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All Journal Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Nais Pinta Adetya
Department of Leather Processing Technology, Politeknik ATK Yogyakarta, Yogyakarta, Indonesia

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THE EFFECT OF ANIONIC OIL ON THE SOFTENING PROCESS OF OLD STOCK UPHOLSTERY LEATHER USING PADDING METHOD Fadzkurisma Robbika; Nais Pinta Adetya; Sofwan Siddiq Abdullah; Atiqa Rahmawati; Heru Budi Susanto
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol. 23 No. 2 (2024): Berkala Penelitian Kulit, Sepatu, dan Produk Kulit
Publisher : Politek ATK Yogyakarta Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58533/8fwmew18

Abstract

Location and mechanism of leather storage that is not ideal can cause changes in the character of the old stock leather. One of the effects that is often found when storing finished leather is reducing skin softness. The conventional method of increasing leather softness of old stock is through a mechanical staking process. Staking will only be effective in softening the leather if the leather has enough oil content, if it doesn't have enough oil content it will potentially cause cracks in the grain. In this study, control leather (K) was only given mechanical treatment. Meanwhile, for treatment leather (T), the mechanical process is carried out before and after adding mayonnaise oil using a rubbing method on the flesh to maximize the oil lubrication effect on old stock leather. The use of anionic oil, mayonnaise oil, which is applied to the flesh of the skin using the wiping method on T skin, produces a higher difference in the increase in softness, namely 0.5 mm, when compared to K leather which only undergoes a mechanical process (staking and toggling), namely 0.3 mm. This shows that the addition of mayonnaise oil and emulsifier to the flesh is able to re-lubricate the leather fibers thereby increasing skin laxity.
UPGRADING REJECTED CRUST LEATHER INTO A BATTING GLOVE ARTICLE WITH A DIGITAL MATRIX EMBOSS MOTIF Erlinda Rahma Damayanti; Nais Pinta Adetya; Ragil Yuliatmo
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol. 23 No. 2 (2024): 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/efwa9j50

Abstract

The aim of the research is to upgrade goat crust leather which was declared rejected to be made into batting glove articles with digital matrix embossed motifs, so as to increase the quality and selling value of the leather. Rejected leather is leather that does not meet the specifications of the intended article, for example defects, thickness and area. The digital matrix motif has a 3D pattern, so apart from adding aesthetic value, the digital matrix application on batting gloves also increases user comfort. The raw materials used were 4 pieces of crust reject leather which had wrinkles, ticks, fleas and coarse grain defects. Repairs were carried out using 2 methods, namely 3 skins using method A (re-process retanning, finishing, re-fatliquoring) and 1 skin using method B (finishing, re-fatliquoring). Testing is carried out physically. The results of physical testing showed that skin using method B was better in the elongation test (52.3%>49.5%) and softness (6.1mm>5.4mm). The results of the skin color fastness test using method A have better scores, namely 4/5 for dry paint rubbing resistance (staining and change in color) and 3/4 (staining and change in color) for wet paint rubbing resistance.
Co-Authors Atiqa Rahmawati Erlinda Rahma Damayanti Fadzkurisma Robbika Heru Budi Susanto Ragil Yuliatmo Sofwan Siddiq Abdullah