Rubber sheet's material source

The origin of rubber and the composition of rubber sheets.

According to the literature, rubber balls have excellent elasticity. This makes the visiting Spaniards feel that they are attached by evil spirits. Rubber is also used as a strap for bolting wooden handles to stones or metal appliances, as well as fillers for handles.

Maya can use rubber to make shoes. Although Native Americans do not vulcanize rubber officially like modern people, they can still use organic matter to achieve similar effects. For example, mixing unprocessed emulsions into the sap of different varieties or the sap of some vines.

Some native people in Brazil use rubber to make waterproof cloth material. It has been said that the Portuguese brought these clothes back to the motherland, frightened the fellow countrymen, and they are accused of using witchcraft and being tried.

After the rubber was introduced into the UK, it was found that this material can effectively wipe off the traces left by the pencil. So now the words “rubber” is also used to describe the eraser in English. Interestingly, today's Americans only name them eraser, but rubber is used to describe condoms.

Natural rubber is the most commercially available rubber, which is come from trefoil tree. The trefoil tree secretes a lot of sap which is rich in rubber emulsion when it is hurt. In addition, fig trees and some plants of the family Euphorbiaceae can also supply rubber material.

Germany's rubber supply was cut off during the Second World War. So they try to obtain rubber from these plants, but later, changing to produce artificial rubber. Rubber tree originated in South America, but through artificial transplanting, there are now many rubber trees in Southeast Asia.

In fact, Asia has become the most important rubber source. Rubber made from Silver daisy can reduce its sensitivity. Other rubber-based materials Although more than half of the rubber material is artificial rubber, natural rubber is still important in some areas, such as the automotive and military industries.