Last updated on August 12th, 2023 at 05:00 pm
Selection and Batching
The selection of jute fibre from the assorted jute to produce a particular type of jute yarn is termed as the “batch”. It is done by a group of people called selectors who performed the task through a “ hand-and-eye” assessment.
Factors Responsible for Batch Selection
The selection of a particular fibre batch for a particular type of yarn depends on:
- The basic fibre characteristics like-strength, color, entanglement, defects affecting the spinnability e.t.c
- Price of raw jute.
- Grade of jute.
- Quality specification of yarn.
- Availability of jute.
- End-use of jute yarn/product.
- To produce desired quality and type of jute yarn/ product.
- To control the cost of processing and product.
- To fulfill the demand of the clients.
In order to produce an acceptable yarn the jute fibre is conditioned (i.e, kept for a definite period of time by pilling) for spinning by adding oil and water to it-is called batching.
Jute emulsion are of a simple nature, usually containing only the mineral oil, water and emulsifying agent. An emulsion is an intimate mixture of two immiscible liquids, one dispersed in droplets from inside the other. It has two phases-an external phase and an internal phase. The external phase is the water and the internal phase is the mineral oil. Batching oil is normally golden, amber in color and water is colorless but, when the two are mixed as an emulsion, the resultant liquid is milky white.