Open AccessThe effect of top roll defects on dyh5000 toyoda hara finisher draw frame on sliver unevenness at pt xyz
Author(s) -
Wawan Ardi Subakdo
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/885/1/012042
Subject(s) - lapping , spinning , frame (networking) , engineering drawing , yarn , process (computing) , mechanical engineering , engineering , structural engineering , computer science , operating system
PT. XYZ is one of the spinning companies that produce cotton carded and Rayon yarn. One of the machines used in the yarn spinning process is the finisher draw frame. In the finisher draw frame process, slivers was produced. To maintain stability of the resulted sliver remain standard, it is necessary to check the sliver number (Ne1) and unevenness of the sliver (u%) with the uster uneveness tester tool. On the finisher draw frame, problems were often found, one of these was unevenness value (u%) that exceed the standard. The purpose of this study was to see the effect of top roll defects on unevenness (u%) and how to overcome these defects. After observing the sliver and testing it on the finisher draw frame, the slivers was tested using an uster unevenness tester 4. The results were not in accordance with company standards, which are 2.50% to 2.90%. The causes of the defect include: lapping material, use of equipment during lapping cleaning. To overcome the problem of defects, repairs were made by grinding the top roll or replacing it with a new top roll. After repairs or replaced with a non-defective top roll, the result is 2.82% and 2.88%