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

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

The component that makes this unique from other plastic manufacturing processes in that no pressure is called for. It also has few competitors when it pertains to the creation of large size hollow items which are long-lasting and inexpensive.There is a wide range of items that are developed by this process including large size water tanks, automobile items, sophisticated molded medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Westford VT 5494, 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 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-Westford-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 Vermont 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 Westford Vermont 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 Procedure in Detail

This molding system has been used since ancient times for creatingvseverl product lines. Egyptians as an example, applied roto-molding solutions in the of ceramics. The Swiss were also working with this rotation design to make hollow chocolate eggs. Some plastic products in the USA were made utilizing this method some time between 1940 and 1950. The procedure has however taken very long to take affect because it was looked at to be a very slow process

1. Mould fitting.
A fixed amount of polymer in particle form is loaded into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel component. The color tone desired for the end item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic assembly.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then secured and placed within the oven.

2. The heating and fusion step.
Once within the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The turning is done slowly, about 20 spins per minute. Something that is critical at this moment is the amount of time the mould will spend inside the oven. If it stays to long, the material will lose value and durability, creating a weak product. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, which develops bubbles in the finished product.

3. Mould cooling.
When the product 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 generates a cool mist. When the component cools, it reduces somewhat for ease of extraction from the mould. This is an additional step that depends a lot on the correct timing, since rapid cooling reduces the material too rapidly, causing warping of the material.

4. The unloading or de-moulding step.
When the material within te mould has cooled properly, the person handling the operation can then take out the finished item from the mould. The procedure is repeated from the beginning, giving a number of identical product lines.

For more information on the different rotational rotomolding options offered for the Westford VT 5494 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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