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Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Published by Politeknik ATK Yogyakarta
ISSN : 14117703     EISSN : 27462625     DOI : https://doi.org/10.58533/bptkspk.v22i1
Core Subject : Art, Social, Engineering,
Arts Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Social Sciences
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit mencakup beberapa topik mengenai penyamakan kulit (enzim terapan, kimia terapan dan kimia lingkungan), produk samping kulit, teknologi karet, teknologi plastik, pengembangan mesin produksi, teknologi sepatu, dan pengembangan produk kulit yang diterbitkan oleh Politeknik ATK Yogyakarta, Indonesia. Jurnal ini juga mencakup penelitian-penelitian dari multidisiplin ilmu yang lain yang terkait dengan teknologi kulit, karet dan plastik.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 174 Documents
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PEMANFAATAN ZEOLIT UNTUK PENURUNAN COD DAN BOD LIMBAH PENGOLAHAN KULIT Cahya Widiyati
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 12 No 2 (2013): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Leather is one of the semi-finished products that contribute to the export of non-oil commodities. In general, leather processing wastewater containing germs, dirty-colored, foul- smelling and containing COD, BOD5 and suspended solids are high. One of the adsorbent which has a large adsorption capacity is the natural zeolite. Natural zeolite adsorption capability increases when first activated zeolite. Zeolites can reduce pollutants in the form of cations and anions in wastewater so it can reduce COD and BOD5 waste leather processing. The purpose of this study to determine the effect of HCl concentration of activating zeolites and zeolite-activated heavy influence for BOD5 and COD reduction. The method used is laboratory-scale experiments. Activation 150 grams zeolite - 40 + 60 mesh by heating 2500C and the addition of 0.1 N HCl acid, 0.15 N, 0.2 N and 0.25 N. Zeolites are separated and dried in an oven. Weight activated zeolite 5 grams, 10 grams, 15 grams and 20grams. Mixing zeolite and 100 cc leather processing waste electrical stirrer 150 rpm for 30 minutes and then separated sediment. The filtrate was tested in COD and BOD5 waste leather processing. Do also test COD and BOD 5 without zeolite. COD tests using a COD reactor and BOD5 tests using Winkler method. The results showed that the zeolites were activated by heating 2500 C, 0.15 N HCl and weight of 20 grams of activated zeolite an optimum condition to reduce COD and BOD5 BOD5 decreased 96.67% to the value of 105 mg / l and COD reduction reached 92.23% with a value of 335.36 mg /l. Zeolite results of this study can be used for leather industry because zeolites are widely available in Indonesia and can to reduce levels BOD5 and COD leather processing waste.
PEMANFAATAN MINYAK SISA LIMBAH PENGGORENGAN KRECEK MENJADI SABUN DAN LILIN DI IKM PANJI JAYA SEGOROYOSO BANTUL YOGYAKARTA Widia Susanti; RLM. Satrio Ari Wibowo
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 12 No 2 (2013): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Cooking oil is one of the basic ingredients needed by the Indonesian community, especially the Small and Medium Enterprises (SMEs) in the field of food. Cooking oil is usually used as a medium for frying food and flavor enhancer. A large number of cooking oil used by SMEs cause high amount of waste which prompts to various diseases. Therefore, this research attempts to use the waste cooking oil in order to prevent from environmental pollution by re- process it as raw material for making solid soap. This study was conducted from June 13, 2012 to July 20, 2012 at SME Panji Jaya, Segoroyoso, Pleret, Bantul, Yogyakarta and the material was tested in the Chemical Laboratory of Leather Technology Academy, Yogyakarta. The samples are waste cooking oil after used for frying krecek (buffalo skin cracker) for 2-3 times. Utilization of waste cooking oil was done with the purification process consisting of three phases; the removal of seasoning (despicing) in which then the waste cooking oil was filtered with filter paper, and then neutralized with 15% NaOH and bleached using activated carbon as much as 10% of the waste cooking oil used. The purified waste cooking oil was used as raw material for making solid soaps. Cooking oil that has been purified again decreased its FFA levels so that its quality improved. The test result of solid soap compared with SNI 06-3532-1994 shows that it has moisture content of 17.9%, the amount of free fatty acids 61.16%, alkali-free 0.52%, free fatty acids 0.74, lathering number 200, negative mineral oil 80, and pH = 6.
NEEDS ASSESSMENT DALAM RANGKA PROGRAM PEMBERDAYAAN UMKM KULIT DI DAERAH ISTIMEWA YOGYAKARTA Rofiatun Nafiah
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 12 No 2 (2013): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

