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Majalah Kulit, Karet, dan Plastik

MKKP
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Published by Kementerian Perindustrian Republik Indonesia

ISSN : 18296971 EISSN : 24604461 DOI : 10.20543

Core Subject : Engineering,

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.

Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur

Articles 781 Documents

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Influence of some mechanical finishing processes on manufactured leather properties Ahmed Ibrahim Nasr
Majalah Kulit, Karet, dan Plastik Vol 33, No 2 (2017): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The objective of this study is to investigate the influence of using some mechanical finishing processes on final properties of produced leather types. Nappa, nubuck, pigmented and corrected grain leather types were produced by applying some of the following operations: hang drying, vacuum drying, molissa staking, drum milling, buffing, spraying and/or embossing surface with extreme pressure. Hydrophobic-hydrophilic status, scanning electron micrographs, organoleptic and mechanical properties were determined on all finished leather types. Results showed that water behavior was hydrophobic for nappa leathers, while it was hydrophilic with the rest of produced leather types. Buffing surface in nubuck leather increases the water absorption and water vapor permeability, while the opposite was found when applying external coat layer in pigmented and corrected grain leathers. Applying vacuum drying in nappa leathers increases surface smoothness and surface water contact angle while decreases tensile and tearing strengths. These results elucidate that all studied leather types are suitable for manufacturing purposes except nubuck leather which is not recommended for footwear uppers manufacturing due to its high water absorption. The present study emphasized that while mechanical finishing processes could have profound effects on leathers surface behavior, they must be adequate to the requirements and properties of the end products.

Pelapisan aksesoris logam untuk produk kulit menggunakan resin akrilat Agustin Suraswati; Suprapto Suprapto
Majalah Kulit, Karet, dan Plastik Vol 19, No 1 (2003): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The aim of the research is to aquire an appropriate plating technique on leather product accessories made from metal without lessening the wonderful appearance of the accessories, to maintain the shade and to keep the rust away from the accessories that avoid or diminish defects on the leather. The plating was carried out by spraying using spraying-gun one, two, and three times, and repeated three times for each treatment to chrome plated metal, gold plated metal and roasted metal. The smaples were then pinned on a piece of chrome tanning leather and vegetable tanned leather, whereas the test carried out was wet and dry rub fastness. Data from completely randomized design are analyzed by factorial pattern according to Gasperz (1991), showed that there was not significant effect on plating neither metal on chrome and vegetable tanned leather having been stored for one, two, or three months, neither on similar things having not been stored yet. However there was significant difference on accessories having been do treated as the stated above and set on a piece of vegetable tanned leather stored for three months. Conclusion could be drawn from the research that the use of acrylate using spray system for plating metal accessories was able to maintain its beautiful appearance, kept the rust away, that was not create defects neither on chrome nor vegetable tanned leather. Keywords : plating, leather product, metal accessories, acrylate.

MKKP Vol. 32 No. 1 (2016) Reviewer Acknowledgement Arum Yuniari
Majalah Kulit, Karet, dan Plastik Vol 32, No 1 (2016): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Penelitian pemanfaatan paraffinic oil sebagai plasticizer untuk sifat tegangan putus, perpanjangan putus dan ketahanan kikis rol karet gilingan padi Any Setyaningsih
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

This research aims to know how much maximum paraffinic oil as plasticizer which may be added to rubber roll for rice mill. The physical properties of the rubber roll compound is tested about its tensile strength, elongation at break and abrasion resistence suit to SII 1902-86. Paraffinic oil as plasticizer which fulfil a condition suit to the SII 1902-86 are paraffinic P 60 type 2, paraffinic P 60 tipe 3 and paraffinic P 95 type 2 with amount each 5 parts. INTISARIPenelitian ini bertujuan untuk mengetahui jumlah maksimum paraffinic oil sebagai plasticizer yang dapat ditambahkan pada rol karet gilingan padi. Komponen rol karet gilingan padi diuji sifat – sifat fisiknya yaitu : teganggan putus, perpanjangan putus dan ketahanan kikis sesuai SII 1902-86. Paraffinic oil sebagai plasticizer yang memenuhi persyaratan SII 1902-86, yaitu : paraffinic P 60 tipe 2, paraffinic P 60 tipe 3, dan paraffinic P 95 tipe 2 dengan jumlah masing-masing 5 bagian.

