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

rotomoulding-Winfield-Rotational molding refers to a plastic production method that creates hollow stress-free product lines. The process depends on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different shapes, sizes and colors. This method is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing methods that no pressure is required. It also has few competitors when it comes to the creation of large size hollow products which are durable and inexpensive.There is a wide variety of items that are generated by this process including large size water tanks, automobile materials, complex molded medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in terms of type and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Winfield MO 63389, 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 Products-Winfield-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 Winfield 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 Roto-Molding Process in Detail

This molding system has been used since ancient times for creatingvseverl products. Egyptians for example, used roto-molding systems in the making of ceramics. The Swiss were also using this rotation technique to generate hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this method some time between 1940 and 1950. Since it was considered to be a very slow technique, the process has however taken long to catch on

1. Mould fitting.
A predetermined measure of polymer in grain form is loaded into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel component. The coloration wanted for the finished product is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic assembly.

Preheating of the oven follows, and it can 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 sealed and put inside the oven.

2. The heating and fusion phase.
Once inside the oven, the mold is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done slowly, about 20 spins per sixty seconds. One thing that is critical at this moment is the period of time the mould will spend within the oven. If it stays to long, the component will lose value and durability, generating a poor item. If it is taken out from the oven too early, the polymer will not have melted properly, which produces bubbles in the finished product line.

3. Mold cooling.
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 creates a cool mist. When the product cools, it shrinks somewhat for ease of extraction from the mould. This is an additional step that depends upon a lot on the correct timing, since rapid cooling decreases the material too rapidly, causing bending of the material.

4. The removing or de-molding step.
When the component within te mould has cooled correctly, the molder managing the operation can then remove the finalized product from the mold. The function is repeated from the beginning, providing a series of identical products.

For more information on the different rotational molding options offered for the Winfield MO 63389 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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