This research tends to give an overview on needs assessment done by government institutions in order to determine the empowerment programs for leather Small and Medium enterprises (Leather-SMEs) in Yogyakarta. This research uses interview, questionnaires, direct observations and documentation techniques to gain the data; and employs descriptive method to analyze the data. Results of the research show that before designing the empowerment programs for leather SMEs, the institutions have not optimally done needs assessment, and even without any needs assessment at all. Furthermore, further research needs to be conducted in order to determine appropriate methods and steps in the implementation of needs assessment.
PROGRAM STUDI TEKNOLOGI PENGOLAHAN KULIT DI AKADEMI TEKNOLOGI KULIT Elis Nurbalia
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 12 No 2 (2013): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

This research aims to analyze students’ tendencies in choosing themes/titles for their final assignments in the Leather Technology Study Program from 2003 until 2012. Results of this study can be considered in the future in directing the students to carry out their final projects which are in line with the achievement of ALT vision. This research used descriptive qualitative approach with quantitative content analysis (content analysis qualitative /QCA) in analyzing the data. The results of this research showed that the distribution of students interested in completing final project through industrial internship program was 93.23%, through research was 0.52% and through the independent work was 6.25%. Based on the raw material types which are of interest, there are 3 out of 8 kinds of animals: cows 45.26 %, sheep 26.84% , and goats 22.11% , Based on leather articles, there are 3 out of 8: shoe upper leather 33.68% , glove 28.42%, and upholstery 11.58 %. Based on leather processing, there are 3 out of 11: retanning 27.60 %, finishing 23.44 %, and tanning 13.54 %. The researched concludes that Leather Tannery Technology Program Study students prefer to take internship program as final assignment continued with Inovation work program. Inovation work program must be developed by expanding the use of raw materials from the skin of small animals such as rabbit, snake, fish, etc. needs to be developed, and students’ creativity in leather processing and finishing should be increased
GRADING POLA PADA KASUS OVER SIZED ATASAN SEPATU DERBY BROGUE DI CV M JOINT EXCLUSIVE LEATHER CRAFT YOGYAKARTA Siti Qomariyah; Anwar Hidayat
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 18 No 1 (2019): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

The initial step of the shoe-making process begins with the design and pattern making. The main process in making patterns is also required grading sizes. Problems found in CV M Joint Exclusive Leather Craft is on the upper there was an oversize so that the decrease and increase in the upper is not balanced. The purpose of this final paper is to find out and solve the oversize problem in the upper. The method used was the experiment making grading patterns using CorelDRAW software. The results of the identification indicated that there were problems caused by technical errors used when grading shoe patterns. The efforts to prevent oversize of the unbalanced upper Brogue Derby shoes were by using the radialSharp triangle method, which was applied by using CorelDRAW software. The radial triangle method has been tested by making shoe samples, and this method can reduce the occurrence of over size in the upper
STUDI PADA PROSES PEMBUANGAN KAPUR (DELIMING) KULIT KAMBING MENGGUNAKAN GAS CO2 Prasetyo Hermawan; Alfani Risman Nugroho
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 18 No 1 (2019): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

This purpose of this research was to study the use of CO2 gas as an alternative material for deliming pelt of goat skin. In a glass reactor with a volume of 1 liter flowing with CO2 gas in varied flow, ie; 0, 10, 25 and 50 cc / minute. The float used is 200% based of the weight of the skin, then the data is taken from the liquid and the skin. The initial pH of lime water is 11.8 and after 30 minutes of CO2 gas flowing with a discharge of 25 cc/ min, the pH of lime water drops to 6.71 and after 60 minutes it became 6.39. Deliming liquid had an initial pH of 7.17 and a final pH without gas flow is 11.34, while the CO2 gas discharge was 25 cc/min the pH becomes 6.51. The TDS and conductivity of deliming liquid decreases when the CO2 gas discharge was raised, the final TDS at the CO2 gas discharge of 25 cc/min is 4354 ppm, while the final conductivity is 8798 µC/cm. The biggest compressibility of goat skin was in the flow of CO2 gas with a debit of 10 cc/minute, which was 16,71%. At the end of the deliming with CO2 gas discharged of 25 cc/min, the COD value increased by 47.1% to 3137 mg/l and the calcium content raised to 1.015%.
PENINGKATAN UJI FISIS KULIT DOMBA GOLF GLOVE PEARL WHITE DENGAN PENAMBAHAN KONSENTRASI PERAMIT LSW NEW PADA PROSES FATLIQUORING Diana Nur Kholida; R.L.M Satrio Ari Wibowo; Entien Darmawati
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 18 No 1 (2019): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

