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

rotomolding-Lafayette-Rotational molding refers to a plastic manufacturing procedure that generates hollow stress-free product lines. The technique depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have varying designs, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing methods in that no pressure is required. It also has few rivals when it pertains to the creation of large hollow items which are durable and inexpensive.There is a variety of product lines that are generated by this process including big water tanks, automobile products, intricate molded medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in terms of design and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Lafayette MN 56054, 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

Custom Molded-Lafayette-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 Lafayette 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 Rotomoulding Procedure in Detail

This moulding procedure has been used since early times for creatingvseverl product lines. Egyptians for instance, utilized rotocasting systems in the of ceramics. The Swiss were also working with this rotation method to generate hollow chocolate eggs. Some plastic items in the USA were made using this technique some time between 1940 and 1950. Since it was looked at to be a rather slow method, the method has however taken long to catch on

1. Mould fitting.
A fixed measure of polymer in particle form is loaded into a hollow mould. The mold is usually built from cast aluminium or sheet steel component. The coloring intended for the final goods 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 type of plastic engineering.

Pre-heating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mold with the powdered polymer is then secured and inserted inside the oven.

2. The heat and fusion process.
Once within the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The turning is done slowly and gradually, about 20 rotations per sixty seconds. Something that is important at this moment is the period of time the mold will spend inside the oven. If it overstays, the material will lose value and strength, creating a poor product. If it is taken out from the oven too early, the polymer will not have melted properly, which generates bubbles in the completed product.

3. Mould cooling down.
When the material has completely spent the enough of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it reduces slightly for ease of extraction from the mold. This is another step that depends a lot on the correct timing, since quick cooling shrinks the material too quick, causing bending of the product.

4. The discharging or de-moulding phase.
As soon as the product within te mould has cooled properly, the person handling the procedure can then take out the finalized product from the mold. The procedure is repeated from the start, giving a series of similar items.

For more information on the different rotational rotomolding options offered for the Lafayette MN 56054 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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