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

rotational moulding-Alton Bay-Rotational molding pertains to a plastic manufacturing technique that generates hollow stress-free items. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have varying shapes, sizes and colors. This method is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing techniques in that no pressure is required. It also has few competitors when it comes to the manufacture of sizable hollow items which are durable and inexpensive.There is a wide range of product lines that are developed by this process including big water tanks, automobile materials, sophisticated molded medical items, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of type and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Alton Bay NH 3810, 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 Molding-Alton Bay-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 Alton Bay 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 moulding technique has been used since early times for creatingvseverl product lines. Egyptians as an example, employed rotomoulding systems in the making of ceramics. The Swiss were also working with this rotation type to generate hollow chocolate eggs. Some plastic product lines in the USA were created using this procedure some time between 1940 and 1950. The technique has however taken long to catch on because it was looked at to be a pretty slow process

1. Mould preparation.
A fixed measure of polymer in particle form is packed into a hollow mold. The mold is usually crafted from cast aluminium or sheet steel material. The coloring intended for the final product is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic assembly.

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

2. The heating up and fusion step.
Once within the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The rotation is done slowly and gradually, about 20 revolutions per min. The main thing that is essential at this point is the period of time the mold will spend within the oven. If it stays to long, the product will lose value and durability, making a weak product. If it is removed from the oven prematurely, the polymer will not have flowed properly, which generates bubbles in the finished product line.

3. Mold cooling down.
When the material has completely spent the correct amount of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it shrinks somewhat for ease of removal from the mould. This is one more measure that depends upon a lot on the correct timing, since rapid cooling decreases the material too fast, causing bending of the product.

4. The removing or de-molding phase.
When the component within te mould has cooled successfully, the person managing the procedure can then extract the finished product from the mold. The technique is repeated from the start, providing a series of similar products.

For more information on the different rotational rotomolding options offered for the Alton Bay NH 3810 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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