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

rotational moulding-Berea-Rotational moulding refers to a plastic manufacturing practice that makes hollow stress-free product lines. The method depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have a variety of forms, sizes and colors. This technique is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The feature that makes this different from other plastic manufacturing methods that no pressure is needed. It also has few rivals when it comes to the creation of large size hollow items which are long lasting and inexpensive.There is a wide range of products that are developed by this process including big water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in terms of style 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 Berea KY 40403, 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 roto-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-Berea-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 Berea 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 Roto-Molding Procedure Components

This moulding procedure has been used since early times for creatingvseverl products. Egyptians for example, utilized rotocasting systems in the manufacturing of ceramics. The Swiss were also applying this rotation technique to create hollow chocolate eggs. Some plastic products in the USA were created utilizing this approach some time between 1940 and 1950. The system has however taken long to catch on because it was looked at as being a relatively slow process

1. Mould readying.
A predetermined volume of polymer in grain form is filled into a hollow mould. The mold is usually built from cast aluminium or sheet steel substance. The coloration 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 manufacturing.

Pre-heating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then locked and positioned within the oven.

2. The heating up and fusion process.
Once inside the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The turning is done gradually, about 20 rotations per minute. One thing that is vital at this moment is the period of time the mould will spend inside the oven. If it overstays, the component will lose value and strength, making a weak item. If it is taken out from the oven too early, the polymer will not have liquefied correctly, which develops bubbles in the finalized product line.

3. Mold cooling down.
When the component has completely spent the right 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 product cools, it shrinks slightly for ease of extraction from the mould. This is an additional step that depends upon a lot on the right timing, since quick cooling shrinks the material too quick, causing bending of the material.

4. The un-loading or de-moulding phase.
As soon as the material inside te mold has cooled effectively, the molder taking care of the operation can then take out the finalized product from the mould. The procedure is repeated from the beginning, providing a number of exact items.

For more information on the different rotational molding options offered for the Berea KY 40403 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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