| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure wadding-free core yarn not to be produced by surely sensing the presence/absence of a wadding in core yarn. <P>SOLUTION: A method for detecting the presence/absence of a wadding F in core yarn is presented, comprising the following practice: In a process for producing core yarn C by wrapping fiber bundles S around a wadding F, core yarn C with the wadding F content altered from the case with ordinary spinning operation is spun; alternatively, core yarn C containing a wadding consisting of drawn elastic yarn is spun and then slackened to see whether the thickness of the core yarn C is altered. <P>COPYRIGHT: (C)2007,JPO&INPIT |
