INSIDE MATERIAL AND MANUFACTURING METHOD FOR FIRE DOOR

摘要

An internal material of fire door is provided to reduce the manufacturing cost through forming the penetration holes and fireproof covering layer. An internal material of fire door comprises as follows. A plurality of penetration holes is formed at the regular interval on the surface of internal material. The Inorganic arc layer is formed in the internal material. The fireproof covering layer is formed around he penetration hole. The manufacturing method of the fire door internal material comprises following steps: the styrofoam pulverising process(101); the internal material grinding process(102); the penetration hole boring process(103); the inorganic material dipping process(104); the dehydration process(105); the drying process(106); the fireproof covering layer composition process(107); the dehydration process(108); the drying finishing process(109).