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Optimasi proses finishing kulit ikan nila (Oreochromis niloticus) untuk bagian atas sepatu Kasmudjiastuti, Emiliana
Majalah Kulit, Karet, dan Plastik Vol 30, No 2 (2014): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The aims of this study was to get the optimum finishing formulations of tilapia fish skin for shoe upper. The variations of experiment were four factors, namely of the variation of binders (1:2 and 1:3), lacquer water (1:1 and 1:2), plating temperatures (50, 65, 80 and 95Â°C) and plating time (0.5, 1, and 1.5 seconds). Testing was conducted on tensile strength, elongation at break, tear strength, stitch strength, softness, and colour fastness. Statistical analysis was conducted using the General Linear Model (GLM) followed by Tukeyâs Studentized Range Test (TSRT). The results showed that the optimum formula for finishing were performed by a variation of binder 1:2, lacquer water 1:2, temperature of plating 95Â°C and time of plating 1.5 seconds, and it was characterized by the physical properties of tensile strength 177.32 kg/cm2, elongation at break 62%, tear strength 41.92 kg/cm, stitch strength 113.06 kg/cm, softness 2.33 and generally met the standard requirements of SNI 0253:2009: Footwear upper leather - goat skin.Keywords: tilapia fish skin, aqueous top coat, leather finishing.ABSTRAKPenelitian ini bertujuan untuk mendapatkan formulasi optimum untuk finishing kulit ikan nila sebagai bagian atas sepatu. Variasi perlakuan dalam percobaan terdiri atas empat faktor yaitu variasi binder (1:2 dan 1:3), lak air (1:1 dan 1:2), suhu plating (50, 65, 80, dan 95oC), dan waktu plating (0,5; 1; dan 1,5 detik). Parameter mutu sampel meliputi uji kekuatan tarik, kemuluran, kekuatan sobek, kekuatan jahit, kelemasan, dan ketahanan gosok cat. Analisis statistik menggunakan General Linier Model (GLM) dilanjutkan dengan uji Tukeyâs Studentized Range Test (TSRT). Hasil penelitian menunjukkan bahwa formula optimum untuk finishing diperoleh dari perlakuan penggunaan binder 1: 2, lak air 1: 2, suhu plating 95oC dan waktu plating 1,5 detik. Bagian atas sepatu tersebut memiliki kekuatan tarik 177,32 kg/cm2, kemuluran 62%, kekuatan sobek 41,92 kg/cm, kekuatan jahit 113,06 kg/cm, kelemasan 2,33 dan secara umum parameter mutu bagian atas sepatu kulit ikan nila memenuhi persyaratan SNI 0253:2009 Kulit bagian atas alas kaki - kulit kambing.Kata kunci: kulit ikan nila, aqueous top coat, finishing kulit.

Pemanfaatan tanin dari kulit kayu tingi (Ceriops tagal) sebagai bahan penyamak nabati: pengaruh penambahan alum dan mimosa Kasmudjiastuti, Emiliana; Sutyasmi, Sri; Widowati, Titik Purwati
Majalah Kulit, Karet, dan Plastik Vol 31, No 1 (2015): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

