Check These Quick Techniques Of Plastic Molding!

Check These Quick Techniques Of Plastic Molding!

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Plastic molding started somewhere in 1800s. For the uninitiated, plastic molding is the technique of making plastic parts using one of the several techniques that are available, such as injection molding, roto molding, and blow molding. Below are some of the relevant facts related to injection molding and rotomolding – two more popular techniques for making plastic parts. You can also click here for more information on molding.

Rotational Molding

Otherwise known as rotomolding, Rotational Molding is a newer way of producing strong, durable and hollow plastic parts without escalating the making costs. The process involves using some kind of liquid resin or powder into a metal mold, which is then rotated in an oven until the resin has coated the entire inner surface of the mold. The use of heat and constant rotation allows the products to have uniform parts, and once the mold has cooled down, the final product is taken out. Rotational Molding is useful because it doesn’t involve material wastage, and remainder material can be reused again. Rotational Molding is ideal for making storage tanks, manholes, precision toys, and recycle bins. The tooling costs are much lower, and at the same time, the labor hours and production time can be minimized.

Injection Molding

Injection Molding is also used for making custom plastic parts, but the process is a tad different. In the case of Injection Molding, molten material is injected into the mold at a high pressure. Later, when the mold has cooled, the product is taken out. Injection molding is more useful for making larger orders. The tooling costs are high, which is why smaller orders may cost more. Many of the injection molds are made of aluminum and steel and can cost quite high. This is the precise reason why Injection molding is only used for larger orders and frequent production needs.

You may also come across something known as blow molding, which is more used for making custom plastic parts with thin walls. This works better when you need products with uniform wall thickness. The plastic is blown into a special mold, which then takes the shape of the mold. Once the balloon has taken the required shape, it is cooled and hardened down and the part is taken out. However, this is again more ideal for larger orders. With rotomolding, you can produce similar parts in smaller orders for a much lower price.

Check online now to know more on roto molding benefits.

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