IMPROVING DUST CLEANING SYSTEM TO DECREASE DUST LEVEL IN THE AIR AT THE SPINNING WORK CENTER IN PT KUSUMAPUTRA SANTOSA

FIRMANSYAH, ARDIAN (2014) IMPROVING DUST CLEANING SYSTEM TO DECREASE DUST LEVEL IN THE AIR AT THE SPINNING WORK CENTER IN PT KUSUMAPUTRA SANTOSA. S1 thesis, UAJY.

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Abstract

Clean air is one of the key factors needed by yarn companies. This factor influences the quality of yarn, clean air helps produce good quality of yarn. On the other hand, recently many of yarn companies do not consider that factor as important and that can cause several problems. This research is conducted at a yarn company named PT Kusumaputra Santosa located at Jl. Raya Jaten Km 9, Karanganyar. The air around ring frame machine is dusty and that causes the surfaces of yarn produced by this machine defected (not aligned). The defect product must be cut at the finishing work center; this prolongs production processes, creating a bottleneck at this work center. Finally the main problem is that the real production does not reach the production target (late of production) that causes profit loss. The root problem is the dust cleaner machine cannot absorb dust optimally, because lack of hole at exhaust arm. Based on those problems, this research tries to propose a design improvement of dust cleaner machine by adding 10 exhaust holes at exhaust arm, to maximize the ability of absorbing dust in the air, in order to help PT. Kusumaputra Santosa clean the air condition in the spinning work center. The research employs Rational Method developed by Cross, 1994, to appropriate the design of dust cleaner machine. The research also employs Gravimetric Method to measure the level of dust in the air. There are literature reviews about the product design and improvement methods to help make a good design. Finally, with the design improvement, the dust cleaner machine can reduce the dust level in the air from 0.91 mg/m3 to 0.52 mg/m3, so there will be decreasing the defect product, reduce the number cut and join done by winding machine from 10.3/spindle to 7.8/spindle, fast production process, no bottleneck, so that the production rate is increase from 0.38 bale/day to 0.447 bale/day for yarn type 32CD, and then increase from 0.25 bale/day to 0.3 bale/day for yarn type 30 CD.

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