| 摘要 |
<p>A core for an elastomeric tubing assembly is produced from a ribbon (30) helically wound on itself to form a cylindrical tube. The edges (32, 34) of the ribbon (30) are formed to interlock with each other and are contoured to facilitate ultrasonic welding of the edges (32, 34). A support member (50) is coextruded in the ribbon (30) to provide increased resistance to premature collapse of the tube.</p> |
