3.Machining and processing HPL
Stresses will always occur between two different types of materials which are bonded together. Best results are achieved with a symmetrical structure of the HPL element. This is especially important when the finished composite board is intended to be self-supporting. Always use front and back sheets cut from the same direction of the laminate sheet. This is important because the expansion behavior differs greatly in the longitudinal and transverse directions. Using so-called „balancing sheets“ of equael thickness, offered by HPL manufacturers, also produces good results.
