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

rotational moulding-Cardwell-Rotational molding pertains to a plastic production practice that generates hollow stress-free products. The process utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different designs, colors and sizes. This procedure is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The benefit that makes this unique from other plastic manufacturing methods because no pressure is needed. It also has few contenders when it involves the creation of large hollow products which are long lasting and inexpensive.There is a wide range of product lines that are developed by this process including large water tanks, automobile items, complex molded medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in terms of design 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 Cardwell MO 63829, 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

Custom Molded-Cardwell-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 Cardwell 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 Rotomoulding Method Components

This molding system has been used since early times for creatingvseverl items. Egyptians for instance, used rotocasting methods in the producing of ceramics. The Swiss were also making use of this rotation design to make hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this technique some time between 1940 and 1950. The procedure has however taken very long to catch on because it was thought of as being a pretty slow process

1. Mold preparation.
A predetermined measure of polymer in particle form is packed into a hollow mold. The mold is usually made of cast aluminium or sheet steel component. The colour wanted for the end item 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 format of plastic assembly.

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 mould with the powdered polymer is then sealed and put inside the oven.

2. The heating and fusion procedure.
Once inside the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The turning is done gradually, about 20 rotations per minute. The main thing that is important at this moment is the period of time the mould will spend within the oven. If it stays to long, the component will lose value and durability, making a faulty product. If it is removed from the oven prematurely, the polymer will not have liquefied correctly, which generates bubbles in the finalized product line.

3. Mould cooling.
When the product has completely spent the correct amount of time in the oven, it is then taken out 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 somewhat for ease of extraction from the mould. This is another step that depends upon a lot on the correct timing, since quick cooling decreases the material too quickly, causing bending of the material.

4. The un-loading or de-moulding step.
When the component inside te mould has cooled correctly, the molder handling the procedure can then remove the completed item from the mold. The procedure is repeated from the beginning, providing a number of exact items.

For more information on the different rotational molding options offered for the Cardwell MO 63829 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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