Patents Assigned to Centro Sviluppon Settori Impiego S.r.l.
  • Process for preparing thermoinsulating and/or structural double-walled molded bodies
    Patent number: 5308557
    Abstract: A process for preparing thermoinsulating and/or structural double-walled molded bodies, which includes the following steps:(a) heating two sheets made of thermoplastic polymer to a temperature equal or slightly higher than their softening point;(b) inserting between the two sheets a pre-mold made of an expanded polymeric material;(c) thermoforming in a mold the two sheets on the pre-mold;(d) soldering together the two sheets on their rims by means of a pressure applied on them by the mold.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: May 3, 1994
    Assignee: Centro Sviluppon Settori Impiego S.r.l.
    Inventors: Antonio Addeo, Annibale Vezzoli