LAMINATE FILM

• Main Authors: OGATA MASAMI, ABE HISASHI, TAKADA HAGUMU
• Format: Patent
• Language: English; Japanese
• Published: 15.10.2015
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

PROBLEM TO BE SOLVED: To inexpensively provide a laminate film that excels in transparency, a property to suppress interference speckles when a high refractive index hard coat layer is laminated, a coating appearance of a resin layer (suppressing irregularity in coating), scraping resistance of a resin layer (antifouling property), adhesiveness to a high refractive index hard coat layer, adhesiveness in a high temperature and high humidity environment (moisture-heat adhesiveness), adhesiveness when immersed in boiling water (adhesiveness after boiling), a property to suppress interference speckles after immersed in boiling water (visibility after boiling), and a property to suppress production of oligomers.SOLUTION: A laminate film includes a resin layer disposed on at least one side of a polyester film. The resin layer comprises at least metal oxide particles (A) having a number-average particle diameter of 3 nm or more and 50 nm or less and a polyester resin (B) containing naphthalene dicarboxylic acid as an acid component. 【課題】透明性、高屈折率ハードコート層積層時の干渉斑抑制、樹脂層の塗布外観（塗布ムラ抑制性）、樹脂層の耐削れ性（耐汚染性）、高屈折率ハードコート層との密着性、高温高湿下における接着性（湿熱接着性）、沸騰水に浸漬した際の接着性（煮沸接着性）、沸騰水に浸漬した後の干渉斑の抑制（煮沸視認性）、オリゴマー抑制性に優れた積層フィルムを低コストで提供する。【解決手段】ポリエステルフィルムの少なくとも片側に樹脂層が設けられた積層フィルムであって、該樹脂層は、数平均粒子径が、３ｎｍ以上５０ｎｍ以下の金属酸化物粒子(A)と、酸成分としてナフタレンジカルボン酸を含むポリエステル樹脂（B）を少なくとも含有する積層フィルム。【選択図】なし