橡胶加工技术 橡胶加工技术 The Story Of Natural Rubber Production.docVIP

The Story Of Natural Rubber Production The plantation rubber tree is a factory, specifically designed to produce as much latex as possible. To this end it can be considered to consist of three parts: the roots to take up sustenance根部汲取营养 the trunk to provide a good ‘storage and distribution centre’树干提供良好的储存和分配中心 the canopy to provide a high rate of biosynthesis. 树冠使生物合成作用的速度加快 Modern trees are often a ‘three part tree’ with these three parts grafted together from seedlings苗 of plants which excel in each particular area. After a short time growing in pots陶盆 the three part trees are planted out in a nursery苗圃before finally being transplanted 移植into the plantation. 种植园 ?They are allowed to grow for about six years and then it becomes cost effective经济效益to tap them. 割开…取液体 Tapping is the name given to the removing of a thin sliver薄长条of bark树皮so that the latex can flow rather like blood from a graze擦伤on the skin. The orange panel面in the picture opposite is the ‘tapping panel’ which slowly moves down the tree as successive tappings are carried out. Tapping takes place in the early morning, before the real heat of the day (so it is dark!). It usually takes place every day or every other day. ?For a few hours the latex flows from the ‘grazed’ trunk树干, runs down the gradient坡度of the sloping倾斜的panel to a vertical cut竖向缺口and then to a metal spike金属棒which sticks out of插入, 刺入, 卡住the tree and allows the latex to drip into the collecting cup. Eventually the flow stops as the wound heals and the flow stops. ?Later that day the tapper goes round his/her allocated trees to collect the latex in a pail. 桶;提桶 The pails are then filtered and bulked into drums 圆桶after which they are taken by lorry运货汽车to the processing centre. ?At this point the latex can be treated in several ways: The first process described is the making of ‘ribbed smoked sheet’ (RSS) which was very popular until the mid 1960’s but is still used to a lesser extent today. On a small scale, at the smallholders or a co-o