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

roto-molding-Clarkfield-Rotational moulding refers to a plastic manufacturing practice that creates hollow stress-free product lines. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have various shapes, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing processes that no pressure is called for. It also has few rivals when it comes down to the creation of sizable hollow products which are long lasting and inexpensive.There is a variety of product lines that are created by this process including big water tanks, automobile products, complex designed medical items, leisure equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in regards to style and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Clarkfield MN 56223, 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 Molding-Clarkfield-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 Minnesota 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 Clarkfield Minnesota 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 Process in Detail

This molding method has been used since early times for creatingvseverl product lines. Egyptians for example, applied roto-molding systems in the of ceramics. The Swiss were also using this rotation approach to create hollow chocolate eggs. Some plastic items in the USA were developed using this method some time between 1940 and 1950. The system has however taken very long to catch on because it was considered as being a relatively slow process

1. Mould preparation.
A fixed volume of polymer in particle form is filled into a hollow mould. The mould is usually comprised of cast aluminium or sheet steel component. The coloration needed for the end product is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic production.

Preheating 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 secured and inserted into the oven.

2. The heating up and fusion procedure.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The spinning is done gradually, about 20 rotations per minute. Something that is vital at this point is the amount of time the mold will spend within the oven. If it stays to long, the product will lose value and durability, creating a weak item. If it is removed from the oven too early, the polymer will not have liquefied properly, which creates bubbles in the completed product.

3. Mold cooling down.
When the component has sufficiently spent the correct amount 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 a cool mist. When the component cools, it shrinks a little for ease of removal from the mould. This is another step that relies a lot on the correct timing, since quick cooling decreases the material too rapidly, causing warping of the material.

4. The unloading or de-moulding step.
As soon as the material within te mould has cooled successfully, the person handling the procedure can then extract the completed item from the mould. The technique is repeated from the start, making a number of similar product lines.

For more information on the different rotational rotomolding options offered for the Clarkfield MN 56223 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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