NOPR Collection:

Assessing the Weavability of Splicings

Thu, 01 Sep 1988 00:00:00 GMT

Title: Assessing the Weavability of Splicings Authors: Hari, P K; Aggarwal, S K; Subramanian, T A Abstract: An attempt has been made to evaluate the splicings for their performance in weaving. The process of splicing, particularly for low-quality yarns, not only reduces the yarn strength, elongation and abrasion resistance but also introduces into the yarn some very weak splicings, which, in turn, could be the source of warp breaks in weaving. Microscopic examination of such splicings revealed that they have an inherent deficiency in the structure itself which renders them to be weak. Page(s): 158-163

Reed Mark of Fabric and Its Relation with Warp Tension at Beat-up with Different Loom Settings

Thu, 01 Sep 1988 00:00:00 GMT

Title: Reed Mark of Fabric and Its Relation with Warp Tension at Beat-up with Different Loom Settings Authors: Neogi, S K; Bhattacharyya, P K Abstract: Reed mark of jute fabric with plain weave, expressed as reed mark percentage (RMP), has been studied with different loom parameters. Attempts have also been made to find out the relationships between RMP and (a) tension difference between two warp shed lines at beat-up and (b) seepage of the fabric. RMP at fell varies in the same manner as that at grey state of fabric with different loom settings and the relationship between them is linear with correlation coefficient of 0.96. RMP at grey state decreases with earlier shed timing, higher back rest position and change of leasing pattern of warp yarns from one-by-one to two-by-two. Beat-up tension difference varies inversely with RMP and the relationship between them is linear with correlation coefficients of - 0.91 and - 0.76 for different shed timings and back rest positions respectively. Seepage of the fabric is directly related with RMP with correlation coefficient of 0.64. Page(s): 151-157

Effect of Rheology on Melt-Spinning of Polymer Blends

Thu, 01 Sep 1988 00:00:00 GMT

Title: Effect of Rheology on Melt-Spinning of Polymer Blends Authors: Kale, D D; Bopardikar, N B Abstract: The rheology of blends of polypropylene and high-density polyethylene (HDPE) was measured at 185, 200 and 215^oC using Weissenberg cone and plate rheogoniometer. Fibres Were spun from these blends at 200^oC and the mechanical properties of these fibres were measured using Instron tensile strength meter. The addition of small amounts of HPPE to polypropylene improved the tenacity considerably. Page(s): 146-150

Length Distribution Pattern of Broken Parts of Cotton Fibre Generated during Fibre Separation in Rotor Spinning

Thu, 01 Sep 1988 00:00:00 GMT

Title: Length Distribution Pattern of Broken Parts of Cotton Fibre Generated during Fibre Separation in Rotor Spinning Authors: Chattopadhyay, R; Sinha, T K Abstract: The break points are not uniformly distributed along the length of the fibre but have a strong preference for the front portion. The length distribution pattern of the broken parts of fibres generated during fibre separation follows gamma distribution. Page(s): 143-145