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It took 15 years to turn traditional silk production over to new, clean technology, and finally the Thai silk-fabric maker Green Ville Trading can prove that hard work yields a worthy outcome.

With its own research and development on environmentally friendly silk manufacturing processes, the plant recently received the European environmental certification, the EU Flower logo, to guarantee the production process is designed to save the environment. It's also the world's first silk fabric plant to come to grips with EU rules and standards on environmental preservation.

At the plant, the production process, especially the dying process, was changed to use less energy, and importantly, less chemical substances that are dangerous to health and the environment, said the managing director Pilan Dhammonkol.

Using its own technology, he said the plant could cut energy use by 80 per cent in the dying process compared to the previous process.

The plant spent five years on research to find a suitable dying procedure and it came out with a new continuous process which can dye the silk within three minutes. "The new technique really helps us not only save energy but also get the dyed silk fabric out much faster," he added.

Normally, a silk fabric production plant uses a dying process called exhaust technique, which takes around four hours. This technique requires more energy and chemical substances while releasing a large amount of waste water.

With the new continuous technique, the fabric is dipped in the dye and then passed through a pressing process to spread the colour evenly all over the fabric.

The fabric is then heated to fix the colour permanently on the textile and make it dry. The process takes only a few minutes.

Previously, the plant used 1.5 kilowatts of electricity to dye one kilogram of silk clothes, but with the continuous process, it uses only 0.69 kilowatts.

Meanwhile the waste-water by-product has also been reduced. The old process produced 250 litres of waste water per kilogram of dyed clothes. Now the plant releases only 80-100 litres.

Apart from the dying process, Pilan said the plant also assessed the entire production process starting from the input of all materials through to the final product to make it reach environmentally friendly goals.

"We avoided using any materials including chemicals and colour dyes that harm health or the environment so we chose new materials which are safe and biodegradable," he said.

Even though these materials are 20-per-cent more expensive, Pilan said they were of higher quality and this reduces the amount of substances used in the process. "As a result of more concern about the input of materials for the production process, the plant gets a better outcome."

The need to reprocess as a result of errors has been cut from 18 per cent of production to only 1.5 to 3 per cent, thanks to the new clean technology.

"With this reduction we can save Bt6 million each year," Pilan added.

Meanwhile, the plant also turned to biomass as a fuel source replacing fuel oil to produce energy for use in the plant. This saves around Bt10 million a year.

Pilan said the move to use clean technology allowed the plant to reach the environmental standards of the European Union and with this guarantee, it would be easier for the company to penetrate the market there.


The plant produces 2,000 yards of silk fabric a month, of which 75 per cent is for export. It also hopes that with the EU Flower guarantee, the company can expand its market to cover more European countries.


Each year, Thai textile exports generate around Bt200 billion for the country and the EU is Thailand's second largest textile market, importing Thai textiles worth Bt40 billion annually.


Pongpen Sutharoj

Source: Industry Website