| 摘要 |
An apparatus for forming an inflatable closing plug has a winding head rotatable around a path defining a winding plane. The winding head is arranged to dispense one or more continuous lines (7) from a supply of line (5) via a guide arrangement (12, 13). A preform (3) is rotationally supported on an axis at a shallow angle with respect to the winding plane (w) such than the winding plane intersects the preform. By providing a spreading arrangement to locate the windings (16A, 16B, 16C) on the preform over a band (18) having a width perpendicular to the winding plane (w), a smoother distribution of windings can be achieved. |
