Search

This paper reported the process of extraction and characterization of the properties of natural fiber from the leaves of the Furcraea foetida plant. The water retting method was used to extract the fiber. The fiber properties obtained were used to analyze the ability of fiber to be spun into yarn for textile application. A bundle of Furcraea foetida fibers consist of many individual fibers. The longitudinal view of the fiber cells show up as long cylindrical tubes and the cross-section of fibers were an irregular, polygonal shape. The tensile strength of the Furcraea foetida fibers was 3 g/denier. The elongation at break of the Furcraea foetida fibers was 8.61%. The fineness of the Furcraea foetida fibers was 8.3 tex. The average fiber length was 70.8 cm. The Furcraea foetida fibers were hygroscopic fibers with 8.48% moisture regain. The coefficient of friction of the Furcraea Foetida fibers was 0.053. The properties of the fiber showed that the Furcraea foetida fiber has potential to be spun into yarn. Natural fibers from the leaves of the Furcraea foetida plant could be used as an alternative material for textile application. [ABSTRACT FROM AUTHOR]

Disposal of large volumes of textile waste is an escalating problem for textile industries. Sisal spinning industry is the one of the textile industries releasing large volumes of textile waste in the landfills. The rising costs, and reduction of available space together with increasing stringent environmental measures are making burying and land filling of textile waste, a declining option. This study therefore explores recycling options where the potential of using sisal fiber waste produced during sisal spinning processes as raw materials for the production of paper pulp was investigated. Sampling was done at 21stCentury Holdings Limited allocated at Chang'ombe industrial street Dar es Salaam mainly dealer of sisal yarns production. Materials were prepared and cut into small pieces of about ½ inches to reduce the fiber into unit lengths so as to achieve pulping required performance. Pulping process was achieved through Soda pulping techniques with two different effective alkali charges (EA-20% and EA-24%) for 240 minutes under maximum temperature 140°C, and liquor to fiber ratio 4:1by using Mathis Labomat dyeing Machine. The kappa number obtained was (25.5, 34.5) for material treated under EA 24% and EA 20% respectively, Percentage pulp yield were (47.1, 54.4) for EA 24% and EA20% pulp respectively. Freeness (630CFS, 555CSF) after refining at 4500 rpm. Finally, the resulting pulp was used for hand sheet making and the sheets were tested for their mechanical properties; Grammage (61.1, 61.1) g/m2, Tensile index (9.9, 22.3) Nm/g, Tear index (13.3, 17.4) Nm2/g, burst index (1.7, 3.7 and 1.6) kPa.m2/g and Elongation at break (2.02, 2.22) % for EA24% pulp, EA20% pulp respectively. The findings shows that sisal fiber wastes have a promising potential for paper pulp production compared to other non-wood raw material. [ABSTRACT FROM AUTHOR]

Yarn quality influences both fabric production processes efficiency and export market. One method used to gauge competitiveness of an industry is to study its product quality. The aim of this research work is to evaluate the quality of Ethiopian textile spinning mills' 100% cotton carded ring spun yarns in terms of its evenness (coefficient of mass variation, CVm), imperfections (thick and thin places, neps), and tensile properties with USTER Statistics 2018. Five spinning mills (B3, A0, A2, A4, and K3) of 15N, 20Ne, 25Ne, 30Ne, 35Ne, and 40Ne nominal yarn counts have been selected for the study. The yarn evenness and imperfections were measured using USTER tester 5 and tensile using a STATIMAT tester. The USTER statistical results showed 20.3Ne (mill B3), 32Ne (mill A4), and 36.2Ne (mill A2) had better overall quality, respectively. It was observed that most selected spinning mills had low evenness, imperfections, yarn strength, and good yarn elongation. Tensile properties of A2 (32.85Ne and 36.2Ne) had fallen under 5% USTER statistics percentile which indicates excellent yarn strength. Generally, from studied mills, it was seen that 61.5% of cotton yarn CVm and thin places falls at above 95% and 15% of yarn tenacity falls at ≤5% of Uster statistical percentile. [ABSTRACT FROM AUTHOR]

This study focuses on the impacts of the draft on the characteristics of MVS produced CVC blended yarn. The output of a finisher drawn sliver with a linear density of 3.54 ktex was converted into yarns of 18.45 tex (32 s/1 Ne) with the help of two separate delivery speeds: 350 and 410 m/min when possessing all constant spinning parameters. The properties of the yarn such as yarn anomaly, imperfections, tensile behaviour, and hairiness were investigated. The significance of independent variables and their relations with the physico- mechanical characteristics of CVC yarn was examined using two-way ANOVA at a 95% level of confidence. [ABSTRACT FROM AUTHOR]

This paper presents the results of Open End (OE) yarn tension investigation using a yarnguide funnel with an elastic element. Obtained were the dependencies of tension change on such factors as body mass, elastic element rigidity, yarn coordinates on the funnel surface, and the speed of yarn moving. The values of these factors cause fluctuations in yarn tension and, consequently, in yarn structure and characteristics. On the basis of experiments, it was shown that due to using of a yarn-guide funnel with an elastic element, a decrease in yarn unevenness is achieved. It is easily regulated by the funnel mass, the rigidity rate of the elastic element, and the spinning speed. [ABSTRACT FROM AUTHOR]