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

rotational molding-Danville-Rotational moulding pertains to a plastic manufacturing method that makes hollow stress-free products. The technique relies on high temperatures and bi axial rotation to come up with seamless, one piece products that have different shapes, colors and sizes. This technique is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The feature that makes this unique from other plastic manufacturing methods in that no pressure is required. It also has few rivals when it comes down to the creation of sizable hollow products which are durable and inexpensive.There is a variety of items that are produced by this process including large size water tanks, automobile items, intricate designed medical products, recreation equipment, toys, canoes, industrialized 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 Danville NH 3819, 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 roto-molding 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-Danville-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 Danville 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 molding procedure has been used since earlier times for creatingvseverl items. Egyptians for instance, worked with roto-molding procedures in the creating of ceramics. The Swiss were also making use of this rotation format to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this method some time between 1940 and 1950. The process has however taken long to catch on because it was looked at to be a pretty slow-moving process

1. Mold readying.
A fixed measure of polymer in grain form is loaded into a hollow mould. The mould is usually made from cast aluminium or sheet steel substance. The color wanted 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 type of plastic assembly.

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

2. The heat and fusion step.
Once within the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done slowly, about 20 spins per minute. Something that is vital 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, creating a faulty item. If it is removed from the oven prematurely, the polymer will not have liquefied correctly, which generates bubbles in the finalized product line.

3. Mold cooling.
When the material has completely spent the right 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 a cool mist. When the product cools, it shrinks a little for ease of extraction from the mold. This is one more step that depends upon a lot on the right timing, since rapid cooling decreases the material too fast, causing warping of the material.

4. The discharging or de-molding phase.
As soon as the component inside te mold has cooled effectively, the molder handling the procedure can then remove the finished item from the mold. The procedure is repeated from the beginning, providing a number of exact items.

For more information on the different rotational rotomolding options offered for the Danville NH 3819 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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