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

rotocasting-Hendersonville-Rotational moulding refers to a plastic production method that makes hollow stress-free products. The process utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have a variety of designs, colors and sizes. This procedure is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing techniques that no pressure is needed. It also has few competitors when it comes down to the creation of large hollow products which are long-lasting and inexpensive.There is a wide variety of products that are produced by this process including large size water tanks, automobile products, sophisticated shaped medical products, leisure equipment, toys, canoes, industrialized equipment among many others.This is due to the versatility in terms of type and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Hendersonville TN 37075, 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 rotational 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

Custom Molding-Hendersonville-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 Hendersonville 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 Process Components

This moulding process has been used since early times for creatingvseverl product lines. Egyptians as an example, utilized rotocasting solutions in the making of ceramics. The Swiss were also making use of this rotation style to create hollow chocolate eggs. Some plastic products in the USA were developed utilizing this technique some time between 1940 and 1950. The system has however taken long to catch on because it was looked at to be a very slow-moving process

1. Mold readying.
A fixed quantity of polymer in powder form is packed into a hollow mold. The mold is usually made from cast aluminium or sheet steel substance. The coloring preferred for the end product is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic production.

Pre-heating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then secured and put inside the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The spinning is done slowly and gradually, about 20 rotations per minute. One thing that is vital at this moment is the amount of time the mould will spend within the oven. If it stays to long, the component will lose stability and strength, generating a faulty product. If it is removed from the oven prematurely, the polymer will not have melted correctly, which produces bubbles in the finalized item.

3. Mould cooling.
When the component has completely spent the enough of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the material cools, it shrinks a little for ease of extraction from the mould. This is yet another step that depends upon a lot on the ideal timing, since quick cooling decreases the material too rapidly, causing bending of the item.

4. The offloading or de-molding step.
When the material within te mold has cooled properly, the molder managing the process can then extract the finished product from the mould. The procedure is repeated from the start, providing a number of identical items.

For more information on the different rotational molding options offered for the Hendersonville TN 37075 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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