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rotational molding-West Falls-Rotational moulding refers to a plastic production technique that produces hollow stress-free items. The technique uses high temperatures and bi axial rotation to come up with seamless, one piece products that have many different designs, sizes and colors. This method is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The component that makes this different from other plastic manufacturing processes in that no pressure is required. It also has few rivals when it pertains to the production of large hollow products which are durable and inexpensive.There is a wide variety of product lines that are developed by this process including large water tanks, automobile items, complex designed medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in regards to design and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in West Falls NY 14170, 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-West Falls-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 York 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 West Falls New York 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 Process Components

This molding process has been used since earlier times for creatingvseverl products. Egyptians for instance, employed roto-molding methods in the producing of ceramics. The Swiss were also making use of this rotation type to generate hollow chocolate eggs. Some plastic items in the USA were created using this approach some time between 1940 and 1950. The process has however taken long to catch on because it was considered as being a rather slow-moving process

1. Mould fitting.
A predetermined volume of polymer in particle form is loaded into a hollow mold. The mold is usually built from cast aluminium or sheet steel material. The colour needed 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 design of plastic engineering.

Preheating of the oven starts, 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 secured and installed within the oven.

2. The heating and fusion phase.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 rotations per minute. One thing that is critical at this point is the period of time the mould will spend inside the oven. If it stays to long, the product will lose stability and durability, making a poor product. If it is removed from the oven too early, the polymer will not have melted correctly, which creates bubbles in the finalized product line.

3. Mould cooling.
When the component has sufficiently spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it shrinks slightly for ease of extraction from the mold. This is one more step that relies a lot on the ideal timing, since quick cooling decreases the material too quick, causing bending of the product.

4. The offloading or de-moulding phase.
When the component within te mold has cooled effectively, the molder handling the procedure can then remove the finished product from the mold. The process is repeated from the start, giving a number of exact product lines.

For more information on the different rotational molding options offered for the West Falls NY 14170 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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