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

rotomoulding-South West City-Rotational moulding pertains to a plastic manufacturing practice that creates hollow stress-free items. The function relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have different designs, colors and sizes. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this unique from other plastic manufacturing processes because no pressure is called for. It also has few rivals when it pertains to the creation of large size hollow products which are long-lasting and inexpensive.There is a variety of product lines that are developed by this process including big water tanks, automobile items, sophisticated designed medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the flexibility in terms of type and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in South West City MO 64863, 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

Plastic Products-South West City-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 South West City 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 Components

This molding system has been used since earlier times for creatingvseverl items. Egyptians for example, applied rotomoulding systems in the of ceramics. The Swiss were also utilizing this rotation style to generate hollow chocolate eggs. Some plastic products in the USA were created utilizing this method some time between 1940 and 1950. The procedure has however taken long to take affect because it was considered to be a rather slow-moving process

1. Mold preparation.
A fixed measure of polymer in grain form is filled into a hollow mold. The mould is usually made from cast aluminium or sheet steel component. The coloring needed for the finished item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic assembly.

Preheating 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 secured and placed inside the oven.

2. The heat and fusion procedure.
Once inside the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done slowly, about 20 revolutions per sixty seconds. The main thing that is crucial at this point is the amount of time the mould will spend within the oven. If it overstays, the product will lose value and durability, creating a weak item. If it is taken out from the oven too early, the polymer will not have melted properly, which creates bubbles in the completed item.

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

4. The unloading or de-molding phase.
When the component inside te mould has cooled effectively, the person taking care of the operation can then take out the finalized product from the mold. The function is repeated from the beginning, making a series of similar items.

For more information on the different rotational molding options offered for the South West City MO 64863 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic products

Local Resources

Production Example
Google Map