To determine redox in dyed sample. Oil spot. Table 1. For 2/2 Twill in one repeat of 4 threads there will be 4 threads and 2 intersections. Fabric shade%. EPI and PPI affects the compactness of the fabric. Balanced constriction. Thread counts range from as low as 20 threads per inch as used in tobacco cloth to as high as 350 threads per inch, found in type writer ribbon fabrics. Also as a rule please remember that 40s count yarn diameter is 1/165 of an inch. Properties of denim Jeans Before Wash After Wash KMnO 4 Conc. It is further noted that due to different duration of washing EPI, PPI was little changed. In woven fabric EPI and PPI is estimated to the quantity of yarn on a fabric. Instrument used for sample testing: ***Matrohm machine: Testing the indigo in the sample g/l. The purpose of our study was to investigate the effect of air temperature and humidity on the air permeability (air flow) of 6 fabric made of cotton, polyester a and polypropylen. Strength test etc. Normally EPI and PPI of a fabric are described as EPI×PPI. The General formula to calculate Maximum EPI and PPI for a Given count of Warp and Weft. Now in a plain weave in a repeat there are 2 threads and 2 intersections. Comparison of Color Depth Graphical comparison of color depth Figure 9. EPI & PPI calculation: EPI and PPI are the exceptionally normal word in the textile business. EPI and PPI. Cloth weight in GSM = {EPI/Warp Cout)+(PPI/Weft count)}* 25.6; oz (ounce ) per sq. meter)/34 . 3.5. Due to relaxation shrinkage, PPI (picks per inch) and EPI (ends per inch) was increased than untreated denim garments. 1.5g/l Time 1.5 min To measure pH ; Conclusion: Finally with the help of this topic we learned about the denim fabric production process. Being an merchant and sourcing professional, if you don’t know how to find Change in physical and mechanical properties of denim jeans with variation of processing time and concentration of potassium permanganate. Thus a fabric of 74×66 means 74 EPI×66 PPI. It was revealed that enzyme washing has a little effect in EPI and PPI of woven denim apparel. yard = GSM(Grams per sq. It is also known as thread count or cloth count. Material Measurement To calculate the length of any rolled fabrics, this formula gives the nearest accuracy. Regularly, EPI is the quantity of wrap yarns per inch of fabric and PPI is the quantity of weft yarns of per inch of fabric. Bar charts of color depth.

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