적층 필름

• Main Authors: TAMURA MAYUMI, MATSUI HISATO, UTO TAKAYUKI, GOUDA WATARU
• Format: Patent
• Language: Korean
• Published: 20.05.2024
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

본 발명은, 광학 특성 등의 성질이 더 균일하고, 또한 당해 성질을 더 장기간에 걸쳐서 유지할 수 있는 적층 필름을 제공하는 것을 과제로 하고, 상이한 2종류 이상의 열가소성 수지층을 갖고, 상이한 열가소성 수지층으로 형성되는 모든 종류의 계면에 있어서, 필름 두께에 대한 GCIB-TOF-SIMS에서 해석한 계면층 두께의 비율을 산출했을 때, 가장 낮은 값이 1.0×10-4 이상 1.0×10-2 이하인 것을 특징으로 하는, 적층 필름인 것을 본 취지로 한다. The present invention addresses the problem of providing a laminated film that has further uniform properties regarding optical characteristics and the like, and that can maintain said properties for a further extended period of time. This laminated film is characterized by comprising two or more different types of thermoplastic resin layers and is characterized in that, when ratios of interface layer thicknesses analyzed through GCIB-TOF-SIMS with respect to the film thickness are calculated in all types of interfaces formed by the different thermoplastic resin layers, the lowest value thereof is 1.0×10-4-1.0×10-2.