| 摘要 |
A cleaning device (1) and method of making which is constructed from a flexible base member (2) of thermoplastic material to which a plurality of fibers (3) are fused and protrude therefrom, and formed into a curvilinear configuration such as a helix-like (4), or U-shape-like (63-65) configuration. The method includes the steps of heating the base (2) until it is softened and bent to a U-shape like configuration and then cooling the base member (2), or helically winding the base (2) onto a rotating mandrel (11); stopping the mandrel (11) and severing an end of the base member (2); and cooling the base member (2) so that it retains its U-shape or helical configuration. A core member (78) may also be inserted through the opening in the helix-like configuration and attached at one or more points of the base member (2) permitting the cleaning device (1) to be pushed through tubular members (45).
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