| 摘要 |
1,210,284. Insoles. SCHOLL MFG. CO. Ltd. 24 Jan., 1968 [16 Feb., 1967], No. 3781/68. Heading A3B. [Also in Division B5] An insole comprises a thermoplastic covering 14 bonded to a more rigid backing member 10a, a foam cushioning layer 15 optionally being present. The covering 14 is electronically heat-sealed around the edge of the backing 10a by energizing dies 1, 7a which are shaped to fold the covering around the backing; current flows through a pedestal 18 which corresponds to the shape of the backing 10a (see Fig. 6, not shown). An equal path is provided at part for current to pass between the dies by a dielectric buffer 2 which underlies the pedestal 18 at the edges 19 thereof. |
