Plastic is material consisting of any of a wide range of synthetic or semi-synthetic organic compounds that are malleable and so can be molded into solid objects.
One of the most common plastic manufacturing methods, injection molding lends itself to mass production of products ranging from cell phone stands to toys. The injection molding process melts resin pellets inside the injection machine with a heated barrel. An auger moves the plastic forward and ensures an even mix of melted plastic. The machine then drives the melted plastic into a metal mold. The plastic fills the mold and results in a solid plastic part or product. Most injection molding processes employ thermoplastics that you can melt and cool multiple times, which limits material waste.