This research aimed at determining the effectiveness of the Tingi barkâs extract as vegetable tanning material and the optimum formulations of Tingi extract for lining leather tanning, when combined with alum and mimosa. The research variables included the solution compositions of alum, Tingi extract, and mimosa, as well as the process sequences in which the hides were exposed to each aforementioned solution. There were 8 (eight) different treatments performed in this research; those are alum (4%)-Tingi, alum (6%)-Tingi, alum (4%)-Tingi-mimosa (5%), alum (6%)-Tingi-mimosa (5%), Tingi-alum (4%),Tingi-alum (6%), Tingi-mimosa (5%)-alum (4%), and Tingi-mimosa (5%)-alum (6%). Characterization methods included chemical and physical tests. The results show that the Tingi extract can be used as vegetable tanning material, and the optimum properties were obtained when the alum (4%) was added after the Tingi extract {Tingi-alum (4%)}.The optimum properties were shrinkage temperature of 86 oC; total ash content of 0.73%; water soluble matter of 0.89%; pH of 3.78; degree of tannage of 96.37%; tensile strength of 370.65 kg/cm2; elongation at break of 36.52%; rubfastness of 5 (dry); and 4 (wet). The resulting leather also meet the requirements of Ethiopian Standard 1185:2005, Leather-Lining leather-Specification. Keywords: Tingi barkâs extract, alum, mimosa, vegetable tanning, lining leather.ABSTRAKPenelitian ini bertujuan untuk mengetahui efektifitas ekstrak kulit kayu Tingi sebagai bahan penyamak nabati dan formulasi ekstrak Tingi yang optimal pada penyamakan kulit lapis, ketika dikombinasikan dengan alum dan mimosa. Variabel penelitian meliputi komposisi larutan alum, ekstrak Tingi, dan mimosa, serta urutan proses di mana kulit diekspos ke masing-masing larutan tersebut di atas. Terdapat 8 (delapan) perlakuan berbeda dalamÂ penelitian ini, yaitu alum (4%)-Tingi, alum (6%)-Tingi, alum (4%)-Tingi-mimosa (5%), alum (6%)-Tingi-mimosa(5%), Tingi-alum (4%), Tingi-alum (6%), Tingi-mimosa (5%)-alum (4%), and Tingi-mimosa-alum (6%). Metode karakterisasi meliputi pengujian kimia dan fisika. Hasil penelitian menunjukkan bahwa ekstrak Tingi dapat digunakan sebagai bahan penyamak nabati, dan sifat-sifat optimum diperoleh ketika penambahan alum (4%) dilakukan setelah penambahan ekstrak Tingi {Tingi-alum (4%)}. Sifat-sifat optimum tersebut adalah: suhu kerut 86oC; kadar abu jumlah 0,73%; kadar zat larut dalam air 0,89%; pH 3,78; derajat penyamakan 96,37%; penyamakan masak; kekuatan tarik 370,65 kg/cm2; kemuluran 36,52 %; ketahanan gosok cat nilai 5 (kering) dan 4 (basah). Kulit yang dihasilkan juga memenuhi persyaratan Ethiopian Standard 1185: 2005, LeatherâLining leather-Specification. Â Kata kunci : kulit kayu Tingi,Â alum, mimosa, bahan penyamak nabati,Â kulit lapis.

Pengaruh berbagai jenis penyamakan dan tipe finish terhadap morfologi, sifat organoleptis dan mekanis kulit biawak (Varanus salvator) Kasmudjiastuti, Emiliana; Sutyasmi, Sri; Murti, Rihastiwi Setiya
Majalah Kulit, Karet, dan Plastik Vol 31, No 2 (2015): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Monitor lizard (Varanus salvator) skin is exotic leather because it has a unique grain. Therefore, the original grain of the animal needs to be maintained in the finishing process so that its performances look likes natural. This research aimed to study the effect of tanning materials (vegetable and chrome) and the type of finish (natural, aniline, semi-aniline and two tone) on morphology, organoleptic and mechanical properties of lizard skin. The materials used in this study were dry preserved lizard skins. The research varied on the types of tanning (vegetable and chrome) and the type of finish (natural, aniline, semi-aniline and two tone) each by varying the finishing materials (casein and protein binders). The tests were conducted on the observation of the structure using photomicrographs, rub fastness, adhesion of finish strength, tensile strength, elongation at break and organoleptic. The results showed that the best result was vegetable tanned lizard skin using natural finish with casein and met the requirements of SNI 06-4362-1996, lizard skin for shoe upper. This gave dry and wet rub fastness of 5 and 5 respectively; dry and wet adhesion of finish strength of 650 and 100 g/cm respectively; tensile strength of 207.43 kg/cm2; elongation at break of 37.52% and organoleptic value of panelists observations of 87.9 (good).Keywords: Monitor lizard (Varanus salvator) skin, tanning, finish type, morphology, organoleptic and mechanical propertiesABSTRAKKulit biawak (Varanus salvator) merupakan kulit exotic karena memiliki rajah yang unik, oleh karena itu dalam proses finishingnya rajah asli dari binatang tersebut perlu dipertahankan agar tampak alami. Penelitian ini bertujuan untuk mengetahui pengaruh jenis bahan penyamak (nabati dan krom) dan tipe finish (natural, anilin, semi anilin, dan two tone) terhadap morfologi, sifat organoleptis dan mekanis kulit biawak. Bahan yang digunakan dalam penelitian ini adalah kulit biawak awet kering dan variasi yang dilakukan meliputi variasi jenis penyamakan (nabati dan krom) dan tipe finish (natural, anilin, semi anilin, dan two tone) dengan penggunaan bahan finishing yang bervariasi (kasein dan binder protein). Uji yang dilakukan meliputi pengamatan struktur menggunakan fotomikrograf, uji ketahanan gosok cat, kekuatan rekat cat tutup, kekuatan tarik, kemuluran, dan organoleptis. Hasil penelitian menunjukkan bahwa hasil yang terbaik adalah kulit biawak yang disamak nabati menggunakan tipe finish natural dengan kasein dan memenuhi persyaratan SNI 06-4362-1996, Kulit biawak untuk atasan sepatu, dengan nilai ketahanan gosok cat kering dan basah berturut-turut 5 dan 5; kekuatan rekat cat tutup kering dan basah berturut-turut 650 dan 100 g/cm; kekuatan tarik 207,43 kg/cm2; kemuluran 37,52%; dan nilai organoleptis hasil pengamatan panelis 87,9 (baik).Kata kunci: kulit biawak (Varanus salvator), penyamakan, tipe finish, morfologi, sifat organoleptis dan mekanis.

