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

rotomoulding-Portage-Rotational moulding refers to a plastic manufacturing practice that makes hollow stress-free product lines. The process relies upon high temperatures and bi axial rotation to come up with seamless, one piece items that have many different shapes, colors and sizes. This method is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this different from other plastic manufacturing techniques in that no pressure is called for. It also has few contenders when it comes down to the production of large hollow products which are long-lasting and inexpensive.There is a wide variety of products that are produced by this process including large size water tanks, automobile materials, complex molded medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in terms of design and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Portage WI 53901, 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

Plastic Molding-Portage-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 Portage 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 Rotomolding Procedure in Detail

This molding method has been used since earlier times for creatingvseverl items. Egyptians as an example, applied rotomoulding systems in the producing of ceramics. The Swiss were also using this rotation format to generate hollow chocolate eggs. Some plastic products in the USA were manufactured using this procedure some time between 1940 and 1950. Given that it was viewed to be a fairly slow technique, the technique has however taken long to catch on

1. Mould readying.
A predetermined quantity of polymer in grain form is filled into a hollow mold. The mould is usually constructed from cast aluminium or sheet steel substance. The colour preferred for the final goods 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 type of plastic manufacturing.

Preheating of the oven follows, 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 secured and inserted inside the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The turning is done gradually, about 20 spins per min. Something that is crucial at this point is the period of time the mould will spend within the oven. If it stays to long, the material will lose stability and strength, making a weak product. If it is extracted from the oven too early, the polymer will not have flowed correctly, which generates bubbles in the finalized product line.

3. Mold cooling.
When the material has completely spent the right amount of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it shrinks somewhat for ease of extraction from the mould. This is one more measure that depends upon a lot on the ideal timing, since quick cooling reduces the material too quickly, causing bending of the product.

4. The discharging or de-molding step.
Once the material within te mold has cooled effectively, the person taking care of the procedure can then extract the completed product from the mold. The technique is repeated from the start, making a series of exact items.

For more information on the different rotational molding options offered for the Portage WI 53901 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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