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

rotational moulding-Brooks-Rotational moulding refers to a plastic manufacturing practice that creates 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 many different forms, colors and sizes. This procedure is also called rotomolding 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 because no pressure is required. It also has few contenders when it involves the creation of large hollow items which are durable and inexpensive.There is a variety of product lines that are generated by this process including large size water tanks, automobile products, sophisticated molded medical items, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in regards to type 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 Brooks ME 4921, 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 Manufacturing-Brooks-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 Maine 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 Brooks Maine 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 Method Components

This moulding process has been used since earlier times for creatingvseverl products. Egyptians as an example, used rotational molding solutions in the producing of ceramics. The Swiss were also working with this rotation format to create hollow chocolate eggs. Some plastic product lines in the USA were made using this procedure some time between 1940 and 1950. Because it was thought of to be a fairly slow-moving technique, the method has however taken long to become popular

1. Mould prep work.
A predetermined measure of polymer in grain form is filled into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel component. The colour chosen 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 style of plastic engineering.

Pre-heating of the oven starts, and it can 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 sealed and placed into the oven.

2. The heat and fusion process.
Once inside the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The rotation is done slowly, about 20 spins per sixty seconds. Something that is vital at this moment is the period of time the mould will spend within the oven. If it overstays, the component will lose value and strength, generating a weak product. If it is taken out from the oven too early, the polymer will not have liquefied correctly, which generates bubbles in the completed product.

3. Mold cooling.
When the component has sufficiently spent the correct amount of time in the oven, it is then removed for cooling. This may be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it reduces a little for ease of removal from the mold. This is one more procedure that depends upon a lot on the correct timing, since rapid cooling reduces the material too quick, causing warping of the product.

4. The removing or de-molding step.
Once the material within te mould has cooled effectively, the person handling the procedure can then remove the finished product from the mould. The procedure is repeated from the start, making a series of similar items.

For more information on the different rotational rotomolding options offered for the Brooks ME 4921 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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