This study aims to explain the increase of physical test of golf glove pearl white sheepskin with the addition of the concentration of the Peramit LSW New. The research was conducted in February to April 2019 in the CV Sari Banteng Mulya. The material used was wet blue sheepskin with R quality of 5 pieces and shaving thickness 0,4-0,45 mm . The auxiliary materials used in the fatliquoring process were Pelastol ET, Pellan 802, Pellan L-90, Peramit LSW New, and Peramit MLN. The method used in the fatliquoring process was a short float. The result of the study obtained the concentration of Peramit LSW New of 2.5% in the fatliquoring process for improving the tear strength quality of golf glove pearl white sheepskin. Result of physical testing tensile strength, elongation, and tear strength was increased. Tensile strength test result from 174 Kg/cm2 to 286,5 Kg/cm2, elongation from 81,804% to 86,56%, and ter strength from 16,93 Kg/cm to 31,2 Kg/cm. Peramit LSW New can improve the t physical test quality of glove skin so that it can be used as a raw material for golf glove pearl white.
ALTERNATIF BAHAN DAN PERBAIKAN KODIFIKASI POLA SEPATU DI CV BAROKAH SURABAYA, JAWA TIMUR Ainu Rakhma Fatkhia; Rofiatun Nafiah
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 18 No 1 (2019): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

The stunted of shoe production in CV Barokah is identified in the shoe pattern section. The company has to make shoe pattern repeatedly because pattern materials are not durable. Uncompleted pattern codification also creates problems in shoe production. This research aims to give solutions for shoe pattern problems in the company with material improvement and pattern codification. The material observed is the process of making shoes, especially focusing on material and pattern codification. Data collection methods are observation and documentation. This research uses experiment method in order to solve the problem. The results of problem solving can be concluded that patterns made of cardboard, manila paper, cardboard, and texon are more easily damaged when compared to patterns made from mica. In addition, the complete codification must include the name of pattern, size, in/out sign, center sign, balance sign, elasticity, accessory sign, lodging sign, and amount of pattern. Completing shoe pattern codification also makes shoe production become more efficient.
EFEK PENINGKATAN TEMPERATUR PADA PENETRASI RETANNING AGENT KULIT CRUST SAPI ARTIKEL PURE LINING TERHADAP TEAR STRENGTH Ikah Aryani; Maria Sriwiyanti; Emiliana Anggriyani
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 18 No 1 (2019): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

This study aims to determine the effect of increasing temperature on penetration of the retanning agent against tear strength. The material used were blue wet lining cowhide (pure lining article), while the equipments used were scales, thickness, HUNI Drum, Cutter, Tank Drum, pH meter (mettlertoledo), Prodomix, Aquamix, Setting out, Staking Crust, Wet Stretcher, and Toggle Wet. The method used was changing the water temperature during washing after neutralization and water on the penetration of the post-tanning process. The water temperature when washing after neutralization and main water at the time of penetration used were 30oC for control, 20oC for the first treatment, and 35oC for the second treatment. The results obtained were significant differences (P<0.05) the value of tear strength in the three treatment results. In the temperature of 35oC for penetration of retanning agent against tear strength gave very optimal results when viewed from customer requirements compared to temperatures of 20oC and 30oC. The temperature of 20oC gave optimal results if it was laboratory compared to temperatures of 30oC and 35oC. The conclusion that can be drawn was that the increase in temperature at the penetration of retanning agent can increase the value of tear strength of pure lining articles
STUDI PENGARUH PENGGUNAAN BAHAN FIKSASI AL2(SO4)3 TERHADAP KULIT DOMBA YANG DISAMAK MENGGUNAKAN BAHAN PENYAMAK DARI TANAMAN GAMBIR (UNCARIA GAMBIER) Prasetyo Hermawan; Elis Nurbalia
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 18 No 1 (2019): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

The purpose of this research was to study of the use of Al2(SO4)3 as fixation agent in taning sheep skin using tanin derived from gambier plants (uncaria gambir). A total 18 pieces of sheep skin were used using Al2(SO4)3 which was varied, ie; 0%, ½%, 1%, 1,5% and 2%, as a control 0,5% H2C2O4 is used. The physical characteristics of the liquid and the leather product were then tested and the test results were compared with the standard lining skin (SNI 06-0237-1989). Addition of 0,5% Al2(SO4)3 reduced the final pH of the fixation liquid from 5.43 to 3.99. The increase in skin thickness at the addition of 0.5% Al2(SO4)3 was 4.14% and in the control test was 5.29%. Skin shrinkage temperature increased from 60,50 0C to 73,17 0C at the addition of 1% Al2(SO4)3. Tensile strength and elongation tended to decrease with the increase in the amount of Al2(SO4)3, but all the results of tensile strength met with SNI because it is above 75 kg/cm2. Tear strength and oil contains of skin tended to decrease with the increase in the addition of Al2(SO4)3. The degree of tanning and tannin content of the skin tended to rise, at the addition of 0.5% Al2(SO4)3 the skin had a degree of tanning 55.23% and a tannin content of 24.66%. SEM test results showed the surface morphology of the skin became even and denser.

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