Karakterisasi kulit kayu tingi (Ceriops tagal) sebagai bahan penyamak nabati Kasmudjiastuti, Emiliana
Majalah Kulit, Karet, dan Plastik Vol 30, No 2 (2014): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Tingi (Ceriops tagal) bark was highly potential as tanning materials due to high tannin concentration. The aim of the study was to determine the characterization of properties of tanning material made from tingi bark, including the tannin levels, the non-tannin levels, the tannin type, the absorption level of the solution and the FTIR spectrum analysis. The method used in this research was countercurrent system in the extraction process, feed solution preparation process, the thickening process, powder formation process conducted with the aid of Rotavapor- 151 Standard, and testing. The results showed that the tingi bark contains tannin level 70.91% and non-tannin levels 10.63%. Tannins from tingi bark were classified as procyanidin condensed tannins type and the absorption values obtained maximum value at wavelength 490 nm. The FTIR spectral data indicated that tingi tannins contained hydroxyl group (â±± O-H; â±± N-H) in the area (3467.418-3057.025) cm-1, aromatic group (â±± C-H) in the area of 2875,733 cm-1, â±± C=O (ester group in tanned material) in the area (1747.442-1612.422) cm-1, â±±-OH; R-COO-in the area of 1444.626 cm-1 and â±±(SO4)2 -; R-SO3; R-SO3H in the area (1112.823-1062.729) cm-1. Keywords: FTIR spectrum, procyanidin, tingi bark, tannin, solution absorption ABSTRAKKulit kayu tingi (Ceriops tagal) berpotensi sebagai bahan penyamak nabati mengingat kandungan tanin yang tinggi. Tujuan penelitian adalah untuk mengetahui karakterisasi bahan penyamak tingi terhadap kadar tanin, kadar non tanin, tipe tanin, absorpsi larutan tingi dan spektrum FTIR. Metode yang dilakukan meliputi pembuatan ekstrak larutan dengan sistem counter current, preparasi larutan umpan, pemekatan, pembentukan serbuk menggunakan Rotavapor-151 Standard, dan pengujian. Hasil karakterisasi kulit kayu tingi menunjukkan kandungan tanin 70,91% dan kadar non tanin 10,63%. Tanin tingi termasuk golongan condensed tannin tipe procyanidin dan absorpsi larutan tingi didapatkan panjang gelombang maksimum 490 nm. Data spektrum FTIR tanin tingi menunjukkan adanya gugus hydroksil (â±±O-H; â±±N-H) pada area (3467,418-3057,025) cm-1, gugus aromatik (â±±C-H) pada area 2875,733 cm-1, â±±C=O (ester group in tanned material) pada area (1747,442-1612,422) cm-1, â±±-OH; R-COO- pada area 1444,626 cm-1 dan â±±(SO4)2-; R-SO3; R-SO3H pada area (1112,823-1062,729) cm-1.Kata kunci: spektrum FTIR, procyanidin, kulit kayu tingi, tanin, absorpsi larutan.

