| 摘要 |
A method of sealing at least two portions (12, 13) of two flat bodies (20, 20b), characterized by including the steps of: (a) superimposing the at least two portions (12, 13); (b) placing an elongated element (13) of thermoplastic material in contact with at least one of the two portions (12, 13); (c) melting at least one portion of the elongated element (13) to seal the two portions (12, 13) as required. |
