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

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

The benefit that makes this unique from other plastic manufacturing techniques because no pressure is involved. It also has few competitors when it comes to the manufacture of large hollow products which are durable and inexpensive.There is a variety of products that are created by this process including large water tanks, automobile materials, intricate molded medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in regards to type and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Bristol RI 2809, 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

Custom Molded-Bristol-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 Bristol 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 Rotomoulding Procedure Components

This moulding procedure has been used since earlier times for creatingvseverl product lines. Egyptians as an example, utilized rotomoulding methods in the making of ceramics. The Swiss were also using this rotation technique to make hollow chocolate eggs. Some plastic items in the USA were developed using this approach some time between 1940 and 1950. Due to the fact that it was considered to be a very slow-moving process, the system has however taken long to catch on

1. Mold prep work.
A predetermined volume of polymer in particle form is loaded into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel material. The color tone needed for the end product is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic engineering.

Pre-heating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then locked and installed within the oven.

2. The heat and fusion procedure.
Once inside the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done slowly, about 20 rotations per sixty seconds. One thing that is critical at this point is the period of time the mold will spend within the oven. If it overstays, the component will lose stability and strength, producing a poor product. If it is extracted from the oven prematurely, the polymer will not have flowed correctly, which creates bubbles in the finalized item.

3. Mold cooling.
When the product has sufficiently spent the right 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 a cool mist. When the component cools, it reduces slightly for ease of removal from the mould. This is another step that depends a lot on the ideal timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The unloading or de-moulding phase.
As soon as the product within te mold has cooled properly, the molder handling the procedure can then remove the finalized item from the mold. 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 Bristol RI 2809 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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