本研究針對製鞋業在拉力不良的問題上,以愛迪達最大的代工廠-清祿鞋業為對象,進行拉力改善之研究,首先對該廠之品管課與成型課之幹部發出問卷以找出可能對拉力有影響之關鍵因子,並以六標準差的DMAIC做為改善之步驟。 在改善過程中,先以田口方法找出關鍵因子的區域最佳解,其後再以反應曲面法進行更進一步的製程參數微調,並得出生產最佳參數。 油性膠部分為:畫線壓力2.5 kg、藥水時間使用時間一小時、膠水使用時間一小時、前邦掃刀溫度50 ℃、貼底時間120秒、靜置時間7.5分、藥水烘箱面溫57.5 ℃、水壓壓力9 kg、水壓時間5秒、牆壓壓力37.5 kg、牆壓時間13.5秒、藥水烘箱底溫62.5 ℃、膠水烘箱面溫55 ℃、膠水烘箱底溫65 ℃,做為生產水準之設定。 而水性膠部分為:畫線壓力2.5 kg、藥水時間使用時間一小時、膠水使用時間一小時、前邦掃刀溫度50 ℃、貼底時間120秒、靜置時間7.5分、藥水烘箱面溫67.5 ℃、水壓壓力9 kg、水壓時間9秒、牆壓壓力37.5 kg、牆壓時間13.5秒、藥水烘箱底溫62.5 ℃、膠水烘箱面溫55 ℃、膠水烘箱底溫65 ℃,做為生產水準之設定。以該設定進行生產測試,結果該廠之生產水準改善了1.3個標準差,為4.5個標準差。
The purpose of this study is tried to improve the inequality loads between instep and sole. We chose Ching-lhu, the biggest ODM factory of adidas as our case study. At first, we sent questionnaires to the cadres of quality control department and producing department and got the potential critical factors through the questionnaires. We used DMAIC of Six sigma as the study steps. In the improvement section, we found the better loads through the Taguchi method and then used Response surface mythology to adjust the findings of Taguchi method to get the best loads. For WB: The best loads are: presing of marking(2.5 kg), using time of prime(1 hr), using time of cement(1 hr), toe last sword tempareture(50 ℃), sole attaching time(120 sec), deposited time(7.5 min), prime oven’s upper tempareture(57.5 ℃), presure of water pressing(9 kg), time of water pressing(5 sec), presure of sole attaching(37.5 kg), time of sole attaching(13.5 sec), prime oven’s bottom tempareture(62.5 ℃), cement oven’s upper tempareture(55 ℃), cement oven’s bottom tempareture(65 ℃). For TFA: The best loads are: presing of marking(2.5 kg), using time of prime(1 hr), using time of cement(1 hr), toe last sword tempareture(50 ℃), sole attaching time(120 sec), deposited time(7.5 min), prime oven’s upper tempareture(67.5 ℃), presure of water pressing(9 kg), time of water pressing(6 sec), presure of sole attaching(37.5 kg), time of sole attaching(13.5 sec), prime oven’s bottom tempareture(62.5 ℃), cement oven’s upper tempareture(55 ℃), cement oven’s bottom tempareture(65 ℃). Producing through the loads above, the sigma level of the factory is improved from 3.2 sigma to 4.5 sigma.