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Application of six sigma in improving the quality of recyclable polymer in collection centers

Abstract:

The research aims to apply Six Sigma to solve the quality problem of the collection center. It does not meet the final recycler's specification for 3% +/-0.15% impurities in the delivered post-consumer polymer bales. By applying the first two phases of DMAIC a Cp = 0.26 and Cpk = -4.9 was determined. After applying the last three phases, the improved indices are Cp = 1.8 and Cpk = 1.78. Therefore, it can be concluded that the post-consumer polymer collection center has an adequate and satisfactory process. With an average of 3% +/-0.022% so it meets the impurity specifications of the final recycler.