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

rotational moulding-Gloucester-Rotational molding pertains to a plastic manufacturing technique that produces hollow stress-free product lines. The function depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of forms, colors and sizes. This procedure is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this different from other plastic manufacturing techniques because no pressure is needed. It also has few rivals when it pertains to the production of large hollow products which are long lasting and inexpensive.There is a wide range of product lines that are produced by this process including large size water tanks, automobile products, intricate molded medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in regards to design and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Gloucester MA 1930, 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 rotomoulding 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-Gloucester-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 Gloucester 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 Rotomolding Process Components

This molding technique has been used since earlier times for creatingvseverl product lines. Egyptians for example, utilized rotomoulding solutions in the making of ceramics. The Swiss were also making use of this rotation approach to create hollow chocolate eggs. Some plastic product lines in the USA were made using this procedure some time between 1940 and 1950. Given that it was viewed to be a rather slow procedure, the approach has however taken long to catch on

1. Mold readying.
A predetermined measure of polymer in particle form is filled into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel component. The color tone intended 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 style 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 locked and installed within the oven.

2. The heat and fusion step.
Once within the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done gradually, about 20 spins per minute. Something that is vital at this moment is the amount of time the mold will spend inside the oven. If it stays to long, the product will lose stability and strength, producing a weak product. If it is taken out from the oven too early, the polymer will not have liquefied correctly, which creates bubbles in the completed product.

3. Mould cooling.
When the component has completely spent the enough of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it shrinks slightly for ease of removal from the mould. This is one more procedure that depends upon a lot on the ideal timing, since quick cooling reduces the material too rapidly, causing warping of the item.

4. The unloading or de-molding step.
When the component within te mold has cooled adequately, the person handling the process can then remove the finalized product from the mold. The procedure is repeated from the start, providing a series of exact products.

For more information on the different rotational rotomolding options offered for the Gloucester MA 1930 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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