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

rotational molding-Mount Vernon-Rotational moulding refers to a plastic manufacturing practice that produces hollow stress-free products. The function uses high temperatures and bi axial rotation to follow up with seamless, one piece objects that have varying forms, colors and sizes. This procedure 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 procedures because no pressure is needed. It also has few competitors when it involves the production of large size hollow products which are long lasting and inexpensive.There is a wide range of products that are generated by this process including large size water tanks, automobile products, sophisticated shaped medical products, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in terms of design and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Mount Vernon MO 65712, 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 rotomolding 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-Mount Vernon-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 Mount Vernon 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 in Detail

This molding technique has been used since early times for creatingvseverl products. Egyptians for instance, used rotomoulding procedures in the of ceramics. The Swiss were also applying this rotation technique to make hollow chocolate eggs. Some plastic items in the USA were developed utilizing this approach some time between 1940 and 1950. The system has however taken very long to catch on because it was considered as being a pretty slow process

1. Mold readying.
A fixed measure of polymer in powder form is loaded into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel material. The coloring desired for the final 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 starts, and it may 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 secured and put into the oven.

2. The heating up and fusion step.
Once within the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done slowly, about 20 rotations per min. One thing that is important at this moment is the amount of time the mould will spend within the oven. If it stays to long, the product will lose value and durability, creating a weak item. If it is extracted from the oven too early, the polymer will not have melted correctly, which generates bubbles in the completed product.

3. Mold cooling down.
When the product has completely spent the correct amount 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 creates a cool mist. When the material cools, it reduces a little for ease of extraction from the mould. This is an additional procedure that relies a lot on the right timing, since quick cooling reduces the material too fast, causing warping of the material.

4. The removing or de-moulding phase.
Once the material within te mould has cooled effectively, the molder taking care of the process can then extract the finalized product from the mould. The procedure is repeated from the beginning, making a series of similar products.

For more information on the different rotational molding options offered for the Mount Vernon MO 65712 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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