Yarn dyeing - by bringing unwinding yarn into contact with a transfer roller by time periods

摘要

The yarn is unwound from a bobbin to a take-up spool, this spool being mounted on a pivoted support which can bring it into contact with a transfer roller, semi-immersed in dyestuff. According to the time period of contact, a specific length of yarn can have dyestuff applied to it allowing sectional dyeing or sections of different dyes in regular and determined lengths.