Fire protection door plate, has core with fiber glass reinforced concrete slab including fibers of specific length, where slab is built in sandwich structure, and plate has thickness of less than about fifty five millimeters

摘要

The plate has connecting materials with a sheathing layer (12) that are made of wood material. The plate has a thickness of less than about fifty five millimeters. The plate has a core with a fiber glass reinforced concrete slab (11) which includes fibers with a length of specific centimeters. The slab is built in a sandwich structure with a core layer from a material of smaller molded density.