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

rotomolding-Dexter-Rotational moulding refers to a plastic production technique that generates hollow stress-free products. The process utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have different shapes, sizes and colors. This method is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The attribute that makes this different from other plastic manufacturing procedures that no pressure is required. It also has few competitors when it pertains to the production of large size hollow products which are resilient and inexpensive.There is a wide range of items that are developed by this process including large size water tanks, automobile materials, complex designed medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in terms of design and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Dexter MO 63841, 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 Molding-Dexter-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 Dexter 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 earlier times for creatingvseverl product lines. Egyptians for instance, applied rotomoulding procedures in the creating of ceramics. The Swiss were also working with this rotation technique to generate hollow chocolate eggs. Some plastic product lines in the USA were developed using this technique some time between 1940 and 1950. The system has however taken very long to catch on because it was considered to be a rather slow process

1. Mould fitting.
A predetermined volume of polymer in powder form is packed into a hollow mold. The mold is usually made from cast aluminium or sheet steel substance. The color desired for the end 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 style of plastic assembly.

Pre-heating of the oven starts, 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 locked and positioned within the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done gradually, about 20 revolutions per minute. One thing that is critical at this moment is the amount of time the mould will spend inside the oven. If it overstays, the product will lose value and strength, producing a faulty item. If it is extracted from the oven too early, the polymer will not have liquefied properly, which produces bubbles in the completed product.

3. Mould cooling down.
When the product has completely spent the correct 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 component cools, it shrinks a little for ease of extraction from the mold. This is yet another measure that depends a lot on the ideal timing, since quick cooling shrinks the material too quick, causing warping of the product.

4. The unloading or de-molding step.
When the product within te mould has cooled effectively, the person handling the operation can then extract the finished item from the mould. The procedure is repeated from the start, giving a series of similar products.

For more information on the different rotational molding options offered for the Dexter MO 63841 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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