Penggunaan enzim bacillus megatorium DSM-319 pada proses perendaman penyamakan kulit jaket Susila, R. Jaka; Kasmudjiastuti, Emiliana; Sutyasmi, Sri
Majalah Kulit, Karet, dan Plastik Vol 29, No 2 (2013): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

ABSTRACTThe purpose of the study was to obtain eco-friendly soaking process for goatskin and to shorten the soaking time. The enzyme used in the soaking process was Bacillus megatorium DSM-319, with enzyme concentration of 0.5, 1, and 1.5% and soaking time of 1, 1.5, and 2 hours. Each sample were tested for skin histology observation using photomicrograph, protein concentration analysis, tensile strength, elongation, colour fastness (dry and wet) and flexibility. The results showed that protein content of goat skin was decreased 42.32% after optimum soaking with 1% enzyme for one hour. The results of the physical testing of jacket leather with optimum soaking process met the quality requirements of SNI 4593:2011 Sheep/goat jacket leather.Keywords: Bacillus megatorium DSM-319, enzyme, soaking, goatskin, jacketABSTRAKTujuan penelitian ini adalah untuk mendapatkan proses perendaman kulit kambing yang ramah lingkungan dan untuk mempersingkat waktu proses perendaman. Enzim Bacillus megatorium DSM-319 digunakan dalam perendaman dengan konsentrasi enzim berturut turut 0,5; 1 dan 1,5% dan variasi waktu berturut turut 1; 1,5 dan 2 jam. Evaluasi keberhasilan proses perendaman dilakukan dengan pengamatan histologi kulit menggunakan fotomikrograf, analisis kadar protein, kekuatan tarik, kemuluran, ketahanan gosok cat (kering dan basah) dan kelenturan. Hasil analisis kadar protein menunjukkan bahwa kadar protein kulit kambing setelah perendaman optimal pada konsentrasi enzim 1% selama 1 jam dengan penurunan sebesar 42,32%. Hasil uji fisika kulit jaket dari kulit kambing hasil perendaman dengan konsentrasi enzim sebesar 1% selama 1 jam telah memenuhi persyaratan mutu yang sesuai dengan SNI 4593:2011 Kulit jaket domba/kambing.Kata kunci: Bacillus megatorium DSM-319, enzim, perendaman, kulit kambing, jaket

Spektroscopi FTIR dan sifat mekanik nanokomposit grafting HDPE dan nanoprecipitated calcium carbonate (NPCC) Yuniari, Arum; Kasmudjiastuti, Emiliana
Majalah Kulit, Karet, dan Plastik Vol 28, No 2 (2012): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

ABSTRACTThe purpose of this research based on high density polyethylene (HDPE) and nanoprecipitated calciumcarbonate (NPCC) was to evaluate the effect of nanoprecipitated calcium carbonate (NPCC) on FTIR spectroscopy and mechanical properties. The nanocomposites was prepared with a rheomix 3000 Haake at 180 Âº C and 50 rpm of rotor speed for 10 minutes. The composition of HDPE and additives were permanently, and NPCC content varied 10, 15, 20, 30, 40 and 50 phr (per hundred resin) respectively and control was made inherent NPCC. The nanocomposites were characterized using tensile strength, hardness tester, electro densimeter and Fourier Transform Infra Red (FTIR) spectroscopy techniques. The results of mechanical properties showed that the increasing the amount of NPCC was able increase hardness and density while elongation at break more stable and tensile strength decreased. Analysis functional group on nanocomposites with Fourier Transform Infra Red (FTIR) indicated a new peak on wave band 3472,49 cm-1Â (OH stretching).ABSTRAKPenelitian tentang pembuatan nanokomposit dari bahanÂ high density polyethylene(HDPE) danÂ nanoprecipitated calciumcarbonateÂ (NPCC) bertujuan untuk mengetahui pengaruh penambahanÂ fillerÂ NPCC terhadap sifat mekanik dan spektroscopi. Nanokomposit dibuat dengan Rheomix 3000 Haake pada suhu 180oC dan kecepatan 50 rpm selama 10 menit. Komposisi HDPE dan bahanÂ aditifÂ dibuat tetap, dan kandungan NPCC divariasi berturut-turut 10 ; 20 ; 30; 40 dan 50Â phrÂ (per hundred resin) dan dibuat kontrol tanpa ditambah NPCC. Sifat mekanik diuji dengan alat ujitensile strength, hardness,Â densimeter dan karakterisasi gugus fungsi ditentukan menggunakanÂ Fourier Transform Infra RedÂ (FTIR). Hasil uji sifat mekanik menunjukkan semakin tinggi jumlah NPCC kekerasan dan densitas naik, kemuluran tetap sedangkan kuat tarik cenderung turun. Spektrum nanokomposit HDPE/NPCC menunjukkan terjadinya puncak baru pada bilangan gelombang 3472,49 cm-1 (OH stretching).

