## Jute Draw Frame | Functions of Jute Drawing | Types of Jute Draw Frame

Draw frame is an important machine in jute yarn manufacturing. In this article I will explain objects of jute draw frame, function and types of jute drawing frame. I will also give some terms and definition which are related to jute draw frame. Those will be very helpful for students to understand about jute draw frame.

Objects of Jute draw frame:

1. Straighten of fibers in the sliver.
2. Parallelization of fibers in the sliver
3. To reduce weight per unit length of the sliver by drafting
4. To reduce the the thick and thin places in the sliver
5. To increase smoothness, luster and strength of slivers by doubling.
6. To remove impurities from sliver
Functions of Jute Drawing
1. Drafting the finisher card sliver to a count suitable for feeding the spinning frames.
2. Reduction of weight irregularities by doubling.
3. Straightening the fibers & laying them along the sliver axis so that when they come to be spun on the spinning frame they will be evenly drafted & twisted to form an acceptable yarn.
Types of Jute Draw Frame

1. According to the Faller bar mechanism-
2. On the basis of yarn count-

a) For Hessian warp and weft & sacking warp yarns of 7 lbs/spindle & above,
• First drawing frame(Push bar type).
• Second drawing frame(Spiral type).
• Third drawing frame(Spiral type).
b) For sacking weft yarn 20 lbs/spindle & over,
• First drawing frame
• Second drawing frame.
Definition & terms of jute drawing frame
 Fig: Different parts of jute drawing frame
Reach: The distance from the centre point of the retraining r/r to the bite of the pressing & drawing r/r is known as reach.

Nip: The distance between the foremost gill where the pins leave the sliver & the bite of the pressing & drawing r/r is known as nip.

Pitch of Faller: The distance between the one row of pins of one faller bar to pins of next faller bar is called pitch of faller.

Lead%: The difference in the surface speed of fallers over the surface speed of retaining r/r to give sufficient tension to the sliver is known as lead%.

Surface speed of faller – surface speed of retaining r/r
Faller bar Lead% = --------------------------------------------------------------------------------× 100
Surface Speed of Retaining r/r

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### Editor-in-Chief:

Mazharul Islam Kiron is a textile consultant and researcher on online business promotion. He is working with one European textile machinery company as a country agent. He is also a contributor of Wikipedia.