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

rotomoulding-Dudley-Rotational molding refers to a plastic manufacturing procedure that generates hollow stress-free items. The technique relies on high temperatures and bi axial rotation to come up with seamless, one piece objects that have different forms, sizes and colors. This procedure is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this unique from other plastic manufacturing methods in that no pressure is called for. It also has few contenders when it involves the manufacture of large size hollow products which are long-lasting and inexpensive.There is a wide range of items that are developed by this process including large water tanks, automobile items, complex designed medical items, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in regards to type and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Dudley MO 63936, 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

Custom Molded-Dudley-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 Dudley 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 Process in Detail

This molding procedure has been used since ancient times for creatingvseverl products. Egyptians for example, applied rotocasting systems in the producing of ceramics. The Swiss were also making use of this rotation format to generate hollow chocolate eggs. Some plastic items in the USA were developed using this procedure some time between 1940 and 1950. Given that it was considered to be a relatively slow-moving system, the approach has however taken long to become popular

1. Mold preparation.
A predetermined volume of polymer in grain form is packed into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel material. The color tone wanted for the finished product 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 type of plastic manufacturing.

Pre-heating of the oven starts, and it can 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 put into the oven.

2. The heat and fusion phase.
Once within the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The rotation is done gradually, about 20 rotations per sixty seconds. Something that is essential at this moment is the period of time the mould will spend inside the oven. If it stays to long, the material will lose value and durability, generating a faulty item. If it is removed from the oven prematurely, the polymer will not have melted correctly, which creates bubbles in the completed product line.

3. Mould cooling.
When the material has sufficiently spent the right 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 generates a cool mist. When the product cools, it shrinks a little for ease of removal from the mold. This is an additional measure that depends a lot on the right timing, since quick cooling reduces the material too quick, causing bending of the product.

4. The discharging or de-moulding phase.
As soon as the component within te mold has cooled properly, the person taking care of the process can then extract the finalized item from the mould. The function is repeated from the start, giving a number of similar items.

For more information on the different rotational molding options offered for the Dudley MO 63936 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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