Evacuated heat insulation unit.

摘要

A plate like insulation unit which includes an evacuated bag (12) having two gas impermeable films (16) (18) sealed at peripheries thereof to form the bag (12) and a heat insulating core material (14) charged into the bag (12). The one gas impermeable film (16) of the bag (12) is a first film having a first metallic foil laminated to extend to the peripheries thereof, and the other gas permeable film (18) is a second film having a metallic layer vapor deposited.