Rotary device for producing and/or processing webs, pieces, foils and composite materials

A rotary device for producing and/or processing webs, pieces, foils and composite materials, more particularly, for processing textile webs and pieces in the field of manufacturing ready-to-wear clothing and for producing and processing foils and composite materials in the field of processing synthetic materials, said rotary device comprising a double-walled hollow cylinder including radially inner and outer spaced walls, end plates at the ends of said walls and defining a vapor condensation chamber such that the radially outer wall is heated by means of vapors condensing thereon, said condensation chamber carrying a liquid for vaporization and condensation, the improvement comprising:

• one of said walls including radial projections at opposed ends and defining with said end plates annular compartments of increased radial size relative the portion of said chamber interposed between said annular compartments,
• heating elements mounted to said double walled hollow cylinder at said annular compartments, and
• a steel wool packing carried within each annular compartment and extending in a continuous, annular manner throughout each compartment such that said vaporizable liquid is distributed by said steel wool packing throughout said compartment for effective vaporization by energization of said heating elements.