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

rotocasting-Patterson-Rotational moulding pertains to a plastic manufacturing method that makes hollow stress-free items. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece objects that have various shapes, sizes and colors. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The feature that makes this unique from other plastic manufacturing processes in that no pressure is involved. It also has few contenders when it pertains to the creation of large size hollow items which are long-lasting and inexpensive.There is a wide variety of products that are generated by this process including large size water tanks, automobile products, complex designed medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in regards to style and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Patterson NY 12563, 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 rotocasting 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-Patterson-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 Patterson 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 Rotomolding Process Components

This molding process has been used since early times for creatingvseverl product lines. Egyptians as an example, utilized rotocasting methods in the producing of ceramics. The Swiss were also using this rotation type to create hollow chocolate eggs. Some plastic products in the USA were developed utilizing this procedure some time between 1940 and 1950. Considering that it was viewed to be a somewhat slow procedure, the technique has however taken long to catch on

1. Mold prep work.
A predetermined volume of polymer in grain form is packed into a hollow mould. The mould is usually built from cast aluminium or sheet steel substance. The coloring intended for the finished goods 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 engineering.

Pre-heating of the oven starts, and it can 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 positioned inside the oven.

2. The heating up and fusion step.
Once placed into the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The spinning is done gradually, about 20 revolutions per minute. The main thing that is crucial at this point is the period of time the mould will spend within the oven. If it overstays, the product will lose value and durability, creating a faulty product. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which creates bubbles in the finalized item.

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 creates a cool mist. When the component cools, it shrinks a little for ease of removal from the mold. This is yet another procedure that depends a lot on the ideal timing, since rapid cooling decreases the material too fast, causing bending of the material.

4. The unloading or de-moulding step.
Once the product within te mold has cooled successfully, the molder managing the process can then remove the finished product from the mold. The function is repeated from the beginning, making a series of identical products.

For more information on the different rotational molding options offered for the Patterson NY 12563 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic molding

Local Resources

Production Example
Google Map