Abstract: The invention relates to a method for producing elements from or comprising a material with a high heat storage capacity, especially from or comprising a phase change material abbreviated in the following as PCM which are provided with a cover. The aim of the invention is to provide elements from or comprising PCM that are suitable for a wide range of applications and that can be processed without complications. For this purpose, PCM is supplied continuously or in a clocked manner, is covered with a tube and the PCM-filled tube is subdivided into tube sections or stored, for example wound up.

Abstract: A sound-absorbing element of films has adjacent, cup-shaped recesses in the orm of a grid. The bottom surfaces of the films which are to be exposed to the sound field may be excited into dissipative vibrations when sound is incident thereon. The upper edges of the cup-shaped recesses are jointly covered by another flat material web. The bottom surfaces of the cup-shaped recesses are subdivided into bases by one or more crimp-shaped recesses, the depth of which is appreciably smaller than the depth of the cup-shaped recesses. The sound-absorbing element may be used in building, underground and tunnel construction and in vehicle construction.