Shuttleless Weaving

Front

What is Shuttleless Weaving?

Back

Shuttleless Weaving refers to non-conventional methods of weaving where the traditional shuttle for weft insertion is not used, allowing for faster cloth production and higher weaving productivity.

Front

What are the problems associated with using a shuttle in weaving?

Back

Using a shuttle increases the loom's speed and the forces required for picking and checking, leading to wear and tear on mechanisms and potential failure unless costly modifications are made.

Front

What is Weft Insertion Rate (WIR)?

Back

WIR is a measure of loom productivity expressed as WIR = W × P m/min, where W is the reed width in meters and P is the loom speed in picks/minute.

Front

What is the significance of Spatial Productivity in weaving?

Back

Spatial Productivity is the ratio of Weft Insertion Rate to the square of the area occupied by a loom, indicating efficiency in space utilization.

Front

What are the two types of Shuttleless looms?

Back

Shuttleless looms are classified into Monophase and Multiphase types, based on how the primary motions of shedding, picking, and beating occur.

Front

What are the advantages of Shuttleless looms?

Back

Shuttleless looms eliminate the need for pirn winding, reducing production costs, and they also lower noise levels during operation.

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Why are improved qualities of yarn needed for Shuttleless looms?

Back

Shuttleless looms require stronger yarns due to higher tension and smaller shed depth, ensuring clear warp shed and effective weft insertion.

Front

What is the role of the projectile in a Projectile Loom?

Back

The projectile is a lightweight component that grips the weft yarn and inserts it through the warp shed, allowing for high-speed weaving.

Front

How does the Torsion Rod Picking Mechanism work in Projectile Looms?

Back

The Torsion Rod Picking Mechanism stores strain energy by twisting a metal rod, which is then released to propel the projectile for weft insertion.

Front

What is the function of the Warp Protector Mechanism in Projectile Looms?

Back

The Warp Protector Mechanism stops the loom if the projectile fails to reach the receiving box, preventing potential damage.