Rotational Moulding Machine is widely used for manufacturing hollow plastic products. It is so versatile and is available on minimal cost as compared to other plastic manufacturing machines. This type of machine is used to produce different components and fittings that are also accessed for machinery, furniture, aircraft, home and garden purposes. Available in various shapes and sizes, this machine is used to rotomould chemical storage containers, and for a wide variety of applications. Rotational molding machine has numerous advantages over other molding processes. With decent design, parts assembled from various pieces, can be molded as one part, which apparently eliminate high fabrication costs. Like rotomoulding machine, the rotational moulding machine is categorized into many types and some of them include:
Clamshell Rotational moulding Machine: It is basically a single arm rotational moulding machine and is available in smaller scales for schools, those are interested for high quality models. It has single arm that is usually supported by other arms on both ends in order to heating and cooling the mold in the same chamber.
Carousel Rotational Moulding Machine: It is a very common type of machine that has up to 6 arms. It is capable of making different size molds, with different heating and thickness need. Available in a wide range of sizes, this machine is fabricated in two different models like fixed model and independent model.
Extrusion Molding: This process starts with raw plastics like powder, pellets, and beads. At first, the plastic will be fed to a revolving chamber. Then, the chamber that is also known as the extruder, will turn and melt the plastic. The melted plastic will be formed to the shape of you wish. Then, the final outcome is kept on the conveyer belt to be cooled with water. The next step is cutting and finishing procedure. The items which are generally made via extrusion are films, sheets, and also pipes.
Injection Molding: It is another useful process of molding. The principle utilized for this process is fundamentally the same as the extrusion. The raw plastic will be fed into the melting chamber with the help of a hopper. The difference is that the melted plastic is kept inside cold mold with high pressure. If the mold is cool, then the product will be cleaned and finished. The materials which are normally made through injection molding are,s bottle caps, butter containers, lawn furniture, and also toys.