Determining a combination of factors on rubber end manufacturing using taguchi method at PT. Agronesia Bandung

Rubber end is one of products that manufactured by PT. Agronesia Bandung. These products experienced defect and unconformity to the standard which is bubble trapped in rubber end products. This defect can be found from 3 factors – control factor, which are material thickness, temperature, and shift. Material thickness has 3 levels, which are 3 mm, 5.5 mm, and 7 mm; temperature has 3 levels, which are, 35° C - 40° C, 40° C - 45° C, and 45° C - 55° C; while shift has 3 levels, which are shift 1, shift 2, and shift 3. To solve the problem, Taguchi method is used to have the right combination of those 3 factors to produce rubber end. First step is selecting factors and determining level that will be a base for selecting orthogonal matrix, and then determining S/N ratio and analysis of variance. The result is factors combinations are material thickness at level 2 of 5.5 mm, temperature at level 3 of 45° C - 55° C, and shift at level 1 of shift I.