|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||52/232 ; 29/5271 ; 52/303 ; 264/465|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 29 인용 특허 : 0|
A fire-resistant door or other building panel for cold storage compartments includes a sheet-metal casing containing a core of plastic foam insulation with a layer of a hydrous sodium silicate composition between the plastic foam core and the walls of the casing. In case of fire or high temperature conditions near the panel the silicate composition expands, forming a thick, cellular heat barrier that shields the foam plastic and affords fire protection equivalent to that of an approved fire door.
A fire-retardant low temperature insulating panel comprising: a. a sheet metal casing having top, bottom, side and end walls, b. a layer of hydrous alkaline metal silicate substantially completely lining the interior surfaces of said casing, and c. a poured core of polymeric foam resin filling the interior of the lined enclosure.