New Teijin polyester fibre offers dyeing options
23/04/2010
Japanese fibre manufacturer Teijin Fibers has announced a new cationic-dyeable polyester polymer that can be dyed at ambient temperature and pressure.
The Osaka-based company says the V4 series also offers high levels of fibre strength and dye uptake. It will market the product globally as an ‘eco colour’ material that helps to reduce the environmental impact of the dyeing process. The first product to be introduced will be Waveron V4, a polyester fibre with a cross section of four flat peaks.
Cationic-dyeable polyester fibre is a fibre that can be coloured with cationic dyes, basic dyes that are water soluble. Conventionally, these require high temperature and pressure, making it difficult to combine them with wool, silk or other natural fibres that tend to lose strength and texture when subjected to extreme conditions.
Since the new Teijin product can be dyed at ambient temperatures of 100 degrees Celsius or less, as well as at ambient pressure, the V4 dyeing process requires 30% less power and steam energy consumption and can produce 25% fewer CO2 emissions compared to conventional dyeing at 130 degrees Celsius and 1.3 atmospheres, according to tests conducted by Teijin Fibers.
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