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

rotomoulding-Northfield-Rotational molding refers to a plastic manufacturing procedure that makes hollow stress-free items. The procedure uses high temperatures and bi axial rotation to follow up with seamless, one piece items that have various forms, sizes and colors. This method is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The function that makes this different from other plastic manufacturing processes because no pressure is required. It also has few contenders when it comes down to the creation of large hollow items which are durable and inexpensive.There is a variety of items that are produced by this process including large water tanks, automobile items, complex designed medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is due to the flexibility in regards to type 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 Northfield NJ 8225, 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 Products-Northfield-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 Jersey 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 Northfield New Jersey 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 in Detail

This molding operation has been used since ancient times for creatingvseverl product lines. Egyptians for instance, employed rotomoulding systems in the manufacturing of ceramics. The Swiss were also utilizing this rotation technique to generate hollow chocolate eggs. Some plastic products in the USA were developed using this procedure some time between 1940 and 1950. The procedure has however taken long to take affect because it was looked at as being a somewhat slow process

1. Mold readying.
A fixed amount of polymer in grain form is packed into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel component. 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 format of plastic manufacturing.

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 inserted into the oven.

2. The heating and fusion procedure.
Once within the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The turning is done gradually, about 20 rotations per min. The main thing that is vital at this moment is the amount of time the mould will spend within the oven. If it stays to long, the material will lose stability and durability, making a weak item. If it is removed from the oven too early, the polymer will not have melted properly, which produces bubbles in the completed product line.

3. Mold cooling down.
When the material has sufficiently spent the correct 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 material cools, it shrinks a little for ease of extraction from the mold. This is another procedure that relies a lot on the ideal timing, since rapid cooling shrinks the material too fast, causing warping of the product.

4. The offloading or de-molding phase.
When the component within te mould has cooled adequately, the person handling the process can then remove the finished item from the mould. The technique is repeated from the beginning, making a number of identical items.

For more information on the different rotational rotomolding options offered for the Northfield NJ 8225 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 products

Local Resources

Production Example
Google Map