JP2016068557A - 積層シートおよび成形体、並びにそれらの製造方法 - Google Patents
積層シートおよび成形体、並びにそれらの製造方法 Download PDFInfo
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- JP2016068557A JP2016068557A JP2015165987A JP2015165987A JP2016068557A JP 2016068557 A JP2016068557 A JP 2016068557A JP 2015165987 A JP2015165987 A JP 2015165987A JP 2015165987 A JP2015165987 A JP 2015165987A JP 2016068557 A JP2016068557 A JP 2016068557A
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- layer
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14688—Coating articles provided with a decoration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14811—Multilayered articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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Abstract
Description
〔絵柄層インクの作製〕
(顔料母液の処方)
1)カーボンブラック顔料;15質量部
(商品名「NIPex 35」、エボニックデグサジャパン株式会社)
2)分散剤;7.5質量部
(商品名「SOLSPERSE32000」、日本ルーブリゾール株式会社)
3)反応性モノマー;77.5質量部
(商品名「SR9003」、プロポキシ化(2)ネオペンチルグリコールジアクリレート、サートマージャパン株式会社)
上記材料をミキサーにて混合することにより、顔料母液を作製した。
1)上記にて作製した顔料母液;13質量部
2)脂肪族ウレタンアクリレートオリゴマー;10質量部
(商品名「CN996」、アルケマ株式会社)
3)テトラヒドロフルフリルアクリレート;10質量部
(商品名「V#150」、大阪有機化学工業株式会社)
4)アクリルモルフォリン;60質量部
(商品名「ACMO」、興人株式会社)
5)2−(1,2−シクロヘキサンジカルボキシイミド)エチルアクリレート;5質量部(商品名「アロニックスM−140」、東亞合成株式会社)
6)2−ヒドロキシ−2−メチル−1−フェニル−プロパン−1−オン;5質量部
(商品名「ダロキュア1173」、BASF株式会社)
7)ビス(2,4,6−トリメチルベンゾイル)−フェニルフォスフィンオキサイド);5質量部
(商品名「イルガキュア819」、BASF株式会社)
上記材料をミキサーにて混合することにより、絵柄層インクを作製した。
ヘッド加熱温度:57℃
ノズル径:70μm
印加電圧:50V
パルス幅:15μs
駆動周波数:4.5kHz
解像度:720dpi
図柄:木目柄
ランプ種類:メタルハライドランプ
ランプの出力:120W/cm
照射時間:1秒
照射回数:20回
照射距離:5mm
絵柄層の軟化温度が33℃であること以外は実施例1と同様にして積層シートおよび成形体を得た。得られた成形体は表面が平滑でなく凹凸が残るものであった(図8参照)。凹凸が残っている影響で絵柄層と着色層との複合的な作用で発生する奥行き感が無く意匠性が優れているとは言えないものであった。なお、このとき絵柄層を付与するために使用したインクの作製方法を以下に示す。
(絵柄層インクの処方)
1)実施例1と同じ顔料母液;13質量部
2)脂肪族ウレタンアクリレートオリゴマー;10質量部
(商品名「CN996」、アルケマ株式会社)
3)テトラヒドロフルフリルアクリレート;50質量部
(商品名「V#150」、大阪有機化学工業株式会社)
4)アクリルモルフォリン;20質量部
(商品名「ACMO」、興人株式会社)
5)2−(1,2−シクロヘキサンジカルボキシイミド)エチルアクリレート;5質量部(商品名「アロニックスM−140」、東亞合成株式会社)
6)2−ヒドロキシ−2−メチル−1−フェニル−プロパン−1−オン;5質量部
(商品名「ダロキュア1173」、BASF株式会社)
7)ビス(2,4,6−トリメチルベンゾイル)−フェニルフォスフィンオキサイド;5質量部
(商品名「イルガキュア819」、BASF株式会社)
上記材料をミキサーにて混合することにより、絵柄層インクを作製した。
樹脂層としてポリカーボネート系樹脂からなる透明フィルム(厚さ200μm、光透過率88%(400〜700nm)、軟化温度150℃)を用いたこと以外は実施例1と同様にして積層シートおよび成形体を得た。得られた成形体は表面が平滑でなく凹凸が残るものであった(図9参照)。凹凸が残っている影響で絵柄層と着色層との複合的な作用で発生する奥行き感が無く意匠性が優れているとは言えないものであった。
Claims (8)
- 光透過性を有し、軟化温度が120℃以下である樹脂層と、
前記樹脂層の一方の面に積層され、軟化温度が120℃以下である着色層と、
前記着色層に積層され、軟化温度が120℃以下であるバッキング層と、
前記樹脂層の他方の面に積層され、電離放射線硬化型樹脂からなる光透過性を有する絵柄層と、を含み、前記絵柄層の軟化温度が140〜160℃であり、前記絵柄層の表面が凹凸面形状をなして厚さが連続的に変化した、
ことを特徴とする積層シート。 - 前記絵柄層は、当該絵柄層を厚み方向に切断した断面において絵柄層の上辺が異なる曲率半径を有する複数の曲線を連ねた形状を有し、且つ互いに平行である複数の断面における絵柄層の断面形状が異なる、ことを特徴とする請求項1に記載の積層シート。
- 前記絵柄層において、互いに平行である複数の断面における断面積が異なる、ことを特徴とする請求項2に記載の積層シート。
- 前記着色層が光輝性を有する、ことを特徴とする請求項1〜3のいずれか1項に記載の積層シート。
- 光透過性を有し、軟化温度が120℃以下である樹脂層の一方の面に、軟化温度が120℃以下である着色層と、軟化温度が120℃以下であるバッキング層を順次積層し、
その後、前記樹脂層の他方の面に電離放射線硬化型樹脂インクを付与し、電離放射線硬化型樹脂インクに電離放射線を照射することにより、光透過性を有し、軟化温度が140〜160℃であり、且つ表面が凹凸面形状をなして厚さが連続的に変化した絵柄層を形成する、積層シートの製造方法。 - 請求項1〜4のいずれか1項に記載の積層シートと、前記積層シートに一体化された成形樹脂層とを含み、前記絵柄層の表面が平滑であり、且つ前記バッキング層が前記成形樹脂層と接している、ことを特徴とする成形体。
- 前記絵柄層と前記樹脂層との境界面、前記樹脂層と前記着色層との境界面、および前記着色層と前記バッキング層との境界面が、互いに平行な凹凸面形状をなしている、ことを特徴とする請求項6記載の成形体。
- 請求項6または7記載の成形体を製造する方法であって、前記絵柄層側を金型キャビティ面に向けて前記積層シートを金型キャビティ内に配置し、前記積層シートのバッキング層側に樹脂を注入し、前記絵柄層側を金型キャビティ面に押し付けながら、前記成形樹脂層を成形する、ことを特徴とする成形体の製造方法。
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