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

rotomolding-Cumberland-Rotational moulding refers to a plastic production practice that makes hollow stress-free product lines. The process uses high temperatures and bi axial rotation to come up with seamless, one piece products that have different designs, sizes and colors. This procedure is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The feature that makes this different from other plastic manufacturing procedures in that no pressure is involved. It also has few rivals when it comes down to the production of large hollow products which are resilient and inexpensive.There is a wide variety of products that are created by this process including big water tanks, automobile items, complex molded medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in regards to type and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Cumberland RI 2864, 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 rotational moulding 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-Cumberland-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 Rhode Island 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 Cumberland Rhode Island 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 Components

This moulding technique has been used since ancient times for creatingvseverl product lines. Egyptians as an example, used rotocasting procedures in the producing of ceramics. The Swiss were also working with this rotation approach to create hollow chocolate eggs. Some plastic items in the USA were made using this procedure some time between 1940 and 1950. Since it was looked at to be a relatively slow technique, the technique has however taken long to catch on

1. Mold readying.
A predetermined volume of polymer in powder form is filled into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The colour intended for the end 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 manufacturing.

Pre-heating 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 mold with the powdered polymer is then secured and installed inside the oven.

2. The heat and fusion process.
Once inside the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The spinning is done slowly and gradually, about 20 revolutions per min. One thing that is vital at this point is the period of time the mold will spend within the oven. If it overstays, the component will lose value and strength, generating a poor product. If it is removed from the oven too early, the polymer will not have flowed correctly, which generates bubbles in the completed item.

3. Mould cooling down.
When the component has sufficiently 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 creates a cool mist. When the material cools, it reduces slightly for ease of extraction from the mould. This is yet another measure that relies a lot on the right timing, since rapid cooling shrinks the material too fast, causing bending of the material.

4. The discharging or de-moulding step.
As soon as the component inside te mold has cooled correctly, the molder managing the operation can then remove the completed product from the mould. The procedure is repeated from the beginning, making a series of similar products.

For more information on the different rotational rotomolding options offered for the Cumberland RI 2864 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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