10. SHRINK PROOF FINISH

10. RESIN LESS SHRINK PROOF FINISH

A new shrink-proof process for cellulose clothing material such as cotton or rayon fabrics has been developed. The distinguishing feature of the new process is the achievement of remarkable properties through a physiochemical approach without using any chemical agent such as resin.

There is a crystal conversion from Cellulose I to Cellulose III by liquid ammonia treatment and reconversion to Cellulose I on hot water treatment. The degree of this crystal conversion and reconversion is proportional to its treatment temperature and time.

In other words, cellulose fiber can swell sufficiently through ammonia liquor treatment and at the same time there is crystal conversion from I to III. When hot water treatment is carried out, the crystal reconverts from III to I, but this time without changing the shape of the fiber. These changes occur in the crystalline and non-crystalline region both and hence the whole structure gets stabilized and no deformation due to water absorption will occur afterwards.

Thus, good crease recovery and wash-n-wear properties are achieved. It is easy to pleat during ironing so even tailor-made shirts can be finished.

Further if pleats and creases are added before hot water treatment, permanent durable press finish is obtained. In addition to all these effects, quick property is also achieved in Celtopia finished fabric.

Celtopia as a multi-functional finish:

The features of Celtopia can be summarized as follows:

1. Resin-like shrink-proofing without resin.

2. Durable crease without resin.

3. Possible to wash Rayon and Cupro with water.

4. Less occurrence of skin irritation due to pure cellulose.

5. A fresh feel thanks to the high-level of water and moisture absorbency.

6. Additional quick-dryness.

7. Environmentally friendly.