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We know that, for cotton printing many processes is used. Here I am describing the one Rotary-screen printing. Rotary-screen printing machines make use of the same principle described earlier, but as a substitute of flat screens, the color is transfer to the fabric through frivolous metal foil screens, which are made in the form of cylinder rollers. The fabric move along in continuous mode under a set of cylinder screens while at each position the print paste is automatically feed to the inside of the screen from a tank and is then pressed through onto the fabric. A separate cylinder roller is required for each color in the design. A conventional paste feeding system for rotary-screen printing machines is represented in Figure suction pipe leads from the paste vat to a pump, from where a printing hose leads to the squeegee (dye pipe with squeegee). From here the paste is directed inside the cylinder roller. Rotary-screen printing machines are equipped with both gluing and washin...

The word cotton is derived from Arabic language, depending upon the Arabic dialect, it is pronounced as ‘kutan’, ‘Qutn’, ‘Qqutun’. Nomenclature: As the cotton fiber is obtained from the plant, it is classified as a natural, cellulose, seed, and mono cellular, staple fiber. Cotton is a soft, staple that grown in a form known as a boll around the seeds of the cotton plant, a shrub native to tropical and subtropical regions around the world, including the Americas, India and Africa. The fiber most often is spun into yarn or thread and used to make a soft, breathable textile, which is the most widely, used natural-fiber cloth in clothing today. As of 2007, the ten largest producers of cotton in the world are, 1. PRC, 2. India, 3. the United State, 4. Pakistan, 5. Brail, 6. Uzbekistan, 7. Greece, 9. Turkmenistan and 10. Syria. The five leading exportes of cotton in 2009 are 1. The United States, 2. India,  3. Uuzbekistan/C15, 4. Brazil...

AM Cotton: When cotton is treated with 2-amino ethyl sulphuric acid in NaOH, AM cotton is produced without changing its structure. Dyed AM cotton has better resistance to light and washing. Carboxymethylated (CM) cotton): Cotton treated with manochloro acetic acid and then NaOH is converted into CM cotton. There are two types of CM cotton and can accept crease resisting treatments with greater effect. The second form of CM cotton can be produced easily in mercerizing equipment at very low cost. The product can be crease proofed with particularly good effect. Cayanoethylated (CN) Cotton: Treatment of cotton with acrylonitrile yields chemically modified cotton described as cayanoethylated (CN) cotton. Though this looks and feel like ordinary cotton and many of its properties are similar to that type of cotton, but CN cotton has extremely good resistance to rotting influences. it has better resistance to the effect of heat than...