Looking for rotational molding alternatives in Tennessee? Want affordable custom plastic molding that is cost effective for Fayetteville area? Then give us a call at our toll free number 866-971-7861 or request a quote today!

rotational molding-Fayetteville-Rotational molding pertains to a plastic production technique that creates hollow stress-free products. The procedure utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have many different shapes, sizes and colors. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The attribute that makes this different from other plastic manufacturing processes in that no pressure is called for. It also has few rivals when it comes to the creation of large size hollow products which are long-lasting and inexpensive.There is a wide range of products that are developed by this process including large water tanks, automobile materials, intricate shaped medical items, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in terms of style and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Fayetteville TN 37334, it is a cheaper way of making plastics. This is because apart from the fact that no pressure is required, the cost of mold preparation is low.
  • A wide array of design options.
    There is no limit to the kind of design one may want to create. The roto-molding process therefore allows for the manufacturing of products that have complex shapes for different purposes.
  • Size.
    The process provides room for the manufacturing of products of any size, large or small. As mentioned earlier, it has few competitors when it comes to the making of large tanks at low costs.
  • Low risk.
    Due to the low costs of creating a mould, the process allows for test runs before one can decide whether to do mass production. It therefore minimizes the risk of losing a lot of investment.
  • Durable products.
    The process allows for even coating of the mould with the heated polymer, giving the product a wall with uniform thickness. It also gives the option of double coating for increased durability. Sometimes metal inserts are placed inside the mould to further strengthen the product.
  • Environmentally friendly.
    There is no waste that could have a negative impact on the environment because the products that cannot be used are reground and reused as polymer.

Examples of Products Made by Rotational Molding

Plastic Manufacturing-Fayetteville-Rotocasting is a very versatile process, making it possible to create a variety of products for different industries.

  • Agricultural industry– From cattle feeders, water troughs, spray tanks etc.
  • Automotive industry– Filler tubes, dash boards, arm rests, sun visors, air conditioner duct work etc.
  • Furniture– We have plastic cabinets, chairs and tables made from this form of moulding.

There are numerous Tennessee plastic products also that have been made for the marine industry, lighting, waste storage and transportation, kayaks etc.

Few Disadvantages – There are nominal disadvantages that have been associated with rotocasting. For instance:

  • – The process is relatively slow when compared to injection moulding.
  • – There is a limitation when it comes to the type of raw material you can use. Only poly based and nylon polymers can be used.
  • – The process comes with an increased cost because the polymer has to be ground to powder form before use.
    These limitations are often overlooked considering that the process is still relatively cheap and offers more in terms of variety when it comes to the finished range of products.

Remember – There are new developments and discoveries that are being made as the world of plastic manufacturing in Fayetteville Tennessee continuously. For instance, tests are being done to see whether there are other materials that can be used for this process. But so far, rotomoulding offers a good option for the production of a wide range of inexpensive plastic products.

The Rotomolding Method Components

This moulding system has been used since early times for creatingvseverl product lines. Egyptians as an example, utilized rotational molding procedures in the creating of ceramics. The Swiss were also applying this rotation style to create hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this approach some time between 1940 and 1950. The process has however taken very long to catch on because it was thought of as being a relatively slow process

1. Mold preparation.
A fixed quantity of polymer in grain form is filled into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel component. The color needed for the finished item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic manufacturing.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then locked and positioned inside the oven.

2. The heating up and fusion process.
Once placed into the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The spinning is done slowly and gradually, about 20 revolutions per min. The main thing that is critical at this point is the amount of time the mold will spend within the oven. If it stays to long, the component will lose stability and durability, generating a weak item. If it is taken out from the oven too early, the polymer will not have flowed properly, which produces bubbles in the finalized item.

3. Mold cooling down.
When the product has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it reduces slightly for ease of removal from the mold. This is an additional step that relies a lot on the correct timing, since rapid cooling shrinks the material too fast, causing warping of the item.

4. The un-loading or de-moulding step.
When the product within te mould has cooled properly, the molder managing the procedure can then take out the finalized item from the mould. The process is repeated from the start, giving a number of identical products.

For more information on the different rotational molding options offered for the Fayetteville TN 37334 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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