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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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PEMBUATAN EDIBLE FILM BERBAHAN GELATIN KULIT SAPI SPLIT DENGAN PENAMBAHAN LEVEL GLISEROL Dwi Wulandari
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 1 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Gelatin is one type of protein extracted from skin collagen tissue, bone or animal ligament. One potential raw material is bovine split leather which is a byproduct of the tanning industry. One of the properties of gelatin that is shape of forming a film commonly known as edible films.The aims of this study was to know the properties of edible film of gelatin bovine leahther split with the addition of different levels of glycerol. RAL pattern studies using a factorial 2 x 3 with 2 levels of gelatin (4 g and 6 g) and 3 levels of glycerol (30%, 40%, 50%), with three replication. When there are real differences continued with Duncan's test mutiple Range Test (DMRT). The results edible film shows the average water content of 15.18%; thickness 0.15 mm; solubility of 9.9%; tensile strength of 0.94 MPa; 68.26% elongation and WVTR 22.28 g. H2O.m2.h-1. The result edible films can be used to wrapping that do not require high tensile strength, elongation and solubility. Keywords : bovine leather split, gelatin, edible film, glycerol
PENGARUH BAHAN FIKSASI TERHADAP INTENSITAS WARNA DAN KETAHANAN LUNTUR PEWARNAAN KULIT CRUST IKAN PARI DENGAN PEWARNA SECANG (Caesalpinia sappan L) Entin Darmawati
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 1 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Research objective is to now determine the effect of different fixation materials and dye concentration secang ( Caesalpinia sappan L ) Pari crust on the skin of the fish ( Dasyatis Khulii ) dye method to color intensity and fastness . Research coloring process secang on crust leather stingray with the Immersion Method Material Variation fixation (tawas, tunjung ) concentration (3%,6%,9%) b/v, the concentration of dyes cup (5 % , 10 % , 15 % w / v ), immersion time ( 60 minutes , 90 minutes , 120 minutes ) , the intensity of the color and fastness. Analysis of the data using the program Variant Analysis ( Anova ) classification 3 lanes. Results The color intensity and fastness test on crust leather stingray no difference to a dry rub to demonstrate the value of SS ( Stainning Scale ) of 4.0 ( good ) on secang concentration of 5 % w / v , staining time of 120 minutes and fixation Tunjung ( 6 % ) , the intensity of the color is darker ., A value of 4.5 ( good ) on the fixation of lotus 6 % % w / v , concentration secang 10 % w / v , staining time of 120 minutes . Fixation alum 6 % . SS value = 4.5 ( good ) , secang concentration of 10% , the intensity of a lighter color . It can be concluded that the intensity of the color indicates that the fixation material is able to bind more strongly lotus leave a blue-red color of the material fixation alum gives pink and test results of color fastness to rubbing lotus stronger than alum the higher the concentration of fixation , then the better the erosion resistance.
PENGARUH PENGAWETAN GARAM KCL PADA KUALITAS KULIT IKAN BUNTAL (Arothon reticularis) R. L. M. Satrio Ari Wibowo; Emiliana Anggriyani
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 1 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

This study aims to explain the effect of preservation with KCl on the quality of the puffer fish skin. The material used in this study was 50 pufferfish skin tail. The research was conducted in June to August 2015 in the Waste Laboratory of Polytechnic ATK and LPPT Universitas Gadjah Mada. Puffer fish skin preservation is done by soaking the skin puffer fish in each saturated KCl at a concentration 200Be and preserve skin blushes puffer fish with salt KCl for 4 weeks. Results of the reasearch were analyzed by descriptive analyses. The results showed that the longer the curing time, the levels of KCl in the skin of puffer fish is increasing, conversely levels of KCl in a saturated solution decreases. Conclusion of this research is KCl be used for preservation of puffer fish.
PENGARUH KONSENTRASI Na2S TERHADAP KEKUATAN TARIK DAN KEMULURAN PADA KULIT ULAR AIR (Hemalopsis Buccata) Elis Nurbalia
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 1 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

