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

rotational moulding-West Kennebunk-Rotational moulding refers to a plastic manufacturing practice that produces hollow stress-free product lines. The method uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have a wide range of forms, sizes and colors. This technique is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The feature that makes this different from other plastic manufacturing techniques that no pressure is needed. It also has few rivals when it comes to the creation of large size hollow products which are long lasting and inexpensive.There is a wide range of items that are created by this process including large water tanks, automobile materials, sophisticated designed medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of design and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in West Kennebunk ME 4094, 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

Custom Molding-West Kennebunk-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 West Kennebunk 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 molding operation has been used since ancient times for creatingvseverl items. Egyptians for instance, used roto-molding systems in the making of ceramics. The Swiss were also making use of this rotation method to make hollow chocolate eggs. Some plastic product lines in the USA were created using this approach some time between 1940 and 1950. The technique has however taken very long to take affect because it was thought of to be a very slow process

1. Mold fitting.
A predetermined amount of polymer in powder form is packed into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The color tone intended for the final 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 manufacturing.

Preheating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mold with the powdered polymer is then sealed and put within the oven.

2. The heating and fusion procedure.
Once within the oven, the mold is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done slowly, about 20 spins per min. The main thing that is essential at this point is the period of time the mould will spend within the oven. If it overstays, the component will lose value and durability, generating a faulty product. If it is extracted from the oven prematurely, the polymer will not have flowed properly, which produces bubbles in the finalized item.

3. Mould cooling down.
When the component has sufficiently spent the correct 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 generates a cool mist. When the product cools, it reduces a little for ease of extraction from the mold. This is another step that depends a lot on the ideal timing, since rapid cooling shrinks the material too rapidly, causing warping of the material.

4. The offloading or de-moulding step.
When the component inside te mould has cooled properly, the person managing the process can then extract the completed item from the mold. The process is repeated from the beginning, supplying a number of similar items.

For more information on the different rotational rotomolding options offered for the West Kennebunk ME 4094 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic molding

Local Resources

Production Example
Google Map