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The trees drip latex for about four hours, stopping as latex coagulates naturally on the tapping cut, thus blocking the latex tubes in the bark. Tappers usually rest and have a meal after finishing their tapping work and then start collecting the liquid "field latex" at about midday.
Rubber tapping is the process by which latex is collected from a rubber tree. The latex is harvested by slicing a groove into the bark of the tree at a depth of one-quarter inch (6.4 mm) with a hooked knife and peeling back the bark. Trees must be approximately six years old and six inches (150 mm) in diameter in order to be tapped for latex.
Palaquium gutta. Gutta-percha is a tree of the genus Palaquium in the family Sapotaceae, which is primarily used to create a high-quality latex of the same name. The material is rigid, naturally biologically inert, resilient, electrically nonconductive, and thermoplastic, most commonly sourced from Palaquium gutta; it is a polymer of isoprene which forms a rubber-like elastomer.
Hevea brasiliensis, the Pará rubber tree, sharinga tree, seringueira, or most commonly, rubber tree or rubber plant, is a flowering plant belonging to the spurge family, Euphorbiaceae, originally native to the Amazon basin, but is now pantropical in distribution due to introductions.
This latex was formerly used to make rubber, [2] but it should not be confused with the Pará rubber tree (Hevea brasiliensis), the sap of which is the main commercial source of latex for rubber making. The latex of Ficus elastica has been tested for use in the manufacture of rubber, but without economic and technical results. [citation needed]
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It was the principal source of latex among the Mesoamerican peoples in pre-Columbian times. The latex gathered from Castilla elastica was converted into usable rubber by mixing the latex with the juice of the morning glory species Ipomoea alba which, conveniently, is typically found in the wild as a vine climbing Castilla elastica .
They replaced native trees, including those with medicinal or ritualistic value such as the sasswood, red ironwood, and Cassipourea firestoneana trees, with meticulously arranged rows of rubber trees. [39] Tapping operations commenced shortly thereafter, and by 1940, Firestone had achieved a production of over 7,000 tons of latex per year. [40]