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

rotomoulding-Blair-Rotational moulding pertains to a plastic manufacturing solution that creates hollow stress-free items. The method uses high temperatures and bi axial rotation to follow up with seamless, one piece items that have varying forms, colors and sizes. This method is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing processes because no pressure is called for. It also has few contenders when it pertains to the creation of large hollow products which are resilient and inexpensive.There is a wide range of products that are generated by this process including large water tanks, automobile items, intricate molded medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the versatility in regards to type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Blair WI 54616, 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 Molding-Blair-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 Wisconsin 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 Blair Wisconsin 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 Process Components

This moulding method has been used since earlier times for creatingvseverl items. Egyptians for example, used rotational molding procedures in the of ceramics. The Swiss were also working with this rotation type to create hollow chocolate eggs. Some plastic products in the USA were manufactured using this technique some time between 1940 and 1950. The technique has however taken long to take affect because it was looked at to be a pretty slow process

1. Mold prep work.
A predetermined quantity of polymer in powder form is packed into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The coloring chosen for the final 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 style of plastic assembly.

Preheating of the oven starts, and it may 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 locked and put within the oven.

2. The heating up and fusion phase.
Once placed into the oven, the mould is spun on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done gradually, about 20 rotations per min. Something that is crucial at this point is the amount of time the mould will spend inside the oven. If it overstays, the material will lose stability and strength, generating a poor product. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the completed product.

3. Mould cooling.
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 component cools, it reduces somewhat for ease of extraction from the mold. This is one more procedure that depends upon a lot on the right timing, since quick cooling shrinks the material too quick, causing bending of the item.

4. The unloading or de-molding step.
Once the component within te mold has cooled successfully, the molder taking care of the process can then remove the completed item from the mold. The function is repeated from the start, giving a series of exact products.

For more information on the different rotational molding options offered for the Blair WI 54616 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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