Vacuum heat insulating material, heat insulating box using vacuum heat insulating material, refrigerator, refrigerating/air-conditioning apparatus, water heater, equipments, and manufacturing method of vacuum heat insulating material

摘要

A vacuum heat insulating material (7) including: a core material (5) structured by a laminated structure of an organic fiber assembly (1) formed by forming an organic fiber into a sheet shape and cutting an end face with a predetermined length, and having a core material opening portion formed by a through hole or a notch with cutting; a gas-barrier outer cover material (4) containing the core material (5) inside, having a sealing portion for sealing surrounding of the sheet-shaped organic fiber assembly (1) and surrounding of the core material opening portion, and hermetically sealing an inside with almost vacuum status by sealing the sealing portion; and an outer cover material opening portion provided at the outer cover material (4) under a status in which the sealing portion provided at the surrounding of the sheet-shaped organic fiber assembly (1) and the surrounding of the core material opening portion is sealed, being a through hole or a notch which is smaller than the core material opening portion with a sealed amount, and a long fiber being equal to or longer than a length of the sheet is used for the organic fiber.