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

rotomoulding-Monticello-Rotational moulding pertains to a plastic manufacturing method that creates hollow stress-free product lines. The technique relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have a variety of forms, colors and sizes. This technique is also called rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this different from other plastic manufacturing procedures that no pressure is involved. It also has few rivals when it pertains to the manufacture of large size hollow products which are resilient and inexpensive.There is a variety of products that are created by this process including big water tanks, automobile products, complex designed medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in regards to type and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Monticello MO 63457, 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 Products-Monticello-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 Monticello 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 Rotomolding Procedure Components

This moulding operation has been used since early times for creatingvseverl products. Egyptians for example, utilized rotomoulding techniques in the making 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 approach some time between 1940 and 1950. Since it was regarded to be a very slow technique, the approach has however taken long to catch on

1. Mould fitting.
A predetermined quantity of polymer in grain form is loaded into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel material. The colour preferred for the finished product 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 design of plastic production.

Preheating 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 mold with the powdered polymer is then sealed and inserted within the oven.

2. The heat and fusion step.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 rotations per minute. One thing that is essential at this point is the amount of time the mould will spend within the oven. If it stays to long, the component will lose stability and durability, making a poor product. If it is taken out from the oven prematurely, the polymer will not have flowed properly, which creates bubbles in the finished product.

3. Mold cooling down.
When the product has sufficiently 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 creates a cool mist. When the product cools, it shrinks slightly for ease of removal from the mold. This is an additional measure that depends upon a lot on the correct timing, since rapid cooling shrinks the material too fast, causing bending of the product.

4. The removing or de-molding step.
When the product within te mould has cooled successfully, the molder handling the operation can then take out the finalized product from the mold. The function is repeated from the start, providing a series of identical product lines.

For more information on the different rotational molding options offered for the Monticello MO 63457 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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