| 摘要 |
<p>The present invention describes a method and apparatus for producing a bulk strand roving comprising a multiplicity of strands with axially extending loops interengaged and entangled with cross-axially extending loops. The roving of the present invention is made by a process that uses a finger wheel (32) to form axially extending loops in strands and a spinner (36) downstream of the finger wheel. The looped strands from the finger wheel pass through a relatively unrestricted passage in the spinner which imparts a twist to such looped strands, and then through a relatively restricted outlet orifice (42) that is downstream of the outlet of the spinner. A back-up or puddling of the looped strands occurs in the spinner near the outlet thereof, due to the axial length of the loops in the strands and the restriction in the outlet of the spinner in the form of the outlet orifice, and this back-up or puddling of the looped strands in the spinner, in conjunction with the spinning thereof, results in the formation of the cross-axial loops in the axial loops of the strands.</p> |
