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All Journal Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Muhamad Raka Mahendra
Politeknik ATK Yogyakarta
Arts Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Social Sciences

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PENGARUH SETTING SUHU DAN WAKTU PADA MESIN INJECTION MOLDING TYPE HONGJIA TERHADAP HASIL OUTPUT OUTSOLE SEPATU FASHION ARTIKEL CHANCAY DI PERUSAHAAN SEPATU FASHION DI PASURUAN Muhamad Raka Mahendra; Suharyanto Suharyanto; Diana Ross Arief
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 16 No 2 (2017): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

The aim of the study is to know the process of making outsole with injection molding machine along with the problems and solutions by observation, interview, and internship program in the company. The material used is thermoplastic rubber (TPR) with hardness 70-75. The method used is injection molding. The process of outsole production begins with machine preparation, and is followed by material preparation, injection process, checking, finishing, packing and delivery. The result shows that Chancay finished goods were tested manually with the organoleptic and physical methods in accordance with the provision of the buyers. Percentage of the outsole rejects is amounted up to 7,57 % from the results of the production; i.e short shoot and sponge. Problem solving proposed is to adjust the machine settings on optimal conditions with the temperature of the nozzle 175°C. of barrel zone I 175°C, of zone II 170°C, and of zone III 165°C. An optimal cooling time is four seconds and optimal injection time is eight seconds, in which trial was conducted and obtained improvement of outsole quality and reject product reduction as much as 4.9 %. In conclusion the outsole should be produced by both appropriate and controlled machine setting parameters in accordance with the on-time availability of materials in the injection molding process.
Co-Authors Diana Ross Arief Suharyanto Suharyanto