Plastics have the property to be shaped into many forms with the help of
different types of processes such as molding, casting, extrusion,
calendaring, laminating, foaming and thermoforming. There are many types
of plastic molding processes.
Of the various processes used for molding, Injection molding is amongst
the most important ones. It is an extremely versatile process that is
used for producing a wide range of simple or complex plastic parts -
economically and with a good finish. Injection molding is accomplished
by injecting melted plastic into a mold. The molded shape produced is a
reverse image of the mold tool.
The Plastic injection molding machine has two parts:
- An injection unit, which melts the plastic and injects the
plastic into the mold
- The clamping unit which holds the mold. The injection molding
unit clamps the mold in a closed position during injection, opens
the mold after cooling and ejects the finished part.
Plastic Injection molding is mainly used for producing complex
shapes of various sizes having very fine details. The parts produced by
using this method have greater dimensional control and can produce the
products in bulk.
Plastic Injection molding process's efficiency varies by the number of
parts you plan to produce. For a small quantity, such as 10 parts, it
may be less expensive to simply machine the desired part utilizing a CNC
milling machine. On the other hand, if several thousand parts have to be
made, injection molding is ideal.
Some of the materials that are best suited for producing parts
using Plastic Injection Molding are:
- ABS Acrylic Polycarbonate
- High Density Polyethylene
- Polyvinyle chloride
- Acetal Polyamide
- Low Density Polyethylene
- Polypropylene Filled and Blended Plastics
Plastic Injection Molding Machine
