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rotocasting-Mount Hope-Rotational moulding refers to a plastic manufacturing solution that generates hollow stress-free items. The technique utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have various forms, colors and sizes. This technique is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The feature that makes this different from other plastic manufacturing methods in that no pressure is required. It also has few competitors when it comes down to the manufacture of sizable hollow products which are long-lasting and inexpensive.There is a wide variety of items that are developed by this process including large water tanks, automobile products, intricate shaped medical items, recreation equipment, toys, canoes, industrialized equipment among many others.This is because of the versatility in terms of design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Mount Hope OH 44660, 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

Custom Molded-Mount Hope-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 Mount Hope 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 Procedure in Detail

This moulding operation has been used since ancient times for creatingvseverl items. Egyptians for instance, used roto-molding methods in the making of ceramics. The Swiss were also using this rotation method to create hollow chocolate eggs. Some plastic products in the USA were created using this technique some time between 1940 and 1950. The process has however taken very long to catch on because it was thought of to be a rather slow-moving process

1. Mold fitting.
A fixed quantity of polymer in grain form is loaded into a hollow mold. The mould is usually made of cast aluminium or sheet steel component. The coloration desired for the end item 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 design of plastic engineering.

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 mold with the powdered polymer is then secured and installed within the oven.

2. The heating 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 turning is done slowly, about 20 revolutions per min. One thing that is essential at this moment is the amount of time the mold will spend within the oven. If it overstays, the component will lose stability and durability, creating a weak item. If it is taken out from the oven too early, the polymer will not have liquefied correctly, which produces bubbles in the finalized product.

3. Mold cooling.
When the material has completely spent the right 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 component cools, it reduces somewhat for ease of removal from the mold. This is one more step that depends upon a lot on the ideal timing, since quick cooling reduces the material too fast, causing bending of the item.

4. The removing or de-molding phase.
Once the product inside te mould has cooled adequately, the person handling the operation can then extract the completed product from the mould. The technique is repeated from the beginning, providing a number of exact items.

For more information on the different rotational molding options offered for the Mount Hope OH 44660, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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