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

rotocasting-Lakeville-Rotational molding pertains to a plastic manufacturing technique that produces hollow stress-free products. The procedure relies on high temperatures and bi axial rotation to come up with seamless, one piece products that have various designs, colors and sizes. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The benefit that makes this unique from other plastic manufacturing processes in that no pressure is required. It also has few rivals when it involves the production of large size hollow items which are durable and inexpensive.There is a wide range of items that are generated by this process including big water tanks, automobile products, intricate shaped medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the versatility in regards to type and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Lakeville MA 2347, 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

Plastic Manufacturing-Lakeville-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 Lakeville 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 technique has been used since earlier times for creatingvseverl products. Egyptians for example, applied rotocasting systems in the manufacturing of ceramics. The Swiss were also applying this rotation style to generate hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this method some time between 1940 and 1950. The procedure has however taken very long to catch on because it was thought of to be a moderately slow process

1. Mould preparation.
A fixed measure of polymer in powder form is loaded into a hollow mold. The mould is usually made of cast aluminium or sheet steel material. The coloration needed for the finished item 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 type of plastic manufacturing.

Preheating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then sealed and installed inside the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The spinning is done slowly and gradually, about 20 revolutions per min. One thing that is essential at this point is the amount of time the mold will spend inside the oven. If it overstays, the product will lose value and strength, making a poor item. If it is removed from the oven too early, the polymer will not have liquefied properly, which generates bubbles in the completed item.

3. Mold cooling down.
When the material has completely spent the enough 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 product cools, it shrinks somewhat for ease of removal from the mold. This is one more procedure that relies a lot on the ideal timing, since rapid cooling decreases the material too fast, causing bending of the material.

4. The un-loading or de-moulding step.
When the product within te mold has cooled properly, the person managing the procedure can then extract the finalized item from the mold. The procedure is repeated from the start, giving a number of identical products.

For more information on the different rotational rotomolding options offered for the Lakeville MA 2347 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