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

rotomoulding-Lunenburg-Rotational moulding refers to a plastic production solution that generates hollow stress-free products. The process relies upon high temperatures and bi axial rotation to come up with seamless, one piece objects that have many different designs, colors and sizes. This procedure is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this unique from other plastic manufacturing techniques because no pressure is needed. It also has few contenders when it involves the creation of large hollow products which are durable and inexpensive.There is a wide range of product lines that are produced by this process including big water tanks, automobile products, sophisticated molded medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in regards to type and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Lunenburg MA 1462, 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

Custom Molding-Lunenburg-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 Lunenburg 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 Roto-Molding Method in Detail

This molding method has been used since early times for creatingvseverl items. Egyptians as an example, used rotomoulding methods in the making of ceramics. The Swiss were also making use of this rotation style to create hollow chocolate eggs. Some plastic products in the USA were manufactured using this approach some time between 1940 and 1950. The technique has however taken long to catch on because it was thought of to be a very slow-moving process

1. Mould readying.
A predetermined measure of polymer in powder form is packed into a hollow mould. The mould is usually made of cast aluminium or sheet steel component. The coloration 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 format of plastic manufacturing.

Pre-heating of the oven starts, 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 secured and inserted inside the oven.

2. The heating and fusion step.
Once placed into the oven, the mold is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done gradually, about 20 revolutions per min. The main thing that is important at this point is the period of time the mold will spend within the oven. If it overstays, the product will lose stability and durability, making a weak product. If it is removed from the oven prematurely, the polymer will not have flowed correctly, which generates bubbles in the finalized product line.

3. Mould cooling.
When the component has completely 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 creates a cool mist. When the material cools, it reduces somewhat for ease of removal from the mould. This is an additional measure that depends a lot on the correct timing, since quick cooling reduces the material too quick, causing warping of the product.

4. The un-loading or de-moulding step.
When the material inside te mould has cooled correctly, the person taking care of the procedure can then extract the completed product from the mould. The technique is repeated from the start, making a number of similar products.

For more information on the different rotational rotomolding options offered for the Lunenburg MA 1462 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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