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

rotocasting-South Dartmouth-Rotational moulding pertains to a plastic production method that makes hollow stress-free product lines. The method uses high temperatures and bi axial rotation to come up with seamless, one piece products that have many different shapes, colors and sizes. This procedure is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The function that makes this unique from other plastic manufacturing methods in that no pressure is required. It also has few rivals when it pertains to the manufacture of sizable hollow items which are long-lasting and inexpensive.There is a variety of products that are developed by this process including large water tanks, automobile products, sophisticated designed medical items, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in terms of 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 South Dartmouth MA 2748, 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 rotocasting 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-South Dartmouth-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 South Dartmouth 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 Components

This moulding procedure has been used since ancient times for creatingvseverl products. Egyptians for example, worked with rotational molding techniques in the producing of ceramics. The Swiss were also making use of this rotation method to create hollow chocolate eggs. Some plastic products in the USA were created using this method some time between 1940 and 1950. Since it was looked at to be a rather slow-moving procedure, the method has however taken long to catch on

1. Mold prep work.
A fixed measure of polymer in particle form is packed into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel component. The coloring needed for the final item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Pre-heating 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 mould with the powdered polymer is then sealed and installed inside the oven.

2. The heat and fusion phase.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The spinning is done gradually, about 20 spins per sixty seconds. The main thing that is crucial at this moment is the period of time the mold will spend within the oven. If it overstays, the component will lose stability and durability, creating a poor item. If it is removed from the oven too early, the polymer will not have flowed properly, which produces bubbles in the finalized product.

3. Mould cooling down.
When the product has sufficiently spent the right amount of time in the oven, it is then removed 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 mould. This is yet another step that relies a lot on the right timing, since rapid cooling reduces the material too quick, causing bending of the material.

4. The offloading or de-moulding phase.
When the material inside te mold has cooled effectively, the molder handling the operation can then remove the completed product from the mold. The process is repeated from the start, providing a number of exact product lines.

For more information on the different rotational rotomolding options offered for the South Dartmouth MA 2748 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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