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rotocasting-Eaton-Rotational molding refers to a plastic production practice that makes hollow stress-free items. The technique utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have a variety of designs, colors and sizes. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing techniques that no pressure is required. It also has few competitors when it comes down to the creation of sizable hollow items which are resilient and inexpensive.There is a wide variety of products that are created by this process including big water tanks, automobile items, sophisticated designed medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the flexibility in regards to style and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Eaton OH 45320, 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 rotomoulding 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

Custom Molding-Eaton-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 Ohio 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 Eaton Ohio 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 Process Components

This molding operation has been used since early times for creatingvseverl items. Egyptians for instance, employed rotational molding techniques in the producing of ceramics. The Swiss were also employing this rotation style to create hollow chocolate eggs. Some plastic products in the USA were developed utilizing this method some time between 1940 and 1950. Given that it was viewed to be a basically slow-moving process, the procedure has however taken long to become popular

1. Mold preparation.
A fixed measure of polymer in particle form is loaded into a hollow mould. The mold is usually made of cast aluminium or sheet steel component. The color tone wanted for the finished goods is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic manufacturing.

Preheating 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 locked and installed inside the oven.

2. The heat and fusion step.
Once within the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The turning is done slowly and gradually, about 20 rotations per min. Something that is critical 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, creating a faulty item. If it is taken out from the oven prematurely, the polymer will not have liquefied correctly, which creates bubbles in the completed product line.

3. Mould cooling.
When the component has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This may 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 mold. This is an additional procedure that depends upon a lot on the correct timing, since rapid cooling decreases the material too fast, causing warping of the material.

4. The unloading or de-molding phase.
When the material within te mold has cooled successfully, the person handling the operation can then take out the finalized product from the mold. The technique is repeated from the beginning, supplying a series of similar product lines.

For more information on the different rotational molding options offered for the Eaton OH 45320, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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