Dyes & Chemicals

NOVOZYMES
Textile enzymes for denim

The textile industry is fast to adopt new enzymes. Enzymes can provide a tool for supporting new fashions as well as improving the basic processing steps in the making of textiles.
Over recent years, Novozymes has been first with promising new enzymes and applications. Their first real breakthrough came in 1987 when Novozymes discovered a major enzyme application within the treatment of denim jeans.
They had discovered that one of their cellulases removed some of the indigo dye from denim and gave the fabric a worn look. Within a matter of three years, almost everybody in the denim finishing industry had heard of cellulases, tried them and was using them. This application based on the enzyme Denimax was the reason for the growth of textiles into a major market for industrial enzymes.
Today, Novozymes products are used widely for improving production methods and fabric finishing.
One of the oldest applications in this industry is the use of amylases to remove starch size. The warp (longitudinal) threads of fabrics are often coated in starch in order to prevent their breakage during weaving.
Cellulases have become the No. 1 tool for fabric finishing. Apart from stonewashing with the DeniMax range, the cellulase Cellusoft is used to prevent pilling and improve the smoothness, softness and colour brightness of cotton fabrics in a process which we call Bio-Polishing.
The catalase Terminox Ultra is used for degrading residual hydrogen peroxide after the bleaching of cotton. It reduces the rinsing necessary to remove bleach or it can be used to replace chemical treatments.
Novozymes' proteases are used for wool treatment and the degumming of raw silk.
Depending on the geographical area, Novozymes' textile enzymes are sold through distributors or textile auxiliary suppliers. The latter formulate their own products sold under their own brand names.
Novozymes has centres for textile research located in Denmark and the USA. Technical service labs for textiles have been established in Denmark, the USA, Japan, Brazil and Malaysia.
Chemi GROUP
Chemi-Dyestuffs Industries Ltd
Chemi-Dyestuffs Industries Ltd. belongs to the Chemi Group of Industries, who are in dyestuff business since 1956. As agent of Yorkshire Chemicals, U.K. and Mitsui, Japan. Chemi Dyestuff Industries has grown to become one of the largest well known and leading Dyestuffs Industry in Pakistan.
Built with foreign expertise, with sophisticated technology, the Chemi-Dyestuffs Industries has attained an enviable position as one of the largest producers of high quality textile and leather dyes in Pakistan.

Sodium Alginate in printing and textile industry

It has been a long history since sodium alginate was used in starching, packing and printing. In printing, it is the good material with wide use in the cotton, wool, silk and synthetic fibre. Especially since the reactive dye was found in the world, there has been many years' history of application. There is no other gelatinigation which can compare beauty with it so far.
It can't react with the reactive dye or form covalent bond as result of having second hydroxyl in its structure without the origin hydroxyl, and meanwhile having strong cathodic carboxyl in its organization. This is its great property. Therefore, it not only does not absorb the dyestuff but also excludes it. It is easy to move the dyestuff from the gelatinigation to the fibre, which benefits keeping clearness and uniformity of the printing. Therefore the printing is clear, vivid, high in the dyeing quantity and has good handle and firm degree at the same time.
The products of medium and low viscosity are suitable for the printing requirements of net, roll style and handwork printing. It has the flowing property of the pseudo plastic fluid, which means that it will turn watery when being cutted and restored the original viscidity after losing being cutted. This fits for fine printing, full ground printing and wet printing. It can make products with the features of thin line, clear profile and good uniformity.