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

roto-molding-Worcester-Rotational moulding refers to a plastic production technique that creates hollow stress-free items. The process uses high temperatures and bi axial rotation to come up with seamless, one piece products that have a wide range of forms, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The benefit that makes this unique from other plastic manufacturing methods that no pressure is called for. It also has few contenders when it pertains to the creation of sizable hollow items which are resilient and inexpensive.There is a wide range of product lines that are created by this process including big water tanks, automobile items, complex molded medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in terms of style and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Worcester MA 1601, 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 Molded-Worcester-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 Massachusetts 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 Worcester Massachusetts 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 system has been used since earlier times for creatingvseverl products. Egyptians for instance, applied rotomoulding procedures in the producing of ceramics. The Swiss were also employing this rotation approach to create hollow chocolate eggs. Some plastic items in the USA were created using this technique some time between 1940 and 1950. The technique has however taken long to take affect because it was looked at as being a pretty slow-moving process

1. Mold preparation.
A fixed measure of polymer in particle form is filled into a hollow mold. The mould is usually built from cast aluminium or sheet steel substance. The coloring preferred for the finished 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 design of plastic production.

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 mold with the powdered polymer is then locked and installed into the oven.

2. The heat and fusion process.
Once placed into the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The turning is done gradually, about 20 revolutions per minute. One thing that is crucial at this moment is the period of time the mold will spend inside the oven. If it stays to long, the product will lose stability and strength, generating a poor item. If it is removed from the oven too early, the polymer will not have flowed correctly, which generates bubbles in the completed item.

3. Mold cooling.
When the component has sufficiently 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 generates a cool mist. When the component cools, it shrinks somewhat for ease of extraction from the mould. This is one more measure that depends a lot on the correct timing, since rapid cooling shrinks the material too rapidly, causing warping of the product.

4. The offloading or de-molding phase.
As soon as the component within te mold has cooled successfully, the person handling the process can then extract the finalized item from the mould. The technique is repeated from the beginning, making a series of exact products.

For more information on the different rotational rotomolding options offered for the Worcester MA 1601 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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