Sound insulating and, in particular, also fire and/or burglary resistant structure for an outside door comprises a noncombustible core plate which is made of a water-proof mineral material of high density

摘要

The sound insulating and, in particular, also fire and/or burglary resistant structure for an outside door comprises a noncombustible core plate (6) preferably of a waterproof mineral material of high density, inner cover layers (5) of plywood (possibly with a metal layer), a stiffening frame (3) consisting of laminated wood layers, an outer frame (1) of solid wood, and outer cover elements (4) of wood or with constituents of wood.