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

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

The benefit that makes this unique from other plastic manufacturing methods that no pressure is needed. It also has few contenders when it comes down to the production of large hollow items which are durable and inexpensive.There is a wide variety of items that are produced by this process including big water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in regards to design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Lowland TN 37778, 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 rotocasting 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-Lowland-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 Lowland 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 in Detail

This molding operation has been used since earlier times for creatingvseverl items. Egyptians as an example, utilized rotational molding methods in the producing of ceramics. The Swiss were also employing this rotation method to make hollow chocolate eggs. Some plastic items in the USA were manufactured using this method some time between 1940 and 1950. The procedure has however taken long to catch on because it was thought of to be a moderately slow-moving process

1. Mold fitting.
A predetermined volume of polymer in particle form is loaded into a hollow mould. The mould is usually made of cast aluminium or sheet steel component. The color wanted for the end goods 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 manufacturing.

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 mold with the powdered polymer is then locked and placed into the oven.

2. The heat and fusion step.
Once placed into the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The turning is done gradually, about 20 rotations per min. Something that is vital at this moment is the period of time the mould will spend inside the oven. If it stays to long, the material will lose value and strength, creating a faulty product. If it is extracted from the oven too early, the polymer will not have melted correctly, which produces bubbles in the finalized product.

3. Mold cooling down.
When the product has sufficiently spent the correct amount 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 creates a cool mist. When the component cools, it shrinks slightly for ease of removal from the mould. This is an additional step that depends upon a lot on the correct timing, since quick cooling decreases the material too quickly, causing warping of the item.

4. The un-loading or de-moulding phase.
Once the product within te mould has cooled correctly, the molder taking care of the operation can then remove the finalized product from the mould. The procedure is repeated from the start, providing a number of exact product lines.

For more information on the different rotational molding options offered for the Lowland TN 37778 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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