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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/10.58533/8esa3597
Core Subject :
Berkala Penelitian Teknologi Kulit, Sepatu dan produk Kulit is a peer-reviewed, open-access journal that publishes original research articles, review articles, as well as short communication in all areas of basic and applied chemistry. Berkala Penelitian Teknologi Kulit, Sepatu dan produk Kulit covers the following topics. Arts Chemical Engineering, Chemistry and Bioengineering Engineering Industrial and Manufacturing Engineering Social Science The submitted manuscript should have relevance with Arts, Chemical Engineering, Chemistry and Bioengineering, Industrial and Manufacturing Engineering, and Social Science.
Arjuna Subject : -
Articles 85 Documents
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IDENTIFICATION OF HALAL CRITICAL CONTROL POINTS IN THE LEATHER TANNING PROCESS FOR HALAL LEATHER MATERIAL PRODUCTION Dian Nur Amalia; Swatika Juhana
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol. 25 No. 1 (2026): Berkala Penelitian Kulit, Sepatu, dan Produk Kulit
Publisher : Politek ATK Yogyakarta Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58533/3k5zpy95

Abstract

The expansion of the halal concept beyond the food and beverage sector has increased attention toward halal compliance in non-edible industries, including leather manufacturing. Leather processing involves multiple stages, namely beamhouse operations, tanning, post-tanning, and finishing, all of which must comply with the Halal Product Assurance System (SJPH). Within this framework, halal assurance encompasses not only the final product but also raw materials, processing aids, production facilities, storage, distribution, and documentation systems. This study aims to systematically identify halal critical control points throughout the leather tanning process based on the SJPH framework. A qualitative approach was employed through field observations at the Leather Processing Technology Department of Politeknik ATK Yogyakarta and an extensive literature review. The results indicate that critical halal risks primarily arise from the origin and death status of animals at the raw material stage, the use of chemical auxiliaries during beamhouse to finishing processes, and the potential for cross-contamination within production facilities and waste management systems. High-risk inputs include enzymes, surfactants, retanning agents, fatliquors, and finishing materials potentially derived from non-halal sources. These findings underscore the necessity of an integrated, documented, and consistently implemented SJPH to ensure halal integrity across the leather production chain.
EVALUASI MUTU FISIK DAN KIMIA KULIT BOX SAMAK KROM SEBAGAI BAHAN UPPER SEPATU BERDASARKAN ISO 20942:2019 Himawan Santoso; Wahyu Fajar Winata
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol. 25 No. 1 (2026): Berkala Penelitian Kulit, Sepatu, dan Produk Kulit
Publisher : Politek ATK Yogyakarta Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58533/tq2jj348

Abstract

Chrome-tanned box leather is one of the primary materials used for shoe uppers due to its excellent strength, flexibility, and durability. The quality of upper leather is determined by its physical and chemical characteristics, which must comply with established standards to ensure the production of high-quality footwear. This study aimed to evaluate the physical and chemical quality of chrome-tanned box leather based on the requirements of ISO 20942:2019 as the reference standard for shoe upper leather. The physical parameters evaluated included leather thickness, leather area, and defect percentage, while the chemical parameters comprised moisture content, ash content, fat content, chromium oxide (Cr₂O₃) content, pH value, and ΔpH. All tests were conducted according to the relevant ISO standard methods, including ISO 2589, ISO 4045, ISO 4047, ISO 4048, ISO 4684, and ISO 5398. The data were analyzed descriptively by comparing the test results with the requirements specified in ISO 20942:2019 and supported by findings from previous studies. The results showed that the chrome-tanned box leather had a thickness of 1.58 mm, a leather area of 17 ft², a defect percentage of 15%, a moisture content of 15.00%, an ash content of 5.18%, a fat content of 5.16%, a chromium oxide (Cr₂O₃) content of 3.09%, a pH ranging from 3.90 to 4.05, and a ΔpH value of 0.13. All evaluated parameters complied with the quality requirements specified in ISO 20942:2019, indicating that the tested chrome-tanned box leather is suitable for use as shoe upper material. The findings provide valuable information regarding the conformity of chrome-tanned box leather quality with international standards and may serve as a reference for quality control practices in the leather tanning industry. In addition, the physical and chemical characteristics of the evaluated leather indicate its potential to support ergonomic aspects of footwear products through improved material flexibility, user comfort, chemical safety, and manufacturing efficiency.
PEMANFAATAN LIMBAH SHAVING DAN BUFFING KULIT SAMAK KROM SEBAGAI BAHAN BAKU GANTUNGAN KUNCI MENGGUNAKAN PEREKAT POLIURETAN Himawan Santoso; Wahyu Fajar Winata
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol. 25 No. 1 (2026): Berkala Penelitian Kulit, Sepatu, dan Produk Kulit
Publisher : Politek ATK Yogyakarta Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58533/fd38aa61

