Lakshmi RoCoS Compact Spinning System

An achievement through competence

The Ring Spinning Technology is moving ahead much faster with a high degree of certainty that “The Future in Ring Spinning will belong to Compact Yarn Technology”. The market share of compact yarn is increasing in the global market due to the twin advantages of lower hairiness and higher strength. Lakshmi RoCoS offers an economical, reliable and flexible solution for the production of compact yarn.

Spinning triangle

The fibre band will be reduced to the desired yarn count at the main drafting zone in the conventional ring spinning System. Once the fibres emerge from the nip of the delivery drafting roller, the spinning triangle is formed mainly due to the loss of cohesion within the fibre band. Due to the formation of spinning triangle, the stress imparted over the peripheral fibres will be higher than the fibres at the core-ref.

The peripheral fibres which are under high tension, during the process of twisting will try to move away from protruding fibres, causing hairiness in the yarn.

The spinning triangle, in addition to the imbalance created in the stress level between the peripheral fibres and fibres, at the core will have further decisive influence on:

• Alignment of fibres towards the axis of the yarn.
• Reduction in the strength of yarn

The insufficient yarn strength becomes evident when the yarn is subjected to tensile load in the subsequent process, where the peripheral fibres which are already under high tension will try to break first, exhibiting lower yarn strength. The increased hairiness, protruding fibres on the yarn surface will influence the appearance of yarn. Hence, it is imperative to eliminate the formation of spinning triangle to obtain higher and strength and lower hairiness.

Elimination of spinning triangle

Lakshmi RoCoS Compact Spinning System eliminates the formation of spinning triangle with magnetic compacting.

• The fibres emerging after the drafting process at the nip of the delivery drafting roller, are compacted through a specially designed path in the magnetic compactor.
• The specially designed path has wider opening at the entry point which gradually narrows down at the exit.

This principle of compacting allows both peripheral fibres and fibres at the core to remain under equal tension which contributes for enhancing the strengthen of the yarn. In addition, the cohesiveness between the fibres will also be improved due to the controlled movement of fibres and this, in turn, will not allow the fibres to deviate from its axis, resulting in the reduction of protruding hairs.

Key benefits

Improvement on yarn characteristics:

• Minimum hairiness
• Higher strength
• Improved fabric behaviour
• Better performance in downstream process

Quality results

The magnetic compacting technology yields better quality yarn in terms of hairiness (S3 - Zweigle) and single yarn strength (RKM) values.

Cost benefits

The superior cost performance ratio is not only the reason to invest in Lakshmi RoCoS, but also other economic factors, such as:

• Low operating cost
• No additional power required. Hence contributes saving of Rs 1.35 to 5.00 per every km of yarn produced.
• Higher productivity by optimizing twist insertion and low ends down.
• Less Pneumafil waste by 0.3 to 0.6 per cent.
• Ergonomic design for efficient and easy handling during maintenance.
• Benefit from total recurring cost and investment is multi-fold.
• Further benefit like elimination of waxing during winding and singeing process
• Retrofitment in the existing P3/1 drafting

Lakshmi RoCoS Compact Spinning makes all the difference

Thanks to the innovative technology incorporated in this system which offers the following.

• More cost effective
• Enhance quality in terms of hairiness (S3-Zweigle) and Single yarn strength (RKM).
• User friendly to operate.