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

rotational moulding-Hickman-Rotational moulding pertains to a plastic production practice that creates hollow stress-free products. The method depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have different designs, colors and sizes. This technique is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing processes that no pressure is involved. It also has few competitors when it comes down to the production of sizable hollow products which are durable and inexpensive.There is a wide range of items that are produced by this process including big water tanks, automobile products, sophisticated designed medical products, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in terms of type and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Hickman KY 42050, 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

Plastic Manufacturing-Hickman-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 Hickman 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 Rotomoulding Method Components

This molding operation has been used since ancient times for creatingvseverl items. Egyptians for example, employed rotomoulding solutions in the manufacturing of ceramics. The Swiss were also utilizing this rotation design to generate hollow chocolate eggs. Some plastic products in the USA were manufactured using this approach some time between 1940 and 1950. The procedure has however taken very long to take affect because it was considered to be a very slow-moving process

1. Mould prep work.
A predetermined measure of polymer in powder form is filled into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel component. The coloring intended for the finished item is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Preheating of the oven follows, and it may 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 secured and inserted within the oven.

2. The heat and fusion step.
Once within the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The turning is done slowly and gradually, about 20 rotations per sixty seconds. The main thing that is critical at this moment is the period of time the mould will spend inside the oven. If it stays to long, the product will lose stability and strength, creating a weak item. If it is taken out from the oven too early, the polymer will not have melted properly, which produces bubbles in the completed item.

3. Mould cooling.
When the component has completely spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it shrinks somewhat for ease of extraction from the mold. This is an additional measure that depends upon a lot on the ideal timing, since rapid cooling reduces the material too fast, causing bending of the item.

4. The offloading or de-moulding step.
As soon as the component inside te mould has cooled effectively, the molder handling the process can then remove the completed product from the mould. The process is repeated from the start, providing a number of exact products.

For more information on the different rotational molding options offered for the Hickman KY 42050 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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