# Study of the sectional warping machine and planning the width of a section according to pattern of the given striped fabric

Introduction:

Sectional warping is a process of preparing yarn for weaving, which involves winding it onto a beam in sections. The width of each section is determined by the pattern of the fabric being produced. In this lab manual, we will study the sectional warping machine and plan the width of a section according to the pattern of the given striped fabric.

Equipment Required:

1. Sectional Warping Machine
2. Striped Fabric Pattern
3. Yarn
4. Measuring Tape
5. Calculator

Procedure:

1. First, we need to understand the components of the sectional warping machine. The machine consists of a creel, tension device, guide bar, and a beam.
2. Set up the creel by placing the cones of yarn onto the pegs. Make sure that the yarn runs smoothly from the cones to the tension device.
3. Set the tension device to the desired tension for the yarn being used.
4. Load the guide bar with the pattern for the fabric. The guide bar determines the width of each section.
5. Measure the width of one repeat of the pattern on the fabric.
6. Calculate the number of sections required to produce one repeat of the pattern. Divide the total width of the fabric by the width of one repeat.
7. Calculate the width of each section. Divide the width of one repeat by the number of sections required.
8. Adjust the guide bar to the desired width for each section.
9. Wind the yarn onto the beam in sections. Make sure that each section is evenly tensioned and that the yarn is wound smoothly.
10. Once all the sections have been wound onto the beam, check the tension of the yarn and adjust if necessary.
11. Cut the yarn and tie it off at the end of the beam.
12. Remove the beam from the machine and label it with the relevant information, such as the yarn type and the pattern.

Conclusion:

In this lab manual, we studied the sectional warping machine and planned the width of a section according to the pattern of the given striped fabric. We learned about the components of the machine, such as the creel, tension device, guide bar, and beam. We also learned how to calculate the number of sections required and the width of each section. By following these steps, we can produce yarn that is ready to be used for weaving the desired pattern of the fabric.