The purpose of this study was to determine the effect of the concentration of Na2S in the process liming/ scaling the tensile strength and elongation water snake crust leather (Hemalopsis Buccata). Raw material used is 12 sheets of water snake skin (Hemalopsis Buccata). In the scales removing process Na2S was used with concentration level of 0.5 oBe; 0.75 oBe; 1.0 oBe; 1.25 oBe. At the end of the crust leather tanning process, tensile strength and elongation were tested. The test results will be compared with SNI No. 06-4586-1998 of the quality requirements of chrome tanned water snake finished leather. From the tensile strength test result, increased concentrations of Na2S resulted in decreased tensile strength, though it still in accordance with the SNI with requirement at least 1000 N / cm2. From the elongation test results, note that all the elongation above a maximum of 30% requisite by SNI. Nonetheless refers to the suitability of common data quality requirements of various types of finished leather from BASF (2004), the leather still can be processed leather products due to the strong and soft texture. Increasing concentrations of Na2S will increase the pH value at the liming/ scaling and influence the tensile strength.
PENGARUH PENGGUNAAN BINDER GELATINE DARI KULIT AYAMAYAM (Abalistes stellaris) UNTUK FINISHING KULIT KRAS CAKAR AYAM TERHADAP KETAHANAN GOSOK CAT TUTUP Sri Sumarni
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 1 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

His research aims to study the use of artificial gelatine binder abalistes stellaris leather, as a replacement for a patent binder for finishing tanned crust chicken scratch leather on the paint rub resistance. The material used is abalistes stellaris leather with neutralization treatment using a 5% citric acid, hydrochloric acid 5%, and 5% Acetic Acid. The use of binder abalistes stellaris leather for finishing on crust leather scribble with variations: 2%, 4%, 6%, 8% and 10% (b/b) compared to gelatine patent binder by using 3%. then tested rub resistance damp cloth and a dry cloth (SNI. 06-1996-1989). Data analysis used a randomized block design or RCBD where a block is a fabric paints wet rub resistance rub resistance versus paint dry cloth, with treatments 2%, 4%, 6%, 8%, 10% artificial gelatine from abalistes stellaris leather. The results of the research that the patent binder and artificial binder of abalistes stellaris leather showed significant difference. In terms, on the research the most excellent binder, made from abalistes stellaris leather that uses neutralizing acetic acid 5% with the use of binders 4% and 6% yield scrub resistance of paint damp cloth and a dry cloth is good when compared to using neutralizing with acid chloride 5% and 5% citric acid and patent binder.
PERBEDAAN KUANTITAS DAN KUALITAS HASIL JAHITAN UPPER SEPATU ANTARA MESIN JAHIT MANUAL DAN HIGH SPEED Wawan Budi Setyawan
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 1 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

This study aims to assess the differences in quantity and quality of the stitching on the manual sewing machine and high speed sewing machine and to know how much difference the use of manual sewing machine with high speed sewing machines. Data collected of this experimental study using measurement instruments and test documentation. Sample is determined based on purposive sampling and selected one student who made a shoe upper with manual sewing machine and a high speed sewing machine. Quantity was measured by suture completion time, while the quality is measured from the appearance of its sew, stitching distance precisely, sew wrinkle, and its good looking. The results showed no difference in quality and quantity of stitching of manual sewing machines and a high speed sewing machine. The magnitude of the difference in production using a sewing machine manual sewing machine high speed terms of the mean difference of 15. Manual sewing machine has the characteristics of more familiar than the high speed sewing machine. It’s easier than high speed sewing machine because it have lowerspeed so the operator can adjust easily, eventhough bout the quantity its more longer.
STUDI KINETIKA CURING DARI RESIN PHENOL-FORMALDEHID DENGAN MODIFIER SODIUM METASILIKAT M. Wahyu Sya'bani; Warmiati Warmiati; Kutut Aji Prayitno
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 2 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

