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

rotomoulding-Lexington-Rotational moulding refers to a plastic manufacturing method that produces hollow stress-free products. The process relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have a wide range of shapes, colors and sizes. This method is also referred to 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 methods in that no pressure is called for. It also has few rivals when it pertains to the manufacture of sizable hollow items which are durable and inexpensive.There is a wide variety of items that are created by this process including large size water tanks, automobile materials, intricate shaped medical items, leisure equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in terms of style and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Lexington MA 2173, 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 roto-molding 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 Molded-Lexington-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 Lexington 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 Method Components

This molding operation has been used since early times for creatingvseverl product lines. Egyptians for instance, worked with rotocasting techniques in the creating of ceramics. The Swiss were also employing this rotation format to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this technique some time between 1940 and 1950. Since it was considered to be a somewhat slow technique, the process has however taken long to become popular

1. Mold prep work.
A predetermined volume of polymer in powder form is loaded into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel substance. The color wanted 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 type of plastic assembly.

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

2. The heating up and fusion phase.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The spinning is done gradually, about 20 revolutions per min. Something that is critical at this moment is the period of time the mold will spend inside the oven. If it stays to long, the material will lose stability and durability, producing a faulty item. If it is taken out from the oven too early, the polymer will not have flowed correctly, which generates bubbles in the finalized product line.

3. Mold cooling.
When the product has completely spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the material cools, it reduces somewhat for ease of removal from the mould. This is another measure that depends upon a lot on the ideal timing, since rapid cooling reduces the material too fast, causing bending of the material.

4. The un-loading or de-moulding phase.
When the component inside te mold has cooled adequately, the molder taking care of the process can then take out the finished product from the mould. The procedure is repeated from the beginning, supplying a series of identical products.

For more information on the different rotational rotomolding options offered for the Lexington MA 2173 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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