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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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PERBEDAAN PROSENTASE MINYAK JARAK (Castor Oil) TERHADAP PENYERAPAN AIR DAN KELEMASAN KULIT KELINCI ZEEMLER Titik Anggraini; Tutik Maryati
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 1 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (865.886 KB) | DOI: 10.58533/bptkspk.v22i1.195

Abstract

This study aims to evaluate the flexibility and water absorption of the skin of oil -tanned rabbits / zeemler with different percentages of castor oil. A total of 9 pieces of rabbit skin were randomly divided into 3 treatments with 3 replications. The treatment given was the percentage of castor oil (15%), medium (20%) and high (25%). Variables observed included weakness and water absorption. The data collected was analyzed by analysis of variance followed by Duncan's New Multiple Range Test. The results showed that the suppleness of oil tanned leather with the percentage of 15% and 25% castor oil was higher (P>0.05) than the percentage of 20%. The percentage of 15% castor oil resulted in a higher water absorption than the percentages of 20% and 25%. It was concluded that the quality of the zeemler rabbit skin tanned with castor oil met the Indonesian National Standard No 06-1752-1990. The use of various castor oil had no effect on the results of the Zeemler skin moisture absorption and skin elasticity tests.
PENGARUH PENGGUNAAN HAND MIXER DAN OVERHEAD MIXER PADA UNJUK KERJA PENCAMPURAN DALAM PEMBUATAN KULIT SINTETIS Dewi Nurhidayati
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 1 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (853.639 KB) | DOI: 10.58533/bptkspk.v22i1.196

Abstract

Proses pencampuran merupakan proses yang penting dalam pembuatan suatu produk, salah satunya adalah pada proses pembuatan kulit sintetis. Proses pencampuran pada pembuatan kulit sintetis bertujuan untuk mencampurkan bahan baku yang berupa resin dengan baha n aditifnya seperti filler, stabilizer ,plasticizer dan lain lain. Proses pencampuran dilakukan menggunakan mixer. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan mixer yang memiliki spesifikasi berbeda. Adapun mixer yang digunakan adalah Hand Mixer Miyako SM-625 dengan Overhead Mixer IK RW 20.Kedua mixer ini memiliki perbedaan dari kecepatan dan tipe agitatornya. Dari hasil penelitian secara organoleptis kulit sintetis yang dihasilkan dari proses pencampuran menggunakan kedua mixer ini tidak ada perbedaan. Tetapi hasil uji fisis menunjukkan nilai kuat tarik, kemuluran dan kuat sobek lebih tinggi pada penggunaan Overhead sintetis tetapi untuk memperoleh hasil pengujian yang terukur penggunaan Overhead Mixer IK RW 20 lebih disarankan dilihat dari selisih masing -masing parameter uji fisisnya.Mixer IK RW 20. Hal ini menunjukkan bahwa kedua mixer dapat digunakan pada pembuatan kulit
SINTESIS KALIUM ALUMUNIUM SULFAT (ALUM) DARI LIMBAH ALUMUNIUM FOIL MENGGUNAKAN KOH DAN H2SO4 Atiqa Rahmawati
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 1 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (931.097 KB) | DOI: 10.58533/bptkspk.v22i1.197

