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

rotational molding-Loudon-Rotational moulding pertains to a plastic production solution that makes hollow stress-free items. The function utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have various forms, colors and sizes. This method is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing techniques that no pressure is called for. It also has few rivals when it comes to the manufacture of sizable hollow items which are resilient and inexpensive.There is a wide variety of products that are generated by this process including large size water tanks, automobile products, complex molded medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of style 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 Loudon NH 3307, 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 moulding 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-Loudon-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 Loudon 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 Roto-Molding Process Components

This molding method has been used since earlier times for creatingvseverl product lines. Egyptians for instance, utilized roto-molding procedures in the of ceramics. The Swiss were also making use of this rotation method to make hollow chocolate eggs. Some plastic items in the USA were developed using this method some time between 1940 and 1950. The system has however taken very long to take affect because it was looked at as being a pretty slow process

1. Mold preparation.
A fixed amount of polymer in powder form is packed into a hollow mould. The mould is usually made of cast aluminium or sheet steel substance. The colour desired 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 design of plastic production.

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

2. The heating and fusion process.
Once within the oven, the mould is spun 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 revolutions per minute. One thing that is critical at this point is the period of time the mould will spend within the oven. If it overstays, the material will lose value and durability, making a faulty product. If it is removed from the oven prematurely, the polymer will not have flowed correctly, which creates bubbles in the finished item.

3. Mold cooling.
When the material has sufficiently 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 creates a cool mist. When the component cools, it shrinks slightly for ease of removal from the mold. This is one more step that depends a lot on the ideal timing, since rapid cooling shrinks the material too fast, causing warping of the material.

4. The discharging or de-moulding step.
As soon as the material inside te mold has cooled effectively, the person managing the process can then take out the finished item from the mould. The process is repeated from the start, supplying a number of exact product lines.

For more information on the different rotational rotomolding options offered for the Loudon NH 3307 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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