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

roto-molding-Bowling Green-Rotational moulding pertains to a plastic manufacturing technique that generates hollow stress-free items. The method uses high temperatures and bi axial rotation to come up with seamless, one piece items that have varying designs, 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 benefit that makes this different from other plastic manufacturing processes that no pressure is involved. It also has few contenders when it comes to the creation of large hollow products which are durable and inexpensive.There is a variety of products that are produced by this process including large water tanks, automobile materials, complex designed medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the versatility 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 Bowling Green MO 63334, 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 moulding 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-Bowling Green-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 Bowling Green 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 system has been used since ancient times for creatingvseverl items. Egyptians for example, employed rotomoulding methods in the creating of ceramics. The Swiss were also utilizing this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were created using this procedure some time between 1940 and 1950. Given that it was viewed to be a very slow-moving process, the procedure has however taken long to catch on

1. Mould preparation.
A fixed measure of polymer in powder form is packed into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel substance. The coloration chosen for the end goods 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 design of plastic engineering.

Preheating of the oven follows, 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 locked and inserted inside the oven.

2. The heating and fusion step.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The rotation is done slowly, about 20 rotations per min. One thing that is essential at this moment is the amount of time the mold will spend within the oven. If it stays to long, the product will lose value and strength, making a weak product. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the finalized product line.

3. Mould cooling.
When the component has sufficiently spent the enough of time in the oven, it is then taken out for cooling. This can 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 removal from the mould. This is one more measure that depends upon a lot on the ideal timing, since rapid cooling reduces the material too fast, causing warping of the product.

4. The discharging or de-molding step.
As soon as the material within te mold has cooled correctly, the person handling the process can then take out the completed item from the mold. The technique is repeated from the start, giving a number of similar product lines.

For more information on the different rotational molding options offered for the Bowling Green MO 63334 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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