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

rotational moulding-Purdys-Rotational molding pertains to a plastic manufacturing technique that generates hollow stress-free items. The technique uses high temperatures and bi axial rotation to follow up with seamless, one piece products that have a wide range of forms, sizes and colors. This procedure is also known 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 that no pressure is required. It also has few competitors when it comes down to the production of large size hollow products which are long-lasting and inexpensive.There is a wide range of product lines that are developed by this process including big water tanks, automobile products, intricate shaped medical items, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the flexibility in regards to design and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Purdys NY 10578, 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 Manufacturing-Purdys-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 Purdys 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 technique has been used since early times for creatingvseverl product lines. Egyptians as an example, worked with rotational molding procedures in the making of ceramics. The Swiss were also utilizing this rotation approach to generate hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this procedure some time between 1940 and 1950. Given that it was thought of to be a fairly slow-moving method, the procedure has however taken long to become popular

1. Mold preparation.
A fixed measure of polymer in particle form is filled into a hollow mould. The mold is usually made from cast aluminium or sheet steel material. The color tone desired for the end 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 assembly.

Preheating 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 locked and positioned inside the oven.

2. The heating and fusion step.
Once within the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The spinning is done gradually, about 20 rotations per min. Something 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 stability and strength, making a poor product. If it is removed from the oven too early, the polymer will not have melted properly, which produces bubbles in the completed product.

3. Mould cooling down.
When the component has completely spent the right amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the product cools, it shrinks a little for ease of removal from the mould. This is yet another measure that depends a lot on the correct timing, since quick cooling reduces the material too quickly, causing warping of the item.

4. The discharging or de-molding phase.
Once the component inside te mold has cooled adequately, the person handling the operation can then extract the finalized item from the mold. The procedure is repeated from the start, making a series of exact items.

For more information on the different rotational molding options offered for the Purdys NY 10578 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 manufacturing

Local Resources

Production Example
Google Map