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

rotocasting-Windham-Rotational molding pertains to a plastic production solution that makes hollow stress-free items. The procedure uses high temperatures and bi axial rotation to follow up with seamless, one piece items that have many different forms, colors and sizes. This procedure is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The attribute that makes this different from other plastic manufacturing techniques in that no pressure is called for. It also has few rivals when it comes down to the manufacture of sizable hollow products which are resilient and inexpensive.There is a variety of products that are created by this process including large water tanks, automobile items, intricate shaped medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in regards to type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Windham NH 3087, 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

Custom Molding-Windham-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 Windham 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 Procedure in Detail

This molding process has been used since earlier times for creatingvseverl items. Egyptians as an example, utilized rotocasting procedures in the making of ceramics. The Swiss were also working with this rotation format to create hollow chocolate eggs. Some plastic items in the USA were developed using this procedure some time between 1940 and 1950. The process has however taken very long to catch on because it was thought of as being a relatively slow-moving process

1. Mould readying.
A fixed amount of polymer in powder form is loaded into a hollow mold. The mould is usually constructed from cast aluminium or sheet steel substance. The color intended for the final product 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 design of plastic production.

Pre-heating of the oven follows, 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 secured and put into the oven.

2. The heat and fusion process.
Once inside the oven, the mould is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done slowly, about 20 revolutions per min. 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 component will lose value and durability, making a faulty product. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which produces bubbles in the completed product.

3. Mold cooling down.
When the product has completely 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 a cool mist. When the material cools, it shrinks somewhat for ease of extraction from the mould. This is an additional step that depends upon a lot on the right timing, since quick cooling decreases the material too quickly, causing warping of the item.

4. The un-loading or de-moulding phase.
As soon as the component within te mold has cooled successfully, the person managing the process can then remove the completed item from the mould. The technique is repeated from the beginning, giving a number of similar products.

For more information on the different rotational rotomolding options offered for the Windham NH 3087 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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