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

rotomolding-Bradleyville-Rotational moulding pertains to a plastic production technique that makes hollow stress-free products. The method utilizes high temperatures and bi axial rotation to follow up with seamless, one piece items that have various forms, sizes and colors. This method is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing techniques in that no pressure is involved. It also has few competitors when it involves the production of large hollow items which are long-lasting and inexpensive.There is a wide range of items that are developed by this process including large size water tanks, automobile materials, intricate shaped medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in terms of style and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Bradleyville MO 65614, 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

Plastic Molding-Bradleyville-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 Bradleyville 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 Method Components

This molding procedure has been used since ancient times for creatingvseverl products. Egyptians for example, used rotational molding procedures in the creating of ceramics. The Swiss were also utilizing this rotation format to create hollow chocolate eggs. Some plastic products in the USA were manufactured utilizing this approach some time between 1940 and 1950. The process has however taken long to catch on because it was looked at to be a moderately slow-moving process

1. Mould preparation.
A fixed quantity of polymer in particle form is packed into a hollow mold. The mold is usually made from cast aluminium or sheet steel material. The color tone 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 production.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then sealed and put into the oven.

2. The heating and fusion step.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done slowly and gradually, about 20 revolutions per min. The main thing that is critical at this moment is the amount of time the mould will spend inside the oven. If it stays to long, the component will lose stability and durability, generating a poor product. If it is taken out from the oven too early, the polymer will not have flowed properly, which develops bubbles in the completed item.

3. Mould cooling down.
When the component has completely spent the right amount of time in the oven, it is then taken out for cooling. This may 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 mould. This is one more measure that relies a lot on the correct timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The discharging or de-moulding phase.
As soon as the product within te mould has cooled effectively, the person managing the operation can then take out the finalized item from the mold. The technique is repeated from the beginning, providing a series of exact product lines.

For more information on the different rotational molding options offered for the Bradleyville MO 65614 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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