Draw Texturising Yarn Path Explained
Understanding the yarn's journey through the draw texturising machine is essential for process control. The sequence involves several key units.
Correct Yarn Passage Sequence
The yarn follows a specific path starting from the yarn source to the final winding package:
- Creel (D): The process begins at the creel, where the original yarn packages (like bobbins or cones) are mounted. Yarn is drawn from these packages.
- Primary Heater (A): The yarn is then passed over or through a primary heater. This heats the yarn, making it softer and more pliable, which is necessary for the subsequent texturising step.
- Friction Unit (E): After heating, the yarn enters the friction unit. Here, it undergoes texturising, typically achieved by twisting and untwisting using friction discs, which imparts bulk and texture.
- Secondary Heater (B): Post texturising, the yarn often passes through a secondary heater. This step helps to 'set' the newly acquired texture, making it more permanent and stable.
- Winding Unit (C): Finally, the processed yarn is collected and wound onto a new package (e.g., a cone) at the winding unit, ready for the next stage of manufacturing.
Therefore, the complete and correct passage sequence for the yarn in the draw texturising machine is represented by the order: Creel (D), Primary Heater (A), Friction Unit (E), Secondary Heater (B), and Winding Unit (C).