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

rotational moulding-West Kingston-Rotational moulding pertains to a plastic production technique that makes hollow stress-free product lines. The function utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have different designs, colors and sizes. This technique is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The feature that makes this unique from other plastic manufacturing methods because no pressure is involved. It also has few contenders when it pertains to the manufacture of large size hollow items which are long-lasting and inexpensive.There is a wide range of products that are produced by this process including big water tanks, automobile materials, sophisticated shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the flexibility in terms of style and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in West Kingston RI 2892, 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 Molded-West Kingston-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 West Kingston 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 Rotomolding Process in Detail

This moulding technique has been used since earlier times for creatingvseverl product lines. Egyptians for instance, applied rotomoulding systems in the manufacturing of ceramics. The Swiss were also working with this rotation format to create hollow chocolate eggs. Some plastic product lines in the USA were made using this procedure some time between 1940 and 1950. The system has however taken long to catch on because it was looked at to be a somewhat slow-moving process

1. Mould readying.
A predetermined amount of polymer in grain form is filled into a hollow mould. The mold is usually made from cast aluminium or sheet steel material. The color tone wanted for the end goods 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 format of plastic manufacturing.

Pre-heating of the oven follows, and it can 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 locked and placed inside the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The turning is done gradually, about 20 rotations per min. The main thing that is important at this moment is the period of time the mould will spend inside the oven. If it stays to long, the material will lose stability and durability, producing a weak item. If it is taken out from the oven too early, the polymer will not have liquefied correctly, which produces bubbles in the finalized product line.

3. Mold cooling down.
When the component 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 generates a cool mist. When the component cools, it shrinks a little for ease of extraction from the mold. This is yet another step that depends upon a lot on the ideal timing, since rapid cooling reduces the material too quick, causing warping of the material.

4. The removing or de-moulding phase.
When the product within te mould has cooled properly, the molder managing the process can then remove the finalized product from the mould. The procedure is repeated from the start, supplying a number of similar product lines.

For more information on the different rotational rotomolding options offered for the West Kingston RI 2892 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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