Natural Rubber (NR) is produced from latex obtained from rubber trees in plantations. The most important forms in which NR is processed are the following: Sheets, Crepes, Block Rubber and Preserved Latex Concentrates.
Natural rubber (NR) processed into blocks adopting a new processing techniques is a notable improvement in the presentation of dry natural rubber. In India , block rubber is marketed with BIS specifications (IS4588 - 1986) and therefore, this rubber is termed as Indian Standard Natural Rubber (ISNR).
Two types of Sheet Rubber are produced and marketed in the international market, namely the Ribbed Smoked Sheets (RSS) and the Air Dried Sheets (ADS). Among these two types, Ribbed Smoked Sheet is the most popular and is available for consumption. There exist different grades of Ribbed Smoked Sheets rubber, namely RSS IX, RSS 1, RSS 2, RSS 3, RSS 4 and RSS 5.
| Conventional Grades of Ribbed Smoked Sheets |
Used for the manufacturing |
Equivalent ISNR (TSR) grades (which could replace conventional grades) |
RSS - 1X |
Aero tyres |
ISNR - 3L |
PLC - 1X |
Injection bottle caps etc. |
ISNR - 3CV |
RSS - 1 |
Tubes (NR) |
ISNR - 5 |
PLC |
Food Conveyer Belts etc. |
ISNR - 5 |
RSS - 2 |
Extruded hoses, Quality Footwear items |
ISNR - 10 |
RSS - 3, RSS - 4 |
Tyres & Tubes, Tread Carcass, Off road tyres & ADV tyres, Extruded hoses, Footwear |
ISNR - 10, ISNR - 20 |
RSS - 5 |
Cheap items, hand - made hoses |
ISNR - 50 |
EBC |
Cycle tyres, Footwear etc. |
ISNR - 50 |
Technically Specified Crepe Rubber |
Medical, Engineering, Retreading, Automobile and Footwear |
ISNR - 5 & ISNR - 3 |
Though Synthetic Rubber (SR) varieties have become available, demand for Natural Rubber (NR) always remains high.
Following are some end products made from Natural Rubber.
- Tyre
- Conveyer Belts
- Rubber Mats
- Automotive Parts
- Rubber Intermediate
- Adhesive
- Coating Material
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- Surgical Gloves
- Condoms
- Industrial Gloves
- Baloon
- Elastic Thread
- Rubber Foam
- Coir Foam
- Carpet Backing
- Rubber Bands
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