how do they make rubber?

Question

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Answer 1

Rubber is made from the sap of trees found in very warm climates. The sap is thickened in “Smoke Houses” and then formed into bundles.

http://www.pslc.ws/macrog/exp/rubber/bepisode/malay.htm

Answer 2

In the past, an acid was added to the latex to make the sap set like a jelly. The latex jelly was then flattened and rolled into sheets and hung out to dry by workers.

A way of making rubber stronger and more elastic was invented by and Charles Goodyear in 1839. His method was called vulcanising and it stopped rubber from perishing.

Liquid latex is now shipped to factories where the rubber is made by machines. It can be cloured and made into car tyres, gloves, hoses, balloons and many other things.

Rubber trees are native to tropical parts of South America and until the 1870's most rubber came from Brazil and other parts of South America. In Sir Henry Wickham took some seeds to England and grew seedlings. The rubber tree seedlings were later planted in large farms called plantations, in parts of South East Asia.


Rubber can also be made from chemicals found in petroleum. this is called synthetic rubber.

Answer 3

In the old days all rubber was natural and was made by processing sap gathered by slashing rubber trees, drying that sap and then working it into sheets that could be processed further.

Nowadays a lot of it is chemically produced using silicones and other materials that have superior properties to those of natural rubber.