| 20110268928 | METHOD OF SEALING HOLLOW MULTI-WALLED PANELS AND PANELS THUS OBTAINED - The open edge(s) of a multi-walled panel made of a thermoplastic resin are sealed by selecting a resin film or tape having a width that is greater than the thickness of said panel edge(s), welding the resin layer to the panel edge(s) to provide a projecting portion of said layer on at least part of at least one side of the said panel, and removing at least part of said projecting portion(s) from the sealed panel. | 11-03-2011 |
