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134. The rotational plastic molding

Now more and more people talk the plastic molding. Now we introduce the rotational plastic molding to you . If you are interested it, you can read about below.

Rotational plastic molding is a popularly used process in the package design & development industry. A heated mold melts down high-density plastic - often polyethylene - forming a puddle. The mold is then slowly rotated over a period of time; meanwhile, the melted plastic sticks to the walls of the mold.

In one very classic scene, a grizzled old and jaded businessman offers the secret to success to Dustin Hoffman's character. That secret is then carefully whispered in one word in his ear and that word is Plastics. This is because they incorporate the absolute very latest plastics molding technology to make their incredible very affordable portable spas.

It's called rotational plastic molding and it is the means by which extremely large items can be molded from molten plastic. Up until this technology was developed, larger items had to be made from other types of plastic.

You have seen small durable plastic items such as toys before. These are made by an injection molding process and they are almost indestructible. However; molten plastic is difficult to form, so up until recent years only smaller items could be made with it. That is until rotational custom molds technology was developed.

Thus it can be seen, the plastic molding is very important for us. So we should know more things about it.