CVC= chief value of Cotton.
PC = Polyester Cotton /TC= Tetron Cotton
যেই কাপড়ে বা সুতায় শতকরা ৫০% এর বেশি Cotton থাকবে তাকে CVC সুতা/ কাপড় বলে, যেমন একটি উদাহরণ 60% COTTON, 40% polyester
আবারএকই ভাবে যেই কাপড়ে বা সুতায় শতকরা ৫০% এর বেশি Polyester থাকবে তাকে PC/TC সুতা/ কাপড় বলে, যেমন একটি উদাহরণ 80% Polyester, 20% Cotton.
50% এর বেশির উপর নির্ভর করবে এটা CVC হবে নাকি PC/TC হবে।polyester or Tetron একই জিনিস, Tetron হচ্ছে polyester এর জাপানিজ নাম.
CVC OR PC (P/C) OR TC KNIT FABRIC (BLENDED KNIT FABRICS)
Let’s define the terms first. CVC= Cheap Value Cotton (here usually percentage of cotton is more, 65%/35%=poly/cotton); PC= Polyester (poly) Cotton (here usually percentage of polyester is more, 80%/20%= polyester/ cotton); and TC is another name of PC, TC= Tetron (another name of originally Japanese name of polyester) Cotton. All these are blended fabrics.
Thus a poly-cotton blend is just what its name suggests: a fabric that is made up of cotton and polyester fibers. The ratio varies, with 65% cotton and 35% polyester being the most common. 50/50 blends (called poly cotton blended fabric) are also easily found. The blend is designed to afford the advantages of both the cotton and polyester fibers into one fabric. In most cases, price of this kind of yarn is less (a little cheap). Dyeing of poly cotton blend is a complex one. Commercially polyester/cotton blended fabrics are dyed by two-bath (two-part dyeing) or one-bath two-step dyeing (one-part dyeing) method employing suitable dyes and chemicals for each fiber. Naturally two part dyed fabric is more expensive. And in some cases, one part dyeing brings a melange effect (without viscose yarn).
In textile industry polyester/ cotton (P/C) bends have dominant market share. These blends are famous due to their aesthetic value and user- friendly performance. Limitations of both fibers are balance adequately by blending these two fibers making perfect blend. However, the P/C blends posses some challenges to dyer as polyester shows a hydrophobic character while cotton shows a hydrophilic character making it inevitable to dye with chemically different class of dyes. The conventional method of exhaust dyeing for P/C blends is to dye each component separately under its optimum conditions, i.e in a two bath process. To address the issue of productivity and raising environmental concerns, several attempts have been made in the past to shorten this to one-bath process. I wish to discuss the poly cotton dyeing techniques in detail later.
It wouldn’t be irrelevant to talk about 100% cotton fabrics. What are the advantages and disadvantages of cotton? 100% cotton is a fully breathable fabric, which means that it can be cooler to wear in hot conditions. However, as the thickness increases, the breathability decreases. 100% cotton tends to rip and wear out easily, depending on the knit (or weave).
writer: Anwer Hossain Sumon
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