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Majalah Kulit, Karet, dan Plastik
ISSN : 18296971     EISSN : 24604461     DOI : 10.20543
Core Subject : Engineering,
Majalah Kulit, Karet, dan Plastik (Journal of Leather, Rubber, and Plastics) publishes original research focused on materials, processes, and waste management in the field of leather, rubber, and plastics.
Articles 781 Documents
Rancang bangun perekayasaan industri pipa pvc untuk saluran air minum Irene Sri Sukaeni; Arum Yuniari; Sri Brataningsih Puji Lestari
Majalah Kulit, Karet, dan Plastik Vol 12, No 23 (1997): 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 (1042.708 KB) | DOI: 10.20543/mkkp.v12i23.364

Abstract

The aim this research is to find out process of production and the relation between cost, sell price and percentage of break even point. Production of capacity produced is 345.600 pipes. The economical calculation are as follows: the total capital is fixed capital + working capital = Rp. 1.396.140.000,00; the total production cost is variable cost a year + fixed cost a year = Rp. 1.620.710.000,00. The manufacturing cost = Rp. 4.690.00/pipe, the profit calculation before taxing is Rp. 383.770.000.00 after taxing is Rp. 307.020.000,00 the pay out period calculation consist of the percentage of profit to return the capital (rate of return) before taxing is 27,49%, after taxing is 22,00% and the pay period before taxing 3 year, after taxing 3 year 7 month. The break even point is 51,44% and the capacity of break even point is 177.777 pipes. INTISARI Penelitian ini bertujuan untuk mengetahui proses produksi dan hubungan antara biaya, harga jual, dan persentase batas rugi laba. Kapasitas produksi direncanakan sebesar 1200 pipa per hari, sehingga  dalam 1 tahun dengan 288 hari kerja kapasitas yang dihasilkan 345.600 pipa. Dari analisa ekonomi diperoleh hasil sebagai berikut : Total modal yang terdiri dari modal tetap dan modal kerja = Rp. 1.396.140.000,00 biaya produksi yang terdiri dari biaya tidak tidak tetap 1 tahun dan biaya tetap 1 tahun = Rp 1.620.710.000,00. Harga pokok produksi = Rp 4.690,00/buah pipa, keuntungan sebelum pajak Rp 383.770.000,00 dan sesudah pajak Rp. 307.020.000,00/. Persen keuntungan untuk mengembalikan modal sebelum pajak = 27,49% dan sesudah pajak = 22,00%. Waktu pengembalian modal sebelum pajak = 3 tahun, sesudah pajak 3 tahun 7 bulan. Perhitungan nilai batas rugi laba = Rp 1.031.110.000,00 dan persentase batas rugi laba = 51,44% serta kapasitas batas rugi laba = 177.777 buah pipa.
Pembuatan kulit imitasi untuk atasan sepatu dengan variasi jumlah blowing agent ADCM Soepranoto Soepranoto
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 | Full PDF (2243.613 KB) | DOI: 10.20543/mkkp.v4i8.453

Abstract

Experiments of making PVC synthetic leather for shoe upper has been done by varying ADCM blowing agent and the temperature of the middle coat layer coating process.The composition used for each layer of the synthetic leather are :Top coat (part)            : PVC emulsion 100, DOP 70, Epoxy oil 3, VM 1700/5 stabilizer 5, CaCO3 filler 10, Stearic acid 1, Pigment 1.Middle coat (part)       : PVC emulsion 100, DOP 50, Epoxy oil 3, VM 1700/5 Stabilizer 5, CaCO3 filler 10, ADCM blowing agent 2 – 6, Activator (KK 42) 3, VS – 103 1.Base coat (part)          : PVC emulsion 100, Epoxy oil 3, VM 1700/5 Stabilizer 5.Temperature               : 150 – 1700 CVariationThe supporting material used in this coating process is flannel fabric. The product’re 25 kinds of synthetic leather with ± 1 mm thickness and had been tested for physical properties such as : tensile strength, elongation at break, tear strength, adhesion strength between plastic layer and supporting textile fabric, flexing and stitch tear strength.The optimum value of physical properties were achieved by the synthetic leather in which contain 6 parts of ADCM blowing agent, processed at 1650 C. it could  be graded into the specification of Indonesian Industri al Standard number SII 1645 – 85 : Synthetic leather for shoe uppers.
Teknologi yang diperlukan Indonesia Herman Johannes
Majalah Kulit, Karet, dan Plastik Vol 1, No 1 (1984): 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 (898.867 KB) | DOI: 10.20543/mkkp.v1i1.257

