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

rotomolding-De Pere-Rotational moulding pertains to a plastic production practice that creates hollow stress-free product lines. The technique depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have a variety of designs, sizes and colors. This method is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The feature that makes this unique from other plastic manufacturing methods because no pressure is involved. It also has few contenders when it comes to the production of large size hollow items which are resilient and inexpensive.There is a variety of products that are produced by this process including large water tanks, automobile materials, complex designed medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in terms of type 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 De Pere WI 54115, 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 Products-De Pere-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 De Pere 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 molding process has been used since earlier times for creatingvseverl products. Egyptians for example, used rotocasting methods in the producing of ceramics. The Swiss were also employing this rotation format to create hollow chocolate eggs. Some plastic products in the USA were manufactured using this method some time between 1940 and 1950. Considering that it was considered to be a somewhat slow-moving procedure, the approach has however taken long to become popular

1. Mould preparation.
A predetermined measure of polymer in powder form is filled into a hollow mould. The mould is usually made of cast aluminium or sheet steel component. The color tone chosen for the finished item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic manufacturing.

Pre-heating of the oven follows, 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 sealed and positioned within the oven.

2. The heating and fusion procedure.
Once within the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done slowly and gradually, about 20 spins per min. The main thing that is essential at this point is the period of time the mold will spend inside the oven. If it stays to long, the component will lose value and strength, generating a weak product. If it is taken out from the oven too early, the polymer will not have flowed properly, which creates bubbles in the finalized product line.

3. Mould cooling.
When the material has completely spent the enough 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 generates a cool mist. When the component cools, it reduces a little for ease of removal from the mold. This is yet another procedure that relies a lot on the right timing, since quick cooling shrinks the material too quick, causing warping of the item.

4. The offloading or de-molding step.
As soon as the material within te mould has cooled effectively, the person managing the process can then extract the finalized item from the mould. The function is repeated from the start, providing a number of similar items.

For more information on the different rotational molding options offered for the De Pere WI 54115 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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