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

roto-molding-Newton Center-Rotational molding pertains to a plastic manufacturing technique that generates hollow stress-free product lines. The procedure relies upon high temperatures and bi axial rotation to follow up with seamless, one piece products that have many different shapes, sizes and colors. This technique is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this unique from other plastic manufacturing methods because no pressure is called for. It also has few rivals when it pertains to the manufacture of large size hollow items which are long lasting and inexpensive.There is a variety of products that are produced by this process including big water tanks, automobile items, sophisticated molded medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is because of the flexibility in regards to 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 Newton Center MA 2459, 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 Molding-Newton Center-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 Newton Center 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 Process in Detail

This moulding procedure has been used since ancient times for creatingvseverl products. Egyptians for example, utilized rotational molding techniques in the creating of ceramics. The Swiss were also working with this rotation approach to create hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this procedure some time between 1940 and 1950. The procedure has however taken long to catch on because it was looked at as being a moderately slow process

1. Mold readying.
A fixed measure of polymer in grain form is loaded into a hollow mould. The mould is usually made from cast aluminium or sheet steel substance. The coloration desired for the final product 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 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 locked and inserted into the oven.

2. The heating up and fusion process.
Once within the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The turning is done gradually, about 20 rotations per sixty seconds. One thing that is crucial at this point is the amount of time the mould will spend within the oven. If it stays to long, the product will lose value and durability, making a poor product. If it is removed from the oven prematurely, the polymer will not have liquefied correctly, which creates bubbles in the completed item.

3. Mold cooling down.
When the material has sufficiently spent the correct amount 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 creates a cool mist. When the component cools, it reduces a little for ease of removal from the mould. This is yet another procedure that depends a lot on the right timing, since rapid cooling decreases the material too fast, causing warping of the item.

4. The offloading or de-molding phase.
When the material within te mould has cooled properly, the person taking care of the process can then extract the finalized item from the mould. The procedure is repeated from the start, providing a number of identical products.

For more information on the different rotational rotomolding options offered for the Newton Center MA 2459 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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