Muchtar Lutfi
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Pemanfaatan kulit skrotom sapi sebagai bahan baku industri barang kulit Muchtar Lutfi; Widhiati Widhiati
Majalah Kulit, Karet, dan Plastik Vol 15, No 2 (1999): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1794.049 KB) | DOI: 10.20543/mkkp.v15i2.261

Abstract

The aim of the research was to make use of cow scrotum hides to be raw material in leathergood manufacturing. Forty five pieces of scrotum hides were tanned to crust leather using subsequently 6%, 8% and 10% mineral tanning agent; 15%, 20% and 25% vegetable tanning agent; 15%, 20% and 25% synthetic tanning agent. The physical test results indicated that scrotum cow hides were able to be made use as raw material in leathergood manufacturing. The best tensile strength value was achieved by those tanned with mineral tanning agent 10% (175,33 kg/cm2) and the best elongation at break was achieved by those tanned with synthetic tanning agent 15% (41,00%). Where as by using vegetable tanning agent, no single sample fulfilled the requirements of SNI. 06-0253-1989, Quality and Testing method for Glaced Kid Leather.   INTISARI  Penelitian ini bertujuan untuk memanfaatkan kulit skrotom sapi sebagai bahan baku industri barang kulit. Empat puluh lima buah kulit skrotom sapi disamak menjadi kulit kras dengan bahan penyamak mineral 6%; 8%; 8% dan 10%, penyamak nabati 15%%; 20% dan 25%, penyamak sintetis 15%; 20% dan 25%. Hasil uji fisika menunjukkan bahwa kulit skrotom sapi bisa dimanfaatkan menjadi bahan baku industry barang kulit. Kekuatan tarik terbaik adalah dengan bahan penyamak mineral 10% (175,33 kg/cm3) dan kemuluran yang terbaik adalah dengan bahan penyamak sintetis 15% (41,00%). Sedangkan dengan bahan penyamak nabati tidak ada yang memenuhi persyaratan SNI.06-0253-1989 Kulit Glace Kambing, Mutu dan Cara Uji.
Mutu kulit glase dari kulit domba peranakan merino Bambang Oetojo; Muchtar Lutfi; Widari Widari; Hasan Basalamah
Majalah Kulit, Karet, dan Plastik Vol 5, No 9 (1990): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1310.951 KB) | DOI: 10.20543/mkkp.v5i9.457

Abstract

This research used four pieces of good quality merino descendent sheep skin and four pieces of good quality local sheep of glace leather produced from merino descendent sheep skin to that one from local sheep skin. Either merino descendent sheep skins or the local ones were processed into glase leather through the ordinary tanning method. Glace leather output from this research were visual investigated and physical tested. Statistical analysys points out that there is unsignify difference (P ≼ 0,05) the influence of the species either it is merino and the stretch of glaze leather. It is also unsignify difference (P ≼ 0,05) the influence of the species either it is merino descendent sheep skin or the local one to the quality of glaze leather.Pratical meaning of this research is that merino descendent sheep skin may be tanned into glaze leather having same quality to that one from local sheep skins. 
Penelitian jumlah penggunaan bating agent pada penyamakan kulit sarung tangan (fashion glove) dari kulit kelinci Muchtar Lutfi; Widhiati Widhiati; Esti Rahayu; Kasmin Nainggolan
Majalah Kulit, Karet, dan Plastik Vol 9, No 16 (1994): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1377.917 KB) | DOI: 10.20543/mkkp.v9i16.401

Abstract

The objective of this research is to identify the quatity of bating agent used in tanning rabbit skins to be glove leather, to make use rabbit skins which can not be tanned to fur rabbit skin leather. The materials used in this research were of 40 pieces of lokal salt preservated rabbit skins originated from Yogyakarta having quality III and IV. They were grouped into four and the groups consisted of ten pieces each were tanned to be fashion glove leather using 4% formaline as pretanning agent and followed by chrome tanning agent as the retanning agent. Before carrying out both tanning processes bating was done on them using Pancreol Bate as bating agent. The quantity of bating agent added was varried as 0,65%, 1,2%, 1,8% and 2,4%. The process used was of usually carried - out by IRDLAI. The leather produced were tested on their sotfness, with sheepskin glove leather was used as the measuring- rod; their tensile strength resistance and flexibility with SII. 0061 – 74 (Quality and test method for goatsheep skin glove and garment leather) as the standard of comparison. The test results were statistically evaluated. A conclusion can be down from this research that by using 0,6% Pancreol Bate on bating process, soft glove leathers having good tensile strength and flexibility which fulfill the requirements of SII. 0061 - 74 can be produced.
Mutu kulit jaket dari kulit domba peranakan merino Bambang Oetojo; Muchtar Lutfi; Widari Widari; Hasan Basalamah
Majalah Kulit, Karet, dan Plastik Vol 5, No 9 (1990): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1307.668 KB) | DOI: 10.20543/mkkp.v5i9.458

