Vacuum heat insulator and heat insulating box

• Main Authors: MUKAIYAMA, Takayoshi, ABIKO, Shohei, FUJIMURA, Kazumasa, OMORI, Yuki, TAKAI, Hiroaki
• Format: Patent
• Language: English
• Published: 15.07.2021
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

Provided is vacuum insulation material that comprises a core material comprising a fiber aggregate, and an outer package covering the core material, and that blocks heat in the direction of the insulation by the interior of the outer package being at a reduced pressure and sealed, wherein: the core material is manufactured by a continuous filament method; the mean fiber length of the core material is 7 cm or greater and within a range that can be physically accommodated in the outer package; the average angle formed by the direction in which the core material fibers extend and the face orthogonal to the insulation direction is 0° to 10°; and the density of the core material in the interior of the outer package is 280 kg/m