Karet Alam Natural Rubber

PT Rimba Karet

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South East Asia

70% rubber production in the world produced in Indonesia, Malaysia, and Thailand from Rubber Tree Hevea Brasileinsis. The use of rubber is widespread, ranging from household to industrial products, entering the production stream at the intermediate stage or as final products. Tires and tubes are the largest consumers of rubber. The remaining 44% are taken up by the general rubber goods (GRG) sector, which includes all products except tires and tubes.

Types of Processed Rubber

Crepes is made from Latex or newly sapped liquid rubber. Production process similar like Ribbed Smoked Sheet. However there is additional step to bleach the brown color from Rubber, the bleached rubber is being process to become sheet in milling machine

Latex is newly sapped liquid rubber that being mixed with Ammonia. Usually the dried Rubber content of newly sapped liquid rubber is around 25-29%. Later on the rubber content can be increased to 60% using centrifugal machine. The end product is called centrifuged latex. In centrifugal machine, other component of rubber like serum, water is being reduced to increase the rubber content

RSS: Ribbed Smoked Sheet is from latex that has been coagulated using acid, milled, then  heated in smoked house. After being heated in smoked house. Ribbed smoked Sheet rubber is used mainly for rubber production and pipe for machinery.

TSR: Technical Specified Rubber: processed rubber using heavy machinery. The final result can also be named as block rubber using huge amount of electricity, different countries have different name and standard for their TSR; SMR (Standard Malaysian Rubber); SSR (Standard Singapore Rubber);  SIR (Standard Indonesian Rubber); TTR (Thai Tested Rubber)

  Variety Species of Rubber Trees

Hevea Brasiliensis: Popular as Natural rubber that being sold from Brazil

Palaguium gatta Origin from Malaysia— Waterphilic—used as underwater pipe and synthetic resin

Dyera Costulata Origin Malaysia — main material for gum candy and adhesive for fashion belt

Accacia senegal Origin West Coast Africa—easy to dissolve in water — Used to make ink, stamp adhesive, and medicine tablet

Funtumia elastic Origin West Coast Africa—the resin similar like Hevea Brasiliensis, many planted in south east asia, the color of the rubber is transparent—contrast to heavy brown color rubber from Hevea Brasiliensis



Uses in Industry

There are two types of rubber: natural rubber extracted from rubber trees and a synthetic rubber made from petroleum derivatives. Use a combination of both are widely used to make tires, hoses, cables and insulators. For example, in tires used in the composition of 45% and 55% synthetic rubber, natural rubber.

Due to the manufacture of synthetic rubber base material using petroleum, crude oil prices pushed up the price of synthetic rubber. Synthetic rubber and natural rubber are complementary goods, which means that both must be used simultaneously, because it increases the price of synthetic rubber also trigger rising prices of natural rubber. Indirectly, the increase in crude oil will trigger an increase in natural rubber prices


History of Synthetic Rubber Click Here

History of Rubber Plantation Click Here

Disease on Rubber Plant Click Here