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

rotational molding-Lyme-Rotational molding pertains to a plastic production method that creates hollow stress-free products. The procedure depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have a wide range of designs, colors and sizes. This method is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this unique from other plastic manufacturing processes because no pressure is required. It also has few rivals when it pertains to the production of large size hollow items which are resilient and inexpensive.There is a wide variety of items that are developed by this process including large size water tanks, automobile materials, sophisticated molded medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of style and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Lyme NH 3768, 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 rotomoulding 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-Lyme-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 Lyme 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 Rotomolding Method in Detail

This moulding procedure has been used since earlier times for creatingvseverl items. Egyptians for instance, utilized rotomoulding systems in the of ceramics. The Swiss were also applying this rotation style to create hollow chocolate eggs. Some plastic items in the USA were created utilizing this approach some time between 1940 and 1950. The procedure has however taken very long to take affect because it was considered to be a relatively slow-moving process

1. Mould readying.
A predetermined volume of polymer in particle form is loaded into a hollow mold. The mold is usually constructed from cast aluminium or sheet steel material. The color tone preferred for the final item 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 manufacturing.

Pre-heating 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 mold with the powdered polymer is then sealed and inserted within the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The turning is done slowly, about 20 spins per minute. One thing that is critical at this moment is the period of time the mold will spend inside the oven. If it stays to long, the product will lose stability and strength, creating a faulty product. If it is taken out from the oven too early, the polymer will not have melted properly, which produces bubbles in the finalized product line.

3. Mold cooling.
When the component has sufficiently spent the correct 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 creates a cool mist. When the material cools, it reduces somewhat for ease of extraction from the mould. This is one more measure that depends upon a lot on the ideal timing, since quick cooling decreases the material too quick, causing warping of the product.

4. The unloading or de-molding phase.
As soon as the material within te mold has cooled successfully, the person taking care of the operation can then take out the finished item from the mould. The technique is repeated from the beginning, making a number of identical product lines.

For more information on the different rotational rotomolding options offered for the Lyme NH 3768 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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