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

rotocasting-Bellevue-Rotational molding refers to a plastic manufacturing solution that produces hollow stress-free product lines. The procedure utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have varying forms, sizes and colors. This procedure is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing methods in that no pressure is required. It also has few competitors when it pertains to the production of sizable hollow products which are durable and inexpensive.There is a wide range of items that are generated by this process including large size water tanks, automobile materials, sophisticated designed medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in terms of design 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 Bellevue NE 68005, 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 rotocasting 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 Products-Bellevue-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 Bellevue 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 Rotomoulding Procedure in Detail

This moulding technique has been used since earlier times for creatingvseverl items. Egyptians for example, utilized rotational molding procedures in the making of ceramics. The Swiss were also working with this rotation design to make hollow chocolate eggs. Some plastic products in the USA were made using this approach some time between 1940 and 1950. Because it was considered to be a relatively slow system, the procedure has however taken long to catch on

1. Mold preparation.
A predetermined measure of polymer in powder form is packed into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel component. The color needed for the end product 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 production.

Preheating 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 mould with the powdered polymer is then secured and positioned within the oven.

2. The heating up and fusion phase.
Once inside 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 rotation is done slowly and gradually, about 20 revolutions per min. The main thing that is important at this point is the amount of time the mould will spend within the oven. If it overstays, the material will lose stability and durability, generating a poor item. If it is taken out from the oven prematurely, the polymer will not have liquefied correctly, which creates bubbles in the completed product.

3. Mould cooling.
When the product has sufficiently 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 creates a cool mist. When the material cools, it shrinks slightly for ease of removal from the mold. This is an additional step that relies a lot on the correct timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The un-loading or de-molding phase.
Once the component inside te mold has cooled successfully, the person handling the procedure can then take out the completed product from the mold. The procedure is repeated from the start, making a series of identical product lines.

For more information on the different rotational rotomolding options offered for the Bellevue NE 68005 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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