TRANSPARENT RESIN LAYER FOR DECORATIVE SHEET AND MANUFACTURING METHOD THEREFOR, AND DECORATIVE SHEET AND DECORATIVE PLATE HAVING THE TRANSPARENT RESIN LAYER

To provide a transparent resin layer for decorative sheet consisting of a monolayer film of an ionomer element containing no resin component other than an ionomer nor an additive (such as a crosslinking agent), and achieving excellent heat resistance and scratch resistance, and a manufacturing metho...

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Bibliographische Detailangaben
Hauptverfasser: KAYAHARA TOSHISHIGE, SAKURAI MITSUO, TAMUKI JUNICHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a transparent resin layer for decorative sheet consisting of a monolayer film of an ionomer element containing no resin component other than an ionomer nor an additive (such as a crosslinking agent), and achieving excellent heat resistance and scratch resistance, and a manufacturing method therefor, and a decorative sheet and a decorative plate having the transparent resin layer.SOLUTION: There is provided a transparent resin layer for decorative sheet, in which (1) the transparent resin layer is constituted by an electron beam crosslinked article of an ionomer consisting of an ethylene-methacrylic acid copolymer and a zinc ion, and (2) the transparent resin layer has melting point measured by DSC of 74 to 88°C, dimensional change rate measured by heat machine analysis with tensile mode 90°C of 5% or less, and storage elasticity measured by dynamic viscoelasticity analysis with tensile mode 100°C of 2×10to 1×10.SELECTED DRAWING: None 【課題】アイオノマー以外の樹脂成分及び添加剤(架橋剤など)を含有しないアイオノマー単体の単層フィルムからなる化粧シート用の透明性樹脂層であって、優れた耐熱性及び耐傷性を発揮する透明性樹脂層及びその製造方法、並びに当該透明性樹脂層を備えた化粧シート及び化粧板を提供する。【解決手段】化粧シート用の透明性樹脂層であって、(1)前記透明性樹脂層は、エチレン−メタクリル酸共重合体と亜鉛イオンとからなるアイオノマーの電子線架橋物により構成されており、(2)前記透明性樹脂層は、DSCで測定した融点が74〜88℃であり、引張モード90℃の熱機械分析により測定した寸法変化率が5%以下であり、且つ、引張モード100℃の動的粘弾性分析により測定した貯蔵弾性率が2×107〜1×109である、ことを特徴とする透明性樹脂層。【選択図】なし