Pembuatan gas methane dari limbah padat penyamakan kulit Prayitno Prayitno
Majalah Kulit, Karet, dan Plastik Vol 12, No 22 (1996): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Leather tanning industry is one of the industry which potentially causes environmental problem. For processing, a lot of water and chemical are used, generates a lot of liquid waste, which are powerful pollution in water an in soil. There will also be animal residues from such operation as cleaning, fleshing, splitting and trimming. Each of these generates solid waste which must be disposed. It is a big problem for handling the solid waste because of their volume and highly odours when they decompose in their solid form. Untanned solid waste and liquid waste generated in the tanning process have a high organic content (protein and fats) and their humidity …. are such that they are readily degradated by methane fermentation. ABSTRAK Industri penyamak kulit adalah salah satu industri yang sangat potensial menyebabkan problem lingkungan. Dalam prosesnya diperlukan banyak air dan bahan kimia yang akan menjadi limbah cair yang dapat menyebabkan terjadinya pencemaran air atau masuk dalam tanah. Juga sisa-sisa dari proses pencucian, fleshing, splitting dan trimming akan menghasilkan limbah padat. Untuk menangani limbah padat banyak menimbulkan permasalahan karena volume yang cukup besar dan bau yang ditimbulkan. Limbah tak tersamak dan limbah ciar yang diperoleh dalam proses penyamakan mempunyai kandungan bahan organic yang cukup tinggi (protein dan lemak) dan juga kandungan air yang cukup sehingga memungkinkan untuk didegradasi dengan cara fermentasi methane.

Penggunaan ekstrak kayu nangka (artocarpus heterophyllus) sebagai bahan pewarna untuk kulit Emiliana Kasmudjiastuti; 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). INTISARI 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 nilai pada skala grey scale tetapi ketahanan terhadap asam sulfat dan asam formiat kurang baik (nilai 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.

Utilization of poly(methyl methacrylate) rejection blended with acrylonitrile butadiene styrene resins and the effect on product properties Achmad Hanafi Setiawan; Achmad Nandang Roziafanto
Majalah Kulit, Karet, dan Plastik Vol 32, No 2 (2016): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

PMMA is one of the main raw materials for the injection molding process in the lens industries. Since this process requires extremely careful techniques to obtain lens with the best quality, it leads to a high rate of product rejection. These rejected products do not only pose an issue for the industrial environment and require storage space, their price also falls significantly. Among the solutions to this problem is to reuse the rejected products as substitute materials for the manufacture of another product’s part such as lamp holders. This process reuses rejected PMMA-containing products in the ABS base polymer industries so as to generate PMMA-containing products with better physical properties. In this experiment, 10 to 40 % (w/w) of rejected PMMA was blended with ABS resins. The monomer content in the ABS resins was analyzed by NMR. Moreover, the mechanical, thermal, and morphological properties of the blended products were also examined. The NMR analysis showed that the resin contained 21.6 % butadiene monomer, in which its value was higher than the value required for materials with high-impact class application. The blend of resins and rejected PMMA (10-30% w/w) could increase the tensile strength value and decrease Izod impact strength and elongation percentage. The morphological analysis showed that this increased PMMA content may also result in widespread brittle areas. Since the blend was designed without compatibilizers, the DSC analysis indicated that the resulting blend in any ratios was not completely miscible. It was revealed that ABS resins containing 10% PMMA was the best blend for the polymer engineering application and this blend still had adequate properties and elastomer content required.Keywords: ABS, blending, properties, PMMA regrind.

Leather specification according IULTCS part II, Continuation and discussion Koentoro Soebijarso
Majalah Kulit, Karet, dan Plastik Vol 10, No 19 (1995): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

This Part II publication of Leather Specification According IULTSC (the International Union of Leather Technologists and Chemists Societies), is the continuation of Part I edition, in the bulletin “Sain dan Teknologi Kulit” ISSN : 0853-3660, no.2 th.II, Desember 1991. In this publication the writer will concentrate on the specification of shoe uppers, lining and upholstery leather. At the end of this publication a discussion on IULTCS specification and IUF, IUP, IUC, etc. test methods for the benefit of the Government, tanners and scientists will be conducted. This is to consider the existing Indonesian Industrial Standard that already adopted as Indonesian Nasional Standard.

