Title:
VACUUM HEAT INSULATING MATERIAL
Document Type and Number:
Japanese Patent JP2014209011
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve handleability by reducing bulk of a core material of a vacuum heat insulating material and to suppress deterioration of heat insulating performance.SOLUTION: A vacuum heat insulating material is configured by: a core material 51 made of fiber assembly; an adsorbent 54 for adsorbing gas or moisture; and an external coating material 53 for accommodating the core material 51. The fiber assembly is formed by an end part 60 comprising a plurality of outer sides and a central part 61 surrounded by the end part 60. In the core material 51, the density of the fiber assembly in the end part 60 to which compression processing is applied is higher than the density of the fiber assembly in the central part 61, and the adsorbent 54 is disposed at the central part 61 of the core material 51 accommodated in the evacuated external coating material 53. Also, needle punch processing is applied to the fiber assembly, and the density of the needle punch processing is low in the central part of the fiber assembly, and the density of the needle punch processing is high in the end part.
Inventors:
ARAI YUSHI
ARAKI KUNINARI
ECHIGOYA HISASHI
TERAUCHI YASUTO
KAMOTO DAIGORO
ARAKI KUNINARI
ECHIGOYA HISASHI
TERAUCHI YASUTO
KAMOTO DAIGORO
Application Number:
JP2013085924A
Publication Date:
November 06, 2014
Filing Date:
April 16, 2013
Export Citation:
Assignee:
HITACHI APPLIANCES INC
International Classes:
F16L59/06
Attorney, Agent or Firm:
Patent business corporation Takekazu international patent firm
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