innate rubber happen in the extracted sap , or latex , of a rubber tree diagram . The Para rubber tree , Hevea brasiliensis , is the most economically of import latex rootage . Latex is present in subway system - alike vessels within the gentle inner barque of this tree . There is no latex within the tree diagram ’s Sir Henry Wood or in its outer bark . rubber tree produce to a meridian of over 140 feet . The tree diagram is vulnerable to Robert Frost as low temperature make its rubber brittle .

History

Hevea is native to the Amazon rainforest where it grew exclusively until the late nineteenth hundred . In 1875 , British planter Henry Wickham smuggle the tree ’s seeds from Brazil to Kew Gardens , London where they germinated into seedlings . British planters demand the seedlings to colonial woodlet in Ceylon ( Sri Lanka ) and Singapore where they recrudesce the rubber tap process . The Brazilian and Peruvian rubber industries could not vie with East Asiatic product and founder , except for fellowship smallholding . Southeast Asia now accounts for 95 percent of the world ’s rubber supply .

Tapping

The rubber tapper begin by making an devious incision into the tree and shave off a flimsy paring of bark . The stinger lop the latex vessels , allowing the latex to flow down the cut in the barque . It collects in a cup attached to the tree diagram beneath the excision . Flow ceases after a few hours as the latex coagulates at the bottom of the severed vessel . The tapper repeats the process every two or three days , progressively moving the cut down the tree trunk .

Tree Preservation

Certain varieties of caoutchouc Sir Herbert Beerbohm Tree , such as the Guayule bush , contain synthetic rubber within the tree ’s stalk . Rubber extraction involves cutting down the tree and crunch the wood . The advantage of tapping latex is that it preserves the tree diagram for next galosh production as well as rainforest conservation .

Sap Recharging

The Hevea Sir Herbert Beerbohm Tree has a growth life-time of up to 30 age and an economical ( latex paint output ) life-time of up to 25 age . It continues to produce throughout the tapping process and produce new latex paint to recharge its vessel . As a upshot , the tree ’s economic advantage is that it yields more rubber during one year of tapping than its entire rubber content at any one metre .

References

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