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

rotational molding-Risco-Rotational moulding refers to a plastic production procedure that creates hollow stress-free items. The function depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have different forms, colors and sizes. This method is also called rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The benefit that makes this unique from other plastic manufacturing procedures because no pressure is called for. It also has few contenders when it pertains to the manufacture of large size hollow items which are resilient and inexpensive.There is a wide variety of product lines that are produced by this process including big water tanks, automobile items, complex molded medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in terms of type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Risco MO 63874, 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 Products-Risco-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 Risco 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 Procedure in Detail

This moulding process has been used since ancient times for creatingvseverl items. Egyptians for example, employed rotomoulding solutions in the making of ceramics. The Swiss were also making use of this rotation type to create hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this approach some time between 1940 and 1950. The procedure has however taken long to catch on because it was thought of as being a pretty slow process

1. Mold prep work.
A predetermined quantity of polymer in grain form is filled into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel component. The color desired for the end item 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 style of plastic assembly.

Pre-heating of the oven starts, and it can 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 put into the oven.

2. The heat and fusion step.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done slowly and gradually, about 20 revolutions per sixty seconds. The main thing that is crucial at this point is the period of time the mold will spend within the oven. If it overstays, the material will lose stability and strength, creating a poor item. If it is removed from the oven too early, the polymer will not have flowed correctly, which generates bubbles in the completed product.

3. Mold cooling.
When the component has completely 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 creates a cool mist. When the product cools, it reduces a little for ease of extraction from the mould. This is yet another procedure that relies a lot on the ideal timing, since quick cooling shrinks the material too fast, causing warping of the item.

4. The discharging or de-moulding phase.
When the product within te mold has cooled properly, the person managing the procedure can then take out the completed product from the mold. The procedure is repeated from the beginning, giving a number of identical products.

For more information on the different rotational molding options offered for the Risco MO 63874 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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