Plastic recycling

Lots of good info! Lots of research went into it none
Plastic Recycling
There are many methods for making materials that are dubbed plastic. Many different chemicals, most are petroleum based, are used for making plastic. A short history and a summary of some of the many methods of producing plastic pieces is given below. (plasticmatrix)
Although plastics have been around for centuries, the processing of man-made varieties is a relatively modern phenomenon. The first injection-molding machine was patented in the 1870's and together with profile extrusion, came into common commercial usag…