VACUUM INSULATION PANEL - NISSHIN STEEL CO LTD

Title:

VACUUM INSULATION PANEL

Document Type and Number:

WIPO Patent Application WO/2018/043712

Kind Code:

A1

Abstract:

By suppressing thermal conductivity increase for a certain period of time immediately following the manufacture of this vacuum insulation panel, good heat insulation performance close to that exhibited immediately following manufacture is maintained for a long time. The present invention pertains to a method for manufacturing a vacuum insulation panel, wherein a core material (1) made of inorganic fibers is wrapped with an outer packaging material (2) made of a stainless steel plate, and the inner space (3) of the outer packaging material (2) wrapping the core material (1) is in a vacuum state. The water content of the core material (1) is 0.05 wt% or less, the surface roughness Ra of the inner space-side surface of the outer packaging material (2) is 0.2 μm or less, and the peripheral edge portion of the outer packaging material (2) is sealed by welding in a state in which the pressure of the inner space (3) of the outer packaging material (2) is 1 Pa or less.

Inventors:

AZUMA TSUTOMU (JP)
MISHIMA HIROHISA (JP)
NAKAKO TAKEFUMI (JP)
KUBONIWA SEIICHI (JP)

Application Number:

PCT/JP2017/031619

Publication Date:

March 08, 2018

Filing Date:

September 01, 2017

Export Citation:

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Assignee:

NISSHIN STEEL CO LTD (JP)
MAG ISOVER K K (JP)

International Classes:

F16L59/065

Domestic Patent References:

WO2016006186A1

2016-01-14

Foreign References:

JP2016517944A	2016-06-20
JP2002363754A	2002-12-18
JP2015158261A	2015-09-03
JP2017053400A	2017-03-16

Other References: