Ministry of Science & Technology, Government of India
Eco-friendly and user-friendly machines for hank processing cottage industry
BTRA developed prototype model of hank dyeing machine has served its purpose of being “user-friendly”. As hank movement is partially mechanized, dyeing operations on the hank dyeing machine has minimized the exposure to the hot liquor, hanks, chemicals, etc. In the weft pirn sizing machine, features like guiding path inside the sizing trough, squeezing rolls has minimized the handling of material and size bath chemicals. The productivity of the pirn sizing operation has increased 2-4 times with the pirn sizing machine. Colour fastness testing of samples on hank dyeing machine showed comparable and better results for wash, light and rubbing fastness than that for conventionally dyed samples. As the configuration of this model is very simple, it can be modified as per the production and process requirement.
CP-STIO – Visit of Dr. A.N. Netravali, U.S.A., in connection with implementation of the collaborative project entitled “Surface modification of high strength fibres/fabrics using plasma technology for enhancing the formation of advanced composites and energy/water saving during textile manufacturing
The project was carried out jointly between BTRA and Prof. A.N. Netravali from Cornell University, Ithaca, USA. Accordingly, Prof. Netravali visited BTRA on three occasions (December 2007, December 2008 and December 2009) each for duration of two weeks. It was demonstrated that plasma processing can be used for textile fabrics to get desizing and improving dyeing behaviour. In addition, the hydrophobic coating can be deposited on the fabric to get hydrophobic properties. Detailed calculation showed that there will be substantial saving in water and energy and also reduction in pollution during processing. Plasma treatment of fibres/fabrics also improved the bonding between fibres and resins to yield better quality of composite materials. Not only glass fibres but also carbon and natural fibres could be used for forming “green composites”.