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

rotational moulding-Mountain Grove-Rotational moulding pertains to a plastic production procedure that makes hollow stress-free product lines. The process depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have many different designs, sizes and colors. This technique is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The function that makes this unique from other plastic manufacturing processes because no pressure is required. It also has few competitors when it comes to the manufacture of sizable hollow items which are durable and inexpensive.There is a wide range of items that are created by this process including big water tanks, automobile items, intricate molded medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of design 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 Mountain Grove MO 65711, 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 rotomoulding 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

Custom Molding-Mountain Grove-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 Mountain Grove 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 Method Components

This molding operation has been used since earlier times for creatingvseverl products. Egyptians for example, used rotational molding systems in the creating of ceramics. The Swiss were also utilizing this rotation method to generate hollow chocolate eggs. Some plastic products in the USA were developed using this procedure some time between 1940 and 1950. Since it was regarded to be a very slow-moving method, the process has however taken long to catch on

1. Mold preparation.
A fixed volume of polymer in powder form is packed into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel substance. The coloring intended for the finished product 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 engineering.

Pre-heating of the oven follows, and it may 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 locked and inserted within the oven.

2. The heating and fusion phase.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The spinning is done gradually, about 20 revolutions per minute. The main thing that is important at this moment is the period of time the mould will spend inside the oven. If it overstays, the component will lose stability and durability, producing a poor item. If it is extracted from the oven prematurely, the polymer will not have flowed properly, which generates bubbles in the finished product.

3. Mold cooling.
When the material has sufficiently spent the correct amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it shrinks a little for ease of extraction from the mold. This is another measure that depends upon a lot on the right timing, since quick cooling shrinks the material too quick, causing bending of the product.

4. The offloading or de-moulding step.
As soon as the component inside te mould has cooled properly, the molder managing the operation can then extract the completed item 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 Mountain Grove MO 65711 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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