ApplicationNo. 07/021238 filed on 03/03/1987
US Classes:602/7, By heat application602/14With ventilation, heating, or cooling means
ExaminersPrimary: Hafer, Robert A.
Assistant: Rooney, Kevin G.
Attorney, Agent or Firm
International ClassesA61F 13/04 (20060101)
A61L 15/00 (20060101)
A61L 15/07 (20060101)
B29C 35/04 (20060101)
B29C 35/02 (20060101)
B29C 53/02 (20060101)
B29C 53/00 (20060101)
Foreign Application Priority Data1984-05-14 CH
AbstractThe thermoformable element comprises a strip (1) formed from two layers of foam (2, 3) of a thermoplastic polymer. The layers are welded to one another along their longitudinal edges so as to form a space between them in the shape of a channel (4). The inlet for the channel can be controlled by a non-return valve (6) whereas the exit can comprise a plug (7). The element is thermoformed by circulating a fluid heated to 130° to 140° C. through the channel until the foam becomes soft.