Warzenplatte mit offenen Zellen,zur Herstellung von Bauplatten,Waenden u.dgl. geeignet,sowie Verfahren zur Herstellung derselben

摘要

Thermoplastic sheet material is pressed at softening temp. to prevent tearing between two parallel press tools, each with a large number of parallel press posts so that material is deformed simultaneously from both sides into open, curved, truncated cones whose tops lie in two parallel planes, the two sets of cups so formed opening in different directions and being joined by curved surfaces. Cheap replacement for honeycomb material used in sandwich type wall boards.