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

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KAJIAN TEKNOLOGI IRADIASI BERKAS ELEKTRON PADA LIMBAH CAIR PRA PENYAMAKAN KULIT MENJADI PUPUK ORGANIK CAIR Cahya Widiyati; Herry Poernomo
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 16 No 1 (2017): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Technology study of electron beam irradiation on the liquid waste of pre tanning become liquid organic fertilizer has been done. Objective of this study is to obtain manufacture method of electron beam irradiation on the liquid waste of pre tanning become liquid organic fertilizer. Process of irradiation on the liquid waste of pre tanning is for detoxification of H2S, disinfection of bacteria pathogen, and decomposition of organic compound (protein) so that ratio of C/N less 30. Result of study shows that smaller air gap (tu) or distance of window to surface of liquid waste film of pre tanning above belt conveyor showing that production capacity of liquid waste after irradiation even greater. At process conditions: e-beam energy E = 0.3 MeV, e-beam current I = 20 mA, tu = 5 cm, and absorbed dose D = 100 kGy it is obtained production capacity of liquid waste after irradiation m = 543.8941 ton/year. At the same condition with E going up to 1.5 MeV, it is obtained that m = 2,886.2444 ton/year. Liquid waste of pre tanning from irradiation result contains macro nutrition that can be used as raw material on the manufacture of liquid organic fertilizer by method of aerobe fermentation using effective microorganism.
Pengaruh Mutu Proses Stockfit Terhadap Hasil Uji Bonding Bottom Sepatu Running dengan Metode Cementing di Perusahaan Sepatu Olah Raga Karawang-Jawa Barat Vivi Winda Sari; Diana Ross Arief; Cahya Widiyati
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

Quality control is conducted to minimize the reject of production. Quality of bottom is one of the important factors in making shoes. The bottom quality standards are determined based on the strength of glue adhesion between the components. The study was held at one of sport shoe companies from 13th March to 13th April 2017 with the purpose to reveal the quality control of the stockfit process to the test results of running shoes bonding bottom with cementing method. The stockfit process consists of few steps, for instance outsole buffing, outsole trimming, setting bottom, primering, cementing, attaching, pressing, press pong-pong, and cooling. Finished products were tested in the laboratory by random sampling. The quality control of running-shoe bottom stockfit process uses Plan-Do-Check-Action (PDCA) method in each process and is continued by analyzing the result of bonding test by adapting quality control tools. The result of the analysis shows the cause of failure of bonding or reject due to less perfect glue adhesiveness between midsole / outsole by 71,11%, midsole / midsole2 3,33%, midsole1,2 / gel outside 3,33%, midsole1,3 / gel heel back of 18.89%, and midsole/shank is 3.33%. Quality control at this company has been well implemented.
Co-Authors Diana Ross Arief Herry Poernomo Vivi Winda Sari