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

rotational molding-Louisville-Rotational molding pertains to a plastic production technique that generates hollow stress-free product lines. The method depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have many different designs, colors and sizes. This procedure is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The attribute that makes this different from other plastic manufacturing techniques that no pressure is called for. 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 generated by this process including big water tanks, automobile products, complex designed medical items, leisure equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in terms of type and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Louisville KY 40201, 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 rotomolding 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-Louisville-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 Kentucky 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 Louisville Kentucky 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 Rotomolding Procedure Components

This molding technique has been used since ancient times for creatingvseverl items. Egyptians for instance, worked with roto-molding procedures in the of ceramics. The Swiss were also utilizing this rotation technique to create hollow chocolate eggs. Some plastic items in the USA were created using this procedure some time between 1940 and 1950. The technique has however taken long to catch on because it was looked at as being a somewhat slow-moving process

1. Mould readying.
A predetermined amount of polymer in particle form is packed into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel substance. The coloring desired 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 engineering.

Pre-heating of the oven follows, 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 installed into the oven.

2. The heat and fusion process.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The spinning is done slowly and gradually, about 20 spins per sixty seconds. One thing that is crucial at this moment is the period of time the mould will spend within the oven. If it overstays, the product will lose value and strength, producing a weak item. If it is taken out from the oven too early, the polymer will not have flowed properly, which creates bubbles in the completed product.

3. Mold cooling down.
When the product has sufficiently spent the right amount 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 component cools, it shrinks somewhat for ease of extraction from the mold. This is another step that relies a lot on the ideal timing, since rapid cooling shrinks the material too rapidly, causing bending of the product.

4. The removing or de-molding step.
As soon as the product inside te mould has cooled successfully, the molder managing the process can then take out the finished product from the mould. The technique is repeated from the start, providing a series of similar products.

For more information on the different rotational molding options offered for the Louisville KY 40201 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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