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

rotocasting-Littleton-Rotational moulding pertains to a plastic production method that creates hollow stress-free product lines. The process utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have many different designs, colors and sizes. This method is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this different from other plastic manufacturing methods in that no pressure is needed. It also has few contenders when it comes to the manufacture of sizable hollow products which are durable and inexpensive.There is a wide range of products that are developed by this process including large water tanks, automobile materials, intricate shaped medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in terms of type 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 Littleton NH 3561, 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

Plastic Molding-Littleton-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 Littleton 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 Procedure Components

This molding process has been used since earlier times for creatingvseverl products. Egyptians for example, utilized roto-molding solutions in the producing of ceramics. The Swiss were also making use of this rotation format to create hollow chocolate eggs. Some plastic items in the USA were manufactured using this method some time between 1940 and 1950. Given that it was viewed to be a somewhat slow method, the approach has however taken long to become popular

1. Mold readying.
A fixed measure of polymer in particle form is packed into a hollow mold. The mould is usually made of cast aluminium or sheet steel material. The coloration needed 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 style of plastic assembly.

Pre-heating of the oven follows, and it may 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 locked and inserted into the oven.

2. The heat and fusion process.
Once within the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done gradually, about 20 revolutions per min. The main thing that is important at this moment is the amount of time the mould will spend inside the oven. If it overstays, the material will lose stability and strength, creating a weak product. If it is taken out from the oven prematurely, the polymer will not have melted correctly, which develops bubbles in the finished product line.

3. Mold cooling down.
When the component has completely spent the enough 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 product cools, it shrinks a little for ease of extraction from the mold. This is yet another measure that depends a lot on the correct timing, since quick cooling reduces the material too quickly, causing bending of the material.

4. The offloading or de-moulding phase.
Once the material inside te mould has cooled properly, the person handling the process can then extract the completed item from the mould. The procedure is repeated from the beginning, supplying a number of similar items.

For more information on the different rotational rotomolding options offered for the Littleton NH 3561 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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