COMPATATIVE STUDY OF PHYSICAL CHARACTERISTICS OF COTTON YARNS PRODUCED BY OPEN-END ROTOR SPINNING

Abstract

Open-end rotor spinning is a technology for creating yarn without using a spindle, it is also
known as rotor spinning. In this process the fiber sliver is separated into single fibers and in which
the separated fiber material is brought by an air stream to a collecting surface from which it is
drawn off while being twisted. It is a more recent method of yarn formation compared to Ring
Spinning, the production rate of rotor spinning is 6–8 times higher than that of ring spinning. The
yarn produced by the rotor spinning frame presents different features from the conventional ring
yarns. The mainly material used for Open-end rotor spinning are cotton fiber and polyester fiber.
The article presents the research results on physical characteristics of 3 types of 100% cotton yarns
Ne10/1, Ne16/1 and Ne20/1 produced by open-end spinning at Eight March Textile Company
Limited and Hoang Thi Loan company. The results indicate that the actual yarn’s count and yarn
count’s unevenness of Eight March Textile Company Limited is smaller than that of Hoang Thi Loan
company. Yarn twist of Eight March Textile Company Limited is smaller than that of Hoang Thi
Loan company. Thin places (-50%/km), thick places (+50%/km), neps (+200%/km) and hairiness
of Eight March Textile Company Limited is smaller than that of Hoang Thi Loan company.