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

rotational moulding-Coal City-Rotational moulding pertains to a plastic production technique that produces hollow stress-free products. The method relies on high temperatures and bi axial rotation to come up with seamless, one piece objects that have a wide range of designs, colors and sizes. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The feature that makes this unique from other plastic manufacturing techniques because no pressure is involved. It also has few competitors when it comes to the manufacture of large size hollow products which are resilient and inexpensive.There is a wide range of products that are developed by this process including big water tanks, automobile products, sophisticated designed medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in terms of design and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Coal City IL 60416, 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 rotational molding 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-Coal 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 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 Coal City 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 Roto-Molding Method in Detail

This moulding technique has been used since earlier times for creatingvseverl items. Egyptians as an example, worked with rotomoulding techniques in the of ceramics. The Swiss were also utilizing this rotation technique to generate hollow chocolate eggs. Some plastic products in the USA were created utilizing this procedure some time between 1940 and 1950. The technique has however taken very long to take affect because it was considered to be a rather slow process

1. Mould preparation.
A predetermined volume of polymer in grain form is packed into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel material. The color tone intended for the final goods 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 production.

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 mold with the powdered polymer is then locked and placed inside the oven.

2. The heating up and fusion phase.
Once placed into the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done slowly, about 20 revolutions per sixty seconds. Something that is critical at this point is the period of time the mold will spend within the oven. If it stays to long, the material will lose stability and strength, generating a faulty item. If it is taken out from the oven too early, the polymer will not have melted properly, which creates bubbles in the finished item.

3. Mold cooling.
When the product 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 a cool mist. When the component cools, it shrinks slightly for ease of extraction from the mould. This is another procedure that depends upon a lot on the right timing, since quick cooling reduces the material too fast, causing bending of the material.

4. The un-loading or de-moulding step.
When the material within te mould has cooled adequately, the molder taking care of the operation can then remove the finalized product from the mold. The process is repeated from the beginning, giving a number of identical product lines.

For more information on the different rotational molding options offered for the Coal City IL 60416 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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