The Plastic Molding Process What You Need To Know

August 29, 2016 by - Custom roto molding, Laundry cart on wheels, Plastic molding

Plastic molding

Plastic is something that most us use on a regular basis on this day and age. In many ways we’re almost dependent on plastic. Some things we use can only be made with plastic. For other people, plastic is a preferable alternative to other materials due to its cheapness and flexibility. Unlike certain other materials, plastic can be easily molded and shaped into various forms. Its flexibility also means that those manufacturing plastic items can produce a large number of items in a short amount of time. This is just one of many reasons why plastic is a valuable item. With that being said, many of us still do not know the process behind making certain plastic objects. Plastic molding is not as easy as some people might think. Yet many different products can be created through the process of plastic molding — and we’ll look into that as well. The more knowledgeable people are about plastic molding manufacturers, the more they can make informed decisions as consumers; and should you be interested in producing products through plastic molding, perhaps you can make an informed decision about the manufacturers you choose to make your products.

Plastic Molding: What Is It, Anyway?

Many of us can’t name a single plastic molding company, let alone describe the process on our own. However, it’s not too difficult to understand if you try. There are two different types of rotational molding machines used commonly — independent-arm or fixed-arm turret machines. Essentially, in this process plastic is injected into a mold. A number of different materials can be used in this process, including glasses, elastomers, and confections. But of course, what we’re focusing on here is plastic. When creating a part or product, plastic is fed into a heated barrel, mixed in whatever way is necessary, and forced into a mold cavity. There, it cools and hardens in accordance with the configuration of the cavity. While this process occurs, the oven is preheated through convection, conduction, or at times radiation to temperatures ranging from 500 degrees Fahrenheit to -700 degrees Fahrenheit. This depends on the polymer used. The mold is rotated, at a slow rate of less than 20 rotations per minute. Process timing is critical during this phase. The nature of this process means that a large number of identical products can be created in a short amount of time. This is not only convenient — it can also potentially cut down on costs.

Plastic Products: What Can Be Made Through The Molding Process?

Again, there are many different products which can be made through this process. Many of them are parts, made to perform particular functions. Some are also prototypes. But there is more that can be made through the plastic molding process. These include practical products like rolling laundry carts. Plastic pallets and plastic lockers can also be made through the process. Many of these products benefit from the flexible nature of plastic, as well as the general availability of it. This is one of the reasons why plastic lockers are preferable to metal ones. While metal lockers are also available to many, others find plastic versions preferable simply due to the comparative lack of expense. But with that being said, the mass production is perhaps even more of a reason why so many depend on plastic molding manufacturers. Think, for example, of how much businesses and for that matter homeowners need linen carts. There’s a high demand for these practical products, and the plastic molding process is one of the few that can create a large amount of identical products in a short amount of time.

Now that you know more about the plastic molding process, perhaps you can better appreciate the work that goes into creating the tools and products we often take for granted. Plastic may be inexpensive, but without this important process, it can’t become what it needs to be.



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