• VTS - Venus Textile Systems Private Limited

Solidring S43 for Fine PES Yarns

---

SUESSEN has developed the SOLIDRING with the S43 tooth form specially for processing fine PES yarns. For years, customers have successfully used this SOLIDRING S43 with the following advantages over the standard S21 tooth form for such applications:

• Almost no “merry-go-round” fibres, meaning the fibres are coming off better from the opening roller and get into the fibre channel
• Consequently less imperfections in the yarn
• Less tendency to shedding, especially in the subsequent weaving process

Enabling the fibres to come off the SOLIDRING teeth more easily is a result of the tooth design. The teeth of the S43 are shorter than those of the S21, further the angle of the tooth face is slightly different.

Since the teeth are shorter, the fibres cannot enter so deeply into the clothing, so that the air flow into the fibre channel detaches the fibres more safely from the SOLIDRING. On the other hand, a shorter tooth form results in less opening work to the fibre beard, meaning less accurate fibre separation. Increasing the opening roller speed compensates this lack in opening work.

In summary, short teeth and higher opening roller speeds produce better yarn quality and especially less shedding tendency when processing fine PES yarns. The advantages achieved in yarn quality have convinced the customers, anyway there was a further experience: The very same tooth design, which is responsible for the technological advantages, also implicates a technical disadvantage. Compared to standard tooth forms and speeds, the lifespan of the S43 tooth form is reduced.

You could say “quality has its price”, and some customers require the a.m. technological advantages for their yarn, so they accept the shorter lifespan. The nomination “3.6” simply defines the actual tooth pitch of 3.6 mm – this leads to 33% more teeth in the circumference compared to the former S43 SOLIDRING.

Consequently, more teeth opening the same fibre beard (compared to the former S43) causes less wear to the individual tooth of the S43-3.6 SOLIDRING, resulting in a longer lifespan. Since wear and tear do not follow linear correlations, the overall lifespan of the S43-3.6 SOLIDRING is surely not increased by a.m. 33%. Practical field tests with processing 100% PES (yarn count Ne 16) proved a 20% to 25% increase in lifespan with the S43-3.6 over the former S43. The technological advantages of the S43-3.6 SOLIDRING over the S21 SOLIDRING remain the same as for the S43 when processing PES yarns.