Penggunaan ekstrak kayu nangka (artocarpus heterophyllus) sebagai bahan pewarna untuk kulit Kasmudjiastuti, Emiliana; Widhiati, Widhiati; Kuwatno, Kuwatno
Majalah Kulit, Karet, dan Plastik Vol 17, No 1-2 (2001): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The objective of this experiment was to evaluate the effect Alum content and time of mordanting on the rub fastness. Natural dyes from wood dyes Artocarpus heterophyllus haved an intermediate acid resistance (acetic acid), a good alkali resistance (natrium carbonat0 but they had very low sulphur acid resistance and low formic acid resistence. Natural dyes from wood dyes Artocarpus heterophyllus could be used as colouring matter on goat skin distributed throughout the substance of the fibre goat skin. Their rub fastness was a good (dry and wet). The variation of amounts alum (1%, 2%, 3%) and treatment of mordanting (before and during dyeing) did not influence on rub fastness (dry and wet).Â INTISARIÂ Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan variasi kadaralum dan perlakuan mordanting terhadap ketahanan gosok cat. Zat warna alam dari ekstrak kayu nangka (Artocarpus heterophyllus) mempunyai ketahanan terhadap asam asetat cukup baik dengan nilaiÂ pada skala grey scale tetapi ketahanan terhadap asam sulfat dan asam formiat kurang baik (nilaiÂ 1 dan nilai 2). Ketahanan terhadap basa (Natrium carbonat) menunjukkan hasil yang baik dengan nilai 4 pada skala grey scale. Zat warna alam tersebut dapat menyerang baik pada jaringan kulit kambing dan menghasilkan warna yang baik terhadap ketahanan gosok cat baik secara kering maupun secara basah. Perlakuan variasi kadar alum (1%, 2%, 3%) dan perlakuan mordanting (sebelum dan selama pewarnaan) tidak mempengaruhi ketahanan warna terhadap gosokan kering dan basah.Â

Penerapan sablon pada finishing kulit suede Kasmudjiastuti, Emiliana; Astuti, Emi Sulistyo
Majalah Kulit, Karet, dan Plastik Vol 20, No 1 (2004): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The application of screen printing on suede leather is the method to improve a high fashion of the apparel material. The motif was applied on the flesh or the grain of suede letherÂ by screening method. The objective of this research is to identify the effect of using the pigment and aniline dye on the adhesion of the finish and the rub fastness suede leather finished with screen printing and also to add a kind of type of finish leather. In this research suede leather was used and colour paste with formulation of binder 350 grams, thickener 100 grams, pigment / aniline 150 grams, filler 70 grams, catalisator 20 grams and water 310 grams. The suede leathers were analyzed their adhesion of the finish (dry and wet) and the rub fastness (dry and wet). The results showed that the pigment and aniline affected the adhesion of the finish but did not affect the rub fastness. The adhesion of the finish ofÂ suede leather with pigment colour was 2130 g/cm (dry), 1865 g/cm (wet). While the adhesion of the finish of suede leather with aniline dye was 1720 g/cm (dry) and 1010 g/cm (wet) respectively. The suede leather with pigment and aniline colour resistance to dry and wet rubbing Â Keywords : Â suede leather, pigment, aniline, screen printing. Â Â Â Penerapan teknik sablon dengan motif batik adalah metode untuk mengembangkan bahan pakaian untuk mode / fashion. Motif diterapkan pada kulit suede bagian nerf ataupun daging (flesh) dengan menggunakan alat screen yang telah dirancang dengan motif batik. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan zat warna pigmen dan anilin terhadap kuat rekat cat dan ketahanan gosok cat kulit suede yang difinish dengan teknik sablon dan juga menambah ragam tipe finish untuk kulit. Bahan yang digunakan adalah kulit suede, pasta cap dengan formulasi bahan perekat 350 gram, pengental 100 gram, zat warna (pigmen / anilin) 150 gram, bahan pengisi 70 gram, katalis 20 gram, air 310 gram. Kulit suede yang telah disablon diuji kuat rekat cat (kering dan basah) dan ketahanan gosok cat (kering dan basah). Hasil uji menunjukkan bahwa penggunaan jenis zat warna ada pasta cap berpengaruh pada kuat rekat cat tetapi tidak berpengaruh pada ketahanan gosok cat. Nilai kuat rekat cat kulit suede yang disablon dengan zat warna pigmen adalah 2.130 g/cm (kering) dan 1.865 g/cm (basah); dengan zat warna anilin 1.720 g/cm (kering) dan 1.010 g/cm (basah). Kulit suede yang disablon dengan zat warna pigmen maupun anilin tahan terhadap gosokan secara kering dan basah.Â Kata Kunci : Kulit suede, pigmen, anilin, sablon.

