JP6760175B2 - 加飾パネル - Google Patents
加飾パネル Download PDFInfo
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- JP6760175B2 JP6760175B2 JP2017065513A JP2017065513A JP6760175B2 JP 6760175 B2 JP6760175 B2 JP 6760175B2 JP 2017065513 A JP2017065513 A JP 2017065513A JP 2017065513 A JP2017065513 A JP 2017065513A JP 6760175 B2 JP6760175 B2 JP 6760175B2
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Description
試験例1の加飾パネル1は、図1に示すように、3層の透明層3b、3a、3cからなる積層体3を有する。試験例1の加飾パネル1は、次のようにして形成された。まず、ポリカーボネート(PC)とアクリル樹脂(PMMA)の2層の透明層からなる樹脂フィルム体を、押出成型法により形成した。その後、この樹脂フィルム体のPC表面上に、クリアコート層となる紫外線硬化型(UV硬化型)の透明インクと、黒色インクと、接着剤と、をこの順でスクリーン印刷法により塗工し積層させ、フィルム体を形成した。次に、このフィルム体を所定の形状に賦形し、賦形されたフィルム体を、PMMAが型面側になるように成形型内に配置した。そして、この成形型内に基材の樹脂材料であるPCを充填し、すなわちインサート成形法によって基材とフィルム体とを一体的に成形した。こうして、試験例1の加飾パネル1が形成された。
図1に示すように、形成された試験例1の加飾パネル1では、外側から積層体3、黒色層21、接着剤層(図示略)が、この順で基材2の上に積層されている。そして、積層体3では、外側から基材2側に向かって、樹脂フィルム層である透明層3b(PMMA)、透明層3a(PC)、クリアコート層である透明層3c(UV硬化型)が、この順で積層されている。
試験例1における積層体3の各層の厚さは、透明層3b(PMMA)が60μmであり、透明層3a(PC)が240μmであり、透明層3c(UV硬化型)が8μmであった。また、積層体3の各層の屈折率は、透明層3b(PMMA)が1.49であり、透明層3a(PC)が1.58であり、透明層3c(UV硬化型)が1.66であった。試験例1の加飾パネル1では、各透明層3b、3a、3cの屈折率は、最も外側から基材側に向けて順に大きくなっていた。
試験例2の加飾パネル1は、図2に示すように、3層の透明層からなる積層体3を有する。試験例2の加飾パネル1は、試験例1の加飾パネル1におけるクリアコート層の材料を、UV硬化型の透明インクから蒸発乾燥型の透明インクに変更した点で異なり、その他の構成及び成形方法は試験例1と同様である。すなわち、試験例2の加飾パネル1における積層体3では、外側から基材2側に向かって、樹脂フィルム層である透明層3b(PMMA)、透明層3a(PC)、クリアコート層である透明層3d(蒸発乾燥型)が、この順で積層されている。
試験例2における積層体3の各層の厚さは、透明層3b(PMMA)が60μmであり、透明層3a(PC)が240μmであり、透明層3d(蒸発乾燥型)が6μmであった。また、積層体3の各層の屈折率は、透明層3b(PMMA)が1.49であり、透明層3a(PC)が1.58であり、透明層3d(蒸発乾燥型)が1.68であった。試験例2の加飾パネル1では、各透明層3b、3a、3dの屈折率は、最も外側から基材側に向けて順に大きくなっていた。
試験例3の加飾パネル10は、図3に示すように、3層の透明層からなる積層体30を有する。試験例3の加飾パネル10は、試験例1における積層体3のうち、樹脂フィルム層の透明層3b、3aの配置(PMMAとPCとの配置)が逆である点で異なり、その他の構成及び成形方法については試験例1と同様である。すなわち、試験例3における積層体30は、基材2側のクリアコート層である透明層3c(UV硬化型)の上に透明層3b(PMMA)が配置され、積層体30の最も外側に透明層3a(PC)が配置されている。
