About the Institute :
The Central Institute for Research on Cotton Technology (CIRCOT), Mumbai, is a research institute under the Indian Council of Agricultural Research (ICAR). It focuses on cotton technology, fibre and yarn quality evaluation, textile processing, and the utilization of agricultural and industrial waste. The institute also works on developing innovative materials and products for technical textiles and sustainable applications.

Objective of the Visit :
The objective of the industrial visit was to understand the working of textile machinery, fibre and yarn testing methods, technical textile applications, and waste utilization technologies used at CIRCOT.

Departments Visited and Observations : 

A. Mechanical Processing Department
We observed the processing of different fibres, including cotton, hemp, linen, banana, coir, rabbit fur, viscose, and para-aramid. Various spinning systems were demonstrated, such as ring spinning, compact spinning, rotor spinning, and DREF friction spinning.

The compact spinning machine uses a perforated belt and suction to reduce the spinning triangle and yarn hairiness. We also learned about core-spun yarn production and the manufacturing of cut-resistant and heat-resistant gloves using fibres such as para-aramid and HDPE, with nitrile coating for improved grip and wear resistance.

B. Fibre Testing Laboratory
The High Volume Instrument (HVI) was demonstrated for cotton quality evaluation. It measures fibre length, strength, uniformity, micronaire, elongation, moisture, and colour properties. The instrument uses airflow and electro-optical principles to evaluate cotton quality. Calibration cotton samples are used to maintain the consistency of test results.

C. Yarn and Fabric Testing Division
We observed testing equipment used to determine yarn count, breaking strength, elongation, twist, and unevenness. The Uster Tester measures yarn irregularities, including thick places, thin places, and neps. These tests help identify defects and improve yarn quality before fabric manufacturing.

D. Pulp, Paper and Nanocellulose Processing
We learned about the utilization of agricultural waste and other residues for producing cellulose-based materials. The process involves cleaning, chemical treatment, washing, beating, and mechanical processing. Nanocellulose production was also discussed, along with its potential applications in paints, cement, paper, and other products.

Conclusion :
The industrial visit to CIRCOT provided valuable practical knowledge about fibre processing, spinning technologies, textile testing, technical textiles, and waste utilization. It helped us understand the importance of quality control, innovative fibre applications, and sustainable manufacturing in the textile industry.