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rotational molding-Xenia-Rotational moulding pertains to a plastic manufacturing technique that makes hollow stress-free product lines. The technique uses high temperatures and bi axial rotation to come up with seamless, one piece items that have several forms, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The component that makes this different from other plastic manufacturing processes in that no pressure is involved. It also has few contenders when it comes to the creation of large hollow products which are long lasting and inexpensive.There is a variety of products that are developed by this process including large water tanks, automobile products, complex molded medical items, recreation equipment, toys, canoes, industrialized equipment among many others.This is because of the flexibility in terms of type 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 Xenia OH 45385, 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 Molding-Xenia-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 Xenia 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 molding system has been used since early times for creatingvseverl items. Egyptians as an example, used rotational molding procedures in the creating of ceramics. The Swiss were also working with this rotation type to generate hollow chocolate eggs. Some plastic products in the USA were made using this technique some time between 1940 and 1950. The system has however taken very long to catch on because it was considered as being a moderately slow-moving process

1. Mould readying.
A fixed amount of polymer in powder form is filled into a hollow mold. The mould is usually constructed from cast aluminium or sheet steel substance. The colour preferred for the end 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 design of plastic assembly.

Preheating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then sealed and installed inside the oven.

2. The heating and fusion step.
Once within the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done slowly and gradually, about 20 rotations per sixty seconds. Something that is crucial at this point is the period of time the mold will spend inside the oven. If it stays to long, the product will lose stability and strength, creating a faulty product. If it is taken out from the oven too early, the polymer will not have liquefied properly, which generates bubbles in the finalized product line.

3. Mold cooling down.
When the component has completely spent the right amount 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 a cool mist. When the material cools, it reduces somewhat for ease of extraction from the mould. This is yet another measure that depends upon a lot on the right timing, since quick cooling shrinks the material too fast, causing bending of the material.

4. The un-loading or de-moulding step.
Once the product within te mold has cooled effectively, the molder taking care of the operation can then extract the finished product from the mould. The process is repeated from the start, providing a series of exact product lines.

For more information on the different rotational molding options offered for the Xenia OH 45385, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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