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

rotomoulding-Theodosia-Rotational molding refers to a plastic production procedure that produces hollow stress-free product lines. The procedure depends on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various forms, colors and sizes. This procedure is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing methods that no pressure is required. It also has few competitors when it comes down to the manufacture of sizable hollow products which are resilient and inexpensive.There is a variety of products that are produced by this process including large size water tanks, automobile products, sophisticated designed medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in regards to 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 Theodosia MO 65761, 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

Custom Molding-Theodosia-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 Missouri 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 Theodosia Missouri 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 Method Components

This molding process has been used since ancient times for creatingvseverl items. Egyptians as an example, applied rotational molding procedures in the producing of ceramics. The Swiss were also utilizing this rotation method to make hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this approach some time between 1940 and 1950. The process has however taken very long to catch on because it was looked at as being a pretty slow process

1. Mould preparation.
A fixed quantity of polymer in grain form is loaded into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel material. The color tone intended for the finished goods 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 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 secured and installed 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 overlays the inside if the mould. The turning is done slowly and gradually, about 20 revolutions per minute. The main thing that is crucial at this point is the amount of time the mould will spend within the oven. If it stays to long, the material will lose stability and durability, generating a weak product. If it is extracted from the oven too early, the polymer will not have flowed correctly, which produces bubbles in the finalized product line.

3. Mold cooling down.
When the material has sufficiently spent the right amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it reduces a little for ease of removal from the mould. This is another step that depends a lot on the correct timing, since rapid cooling decreases the material too fast, causing bending of the product.

4. The discharging or de-molding step.
Once the component within te mould has cooled correctly, the person managing the procedure can then extract the finished item from the mold. The function is repeated from the beginning, making a number of exact items.

For more information on the different rotational molding options offered for the Theodosia MO 65761 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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