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

rotational moulding-Monroe-Rotational moulding refers to a plastic production technique that generates hollow stress-free items. The function relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have many different shapes, colors and sizes. This method is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this unique from other plastic manufacturing techniques in that no pressure is involved. It also has few competitors when it comes down to the manufacture of large size hollow items which are long-lasting and inexpensive.There is a wide range of product lines that are created by this process including big water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of 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 Monroe WI 53566, 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 rotational 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-Monroe-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 Monroe 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 moulding operation has been used since earlier times for creatingvseverl product lines. Egyptians as an example, worked with rotomoulding techniques in the creating of ceramics. The Swiss were also employing this rotation approach to generate hollow chocolate eggs. Some plastic products in the USA were made utilizing this method some time between 1940 and 1950. The process has however taken long to catch on because it was considered to be a rather slow-moving process

1. Mould preparation.
A predetermined amount of polymer in powder form is packed into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel component. The color tone preferred for the final 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 production.

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

2. The heating and fusion procedure.
Once inside the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done slowly, about 20 rotations per minute. Something that is important at this moment is the amount of time the mold will spend inside the oven. If it stays to long, the component will lose value and durability, creating a weak item. If it is removed from the oven too early, the polymer will not have liquefied correctly, which develops bubbles in the finalized item.

3. Mold cooling.
When the material has completely spent the enough of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it shrinks a little for ease of removal from the mold. This is one more procedure that depends upon a lot on the correct timing, since rapid cooling reduces the material too quick, causing warping of the product.

4. The offloading or de-molding phase.
When the material inside te mold has cooled correctly, the person taking care of the procedure can then extract the completed product from the mould. The technique is repeated from the start, supplying a number of similar product lines.

For more information on the different rotational molding options offered for the Monroe WI 53566 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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