You might have seen taffeta fabric quality is defined with numbers that ends with T letter, like 190T, 240T, 250T. What does this ‘T’ letter means in the taffeta fabric? ‘T’ stands for number of yarns in one square inch fabric. This is sum of warp and weft yarns in one square inch fabric area.
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We can say that T=EPI+PPI. Where EPI is number of ends per inch and EPI is number of picks per inch. For an example, 240T taffeta is constructed of 120 ends and 120 picks (filling yarns) in one square inch.
Higher the number of T higher is the fabric density.
You might be wondering what is Taffeta. We have written a short note about Taffeta fabric in this post. Read that post to know about various use of Taffeta fabrics.
Also read: How to find EPI and PPI of woven fabric
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