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

rotocasting-Gainesboro-Rotational moulding pertains to a plastic manufacturing practice that makes hollow stress-free products. The method depends on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different forms, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing methods that no pressure is needed. It also has few contenders when it comes down to the creation of sizable hollow products which are durable and inexpensive.There is a variety of products that are generated by this process including large water tanks, automobile products, sophisticated designed medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in terms of style and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Gainesboro TN 38562, 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 Molding-Gainesboro-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 Gainesboro 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 Roto-Molding Process Components

This moulding method has been used since earlier times for creatingvseverl product lines. Egyptians for example, employed roto-molding solutions in the producing of ceramics. The Swiss were also making use of this rotation type to make hollow chocolate eggs. Some plastic items in the USA were made using this procedure some time between 1940 and 1950. The system has however taken very long to take affect because it was considered to be a relatively slow-moving process

1. Mold preparation.
A fixed measure of polymer in powder form is packed into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The coloration intended 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 design of plastic assembly.

Preheating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then locked and inserted within 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 coats the inside if the mold. The spinning is done slowly, about 20 revolutions per min. One thing that is vital at this point is the amount of time the mould will spend inside the oven. If it stays to long, the material will lose stability and durability, creating a poor product. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, which develops bubbles in the finalized product line.

3. Mould cooling.
When the product has sufficiently spent the right amount of time in the oven, it is then removed 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 somewhat for ease of removal from the mould. This is yet another step that relies a lot on the ideal timing, since rapid cooling reduces the material too quick, causing warping of the product.

4. The offloading or de-molding phase.
When the material inside te mould has cooled adequately, the person managing the process can then take out the completed product from the mold. The technique is repeated from the start, making a series of identical items.

For more information on the different rotational molding options offered for the Gainesboro TN 38562 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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