LAMINATE, OPTICAL MEMBER AND OPTICAL DEVICE

• Main Authors: MORISHIMA RYOTA, KISHI ATSUSHI, HATTORI DAISUKE, SUGINO SHOKO
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2019
• 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

To provide a laminate of a porous layer and a pressure-sensitive adhesive layer, where the laminate both has pressure-sensitiveness or adhesiveness and prevents a pressure-sensitive agent or adhesive agent from infiltrating into pores.SOLUTION: A laminated has a porous layer (20) and a pressure-sensitive layer (30), where the pressure-sensitive layer (30) is directly laminated on one surface or both surfaces of the porous layer (20); the porosity of the porous layer (20) is at least 35 vol%; and the residual porosity of the porous layer (20) after a heating and humidifying durability test in which the porous layer (20) is maintained for 500 h at a temperature of 85°C and a relative humidity of 85% is at least 50 vol% of the porosity of the porous layer (20) before the heating and humidifying durability test.SELECTED DRAWING: Figure 1 【課題】粘着力または接着力と、空隙への粘着剤または接着剤の浸透しにくさとを両立した、空隙層と粘接着層との積層体の提供。【解決手段】空隙層２０と、粘接着層３０とを含み、粘接着層３０が、空隙層２０の片面または両面に直接積層され、空隙層２０の空隙率が、３５体積％以上であり、温度８５℃かつ相対湿度８５％で５００ｈ保持する加熱加湿耐久性試験後の、空隙層２０の空隙残存率が、加熱加湿耐久性試験前の５０体積％以上である積層体。【選択図】図１