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

rotational moulding-Ashland-Rotational moulding pertains to a plastic production solution that generates hollow stress-free products. The method depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have a wide range of forms, colors and sizes. This technique is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this different from other plastic manufacturing methods that no pressure is needed. It also has few competitors when it involves the creation of large hollow products which are long-lasting and inexpensive.There is a variety of products that are produced by this process including large water tanks, automobile products, intricate molded medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in terms of 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 Ashland MO 65010, 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 Molded-Ashland-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 Ashland 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 product lines. Egyptians for example, worked with rotocasting solutions in the of ceramics. The Swiss were also applying this rotation type to generate hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this technique some time between 1940 and 1950. The process has however taken long to catch on because it was looked at to be a pretty slow process

1. Mold preparation.
A predetermined volume of polymer in grain form is loaded into a hollow mold. The mold is usually made from cast aluminium or sheet steel component. The colour chosen for the finished goods 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 format of plastic assembly.

Pre-heating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then sealed and inserted within the oven.

2. The heating and fusion process.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The rotation is done slowly and gradually, about 20 rotations per sixty seconds. One thing that is essential at this moment is the amount of time the mold will spend within the oven. If it overstays, the component will lose value and durability, generating a weak item. If it is removed from the oven too early, the polymer will not have flowed properly, which creates bubbles in the completed item.

3. Mold cooling.
When the material has completely spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the material cools, it reduces slightly for ease of extraction from the mold. This is another measure that relies a lot on the ideal timing, since rapid cooling shrinks the material too quickly, causing warping of the product.

4. The offloading or de-moulding step.
As soon as the component inside te mould has cooled adequately, the molder taking care of the procedure can then take out the completed product from the mould. The function is repeated from the start, providing a number of exact items.

For more information on the different rotational molding options offered for the Ashland MO 65010 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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