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rotational moulding-Amanda-Rotational molding refers to a plastic manufacturing practice that makes hollow stress-free product lines. The procedure uses high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a variety of shapes, colors and sizes. This procedure is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing procedures because no pressure is called for. It also has few contenders when it involves the manufacture of large hollow products which are resilient and inexpensive.There is a variety of items that are developed by this process including large size water tanks, automobile products, complex shaped medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in regards to type and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Amanda OH 43102, 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 Molded-Amanda-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 Amanda 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 Rotomolding Process Components

This moulding system has been used since early times for creatingvseverl items. Egyptians as an example, utilized rotocasting techniques in the producing of ceramics. The Swiss were also making use of this rotation technique to make hollow chocolate eggs. Some plastic items in the USA were developed using this approach some time between 1940 and 1950. Since it was considered to be a rather slow technique, the process has however taken long to catch on

1. Mould prep work.
A fixed amount of polymer in grain form is packed into a hollow mould. The mould is usually comprised of cast aluminium or sheet steel component. The coloration needed for the finished product 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.

Pre-heating 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 put inside the oven.

2. The heating up and fusion step.
Once placed into the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The turning is done slowly, about 20 revolutions per min. One thing that is vital at this moment is the amount of time the mold will spend inside the oven. If it overstays, the product will lose stability and durability, creating a faulty item. If it is taken out from the oven too early, the polymer will not have melted correctly, which generates bubbles in the completed product line.

3. Mold cooling.
When the product has sufficiently spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it shrinks somewhat for ease of extraction from the mold. This is an additional procedure that relies a lot on the ideal timing, since quick cooling decreases the material too fast, causing warping of the product.

4. The un-loading or de-moulding step.
When the component inside te mold has cooled successfully, the molder managing the process can then take out the finished product from the mold. The process is repeated from the beginning, providing a series of similar items.

For more information on the different rotational molding options offered for the Amanda OH 43102, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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