Vacuum heat insulator, manufacturing method of the same,...

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F16L 59/06 (2006.01) F25D 23/06 (2006.01)

Patent

CA 2539448

A vacuum heat insulator has a core formed of a glass fiber laminated body where glass fibers are laminated in the thickness direction, and an enveloping member that covers the core and has gas barrier property. The inside of the enveloping member is evacuated and the enveloping member is sealed. The core is pressurized and molded and the glass fibers are drawn by heat deformation of the glass fibers at a temperature at which the glass fibers start to slightly deform due to own weight of the glass fibers or a temperature at which the glass fibers become deformable due to a vertical load in pressing and the sectional shapes of the glass fibers do not significantly vary. Additionally, the shape of the core is kept by entanglement of parts of the glass fibers instead of binding of the glass fibers.

Un matériau d'isolation thermique sous vide qui a un matériau de base comprenant un stratifié formé de fibres de verre laminées dans le sens de l'épaisseur et d'un matériau de couverture couvrant le matériau de base et ayant une propriété d'étanchéité au gaz, dans lequel l'intérieur du matériau de couverture est évacué et étanchéifié, et dans lequel le matériau de base est mis en forme à la température à laquelle les fibres de verre commencent à se déformer légèrement sous leur propre poids ou à laquelle les fibres de verre deviennent déformables par une charge de sens haut et de sens bas en pressant et à laquelle la forme de la coupe des fibres de verre ne subit pas de grands changements, et dans lequel les fibres de verre sont étirées par leur déformation thermique, et la forme est maintenue par l'enchevêtrement des fibres de verre les unes par rapport aux autres, pas par l'adhésion des fibres de verre entre elles.

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