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

rotomoulding-Richwoods-Rotational moulding pertains to a plastic production practice that makes hollow stress-free products. The technique uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have various shapes, colors and sizes. This procedure is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this different from other plastic manufacturing processes that no pressure is involved. It also has few contenders when it comes down to the production of sizable hollow items which are resilient and inexpensive.There is a wide range of items that are developed by this process including large size water tanks, automobile products, sophisticated molded medical products, leisure equipment, toys, canoes, industrialized equipment among many others.This is because of the flexibility in terms of type and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Richwoods MO 63071, 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 rotational 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 Molding-Richwoods-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 Richwoods 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 Rotomoulding Process Components

This moulding procedure has been used since ancient times for creatingvseverl product lines. Egyptians as an example, applied rotocasting systems in the of ceramics. The Swiss were also applying this rotation format to make hollow chocolate eggs. Some plastic products in the USA were developed using this approach some time between 1940 and 1950. The procedure has however taken long to take affect because it was looked at as being a very slow process

1. Mould readying.
A fixed volume of polymer in particle form is packed into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel substance. The color chosen for the finished item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic production.

Pre-heating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then sealed and inserted into the oven.

2. The heating and fusion step.
Once within the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The turning is done slowly and gradually, about 20 spins per sixty seconds. The main thing that is critical at this point is the amount of time the mold will spend within the oven. If it overstays, the component will lose value and strength, producing a faulty product. If it is removed from the oven prematurely, the polymer will not have melted properly, which generates bubbles in the finished product line.

3. Mould cooling.
When the material has completely spent the enough of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the material cools, it shrinks a little for ease of extraction from the mould. This is another procedure that depends upon a lot on the ideal timing, since quick cooling shrinks the material too rapidly, causing warping of the product.

4. The offloading or de-molding step.
Once the component inside te mould has cooled correctly, the molder taking care of the procedure can then take out the completed item from the mold. The function is repeated from the beginning, giving a number of identical products.

For more information on the different rotational molding options offered for the Richwoods MO 63071 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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