Peningkatan ketahanan suhu dingin kulit atasan sepatu melalui pengurangan daya penyerapan air dan pengaruhnya terhadap sifat fisik dan morfologi Prayitno, Prayitno; Kasmudjiastuti, Emiliana
Majalah Kulit, Karet, dan Plastik Vol 33, No 1 (2017): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

A research has been undertaken to increase the cold resistance of upper leather by decreasing its water absorption ability. Fluorinated acrylic polymer, a water repellent substance, was added at fatliquoring and finishing stages of upper leather with different concentrations levels. Research findings showed that an increase in the water-repellent concentration, i.e. by 5; 7.5; 10; 12.5; and 15%, result in increases in tensile strength, tearing strength, and elongation at break, whereas decreases in water absorption ability. No significant differences for the other physical properties such as water vapor absorption, water vapor permeability, and flexing resistance and they met the standard for shoe leather. Results of scanning electron microscopy indicated an increased thin layer of water repellent on leather fibers as the water-repellent concentration increased. The leather fibers looked smoother, glistened, and thicker. This indicates the penetration of water repellent onto leather fibers.Keywords: water absorption, water repellent, cold resistance, upper leather.

Penelitian finishing kulit lemas (softy leather) dari kulit kambing untuk tas wanita Widhiati, Widhiati; Kasmudjiastuti, Emiliana; Astuti, Emy Sulistyo; Suharjono, Suharjono; Susilo, Joko; Kuwatno, Kuwatno; Suryadi, Suryadi
Majalah Kulit, Karet, dan Plastik Vol 12, No 24 (1997): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

This research is aimed at finding the competition of paint substance which optimal applied for softy sheep leather for ladyâs bags manufacturing. Materials used in this study were 27 pieces of pickled sheep stock and simple factorial 3 x 3 was use for the research plan, the treatment of which is combination binder RU 3989 (150 gram, 200 gram, 250 gram) and pigment (75 gram, 100 gram, 125 gram) for 1,000 gram paint solution. The research result indicates that the proportion of paint substance composition optimal applied to sheep which are tanned to be softly leather for ladyâs bags manufacturing is the combination of 250 gram binder RU 3989 and 75 gram pigment in 1,000 gram paint solution, and the test result fulfil the requirements of sheep garment leather quality.Â Â INTISARIÂ Penelitian ini bertujuan untuk mendapatkan perbandingan komposisi bahan bahan untuk cat tutup yang optimal bagi kulit kambing yang disamak menjadi kulit lemas untuk tas wanita. Bahan yang digunakan dalam penelitian ini adalah kulit kambing awet asam (pikel) sebanyak 27 lembar. Rancangan penelitian menggunakan simple factorial 3 x 3 dengan perlakuan kombinasi perekat (binder) RU 3989 (150 gram, 200 gram, 250 gram) dan zat warna (pigmen) (75 gram, 100 gram, 125 gram) untuk setiap 1.000 gram larutan cat tutup. Hasil penelitian menunjukkan bahwa perbandingan komposisi bahan bahan cat tutup yang optimal bagi kulit kambing yang disamak menjadi kulit lemas untuk tas wanita adalah perlakuan kombinasi antara perekat RU 3989 sebanyak 250 gram dan zat warna 75 gram dalam 1.000 gram larutan cat tutup dan hasil uji memenuhi persyaratan mutu kulit jaket dari kulit domba/kambing.

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