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rotocasting-Washington-Rotational moulding pertains to a plastic manufacturing practice that produces hollow stress-free product lines. The method utilizes high temperatures and bi axial rotation to follow up with seamless, one piece items that have different shapes, sizes and colors. This procedure is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The feature that makes this different from other plastic manufacturing procedures that no pressure is involved. It also has few rivals when it pertains to the manufacture of sizable hollow items which are resilient and inexpensive.There is a variety of products that are produced by this process including large size water tanks, automobile products, intricate shaped medical items, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in terms of style and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Washington NJ 7882, 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 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 Products-Washington-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 Washington 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 Roto-Molding Method in Detail

This moulding system has been used since earlier times for creatingvseverl product lines. Egyptians for example, used roto-molding systems in the producing of ceramics. The Swiss were also making use of this rotation style to generate hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this procedure some time between 1940 and 1950. The technique has however taken very long to take affect because it was considered to be a somewhat slow process

1. Mold preparation.
A fixed volume of polymer in powder form is loaded into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel material. The coloration preferred for the final goods 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 format of plastic production.

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 mould with the powdered polymer is then sealed and positioned inside the oven.

2. The heat and fusion procedure.
Once inside the oven, the mold is spun on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The rotation is done slowly and gradually, about 20 rotations per minute. The main thing that is crucial at this point is the period of time the mould will spend inside the oven. If it overstays, the component will lose value and durability, generating a weak product. If it is taken out from the oven too early, the polymer will not have flowed correctly, which creates bubbles in the finalized item.

3. Mold cooling down.
When the material has sufficiently spent the enough of time in the oven, it is then removed for cooling. This may be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it shrinks a little for ease of removal from the mold. This is an additional measure that depends a lot on the ideal timing, since rapid cooling reduces the material too quick, causing warping of the material.

4. The un-loading or de-molding step.
As soon as the component inside te mould has cooled properly, the person managing the operation can then remove the finalized item from the mould. The technique is repeated from the start, making a series of identical items.

For more information on the different rotational rotomolding options offered for the Washington NJ 7882 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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