A METHOD OF ADJUSTING THE SHAPE OF CASSETTE-SHAPED PLATES AND A CASSETTE-SHAPED PLATE FOR ADJUSTMENT OF SHAPE

摘要

The invention relates to a method of adapting the shape of cassette-shaped plates for lining surfaces in a building, wherein the side flanges of the plates are first cut up along one and the same weakening line, and the flat central portion of the plates is then folded along the same weakening line. The invention also relates to a perforated liner cassette of plastically deformable material. The plate comprises essentially parallel rows of weakening lines. The weakening lines comprise openings and extend essentially from side edge to side edge. The distance between the individual parallel rows of weakening lines exceeds the distance between the individual openings in the weakening line.