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

rotational moulding-Bradford-Rotational molding pertains to a plastic manufacturing solution that makes hollow stress-free product lines. The technique relies on high temperatures and bi axial rotation to follow up with seamless, one piece products that have several forms, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The component that makes this unique from other plastic manufacturing methods because no pressure is called for. It also has few contenders when it comes to the manufacture of sizable hollow products which are resilient and inexpensive.There is a variety of products that are generated by this process including big water tanks, automobile items, complex shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in terms of design and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Bradford VT 5033, 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 Products-Bradford-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 Vermont 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 Bradford Vermont 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 Rotomolding Procedure Components

This molding system has been used since early times for creatingvseverl product lines. Egyptians for example, utilized rotomoulding procedures in the producing of ceramics. The Swiss were also employing this rotation technique to create hollow chocolate eggs. Some plastic items in the USA were developed using this method some time between 1940 and 1950. The system has however taken long to take affect because it was looked at to be a pretty slow-moving process

1. Mould preparation.
A predetermined measure of polymer in powder form is packed into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel substance. The coloration wanted for the final item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then secured and positioned inside the oven.

2. The heating up and fusion step.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done gradually, about 20 rotations per min. The main thing that is vital at this moment is the period of time the mold will spend within the oven. If it overstays, the product will lose stability and durability, creating a poor item. If it is extracted from the oven too early, the polymer will not have melted correctly, which produces bubbles in the finalized product.

3. Mold cooling down.
When the component has completely spent the right amount 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 component cools, it reduces a little for ease of extraction from the mould. This is another step that depends upon a lot on the ideal timing, since rapid cooling reduces the material too quick, causing bending of the item.

4. The unloading or de-moulding step.
Once the material inside te mould has cooled adequately, the person taking care of the procedure can then remove the finalized product from the mould. The function is repeated from the beginning, giving a number of identical product lines.

For more information on the different rotational rotomolding options offered for the Bradford VT 5033 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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