Abstract

Meningkatnya industri kuliner tentu tidak lepas dari sampah kemasan yang ditimbulkan, salah satu sampah yang ditimbulkan yaitu sampah alumunium foil. di Jawa Timur menghasilkan sekitar 8 ton tiap bulan limbah alumunium foil. Limbah yang menunmpuk hanya diserahkan kepada pihak ketiga. Limbah alumunium foil dapat menyebabkan pencemaran lingkungan, dan membutuhkan waktu sekitar 400 tahun untuk mendegradasi alumuium foil dan terurai dalam tanah. Peningkatan polusi limbah yang muncu l, dibutuhkan alternatif untuk mengubah limbah menjadi material yang berguna. Kandungan alumunium yang tinggi pada alumunium foil dapat dimanfaatkan sebagai bahan baku pembuatan tawas kalium alumunium sulfat. Tujuan dari penelitian yang dilakukan yaitu pemanfaatan limbah alumnium menjadi tawas kalium alumunium sulfat. Kombinasi variabel yang digunakan yaitu konsentrasi KOH dan H 2SO4. Pada penelitian ini akan dihitung nilai rendemen, analisa pH, titik leleh, dan kandungan Al 2O3 pada tawas. Hasil penelitian menunjukkan rendemen optimum sebesar 88,3580 pada variabel KOH 2 M dan H2SO4 4,5M, dengan nilai pH 3,08, titik leleh 92 °C, dan kandungan Al2O3 sebesar 15,5%. Adapun analisa fisis yang dilakukan terhadap tawas kalium alumunium sulfat yaitu analisa pH, titik leleh, dan kandungan Al2O3. pH tawas yaitu berkisar pada pH 3, dan titik leleh pada range 92 – 93 °C. Sedangkan kandungan Al2O3 berkisar pada 9 – 11 %. Analisa fisis pH dan titik leleh telah memenuhi standar SNI 0032:2011 tentang tawas alumunium. Sedangkan kandungan Al2O3 belum memenuhi standar SNI 0032:2011.
UTILIZATION OF AROMATIC SULPHONES IN THE UPPER SHOES LEATHER TANNING PROCESS Sofwan Siddiq Abdullah; Kuntoro; Fadzkurisma Robbika; Thoyib Rohman Hakim
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 2 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Technology of leather tannery is influenced by laws and developments in technology, both domestically and internationally. Current research has a major focus on discovering new process technologies and materials that make the leather processing technology more optimal and environmentally friendly. Currently, most of the leather tanning processes in Indonesia still have normative stages, which consist of beam house operation, tanning, post-tanning (neutralization, retanning, dyeing, fatliquoring) and finishing stages. The purpose of this study is to alter the post-tanning procedure for upper shoes by using aromatic sulfones. By using aromatic sulfones, leather can be tanned without the requirement for neutralization. The results of this study are expected to educate tanneries and give them another choice for performing tanning techniques that are more efficient, more reasonably priced, and meet standards for the quality of finished leather. With the addition of aromatic sulfones, wet blue goat skin post-tanning can be finished in 225 minutes (3 hours 45 minutes), or roughly 21.43% of the typical processing time. This process modification can both speed up the tanning process and consume less water because no fresh water is needed during the post-tanning phase. Water savings in the post-tanning process can reach 400% of the total water used. With these advantages, it is believed that the tanning process for leather would become more effective and affordable. Furthermore, by using less water during the post-tanning process, liquid waste can also be decreased. In terms of organoleptics and mechanics, the rubbing resistance of post-tanning leather with with the addition of aromatic sulfones meets the requirements/standards for upper shoes.
OPTIMIZATION ADSORPTION OF HEXAVALEN CHROMIUM (CR-VI) IN ACTIVATED CARBON (MICROWAVE-ASSISTED ZNCL2 CHEMICAL-ACTIVATION) USING TAGUCHI METHOD Atiqa Rahmawati; Fadzkurisma Robbika; Yuafni
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 2 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

