This process occurs in multiple stages and is responsible for binding the raw strands of filament yarns together. These twisted yarns or plies may be re-twisted to form a thicker cord or cable.
Twisting multiple filament yarns together primarily increases the tensile strength, but depending upon the frequency of the twists it may also affect other characteristics such as, thickness, appearance, moisture absorption, shrinkage, abrasive properties etc. of the final product. A couple of important parameters to consider during this process include Twist imparted Per Meter/Inch (TPM/I) and Twisting Direction (S/Z). The twisting machines include German made Saurer Allmas.
This process entails passing the twisted yarns and cords through specially prepared dip solutions in multiple stages. The dip solutions provide stiffness & excellent adhesive properties to the cords & Yarns. The dipping process is interspersed with heat treatment to promote curing. This helps modify cord properties such as elongation, free heat shrinkage & heat shrinkage force in a controlled manner. The dipping machines utilised include German made Zell Benningers.
Post dipping cords are wound on metal bobbins or cardboard tubes of dimensions required by the customer. The wound weight of a single tube may vary between 0.8 – 10 kilograms and the wound weight of a metal bobbin between 8 – 13 kilograms. The autowinding machines ensure that a constant tension is maintained on the cords and yarns throughout the winding process.
TThis results in the desired tight wind and prevents the occurrence of stitches. The unit employs high performance SAHM winders from Germany.
Apart from the continuous online inspection our end products are chosen with a high statistical significance to pass through rigorous testing regimes. These include testing for properties such as tensile strength, elongation, heat shrinkage, shrinkage force, adhesion, diameter, weight/meter etc. Our state of the art laboratory is equipped with heating ovens, Testrite™, Instron™ and mould pressing machines. We maintain historic records of all our test data for further research, development & fine tuning purposes.