試験例3における積層体30では、各層の屈折率は、最も外側から基材側に向けて順に大きくなるような構成を採っていない。
試験例4の加飾パネル10は、図4に示すように、3層の透明層からなる積層体30を有する。試験例4の加飾パネル10は、試験例2における積層体3のうち、樹脂フィルム層の透明層3b、3aの配置(PMMAとPCとの配置)が逆である点で異なり、その他の構成及び成形方法については試験例2と同様である。すなわち、試験例4における積層体30は、基材2側のクリアコート層である透明層3d(蒸発乾燥型)の上に透明層3b(PMMA)が配置され、積層体30の最も外側に透明層3a(PC)が配置されている。
試験例4における積層体30では、各層の屈折率は、最も外側から基材側に向けて順に大きくなるような構成を採っていない。
試験例5の加飾パネルは、試験例1の加飾パネル1の積層体3において、クリアコート層である透明層3c(UV硬化型)の厚さを20μmとした点で異なり、その他の構成及び成形方法については試験例1と同じである。
試験例6の加飾パネルは、試験例2の加飾パネル1の積層体3において、クリアコート層である透明層3d(蒸発乾燥型)の厚さを3μmとした点で異なり、その他の構成及び成形方法については試験例2と同じである。
試験例7の加飾パネルは、試験例3の加飾パネル10において、クリアコート層である透明層3c(UV硬化型)の厚さを20μmとした点で異なり、その他の構成及び成形方法については試験例3と同じである。
試験例8の加飾パネルは、試験例4の加飾パネル10において、クリアコート層である透明層3d(蒸発乾燥型)の厚さを3μmとした点で異なり、その他の構成及び成形方法については試験例4と同じである。
<1> 基材2と、基材2上に設けられた黒色層21と、黒色層21上に設けられ、屈折率の異なる複数の透明層(3a、3b、3c、3d)が積層してなる積層体3と、を備え、積層体3における各透明層(3a、3b、3c、3d)の屈折率は、基材2に向かって順に大きくなる加飾パネル1。
<2> 透明層(3a、3b、3c、3d)の屈折率は、1.2以上1.7以下の範囲内である<1>に記載の加飾パネル1。
<3> 隣り合う透明層(3a、3b、3c、3d)同士の屈折率の差が、0.01以上0.5以下の範囲内である<1>又は<2>に記載の加飾パネル1。
<4> 積層体3は、透明インクを塗工してなるクリアコート層(3c、3d)を含む<1>〜<3>の何れか一つに記載の加飾パネル1。
<5> 積層体3は、透明層としてフィルム層(3a、3b)とクリアコート層(3c、3d)とを含み、クリアコート層(3c、3d)は、黒色層21とフィルム層(3a、3b)とを接着する<1>〜<3>の何れか1つに記載の加飾パネル1。
<6> クリアコート層(3c、3d)は、UV硬化型及び/又は蒸発乾燥型である<4>又は<5>に記載の加飾パネル1。
3c、3d:クリアコート層(透明層)
Claims (4)
- 基材と、
前記基材上に設けられた黒色層と、
前記黒色層上に設けられ、屈折率の異なる複数の透明層が積層してなる積層体と、を備え、
前記積層体における各前記透明層の屈折率は、前記基材に向かって順に大きくなり、
前記積層体は、前記透明層としてフィルム層とクリアコート層とを含み、
前記クリアコート層は、前記黒色層と前記フィルム層とを接着する加飾パネル。 - 前記透明層の屈折率は、1.2以上1.7以下の範囲内である請求項1に記載の加飾パネル。
- 隣り合う前記透明層同士の屈折率の差が、0.01以上0.5以下の範囲内である請求項1又は2に記載の加飾パネル。
- 前記クリアコート層は、UV硬化型及び/又は蒸発乾燥型である請求項1〜3の何れか一項に記載の加飾パネル。
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