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

rotocasting-Kingston-Rotational molding pertains to a plastic production solution that produces hollow stress-free product lines. The method relies on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different shapes, colors and sizes. This procedure is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The attribute that makes this unique from other plastic manufacturing processes in that no pressure is required. It also has few rivals when it involves the creation of large size hollow products which are long lasting and inexpensive.There is a wide range of items that are generated by this process including large size water tanks, automobile materials, sophisticated molded medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the versatility in terms of style and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Kingston NH 3848, 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 rotomolding 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-Kingston-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 Kingston 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 Components

This moulding technique has been used since early times for creatingvseverl products. Egyptians for example, employed rotomoulding systems in the of ceramics. The Swiss were also making use of this rotation design to make hollow chocolate eggs. Some plastic items in the USA were made utilizing this technique some time between 1940 and 1950. The procedure has however taken long to take affect because it was considered to be a rather slow process

1. Mold prep work.
A predetermined measure of polymer in powder form is filled into a hollow mold. The mould is usually constructed from cast aluminium or sheet steel substance. The coloring needed for the finished 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 style of plastic manufacturing.

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 sealed and put inside the oven.

2. The heat and fusion process.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The turning is done slowly, about 20 rotations per min. One thing that is important at this moment is the amount of time the mold will spend within the oven. If it stays to long, the material will lose stability and strength, creating a faulty item. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which produces bubbles in the finalized product line.

3. Mould cooling.
When the component has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it shrinks slightly for ease of extraction from the mould. This is yet another procedure that depends upon a lot on the correct timing, since quick cooling shrinks the material too fast, causing bending of the product.

4. The discharging or de-moulding phase.
As soon as the product inside te mould has cooled properly, the molder taking care of the procedure can then take out the finished product from the mould. The procedure is repeated from the beginning, making a series of exact products.

For more information on the different rotational rotomolding options offered for the Kingston NH 3848 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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