IS 7703 : Part 5 : 1987 Methods of Test for Continuous Filament Polyester and Polyamide Flat Yarn - Part 5 : Unevenness Percentage

1 Scope

1.1 This standard (Part 5) prescribes a method of test for determination ofshort-term variations in mass per unit length (unevenness percentage) ofcontinuous filament polyster and polyamide flat yarn.

1.2 This method covers the indirect measurement of unevenness of the flatyarn by means of continuous runs on a suitable Uster unevenness testinginstrument. The direct procedure for measuring unevenness by cutting andweighing short lengths of a flat yarn is not covered by this standard.

1.3 Low twist filament yarns should be tested after the yarn is pretwistedwhile testing.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 6359 :1971Method for conditioning of textiles

IS 7703 : Part 4 :1981 Methods of test for continuous filamentpolyester and polyamide flat yarn :Part 4 Sampling