Penelitian pengaruh kekerasan kompon sol karet sepatu kanvas dengan daya rekat lem A Buchori; Luciawati Sunarjo
Majalah Kulit, Karet, dan Plastik Vol 12, No 22 (1996): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The objective of the research is to know the influence of the hardness compound rubber sole for canvas shoes by cemented resistant. Rubber sole compound is made from natural rubber (pale crepe) with the addition of ingredient such as : softener, activator, anti oxidant, filler, accelerator and vulcanizing agent. The result of rubber sole is : A, B, C, D, E, F compound with the hardness test : 52, 53, 54, 55, 56 and 57 Shore A. After sole is roughed, than sole and canvas upper shoes is laminated by cement, after 3 minute than the joint is done by pressing it with varying pressure : 10, 20 and 30 kg/cm2 along 15 sec. then it should be tested their cemented resistant. The test is actually able to fulfill the specification of SNI 12-0171-1987 “Sepatu Kanvas Dengan Sol Karet Untuk Olah Raga”. The best tested of the hardness 53 Shore A (compound B) the value : 21, 2259 N / 6 mm. INTISARI Penelitian ini bertujuan untuk mengetahui pengaruh kekerasan kompon sol karet sepatu kanvas dengan daya rekat lem. Kompon sol karet yang digunakan dibuat dan karet alam (Pale Crepe) dengan ditambah bahan pembantu (ingredient) seperti : bahan pelunak, pengaktif, anti oksidan, pengisi, pencepat dan zat pemvulkanisasi. Hasil sol karet adalah kompon A, B, C, D, E, F dengan hasil uji kekerasan : 52 , 53, 54, 55, 56, dan 57 Shore A. setelah sol dikasarkan kemudian sol dan atasan sepatu kanvas diulas dengan lem, setelah 3 menit kemudian dilakukan penggabungan dengan dipres menggunakan variasi tekanan : 10, 20 dan 30 kg / cm2, selama 15 detik, kemudian diuji ketahanan rekatnya. Hasil uji memenuhi persyaratan SNI 12 – 0171-1987 “Sepatu Kanvas Dengan Sol Karet Untuk Olah Raga”. Hasil uji terbaik dengan kekerasan : 53 Shore A (kompon B) dengan nilai : 21, 2259 N /6 mm.

Penelitian pengaruh perbandingan rss dengan SBR dan PBN terhadap ketahanan sobek dan kekerasan kompon talang karet Asrilah Asrilah; Siti Rochani
Majalah Kulit, Karet, dan Plastik Vol 10, No 20 (1995): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The objective of this research is to know the influence variation in application RSS, SBR and PBN of Rubber gutter Compound to physical properties in tear resistance and hardness. Rubber gutter Compound is made from natural Rubber (RSS) wich be mixed by sintetics Rubber (RSS) and addition of ingredients such as : softener, activator filler antioxidant, accelerator and vulcanizing agent. It should be carried out using base formula by varying RSS/SBR 40/ 60; 50/50; 60;40 part and PBN 1; 1,5 and 2 part. Statistically prove that variation in application RSS/SBR and PBN influenced physical properties of the result test. The application RSS/SBR 60/40 part PBN 1,5 part will give the best compound with the tear resistance 11,05N/mm2 and hardness 72,33 Shore A. INTISARI Penelitian ini bertujuan untuk mengetahui pengaruh RSS dengan SBR dan PBN terhadap ketahan sobek dan kekrasan kompon talang karet. Kompon talang karet dibuat dari karet alam dan karet sintetis dengan ditambahkan bahan- bahan pembantu seperti bahan pelunak, pengaktif, pengisi anti oksidan, pencepat, dan zat pemvulkanisasi. Pembuatan kompon tersebut dikerjakan dengan formulasi sebagai berikut : RSS/SBR : 40/60; 50/50; 60/40 bagian PBN : 1; 1,5 ; 2 bagian. Setelah diuji ternyata secara perhitungan statistik variasi penggunaan RSS/SBR 60/40 bagian PBN berpengaruh terhadap sifat-sifat fisis kompon tersebut. Kompon yang paling baik sifat-sifat fisisnya adalah kompon yang menggunakan RSS/SBR 60/40 bagian dari PBN 1,5 bagian dengan hasil uji ketahanan sobek 11,05N/mm2 dan kekerasan 172,33 Shore A.

Page 39 of 79 | Total Record : 781

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