The issue of heavy metal pollution is a significant concern in the environmental. Hexavalent chromium (Cr(VI)) is hazardous heavy metal when it is discharged and expands within ecosystem. Cr(VI) is a hazardous compound that high susceptibility to oxidation and mutagenic. The tannery industry generates hexavalent chromium in its liquid waste. Managing Cr(VI) liquid waste could use the adsorption technique with activated carbon. In this study the activation of activated carbon using microwave-assisted ZnCl2 chemical activation. The activated carbon used for adsorbing the Cr(VI). The objective of this study was to ascertain the optimum parameters for the adsorption of Cr(VI) utilizing activated carbon. The optimization method is Taguchi, which incorporates three factors: A (pH), B (activated carbon dosage), and C (agitation). The result of optimization is pH 2; 0,4 g activated carbon dosage, and agitation 20 rpm, which the optimal response was 16.7498 mg/L. The analysis using the desirability obtained desirability value of 1. The ANOVA results indicate that the pH significant on the response. The adjusted R-square is 0.9667 and predicted R-square is 0.8668. It can be concluded that the model and actual conditions has slighly discrepancies. Then, the regression equation from the model can be estimate the actual value.
DISPERSING AGENTS WASTEWATER QUALITY FROM LATEX GLOVES MANUFACTURING BY TREATMENT USING Al2(SO4)3 AND PAC COAGULANT Wahyu Ratnaningsih; Cahya Widiyati
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 2 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Waste is a residual result of a process that cannot be reused. The rubber industry is one of the waste-producing industries that if not managed properly, will cause environmental pollution. One of the rubber industries is the latex glove industry, which uses raw materials in the form of latex and chemicals as dispersing agents. Dispersing agents that already expired cannot be reused, so they need to be processed before being discharged into the environment. One of the methods used for treating this wastewater is the coagulation-flocculation method. This research is aimed to conduct the treatment of dispersing agents wastewater from latex glove manufacturing by the coagulation-flocculation method using coagulants to reduce the level of turbidity and COD concentration. The concentrations of Al2(SO4)3 and PAC coagulants used were 1.33 g/L, 1.67 g/L, and 2 g/L, respectively, with rapid stirring at 120 rpm for 2 minutes. The flocculant concentration used was 0.33 g/L, with rapid stirring at 25 rpm for 15 minutes. The results showed that Al2(SO4)3 coagulant was better at reducing turbidity levels up to 97.86% and COD concentrations up to 90.24% in the dispersing agents wastewater. Based on this study, the recommended dose of Al2(SO4)3 coagulant is 1.67 g/L. At this dose, there was a decrease in turbidity levels from 816 NTU to 17.43 NTU and a decrease in COD levels from 328 mg/L to 32 mg/L.
THE EFFECT OF TYPE OF POLYURETHANE IN THE FINISHING PROCESS ON THE QUALITY OF CAR SEAT LEATHER Alfiyatul Masruroh; Elis Nurbalia; Entien Darmawati
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 2 (2023): 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 using bright binder polyurethane material in improving the shiny value in the finishing process of upholstery automotive article for car seat covers. The raw material used in finished dyed cowhide or finished leather with thockness of 1,2-1,4 mm with an area 5 sqft. The trial was carried out using 6 sheets of A4 size finish leather (21x29,7 cm) which would be re-fixed pe sheet with a different concentration of polyurethane for each trial. The method of improving the shiny value for upholstery automotive article is re-sprayed (re-fixative) with trial of variations in reducing matt polyurethane and variations is adding bright binder polyurethane to fixative (top coat) formulations, to get the shiny value according to the customer master sample standards, namely 1,1-1,2 GU. the measurement of the shiny value is carried out using a glossmeter. The result obtained are the addition of polyurethane bright binder 2% to get the best result to improve the shiny value of upholstery automotive for car seat covers. These results have met customer standars both form testing using a glossmeter and critical test carried out. The conclusion is that upholstery auutomotive leather has shiny value that meets the customer master sampel standards.
SLIP BEADING TECHNIQUE TREATMENT IN THE PROCESS OF MAKING OXFORD SHOES Abimanyu Yogadita R; Sanjaya Nugraha; Warsito
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 2 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Slip beading is an edge treatment that is commonly carried out by the sports shoe industry. Slip beading is a treatment on the edges that can add to the appearance of shoes to be more aesthetic. Slip beading is actually very good even though the work is difficult because the ribbon for the slip beading can use a different color from the color of the top of the shoe, but by being clever in choosing the color you will get shoes with a good appearance and contrasting color variations. Difficulties in the application of variations of slip beading arise due to the thickness of the material and it is only possible to do it with sophisticated equipment. Based on these problems, it is necessary to conduct research on the application of slip beading variations on shoes with classic models. The method used in this research is a qualitative method with an experimental method. That is trying to test with several samples of size variations in slip beading and several materials to find the best composition of size variations and material variations. The results of this study are the emergence of oxford shoe designs with variations of slip beading that match the material and width of the shoe components.
EFFECT OF FeCl3 COAGULAN DOSAGE ON DECREASING TURBIDITY OF LEATHER TANNERY WASTE PROCESSING Nanda Brilian Tantri; Swatika Juhana; Ragil Yuliatmo
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 2 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

The leather tanning industry is one of the industries that produces liquid waste. The liquid waste of the leather tanning industry contains pollutants with a high level of turbidity. This research was conducted to determine variations in the dose of FeCl3 as a coagulant to reduce the turbidity of leather tanning wastewater. The coagulant added was 5 mL of FeCl3 with various doses of 1%, 2%, 3%, 4% and 5%. The optimum dose of FeCl3 coagulant to treat 300 mL of liquid waste is 3% with a volume of 5 mL, which means that 500 mg/L or 500 ppm is needed. The results showed a decrease in turbidity at the optimum dose was 94%, a decrease in chromium content of 83,53%. This shows that the effect of FeCl3 on reducing total chromium content and turbidity gives quite good results.
REPAIR OF BURNT DEFECTS IN CGB (CORRECTED GRAIN BOX) ARTICLES THROUGH THE FINISHING PROCESS Mita Ristanti; Nurwantoro; Nais Pinta Adetya
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 22 No 2 (2023): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

The purpose of this study was to repair Corrected Grain Box (CGB) leather which had burnt defects through a finishing process so that the finished leather could meet SNI 0234:2009 standards. The material used is CGB finish cowhide leather with reject quality for 1 side with an area of ​​16.50 sqft and a thickness of 1.76 mm as raw material. The chemicals used are stucco, flesh side binder, compact binder, soft resin compact, copolymer binder, adhesion, filler, acrylic binder, pigment, lacquer, thinner, and silicon. The research process consists of two stages, namely the implementation of the finishing process and testing. The finishing process includes coarse buffing, stucco, fine buffing, spray backside or flesh side, ironing, roll coating 1 (base coat), spray lacquer solvent 1, emboss sandblast 1, roll coating 2 (medium coat), spray lacquer solvent 2, staking, embossing sandblast 2 and measuring. The finish results of the CGB skin obtained were skin which initially had a burned defect area of ​​82%, after repairs the area of ​​the defect was reduced to <10%. Organoleptic testing consisted of color evenness and nerf release, while physical tests, namely the rubbing resistance of wet and dry paint, were carried out and all the results met the SNI 0234:2009 standard.

Page 15 of 18 | Total Record : 174

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