LAMINATED FILM AND PACKAGING MATERIAL

• Main Authors: YAMAMOTO, YOHZOH, KOKURYO, MASARU, AMADA, YASUSHI, MIHARU, KENJI
• Format: Patent
• Language: English; Korean
• Published: 15.09.1999
• Edition: 6
• 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

본 발명의 적층 필름은 열가소성 폴리에스테르 수지(A)층과 환상 올레핀계 수지(C)층이 접착제(B)층을 거쳐서 적층되고, 상기 (A)층 및/또는 (B)층이 2축 연신되고, 열가소성 폴리에스테르 수지(A)층의 두께(합계)가 0.0550μm, 접착제(B)층의 두께(합계)가 0.520μm, 환상 올레핀계 수지(C)층의 두께(합계)가 5150μm인 적층 필름이며, 내열성, 내충격성, 수증기 차폐성 및 개봉용이성이 우수하며 또한 저가로 제조할 수 있다. A laminated film superior in the heat resistance, shock resistance, moisture-barriering property and easy hand-tearability, which comprises one or more layers of a thermoplastic polyester resin (A), one or more layers of a resin based on cycloolefin (C) and one or more interposed layers of an adhesive (B) between layer (A) and layer (C), wherein the layer(s) of the thermoplastic polyester resin (A) and/or the layer(s) of the resin based on cycloolefin (C) have been biaxially stretched and wherein the total thickness of the layer(s) of the thermoplastic polyester resin (A), the total thickness of the layer(s) of the adhesive (B) and the total thickness of the layer(s) based on cycloolefin (C) are 0.5 - 50 mu m, 0.5 - 20 mu m and 5 - 150 mu m, respectively.