LAMINATE OPTICAL MEMBER AND OPTICAL DEVICE

• Main Authors: MORISHIMA RYOTA, KISHI ATSUSHI, HATTORI DAISUKE, SUGINO AKIKO
• Format: Patent
• Language: English; Korean
• Published: 05.07.2023
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

본 발명은, 점착력 또는 접착력과, 공극에 대한 점착제 또는 접착제의 침투 어려움을 양립한, 공극층과 점접착층의 적층체의 제공을 목적으로 한다. 상기 목적을 달성하기 위해서, 본 발명의 제 1 적층체는, 공극층 (20) 과, 점접착층 (30) 을 포함하고, 점접착층 (30) 이, 공극층 (20) 의 편면 또는 양면에 직접 적층되고, 공극층 (20) 의 공극률이, 35 체적％ 이상이고, 온도 85 ℃ 그리고 상대 습도 85 ％ 로 500 h 유지하는 가열 가습 내구성 시험 후에, 공극층 (20) 의 공극 잔존율이, 상기 가열 가습 내구성 시험 전의 50 체적％ 이상인 것을 특징으로 한다. The purpose of the present invention is to provide a laminate of a porous layer and an adhesive layer, wherein the laminate both has pressure-sensitive adhesiveness or adhesiveness and is difficult for a pressure-sensitive adhesive agent or adhesive agent to infiltrate into pores. In order to achieve the above purpose, a first laminate of the present invention is characterized by including a porous layer (20) and an adhesive layer (30), wherein: the adhesive 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 performing 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.