Hot Injection Molding Will Make The Custom Plastic Pieces You Need

9 December 2015
 Categories: , Blog


When you need to have specific plastic parts for your business, you need to make sure that you find a company that can help you get what you need. Finding a company that can not only design the part you need but can also manufacture it will make creating your product much easier. One way that the company you are working with can create the plastic piece you need is use to hot injection molding. 

What Is Hot Injection Molding?

Hot injection molding involves melting plastic and then shooting that plastic into a specifically shaped mold. The mold can be very small or very large. It can be in just about any shape, depending on what is needed. 

What Is the Hot Injection Process?

Generally the hot injection molding process is all done by one machine. Inside that machine is a hopper that is filled with small plastic pellets. The reason that the plastic is in pellets is because it is easier to melt pellets than it is to melt down a huge hunk of plastic. Pellets can also be fed into the machine easier and will fill up the entire space of the hopper because they will move around as necessary. 

When the operator pushes a button, the machine takes some of those plastic pellets and subjects them to high heat. That then melts the plastic. The melted plastic is then injected into the mold. There are different kinds of molds that get used.

One kind is a two piece mold. In a mold like that, the plastic gets injected into one part of the mold and then the other part closes, finishing the mold. Another kind of mold is just one piece and the plastic just fills it up. 

Once the plastic is in the mold, it sits for a minute or two, long enough for the plastic to set into its new shape. The smaller the piece, the quicker it cools. Then it is ejected from the mold. Any excess plastic gets trimmed off the pieces and then is added into a waste bin so that it can be melted down and reused. 

If you need to have customized plastic pieces for a product that you produce or for machinery at your business, you want to make sure that you have a good source for it. Finding a company like Industrial Plastics & Paints that creates custom plastic objects means that you will have what you need for your business when you need it.