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

roto-molding-Norwell-Rotational moulding refers to a plastic production technique that makes hollow stress-free items. The procedure relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have a wide range of forms, sizes and colors. This technique is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The component that makes this unique from other plastic manufacturing techniques that no pressure is required. It also has few competitors when it comes to the creation of sizable hollow items which are resilient and inexpensive.There is a wide range of product lines that are generated by this process including large size water tanks, automobile items, sophisticated shaped medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in regards to design and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Norwell MA 2061, 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-Norwell-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 Norwell 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 system has been used since earlier times for creatingvseverl products. Egyptians for instance, worked with rotocasting methods in the producing of ceramics. The Swiss were also employing this rotation technique to make hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this approach some time between 1940 and 1950. Given that it was viewed to be a basically slow-moving approach, the process has however taken long to become popular

1. Mold preparation.
A fixed volume of polymer in grain form is filled into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The coloring chosen for the end item is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style 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 mould with the powdered polymer is then secured and positioned inside the oven.

2. The heat and fusion step.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 rotations per minute. Something that is essential at this point is the period of time the mould will spend inside the oven. If it stays to long, the component will lose stability and durability, making a weak product. If it is removed from the oven too early, the polymer will not have melted properly, which creates bubbles in the completed product.

3. Mold cooling.
When the component has completely spent the correct amount of time in the oven, it is then extracted 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 reduces slightly for ease of removal from the mould. This is another step that depends a lot on the correct timing, since quick cooling decreases the material too quick, causing warping of the material.

4. The un-loading or de-molding phase.
As soon as the component within te mold has cooled properly, the person taking care of the process can then remove the finished item from the mold. The technique is repeated from the start, supplying a number of identical products.

For more information on the different rotational rotomolding options offered for the Norwell MA 2061 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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