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rotational molding-Mantua-Rotational molding refers to a plastic manufacturing practice that produces hollow stress-free product lines. The method depends on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different forms, colors and sizes. This procedure is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this unique from other plastic manufacturing processes in that no pressure is needed. It also has few competitors when it pertains to the production of large size hollow items which are long lasting and inexpensive.There is a wide range of product lines that are developed by this process including large water tanks, automobile items, intricate molded medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in regards to style 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 Mantua OH 44255, 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

Custom Molding-Mantua-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 Mantua 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 Roto-Molding Procedure Components

This moulding operation has been used since early times for creatingvseverl products. Egyptians as an example, utilized rotational molding systems in the manufacturing of ceramics. The Swiss were also working with this rotation type to generate hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this technique some time between 1940 and 1950. Because it was viewed to be a relatively slow-moving process, the procedure has however taken long to catch on

1. Mold preparation.
A predetermined quantity of polymer in grain form is packed into a hollow mould. The mould is usually made from cast aluminium or sheet steel component. The colour desired for the final product 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 style of plastic engineering.

Pre-heating 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 mold with the powdered polymer is then secured and put inside the oven.

2. The heat and fusion procedure.
Once within the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The spinning is done gradually, about 20 rotations per min. Something that is essential at this moment is the amount of time the mold will spend inside the oven. If it overstays, the component will lose stability and durability, creating a faulty item. If it is extracted from the oven prematurely, the polymer will not have liquefied correctly, which creates bubbles in the completed item.

3. Mold cooling.
When the product has completely spent the correct 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 extraction from the mold. This is one more measure that depends upon a lot on the right timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The discharging or de-moulding step.
Once the component inside te mould has cooled correctly, the person handling the procedure can then remove the finalized product from the mold. The function is repeated from the start, providing a series of similar products.

For more information on the different rotational molding options offered for the Mantua OH 44255, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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