This study aims to obtain the curing kinetics of modified PF resin using sodium metasilicate. Three process steps are involved; polimerization of PF resin, thermal analysis and evaluation. In polimerization, phenol and formaldehyde are reacted with sodium hidroxide or sodium metasilicate as catalyst in batch reactor. Dynamic kinetics are done by calculating the heat flow during curing process using Differential Scanning Calorimetry (DSC). The temperature and heatflow data obtained at peak exotherm curve are used for calculating the kinetics. Resin structures are studied using FT-IR and SEM. The calculation result show that the activation energy (Ea) is 105.100 J/mol for PF resin with sodium metasilicate and 118.070 J/mol for PF resin without modifier. Whereas, FTIR analysis shows that there are O-H, aldehyde and C=C aromatics functional groups as the structures of PF Resin. The lower value of activation energy and curing temperature indicates the sodium metasilicate is potential as modifier for PF Resin.
ANALISIS TEKSTUR KULIT SAPI BERDASARKAN EKSTRAKSI CIRI CITRA Nunik Purwaningsih; Jamila Jamila
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 2 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

One of the animals whose leather is often taken and used in the leather industry is cow. There is cow leather having its original texture and some has been printed with other animal’s texture, meaning not in its original texture. Visually, it is difficult to know whether or not the cow leather printed with other motifs still have features of its original texture. This research aims to analyze the features of original cow leather texture and of that which has been modified. The research is conducted by feature extraction of the leather image using Gray Level Cooccurrence Matrix (GLCM). There are five features calculated including contrast, correlation, energy, entropy, and homogeneity. The experiments proved that the four angles of GLCM show the same thing, i.e. for contrast and entropy, the images of the cow leather that has been modified have higher value than those of original texture. While for the correlation, energy, and homogeneity the images of the cow leather that has been modified have a lower value than those taken from leather with its original texture.
OPTIMISASI MODEL PERSEDIAAN ECONOMIC PRODUCTION QUANTITY (EPQ) MULTI ITEM DENGAN KENDALA INVESTASI DAN KAPASITAS PENYIMPANAN PADA GUDANG PRODUK AKHIR Sigit Susanto
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 2 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

From the background of the company which produces several products ( ie bags, jackets , and shoes ) , limited capital or investment constraints , the limited storage capacity and the real system in the form of the production environment , obtained the formulation of the problem as follows: How to formulate a model of inventory in the production environment (model Economic Production Quantity / EPQ ) which is limited by the constraints of the investment and storage capacity constraints ? After the formulation of the model is obtained , followed by a search for solutions to the model were performed using lagrange multiplier that minimizes total inventory costs without exceeding storage capacity constraints and constrain to investment.
TEKNIK PEREKATAN BAHAN KULIT ATASAN SEPATU DENGAN BAHAN KARET MENGGUNAKAN METODE SPRAY Suharyanto Suharyanto
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 15 No 2 (2016): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

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Abstract

Gluing method with spray that the layer of glue is thin and flat is done in order to save glue and increase gluing quality as well as save the time. Dilution formula is 75 ml added with 150 ml diluent or a ratio of 1 than 2, or in percent 50% compared to 100%; with diluent using thinner, a volatile substance bringing the glue into gluing area in which it can be attached as the diluent evaporates. Data results show that 5 minutes drying time is 0.06407 N, 6 minutes 0.05002 N, 7 minutes 0.04446 N, N 0.03661 8 minutes and 9 minutes 0.02092 N. From the table and graph made, a good adhesive is glue with drying time of 5 minutes, then 6 minutes, 7 minutes, 8 minutes, and 9 minutes. From the results of research, it reveals that using sprayer is more efficient and effective, easy to use, showing good results, and saving time.

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