Abstract

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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. 
Kualitas udara disektor industri karung plastik Arum Yuniari; M. Sri Wahyuni; C. Yuwono Sumasto
Majalah Kulit, Karet, dan Plastik Vol 12, No 25 (1998): 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 (885.926 KB) | DOI: 10.20543/mkkp.v12i25.374

Abstract

Air pollution is generated by air pollutant in production. Raw materials used in the production of plastic corrugated sack are Polyethylene and Polypropylene. Polyethylene and Polypropylene yars are knitted to be various plastic knits such as plastic corrugated sacks. The result of this study shows that concentration of dust particles in processing area is 30 – 34 ugr/m3, and in finishing area is 38,6- 972 ugr/m3. The other gases such as Ox, SO2, H2S and NH3 are still low. The overage concentration of dust particle in ambient air is about 38,6 – 380 ugr/m3. However for parameter of Ox, SO2, H2S and NH3 seems stile low.  INTISARI Karung plastik merupakan salah satu bentuk pengemas yang sangat penting pada sektor industri. Peningkatan jumlah industri karung plastik memberikan dampak terhadap lingkungan sekitar. Terjadinya pencemaran udara dapat diakibatkan oleh gas buang yang dikeluarkan pada proses produksi.  Bahan baku yang dipakai dalam pembuatan karung plastic adalah Polietilen dan Polipropilen. Benang-benang plastic ditenun menjadi aneka tenun plastik, misalnya karung plastik. Hasil penelitian terhadap gas buang pada ruang proses produksi dan ruang finishing masih dibawah nilai ambang batas Hygyene Perusahaan dan Kesehatan Kerja. Konsentrasi udara dilingkungan sekitar yang melebihi ambang batas adalah parameter debu 0,344 – 0,380 mgr / m3. Untuk parameter Ox, SO2, H2, dan NH3 sudah memenuhi baku mutu Kep. 02/MENKLH/I/1988.
Pengaruh kadar air dalam kulit terhadap kuat rekatan lem Sofyan Karani; Suhadijono Suhadijono
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 (1345.787 KB) | DOI: 10.20543/mkkp.v6i10-11.463

Abstract

The objective of the research is to know the influence of Moisture in the leather to adhesive resistance of glue. The glue used is Aica Aibon, Herferin, Striot 275 and Rokoll Prima DX by dry air, subn light and dryong oven treatmrnt. The result od research the moisture in the leather up to 20% won’t influence the adhesive resistance of the glue, but it will influence the drying time of glue. Adhesive resistance optimum for 4 kinds of glue are between 0.427 0.568 kp/cm2 by pressuring 3 kg/cm2 and pressuring time 15 second
Pengaruh radiasi kopolimer dengan monomer metil metakrilat (MMA) pada lateks sebagai lem terhadap sifat kuat rekat Sri Nadilah; Penny Setyowati; Murwati Murwati
Majalah Kulit, Karet, dan Plastik Vol 12, No 25 (1998): 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 (748.602 KB) | DOI: 10.20543/mkkp.v12i25.379

Abstract

Vulcanizing process of copolymer radiation with methyl methacrylate monomer 75 (per hundred parts of rubbers) of natural latex was done, and to application like adhesive for rubber shoes. This research was centered to find the influence of radiation copolymerization process of methyl methacrylate monomer, with the methods to compare the peel strength with natural latex. Natural latex was copolymer radiation processed with methyl methyl methacrylate monomer 75 (per hundred parts of rubbers), the radiation doses 5 kGy have peel strength as adhesives on rubber shoe more than natural latex, and the result fulfill the requirements of SNI. 12. 0172-1987 “Super Kanvas Umum”.  INTISARI Proses vulkanisasi secara radiasi kopolimer dengan monomer metil metakrilat 75 psk (per seratus bagian berat karet) terhadap bahan lateks alam dan lateks alam iradiasi telah dilakukan, dan digunakan sebagai lem untuk sepatu kanvas. Titik berat penelitian ini adalah mencari pengaruh proses kopolimerisasi radiasi dengan monomer metil metakrilat dengan cara membandingkan sifat kuat rekatnya dengan lateks alam. Ternyata lateks yang diradiasi kopolimer dengan monomer metil metakrilat 75 psk dengan dosis radiasi 5 kGy mempunyai sifat kuat rekat yang lebih baik dan memenuhi persyaratan standar mutu SNI. 12. 0172-1987 “Sepatu Kanvas Umum”.
Penggunaan lemak fleshing industri penyamakan kulit untuk pembuatan sabun mandi Ignatius Sunaryo; Sri Sutyasmi; Widari Widari; Murwati Murwati
Majalah Kulit, Karet, dan Plastik Vol 18, No 1 (2002): 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 (2992.527 KB) | DOI: 10.20543/mkkp.v18i1.267

