This is a documentary video show you the process of making rubber, eraser in the factory. It help student erase their pencil made mistakes. At first it comes from tree, in South America they used a tree to make ball but later in Europe they found out this balls can remove the mark of pencil, and consequently the wood of that tree have this power to erase pencil mark. In the factory many other additives in addition to main material is used like vegetable oil, accelerator and color. The ingredients will be mixed and lead to a rotating arm, mill, then making a homogenously.
Categories: Autos and Vehicles , Business & Management, Documentary , Educational, Entertainment, News & Report, Science & Technology
Tags: How, does, it, made? Document, documentary, show, video, clip, show, discover, discovery, discoveries, eraser, rubber, erase, pencil, pen, pencil mark, mark, marks, south, America, square, squares, additive, additives, ad, sulfur, tree, Europe, raser, araser, eeaser, erasers, erasing, erasrer.