More about Strong Plastic Chairs:
Plastic chairs are made in a variety of ways. One way is using the Rotational molding with metal molds which are carved into the right design or desired shape with a plastic polymer powder.
This plastic polymer powder is then heated to the right melting point which turns the mold mechanically into a 3-dimensional shape.
Injection molding is when a metal mold is used, but this time the outcome is not an empty space or hollow but filled with solid plastic. With this type of mold, there is not spin. Heat is applied to the polymers at the desired temperature rate. Then the heated plastic is poured into the mold and cooled.
Injection molding is done with the help of gas which is blown at a very high velocity inside the mold pushing the molten plastic out of certain parts of the mold to create channels in the plastic to achieve the desired mold.