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

rotomolding-Brewster-Rotational moulding pertains to a plastic production solution that creates hollow stress-free products. The process relies on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have many different shapes, sizes and colors. This method is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The benefit that makes this different from other plastic manufacturing procedures in that no pressure is required. It also has few contenders when it comes to the manufacture of sizable hollow products which are long lasting and inexpensive.There is a wide range of products that are produced by this process including large water tanks, automobile items, sophisticated molded medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is because of the flexibility in regards to style and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Brewster NY 10509, 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

Plastic Molding-Brewster-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 Brewster 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 Rotomoulding Method in Detail

This moulding procedure has been used since ancient times for creatingvseverl items. Egyptians for example, utilized rotational molding procedures in the of ceramics. The Swiss were also making use of this rotation technique to make hollow chocolate eggs. Some plastic products in the USA were made utilizing this approach some time between 1940 and 1950. The technique has however taken long to catch on because it was looked at as being a somewhat slow-moving process

1. Mold readying.
A fixed amount of polymer in grain form is packed into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel material. The colour preferred for the finished product is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic production.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then secured and placed into the oven.

2. The heating up and fusion phase.
Once inside the oven, the mold is spun 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 rotations per minute. The main thing that is critical at this moment is the period of time the mold will spend inside the oven. If it overstays, the component will lose stability and strength, creating a faulty product. If it is removed from the oven too early, the polymer will not have liquefied properly, which develops bubbles in the finalized product line.

3. Mold cooling down.
When the component 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 a cool mist. When the component cools, it reduces somewhat for ease of extraction from the mould. This is one more step that relies a lot on the right timing, since quick cooling decreases the material too quick, causing bending of the material.

4. The discharging or de-moulding step.
As soon as the component inside te mould has cooled effectively, the molder managing the operation can then remove the finished item from the mold. The process is repeated from the start, supplying a number of exact items.

For more information on the different rotational molding options offered for the Brewster NY 10509 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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