Question 38 (Textile Engineering & Fibre Science)
In air-jet weaving, the acceleration of the weft yarn will be maximum when the yarn is
| (A) | Coarser and more hairy |
| (B) | Coarser and less hairy |
| (C) | Finer and less hairy |
| (D) | Finer and more hairy |
[Show Answer]
D
Frequently Asked Questions | FAQs
Which type of yarn have higher yarn velocity in air jet weaving?
In air jet weaving, high-speed air is used to propel the yarn through the shed of the weaving machine. The yarn velocity in air jet weaving depends on several factors, including the properties of the yarn, the air pressure, and the design of the weaving machine.
Generally, yarns with lower linear density (i.e., finer yarns) have higher yarn velocity in air jet weaving compared to yarns with higher linear density (i.e., coarser yarns). This is because finer yarns offer less air resistance, and can be propelled more easily through the shed by the air jet.
In addition to linear density, the tensile strength and elongation properties of the yarn also play a role in determining its velocity in air jet weaving. Yarns with higher tensile strength and lower elongation are generally easier to handle in air jet weaving, and can achieve higher velocities.
It is important to note that the optimal yarn for air jet weaving will depend on the specific requirements of the fabric being produced. Factors such as the desired fabric weight, drape, and texture will influence the choice of yarn, in addition to the weaving machine parameters.