Types of Sheds in Weaving

Shedding is the division of warp threads (those running lengthwise) into two parts, creating a space for the weft threads (those going side to side) to be inserted. It’s like creating a gap or space in the warp threads to pass the weft threads through.

Types of Sheds in Weaving:

  1. Bottom Close Shed: This type of shedding involves moving only the threads that form the top line. It’s used in handlooms. However, it puts more stress on the top warp threads, which can lead to fabric issues like breakage.

2. Center Close Shed: Threads for both the top and bottom lines move in opposite directions and meet in the center. It’s efficient and helps maintain equal tension on top and bottom warp lines, reducing wear and tear.

3. Semi-Open Shed: Threads for the top line either go down or halfway before moving back up. It’s quicker than some types, enabling faster loom speed and compact fabric production.

4. Open Shed: Here, threads form two stationary lines, and changes occur by moving threads from one fixed line to the other without any gap. It allows for high-speed loom operation but can have a higher breakage rate and needs leveling apparatus for proper alignment.

Each type has its advantages and disadvantages in terms of fabric quality, speed, and stress on the threads. Weavers choose the shedding type based on what fabric they want to create and the loom they are using.

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