Abstract

To compare the quality of jacket leather output from merino descendent sheep skin to that one yield from local sheep skin is the purpose of this research. For this comparative research it was used four pieces of good quality merino descendent sheep skin and four pieces of good quality local sheep skin. Through the ordinary tanning method, all of the skins, either merino descendent sheep skins or the local one were process into jacket leather. Further more the jacket leathers output from this research were visual investigeted and physical tested. Statistical analysis points out that there is unsignify difference (P ≼ 0,05) the influence of the spesies either it is merino descendent sheep skin or the local one to the tensile strenght and the stretch of jacket leather. It is also unsignify difference (P ≼ 0,05) the influence of the spesies either it is merino descendent sheep skin or the local one to the quality of jacket leather.Practical meaning of this research is that merino descendent sheep skin may be tanned into jacket leather having same quality to that one from local sheep skin. 
Rumen kambing sebagai bahan baku barang kulit Muchtar Lutfi
Majalah Kulit, Karet, dan Plastik Vol 9, No 18 (1994): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20543/mkkp.v9i18.416

Abstract

The objective of this research is to identify the physical strength of crust of goat rumen to decide their benefit. Materials used in this study were 8 pieces of salted goat rumens which were then tanned to crust leather using chromosal B, and Irgatan LV. as tanning and retaning material. The crust leather, then, were tested on their strength and flexibility at Laboratory of leather and leather product quality control and normalization IRDLAI and the result showed that the tensile strength was low of (on average) 29,84 Kg./Cm2, while the flexibility (on average) was 103,13%. Viewed from the test result, the skins were still possible to be prepared as a kind of leather, or the skins were used as car whell sterring cover.  INTISARI Penelitian ini bertujuan untuk mengetahui kekuatan fisis kulit kras dari rumen kambing agar dapat ditentukan pemanfaatannya. Dengan menggunakan 8 buah rumen kambing awet garaman disamak menjadi kulit kras dengan menggunakan Chromosal B. sebagai bahan penyamak dan Irgatan LV. sebagai bahan penyamak ulangnya. Kulit kras hasil penelitian ini diujikan kekuatan tarik dan kemulurannya di Laboratorium PMNK. Balai Pengembangan Barang Kulit, dan didapatkan hasil kekuatan tarik yang rendah yaitu sebesar (rata-rata) 29,84 Kg./Cm2. sedangkan kemulurannya (rata-rata) 103,13%. Dilihat dari hasil uji tersebut, kulit dari rumen kambing masih memungkinkan dimanfaatkan untuk pengolahan sejenis dompet atau tas untuk wanita dengan cara dilapisi dengan kulit yang lain, atau dimanfaatkan untuk pembungkus stir mobil.
Penyamakan kulit ular untuk barang ekspor Muchtar Lutfi
Majalah Kulit, Karet, dan Plastik Vol 8, No 14 (1992): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1523.389 KB) | DOI: 10.20543/mkkp.v8i14.481

