HEAT INSULATION SHEET AND BUILDING MATERIAL OR CONSTRUCTION MATERIAL INCLUDING HEAT INSULATION SHEET AND BUBBLE SHEET USED IN HEAT INSULATION SHEET

摘要

PROBLEM TO BE SOLVED: To provide a heat insulation sheet relatively thin and rich in flexibility, having excellent heat insulating effect and without requiring ozone layer destruction gas and greenhouse effect gas in production; a building material and a construction material including the heat insulation sheet; and a bubble sheet used in the heat insulation sheet.SOLUTION: A heat insulation sheet comprises a first infrared reflective layer having a black-colored layer at one surface, a second infrared reflective layer facing the first infrared reflective layer with a distance with the black-colored layer in-between, and a bubble sheet arranged between the black-colored layer and the second infrared reflective layer. There are provided a building material and a construction material including the heat insulation sheet, and a bubble sheet suitable for the heat insulation sheet.SELECTED DRAWING: Figure 1