| 摘要 |
There is disclosed a method of making an endless band, or a plurality of separably connected endless bands, from flexible weldable material especially plastics material. The method involves, basically, joining together two superimposed like strips of such material by welding together each pair of corresponding ends. Large quantities of such bands, separably connected together, can be continuously produced by feeding two batches of strip material forward in superimposed relationship, welding them together at intervals, and forming a tear-seal connection at the weld. Endless bands so formed are disclosed. |