Abstract

The leather tanning industry generates solid waste, such as shaving and buffing waste, which may cause environmental problems if not properly utilized. One approach to increasing the value of this waste is to convert it into handicraft products with economic value. This study aimed to utilize chrome-tanned leather shaving and buffing waste as raw materials for keychain production using polyurethane adhesive through the pulp slurry method. Shaving and buffing waste were mixed at a ratio of 1:1, followed by the addition of polyurethane adhesive and Fox Glue in two formulations (1:3 and 3:1). The mixture was processed into a pulp slurry, molded, dried, and subsequently subjected to a plating process at 80°C for 1.5 seconds under a pressure of 3 MPa before being engraved into keychain products. The results demonstrated that the leather waste could be formed into compact sheets with a smoother surface after the plating process. The resulting material was successfully applied as a keychain, thereby adding value to leather tanning waste. The developed product also has the potential to support ergonomic product design through its lightweight characteristics, ease of handling, and efficient manufacturing process, although ergonomic performance was not directly evaluated in this study. The utilization of shaving and buffing waste has the potential to support the implementation of cleaner production and circular economy principles by reducing solid waste generation while creating value-added products.
Nano-fatliquoring agent berbasis minyak sawit untuk industri penyamakan kulit: Review Study Atiqa Rahmawati; Heru Budi Susanto; Fadzkurisma Robbika; Baskoro Ajie; Erlita Pramitaningrum
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol. 25 No. 1 (2026): Berkala Penelitian Kulit, Sepatu, dan Produk Kulit
Publisher : Politek ATK Yogyakarta Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58533/g0gr5w98

Abstract

The leather tanning industry is currently transforming toward sustainability through the application of nanotechnology. The fatliquoring process is a crucial stage for providing softness and mechanical strength to leather. Palm oil has great potential as a raw material for fatliquoring agents due to its abundant availability and favorable fatty acid composition. This review discusses the development of palm oil-based nano-fatliquoring agents, which covers fabrication techniques via chemical modifications (such as the use of organosilicon), sonochemical (ultrasonic) physical methods, and the stability of Pickering emulsions. Characterization is emphasized on the analysis of droplet size, zeta potential, and leather fiber morphology using SEM/TEM. The advantage of nanotechnology lies in the deeper penetration of droplets into collagen fibers, which not only enhances mechanical properties but also provides additional functions such as UV resistance and antimicrobial activity. Overall, the utilization of palm oil by-products like deodorizer distillate (DD) in a nano-emulsion offers strong future viability for cleaner production in the global leather industry.
DEVELOPMENT OF STANDARD OPERATING PROCEDURES FOR WALKING FOOT SEWING MACHINE NEEDLE REPLACEMENT BASED ON THE DECLINE OF STITCH QUALITY IN LEATHER PRODUCT MANUFACTURING AT SMALL AND MEDIUM INDUSTRY Wawan Budi Setyawan
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol. 25 No. 1 (2026): Berkala Penelitian Kulit, Sepatu, dan Produk Kulit
Publisher : Politek ATK Yogyakarta Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58533/5tz5ef08

Abstract

Leather product manufacturing in Small and Medium Enterprises (SMEs) still relies heavily on operator experience in determining the replacement interval of sewing machine needles. Most SMEs replace needles only after breakage or when severe stitch defects appear, resulting in increased defective products, lower productivity, and higher production costs. This study aims to develop a Standard Operating Procedure (SOP) for preventive needle replacement on walking foot sewing machines based on stitch quality degradation. The research employed an experimental approach using a walking foot industrial sewing machine to sew cow leather with bonded nylon thread under simulated production conditions. Needle operating time was varied at 0, 8, 16, 24, and 32 hours. Stitch quality was evaluated through stitch deviation, skipped stitches, thread breakage, seam strength, and product defect rate. The simulated findings indicate that stitch quality gradually deteriorated as needle operating time increased. Significant degradation occurred after 16 operating hours, characterized by increasing skipped stitches and decreasing seam strength. Based on these findings, an SOP recommending preventive needle replacement every 16 operating hours was developed to maintain production quality and reduce defects in leather manufacturing SMEs. The proposed SOP is expected to improve product consistency, production efficiency, and maintenance practices.

Page 9 of 9 | Total Record : 85

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