Abstract: A process for manufacturing latex-, PVC- and plasticizer-free textile or plastic floor or wall coverings, which contain a foamed layer, in which a powder mixture containing:(1) 100 parts by weight of a thermoplastic polymer;(2) 0-100 parts by weight of fillers;(3) 0.5-7 parts by weight of blowing agents; and(4) 0-30 parts by weight of additives;is scattered onto a backing layer, melted at a temperature within the range of from about 70.degree. to about 110.degree. C. smoothed between smoothing rolls and foamed at a temperature within the range of from about 120.degree. to about 200.degree. C.

Abstract: A molding core, consisting of a plurality of flexible metal plates, for the manufacture of cylindrical hollow bodies or wound sections of fiber-reinforced synthetic resin. The metal plates are fixed to support members which in turn are connected to frames. To release the hollow bodies or wound sections, two diametrically opposed metal plates can be tilted inward and the frames can be moved toward one another by means of a common drive. It is possible to assemble a plurality of hollow bodies or wound sections to form vessels of large volume.