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

rotocasting-Burwell-Rotational moulding pertains to a plastic production solution that produces hollow stress-free products. The method uses high temperatures and bi axial rotation to come up with seamless, one piece products that have various forms, sizes and colors. This method is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The benefit that makes this unique from other plastic manufacturing processes that no pressure is needed. It also has few rivals when it comes to the manufacture of large size hollow products which are long-lasting and inexpensive.There is a wide range of product lines that are developed by this process including big water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in terms of design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Burwell NE 68823, 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 moulding 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-Burwell-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 Nebraska 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 Burwell Nebraska 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 in Detail

This molding system has been used since early times for creatingvseverl product lines. Egyptians as an example, worked with rotational molding methods in the producing of ceramics. The Swiss were also working with this rotation format to make hollow chocolate eggs. Some plastic products in the USA were manufactured using this approach some time between 1940 and 1950. The system has however taken very long to catch on because it was considered to be a rather slow process

1. Mold preparation.
A fixed quantity of polymer in grain form is packed into a hollow mould. The mould is usually made of cast aluminium or sheet steel material. The color tone needed for the finished item 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 design of plastic engineering.

Pre-heating 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 mold with the powdered polymer is then sealed and put into the oven.

2. The heating and fusion step.
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 mold. The turning is done slowly, about 20 rotations per sixty seconds. The main thing that is important at this moment is the period of time the mould will spend inside the oven. If it overstays, the product will lose value and durability, creating a poor item. If it is removed from the oven too early, the polymer will not have liquefied correctly, which develops bubbles in the completed product.

3. Mold cooling down.
When the material has completely spent the enough 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 generates a cool mist. When the material cools, it reduces slightly for ease of extraction from the mold. This is an additional measure that depends upon a lot on the right timing, since quick cooling reduces the material too rapidly, causing warping of the product.

4. The unloading or de-molding step.
Once the material within te mold has cooled adequately, the molder managing the process can then take out the finalized item from the mold. The process is repeated from the beginning, providing a series of exact items.

For more information on the different rotational rotomolding options offered for the Burwell NE 68823 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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