| 摘要 |
<p>Laminated conveyor belts consisting of one or more layers of an unstretchable base web and a cover layer of a thermoplastic material present the problem that base web may become frayed along the edges and thus be unhygienic. It is known to weld a thermoplastic string onto the edges for sealing these, but according to the invention a clearly improved sealing is obtained by cutting a groove (8) in the edge in the level of the base web and extruding into the groove a filling (18) of thermoplastic material, which, internally, will get bonded to the side faces of the groove.</p> |
