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

rotocasting-Somerville-Rotational moulding refers to a plastic production method that generates hollow stress-free products. The technique depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have various forms, sizes and colors. This method is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this unique from other plastic manufacturing processes because no pressure is required. It also has few contenders when it pertains to the production of sizable hollow items which are long lasting and inexpensive.There is a wide range of items that are produced by this process including big water tanks, automobile items, intricate molded medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in regards to type 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 Somerville TN 38068, 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

Custom Molded-Somerville-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 Somerville 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 Procedure Components

This moulding system has been used since ancient times for creatingvseverl items. Egyptians for instance, applied rotational molding systems in the creating of ceramics. The Swiss were also working with this rotation style to create hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this procedure some time between 1940 and 1950. The process has however taken long to catch on because it was thought of to be a rather slow-moving process

1. Mould prep work.
A fixed volume of polymer in powder form is loaded into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel component. The color tone needed for the finished product is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic production.

Pre-heating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then sealed and installed inside the oven.

2. The heat and fusion phase.
Once inside the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The rotation is done gradually, about 20 rotations per minute. Something that is critical at this moment is the period of time the mould will spend within the oven. If it stays to long, the product will lose value and strength, generating a poor item. If it is removed from the oven prematurely, the polymer will not have flowed correctly, which produces bubbles in the finished product line.

3. Mould cooling down.
When the component has completely spent the enough of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it shrinks somewhat for ease of extraction from the mould. This is one more step that depends a lot on the ideal timing, since quick cooling reduces the material too rapidly, causing bending of the material.

4. The discharging or de-molding step.
As soon as the component inside te mold has cooled adequately, the molder handling the process can then take out the finished item from the mould. The process is repeated from the beginning, making a number of exact products.

For more information on the different rotational molding options offered for the Somerville TN 38068 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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