Natural Rubber (NR) is produced from latex or field coagulam obtained from rubber trees planted in plantations. The most important forms in which NR is processed and marketed are the following: Sheets, Crepes, Block rubber and Preserved Latex Concentrates. In India sheet rubber designated as RSS 1, RSS 2, RSS 3, RSS 4, RSS 5 are the most commonly produced and marketed. Block Rubber is designated in the grades of ISNR. |