Rubber Processing

Rubber Processing
The raw material of rubber manufacture is crude or raw rubber in which various ingredients are incorporated to prepare a compound. This compound is brought into the desired frm and the finished products is obtained by vulcanization or cure.
Rubber articles are manufactured by several operations, the most important ones being as follws.
Physical treatment of the raw rubber makes it suitable for incorporation of compounding ingredients. This operation is called plasticization of mastication, which is carried out on a mill, in an interal mixer, or in a “plastlentor”----a highspeed screw extruding machine.
Incorporation of various substances especially fillers into rubber is called mixing, which is also effected on a mill or in an interal mixer.
Pretreatment of the mix to make it suitable for the preparation of the desired product may consist of calemdering, extrusion, impregnating or spreading, depending on the article to be made.
Forming the product to be manufactured consists. in general, of the use of a mold with the desired shape and dimension. This step is called molding.
Vulcanization or curing the molded article will give the rubber properties which will meet the specifications. This operation is carried out in an autoclave or press.

New Words and Expressions

1. raw 生的,未加工的,未训练的
2. raw material 原料
3. crude 天然的,未加工的,粗制的
4. bring into 引进,实现,产生
5. desire 要求,愿望
6. cure 硫化
7. several 几个,个别,单独
8. physical 物理的,体力的,自然的,物质的
9. plasticization 塑化,塑练
10. carry out 进行,执行
11. internal 内部的
12. mixer 混合器,开练机,密练机
13. internal mixer 密练机
14. plasticator 螺杆塑练机
15. screw 螺杆
16. pre- 预先
17. pretreatment 预加工,预处理
18. preparation 制备,准备
19. consist of 包括,由……组成
20. calender 压延
21. extrusion 压出
22. impregnate 浸渍,浸浆
23. spread 涂胶,刮胶
24. mold , mould 模型
25. dimension 尺寸
26. specification 规格,规定
27. autoclave 硫化罐
28. press 平板硫化机,压力,出版社,压力机