| 摘要 |
The frame (103) comprises multiple plastic profiles (2,3), which are welded with each other at the corners of the frame. A recess or rounding with a cylindrical, round boundary surface is arranged in the corner area of the frame. The generatrix of the cylinder runs transverse to the plane of the frame. The recess in the frame is filled with a material, whose modulus of elasticity is less than that of the frame. The distance between the cylinder axis of a circular cylindrical boundary surface of an inner corner is equal to the radius of the circular cylinder. Independent claims are included for the following: (1) a building structural element with a metal lining; and (2) a method for manufacturing a frame. |
