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

rotomolding-Granville-Rotational moulding pertains to a plastic production technique that produces hollow stress-free product lines. The process relies upon high temperatures and bi axial rotation to follow up with seamless, one piece products that have a wide range of forms, colors and sizes. This method is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing techniques in that no pressure is required. It also has few contenders when it pertains to the creation of large hollow products which are long-lasting and inexpensive.There is a wide range of products that are generated by this process including big water tanks, automobile items, intricate molded medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility 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 Granville MA 1034, 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

Plastic Products-Granville-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 Granville 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 Rotomoulding Procedure in Detail

This molding system has been used since early times for creatingvseverl products. Egyptians for instance, employed roto-molding systems in the creating of ceramics. The Swiss were also utilizing this rotation format to generate hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this technique some time between 1940 and 1950. The process has however taken very long to take affect because it was considered as being a moderately slow-moving process

1. Mould prep work.
A fixed amount of polymer in grain form is packed into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel substance. The coloration intended 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 engineering.

Preheating 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 locked and inserted into the oven.

2. The heat and fusion procedure.
Once inside the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The spinning is done gradually, about 20 revolutions per sixty seconds. The main thing that is important at this moment is the amount of time the mold will spend inside the oven. If it overstays, the product will lose value and strength, making a poor product. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which produces bubbles in the finalized product line.

3. Mold cooling down.
When the material has completely spent the right amount of time in the oven, it is then removed for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it shrinks slightly for ease of extraction from the mold. This is yet another step that depends a lot on the right timing, since rapid cooling reduces the material too quickly, causing bending of the material.

4. The offloading or de-molding step.
When the product inside te mould has cooled effectively, the person managing the procedure can then take out the finished product from the mold. The procedure is repeated from the start, supplying a series of similar products.

For more information on the different rotational rotomolding options offered for the Granville MA 1034 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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