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

rotomoulding-Dakota-Rotational moulding refers to a plastic manufacturing practice that produces hollow stress-free products. The method relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have several forms, colors and sizes. This method is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The function that makes this different from other plastic manufacturing methods in that no pressure is involved. It also has few contenders when it comes to the production of large hollow items which are resilient and inexpensive.There is a wide variety of items that are generated by this process including large size water tanks, automobile items, complex shaped medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is because of the versatility in regards to design and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Dakota IL 61018, 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 rotocasting 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-Dakota-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 Illinois 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 Dakota Illinois 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 Procedure in Detail

This molding procedure has been used since early times for creatingvseverl products. Egyptians for example, applied rotocasting systems in the making of ceramics. The Swiss were also applying this rotation design to create hollow chocolate eggs. Some plastic items in the USA were made using this approach some time between 1940 and 1950. Given that it was considered to be a rather slow-moving process, the process has however taken long to become popular

1. Mould fitting.
A fixed volume of polymer in particle form is loaded into a hollow mold. The mould is usually constructed from cast aluminium or sheet steel material. The colour desired for the final item 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 manufacturing.

Pre-heating of the oven starts, 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 secured and positioned into the oven.

2. The heating and fusion procedure.
Once within the oven, the mould is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done gradually, about 20 spins per sixty seconds. Something that is vital at this moment is the amount of time the mould will spend within the oven. If it overstays, the product will lose stability and strength, producing a faulty product. If it is extracted from the oven prematurely, the polymer will not have melted properly, which creates bubbles in the finalized product line.

3. Mould cooling down.
When the material has sufficiently spent the right 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 mould. This is another step that relies a lot on the correct timing, since quick cooling shrinks the material too quickly, causing bending of the item.

4. The removing or de-moulding step.
As soon as the component within te mold has cooled adequately, the molder managing the procedure can then extract the completed product from the mould. The process is repeated from the start, giving a number of similar product lines.

For more information on the different rotational molding options offered for the Dakota IL 61018 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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