Penentuan tipe minarex a yang optimum pada pembuatan kompon karet untuk sol karet cetak ditinjau dari sifat fisisnya

The objective of this research is to know type optimum of Minarex A to make rubber compound for rubber sole to orientate of physical characteristic. All compound with Minarex A type 2 and type 3 fulfil SNI. 0778 ? 89 A, rubber sole class A. the rubber compound with Minarex A type 3 for physical testing is tensile strength, elongation strength, hardness, permanent elongation 50% and abrasion resistance, better from Minarex A type 2. Exactly the rubber compound with Minarex A type 2 for physical testing is tearing resistance and specific gravity better from Minarex type 3. The optimal condition is reached by using Minarex A type 3.