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rotational molding-Vienna-Rotational molding pertains to a plastic production practice that makes hollow stress-free products. The technique relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have varying forms, colors and sizes. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The benefit that makes this unique from other plastic manufacturing procedures because no pressure is needed. It also has few contenders when it pertains to the production of large hollow items which are resilient and inexpensive.There is a variety of product lines that are generated by this process including big water tanks, automobile products, sophisticated shaped medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in regards to style and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Vienna VA 22180, 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

Plastic Manufacturing-Vienna-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 Virginia 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 Vienna Virginia 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 process has been used since early times for creatingvseverl items. Egyptians for example, utilized rotocasting solutions in the of ceramics. The Swiss were also applying this rotation approach to generate hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this approach some time between 1940 and 1950. The process has however taken very long to take affect because it was considered to be a very slow process

1. Mold preparation.
A predetermined volume of polymer in grain form is loaded into a hollow mould. The mold is usually built from cast aluminium or sheet steel material. The color tone desired for the finished goods 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 design of plastic assembly.

Pre-heating of the oven starts, 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 inside the oven.

2. The heating and fusion procedure.
Once within the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The turning is done gradually, about 20 spins per min. The main thing that is crucial at this point is the amount of time the mould will spend within the oven. If it stays to long, the product will lose value and strength, making a poor product. If it is removed from the oven too early, the polymer will not have liquefied properly, which produces bubbles in the finalized product line.

3. Mould cooling.
When the material has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the material cools, it shrinks a little for ease of extraction from the mould. This is another step that depends upon a lot on the right timing, since rapid cooling reduces the material too quick, causing warping of the item.

4. The removing or de-moulding step.
As soon as the material inside te mould has cooled properly, the person handling the procedure can then extract the finalized product from the mould. The procedure is repeated from the beginning, providing a number of exact product lines.

For more information on the different rotational rotomolding options offered for the Vienna VA 22180 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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