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

rotomolding-Racine-Rotational moulding pertains to a plastic manufacturing method that produces hollow stress-free items. The function utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have many different designs, colors and sizes. This procedure is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The function that makes this different from other plastic manufacturing techniques in that no pressure is involved. It also has few contenders when it pertains to the production of large size hollow items which are resilient and inexpensive.There is a wide variety of product lines that are developed by this process including big water tanks, automobile products, complex designed medical items, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the versatility in terms of style 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 Racine WI 53401, 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

Plastic Manufacturing-Racine-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 Racine 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 Roto-Molding Method Components

This molding process has been used since ancient times for creatingvseverl product lines. Egyptians for instance, applied rotational molding procedures in the of ceramics. The Swiss were also using this rotation design to create hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this approach some time between 1940 and 1950. The technique has however taken long to catch on because it was considered as being a somewhat slow process

1. Mould readying.
A fixed amount of polymer in powder form is filled into a hollow mold. The mold is usually constructed from cast aluminium or sheet steel substance. The coloring desired for the finished 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 type of plastic assembly.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mold with the powdered polymer is then secured and installed into the oven.

2. The heat and fusion procedure.
Once inside the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The spinning is done gradually, about 20 rotations per sixty seconds. One thing that is important at this point is the amount of time the mould will spend within the oven. If it stays to long, the product will lose stability and strength, generating a poor item. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, which produces bubbles in the finalized product.

3. Mold cooling.
When the material has completely spent the right amount of time in the oven, it is then taken out 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 slightly for ease of extraction from the mould. This is an additional procedure that depends a lot on the right timing, since quick cooling reduces the material too fast, causing bending of the item.

4. The offloading or de-molding step.
Once the component within te mould has cooled adequately, the molder handling the procedure can then take out the finalized product from the mold. The process is repeated from the beginning, making a number of identical items.

For more information on the different rotational molding options offered for the Racine WI 53401 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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