Multilayer type insulator for inner insulation of dwelling, has insulating part with sub part having fireproof polyethylene film layer comprising dry air bubble, where part is arranged between two reflecting layers with aluminum films

摘要

The insulator has an insulating part (P) with a sub part (SP1) having a fireproof polyethylene film layer (10) comprising a dry air bubble (101), and a fireproof polyethylene foam layer (11). Another sub part (SP2) has fireproof polyethylene film layers (12, 14) with dry air bubbles (121, 141), respectively, and a fireproof polyethylene foam layer (13). The part (P) is arranged between two reflecting layers (15, 16) with aluminum films.