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

rotational moulding-Somersworth-Rotational moulding refers to a plastic manufacturing practice that produces hollow stress-free product lines. The method relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a variety of shapes, colors and sizes. This procedure is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing procedures that no pressure is called for. It also has few rivals when it comes down to the creation of sizable hollow products which are resilient and inexpensive.There is a variety of items that are developed by this process including big water tanks, automobile materials, sophisticated shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of type 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 Somersworth NH 3878, 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 Molding-Somersworth-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 New Hampshire 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 Somersworth New Hampshire 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 Process in Detail

This moulding system has been used since earlier times for creatingvseverl product lines. Egyptians for instance, used roto-molding systems in the making of ceramics. The Swiss were also working with this rotation design to create hollow chocolate eggs. Some plastic items in the USA were made utilizing this procedure some time between 1940 and 1950. Given that it was thought of to be a very slow-moving process, the process has however taken long to catch on

1. Mold fitting.
A predetermined quantity of polymer in particle form is loaded into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The coloration 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.

Preheating of the oven starts, and it can 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 locked and placed within the oven.

2. The heat and fusion step.
Once inside the oven, the mold is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The spinning is done gradually, about 20 rotations per min. One thing that is crucial at this moment is the amount of time the mould will spend inside the oven. If it stays to long, the product will lose stability and durability, producing a faulty item. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, which creates bubbles in the finalized item.

3. Mold cooling.
When the component has sufficiently spent the correct amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the material cools, it shrinks slightly for ease of extraction from the mold. This is an additional procedure that relies a lot on the ideal timing, since quick cooling shrinks the material too quick, causing warping of the product.

4. The un-loading or de-moulding phase.
As soon as the product inside te mould has cooled adequately, the molder handling the process can then remove the finalized product from the mould. The process is repeated from the start, supplying a series of similar products.

For more information on the different rotational rotomolding options offered for the Somersworth NH 3878 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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