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

rotomolding-Drummond-Rotational moulding refers to a plastic production technique that produces hollow stress-free product lines. The technique utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have a variety of forms, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The function that makes this different from other plastic manufacturing methods in that no pressure is required. It also has few competitors when it involves the manufacture of sizable hollow products which are long-lasting and inexpensive.There is a variety of products that are produced by this process including big water tanks, automobile products, complex designed medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in regards to type and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Drummond WI 54832, 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 roto-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-Drummond-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 Drummond 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 in Detail

This moulding system has been used since early times for creatingvseverl products. Egyptians as an example, used roto-molding techniques in the making of ceramics. The Swiss were also applying this rotation design to make hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this method some time between 1940 and 1950. The system has however taken long to take affect because it was thought of as being a very slow process

1. Mould readying.
A predetermined quantity of polymer in powder form is packed into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel substance. The coloration desired for the finished product 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 can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then secured and placed inside the oven.

2. The heating and fusion step.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The spinning is done slowly and gradually, about 20 spins per min. The main thing that is vital at this point is the amount of time the mould will spend inside the oven. If it stays to long, the product will lose stability and durability, creating a poor item. If it is removed from the oven too early, the polymer will not have liquefied correctly, which develops bubbles in the completed item.

3. Mold cooling down.
When the product has sufficiently spent the correct 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 product cools, it reduces a little for ease of removal from the mould. This is yet another measure that relies a lot on the correct timing, since rapid cooling shrinks the material too quickly, causing bending of the item.

4. The removing or de-molding step.
As soon as the component inside te mold has cooled correctly, the molder managing the process can then take out the completed product from the mould. The function is repeated from the beginning, giving a number of exact product lines.

For more information on the different rotational molding options offered for the Drummond WI 54832 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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