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

rotomoulding-Elkton-Rotational molding pertains to a plastic production technique that generates hollow stress-free product lines. The technique relies upon high temperatures and bi axial rotation to follow up with seamless, one piece items that have a variety of designs, colors and sizes. This procedure is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The component that makes this different from other plastic manufacturing methods in that no pressure is called for. It also has few contenders when it comes to the production of large size hollow products which are durable and inexpensive.There is a wide variety of product lines that are created by this process including big water tanks, automobile products, intricate designed medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the versatility in regards to type and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Elkton TN 38455, 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 moulding 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 Molded-Elkton-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 Elkton 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 in Detail

This moulding process has been used since ancient times for creatingvseverl products. Egyptians as an example, used roto-molding systems in the of ceramics. The Swiss were also employing this rotation technique to create hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this method some time between 1940 and 1950. The process has however taken very long to take affect because it was considered as being a moderately slow-moving process

1. Mold readying.
A fixed quantity of polymer in grain form is loaded into a hollow mold. The mold is usually made of cast aluminium or sheet steel substance. The colour desired for the finished 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 design of plastic manufacturing.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then sealed and inserted into the oven.

2. The heating up and fusion phase.
Once inside the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done gradually, about 20 rotations per min. One thing that is crucial at this point is the amount of time the mould will spend within the oven. If it overstays, the product will lose value and durability, making a weak product. If it is taken out from the oven prematurely, the polymer will not have flowed properly, which develops bubbles in the finished item.

3. Mould cooling down.
When the material has sufficiently 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 removal from the mould. This is one more procedure that relies a lot on the ideal timing, since quick cooling reduces the material too fast, causing bending of the material.

4. The offloading or de-moulding phase.
When the product within te mould has cooled effectively, the molder taking care of the process can then take out the finalized item from the mold. The function is repeated from the beginning, giving a number of exact items.

For more information on the different rotational molding options offered for the Elkton TN 38455 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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