The results of analysis and discussion show that the proper choice of opening roller speed and its reasonable match with the yarn count is significant for ensuring the spinning quality index as well as reducing unevenness,thin and thick places of the yarn.
The paper elaborates the relations with a vast amount of testing datas between twisting efficience and some parameters in rotor spinning,i. e,rotor speed,yarn count,design twist multiplier,curvature radius of navel and blending ratio of polyester & cotton,provides basis for grasping the twisting efficiency of rotor spinning and improving the quality of OE yarn.
The article introduces alpaca and its fiber, and designs the proper yarn count and relative fabrics to meet the demands of markets according to the fact that the fiber of Alpaca is thicker than Merino wool, and has excerlent spinnability and unique performance of the fabric made of it.
Introduces the technology of raw material,yarn count,twist,as well as technological process of worsted cashmere sweater. Analyzes the critical factor which influences the production and quality and the measures of resolving.
The production of fancy fabrics for T-shirt on model 4TD four tracks and UP372 mini-jacquard double knitting machines introduced from abroad is described in terms of the features of several pattern designs , materials used, yarn count's selection and knitting technologies.
By static and dynamic experiments,the effects of sirospun twist,strand spacing and yarn count on the twist of single strand and spinning geometry in sirospun“V” region are studied,and the trapped twist of single yarn is also measured.
The relationship between the ratio of material blending, yarn count and single fibre strength CV value, the influence of combing key parts such as combing roller,rotor of rotor spinning machine on strand strength CV value are discussed.
The design methods of specification parameters of slub count, slub space and slub length were analyzed. Actual yarn count, speed of front roller, twist of slubby yarn and output were calculated and designed.