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

rotomolding-Manville-Rotational moulding refers to a plastic production technique that generates hollow stress-free products. The function relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have various shapes, colors and sizes. This method is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this different from other plastic manufacturing procedures in that no pressure is called for. It also has few contenders when it comes to the production of large size hollow products which are long lasting and inexpensive.There is a wide range of product lines that are created by this process including big water tanks, automobile products, intricate designed medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in terms of 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 Manville RI 2838, 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 roto-molding 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 Manufacturing-Manville-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 Manville 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 Method in Detail

This molding process has been used since earlier times for creatingvseverl products. Egyptians for example, applied rotocasting procedures in the of ceramics. The Swiss were also working with this rotation style to make hollow chocolate eggs. Some plastic items in the USA were developed utilizing this technique some time between 1940 and 1950. Given that it was looked at to be a rather slow technique, the system has however taken long to catch on

1. Mould prep work.
A fixed amount of polymer in particle form is loaded into a hollow mould. The mould is usually made of cast aluminium or sheet steel material. The colour needed for the finished 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 type of plastic production.

Preheating 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 mold with the powdered polymer is then sealed and inserted inside the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The turning is done gradually, about 20 revolutions per min. Something that is important at this moment is the amount of time the mould will spend within the oven. If it stays to long, the material will lose stability and durability, producing a weak product. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which produces bubbles in the finished item.

3. Mould cooling.
When the component has sufficiently spent the correct 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 creates a cool mist. When the material cools, it shrinks somewhat for ease of removal from the mould. This is one more step that depends upon a lot on the ideal timing, since quick cooling decreases the material too fast, causing warping of the item.

4. The offloading or de-molding phase.
When the component within te mould has cooled effectively, the person managing the operation can then remove the finalized product from the mold. The function is repeated from the beginning, providing a number of exact items.

For more information on the different rotational rotomolding options offered for the Manville RI 2838 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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