱可塑性樹脂シートに前記突起状パターンの反転形状の凹状パターンを形成する形成工程と、を備えたモールドの作製方法であって、
前記傾斜部の最大厚みは、前記傾斜部の最大厚みの部分と前記熱可塑性樹脂シートの表面とが密接するまで押し込んだ際の前記突起状パターンを前記熱可塑性樹脂シートに押し込んだ部分の合計体積と、前記原版の平面、前記熱可塑性樹脂シートの表面、及び前記傾斜部で囲まれた空間の合計体積以下とが等しくなる厚みであるモールドの作製方法。 - 前記原版と前記熱可塑性樹脂シートとを相対的に移動し、前記原版を前記熱可塑性樹脂シートに押圧する位置を決める位置決め工程と、前記形成工程とを繰り返し行う請求項1に記載のモールドの作製方法。
- 前記傾斜部は縦断面形状が直角三角形に形成され、内側から外側に向けて厚みが直線的に増加する請求項1又は2に記載のモールドの作製方法。
- 前記傾斜部は縦断面形状が弓形に形成され、内側から外側に向けて厚みが円弧状に増加した後、増加が徐々に小さくなる請求項1又は2に記載のモールドの作製方法。
- 前記原版は前記傾斜部の傾斜終端に連続して平坦部を有する請求項1又は2に記載のモールドの作製方法。
- 前記原版を前記熱可塑性樹脂シートに押圧する際、前記熱可塑性樹脂シートの表面の位置を検出し、前記熱可塑性樹脂シートの表面の位置から一定量を押し込む請求項1から5の何れか一項に記載のモールドの作製方法。
- 前記原版を前記熱可塑性樹脂シートに押圧する際、前記原版にかかる圧力を測定し、設定されたある圧力値と比較し、前記原版の押し込み量を決定する請求項1から5の何れか一項に記載のモールドの作製方法。
- 請求項1から7の何れか一項に記載の作製方法によりモールドを作製する工程と、
前記モールドの凹状パターンにポリマー溶解液を供給する供給工程と、
前記ポリマー溶解液を乾燥させてポリマーシートとする乾燥工程と、
前記ポリマーシートを前記モールドから剥離するポリマーシート剥離工程と、
を含む突起状パターンを有するパターンシートの製造方法。 - 請求項1から7の何れか一項に記載の作製方法によりモールドを作製する工程と、
前記モールドの凹状パターンに、電鋳法により金属体を形成する電鋳工程と、
前記金属体を前記モールドから剥離する剥離工程と、
を含む突起状パターンを有する電鋳金型の作製方法。 - 請求項9に記載の作製方法により電鋳金型を作製する工程と、
突起状パターンを有する前記電鋳金型を用いて、前記電鋳金型の突起状パターンの反転形状である凹状パターンを有する樹脂製のモールドを作製する工程と、
を含む電鋳金型を用いたモールドの作製方法。 - 請求項10に記載の作製方法によりモールドを作製する工程と、
前記モールドの凹状パターンにポリマー溶解液を供給する供給工程と、
前記ポリマー溶解液を乾燥させてポリマーシートとする乾燥工程と、
前記ポリマーシートを前記モールドから剥離する剥離工程と、
を含む突起状パターンを有するパターンシートの製造方法。
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