Abstract

An experimentation the Use of Fat from Fleshing of Leather Tanning Industry to Produce Bath Soap was aimed to use the fat from fleshing to gain the alternative source of basic material for bath soap, to assist the industry to solve the environmental pollution and increasing the population income. The point to be gained after finishing this experiment was to find out the problem solving of environmental pollution problem caused by fleshing from leather tanning industry. Goat/sheep fleshing from one of leather tannings in Yogyakarta was collected and had been used as a source of fat. Fat from fleshing was produced by 3 kinds of heating those were coocked, “kukus”, and steam. The results of fat analysis showed that the average of saphonification value was 201.01; free faty acid value was 0.86%; acid value was 1.72 and the unsaphonification fat value was 1.44%. The variations of fat used for bath soap manufacture were 55%, 60%, 65%, 70% and 75%; whereas the variations of sodium hydrokside were 11, 14, 17. 20 and 23, each of which was in parts. The result of this experiment showed that the fat from fleshing could be a source of fat and could be used for bath soap manufacture. In such way, it could be as a pollultion problem solving to the industry. The result of bath  soap analysis showed that almost all of the variations of fat and sodium hydrokside could meet the SNI 06-3532-1994 about bath soap. Economically point of view showed that the value of producing fat in various regions such as Jabotabek, West Java, Center Java, DIY and East would vary from Rp6,000,000,- to Rp.200,000,000,-; whereas the value of producing bath soap would vary from Rp 21,000,000,- - Rp 700,000,000,- Key words: fleshing, fat, soap, environment, tannery, waste management. 
Pengaruh waktu pencetakan kompon polipropilene untuk acuan sepatu Sunarso Hs; hernadi Surip
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 (1002.014 KB) | DOI: 10.20543/mkkp.v6i10-11.468

Abstract

Polypropylene is the most important polymer in poliolafine. In this study polypropylene is added with kaolin, in the batch, the varied time used for moulding was 13, 15, 17 19, and 21 minutes, while the temperature and pressure was 190 C, 150 kg/cm2.The porpuse of the varied time used is to detect how for the influence of time to words of hardness and impact resistance of polypropylene prepared for shoe last.It can be found from the result that time does not have influence on the impact resistance of polypylene compound used for shoe last, but the longer the time used the hardness will be decreased.The highest test result of hardness and impact resistance was achived by polypropylene compound which was moulded in 13 minutes (75,53 shore D, 2,5831 kg cm/cm).
Penelitian terapan sol karet cetak sesuai SNI. 12-0778-1989 sistim cetak tekan di industri kecil Cibaduyut Penny Setyowati; Any Setyaningsih; Budiwiyono Budiwiyono
Majalah Kulit, Karet, dan Plastik Vol 11, No 21 (1996): 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 (902.759 KB) | DOI: 10.20543/mkkp.v11i21.384

Abstract

The applaid research of rubber sole making in accordance with SNI.12-0778-1989 in the Cibaduyut small scale industri Bandung was conducted with the use of IRDLAI’s rubber compound formulation and the applica tion of the optimum vulcanization process condition that to be reached on trial. The physical test results to be evaluated with CRD methode proved not significant difference with the trial result in IRDLAI and fulfill SNI.12-0778-1989 “Moulding Rubber Sole”. INTISARI  Penelitian terapan pembuatan sol karet cetak sesuai SNI. 12-0778-1989 di Industri kecil Cibaduyut Bandung dilaksanakan dengan menggunakan kompon karet hasil formulasi BBKKP serta menerapkan kondisi proses vulkanisasi optimum yang dicapai pada percobaan pembuatan sol karet cetak di BBKKP. Adapun hasil uji fisisnya dianalisa statistik dengan metode CRD dan terbukti tidak berbeda nyata dengan uji fisis hasil percobaan di BBKKP serta memenuhi syarat SNI.12-0778-1989 “Sol Karet Cetak”.

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