Abstract

The objective of this research is to acquire an appropriate method of tanning furcess of snake skins having soft and smooth surface of finished leather, can be used to manufactore export quality goods an assist small scale industries in improving their products quality. A hundered and twenty pieces of najan Sputatrex L. cobra snake skins were imployed as raw material in this study. In pretanning, formaline to soften and smooth the surface of the finished leather, was used the formula of which was 100 % water 6 % NaCl, 4% formaline and 1% Na2CO3. The samples then were separated into six groups. Each group was retanned with chrome, syntetic, vegetable, tanning agent and processed using IRDLAI method to be finished leather. The finished leathers then were visually inspected about their flexibility, compactness, the softness, the smootnees of the skins surface, shades and the change of the shape when stretching. They were also subjected into physical test of colour fastness. The results of the test were statistically (CRD), and “Duncan”test method analysed. It could be concluded that the best result was achieved by snake skins which were pretanned using formaline and retanned using chrome-vegetable tanning agents.   INTISARI Penelitian ini bertujuan untuk mendapatkan cara penyamakan kulit ular yang lemas dan halus permukaan kulit jadinya, dapat digunakan untuk barang ekspor dan membantu industri kecil dalam peningkatan mutu produksinya. Penelitian ini menggunakan 120 lembar kulit ular cobra Najan Sputatrix L. segar yang dalam proses penyamakan pendahuluan (pratanning) menggunakan formalin untuk mencapai kelemasan dan kehalusan permukaan kulit jadinya dengan menggunakan formulasi untuk pratanning adalah : 100% air, 6% NaCl, 4% formalin dan 1% Na2CO3. Selanjutnya dari 120 lembar kulit tersebut dibagi menjadi 6 kelompok yang masing-masingnya 20 lembar. Masing-masing kelompok disamak ulang dengan bahan penyamak krom, sintetis, nabati, krom nabati, krom sintetis, dank rom sintetis nabati, yang selanjutnya diproses hingga kulit jadi (finished leather), yang caranya sesuai dengan proses yang ada di BBKKP. Kulit hasil penelitian diuji secara organoleptis tentang kelemasan, kepadatan, kehalusan permukaan, kerataan warnanya serta perubahan bentuk bila ditarik, juga diuji fisis tentang ketahanan gosok catnya. Hasil uji dianalisa secara statistic (CRD) dan dites “Duncan”. Hasil penelitian menunjukkan bahwa kulit yang disamak pendahuluan dengan formalin dan disamak ulang dengan bahan penyamak krom nabati adalah merupakan produk kulit ular yang terbaik
Pengaruh penggunaan pankreas kambing awetan terhadap kekuatan tarik dan kemuluran kulit kras kambing Muchtar Lutfi
Majalah Kulit, Karet, dan Plastik Vol 6, No 10-11 (1991): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (854.391 KB) | DOI: 10.20543/mkkp.v6i10-11.464

Abstract

Took 10 pieces salted goat skins which same quality, cut in 20 sides follow the back bone line devided into 5 groups, each group consist 4 sides. All this sample be processed to crust leather accorfing to IRDLAI procedure. In tbating processing the substitute for oropon was cured of goat pancreas.For 5 groups sample each used 0; 0,75 ;1,5 ; 2,25 and 3 procentage of cured pancreas. For tensile strength and stretch testing used the part of croupon, shoulder and belly. Analisis static using CRD nested sample and factorial 3 × 5 and subsequently be done Tukey test. There was a real differences (P<0,01) betweem temsile strength by effects of concentration of pancreas also with it’s stretch.The best consentration can be suggested were 0,75 ; 1,5 ; 2,25 procentage. Average tensile strength for each of them were 183,2 Kg/cm2 ; 177,3 Kg/cm2 and 207,1 Kg/cm2, and the stretch wich close with the standart only on the concentration 2,25% that was 66,6%.
Pengaruh ammonia sebagai “killing agent” pada pengecatan bulu kulit kelinci Bambang Oetojo; Muchtar Lutfi; Esti Rahayu
Majalah Kulit, Karet, dan Plastik Vol 4, No 8 (1989): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20543/mkkp.v4i8.455

Abstract

The objective of this research is to find out the effluence of ammonium  hydroxide as killing agent to the uniformity and fintness of the colour of rabbit fur after dyeing. This research made use of 27 pieces of green salted rabbit skin having white colour. In killing process the rabbit fur was treated recpectively in a liquar of 10, 15 and 20 cubic centimetres of ammonium hydroxide of 22% strength in one litre of water, furthermore the fur was dyed. The dyed fur was visually examined for the uniformity and fitness of the colour of the dyed fur, and physically tested for the rub fastness of the dye.The highest value of rub fastness achieved by the dyed rabbit fur treated in 20 cubic centimetres of ammonium hydroxide in one litre of water. It advisable to use 20 cubic centimetres of ammonium hydroxide of 22 % strength in one litre of water as killing agent in rabbit fur dyeng process.