Looking for rotational molding alternatives in Tennessee? Want affordable custom plastic molding that is cost effective for Dayton area? Then give us a call at our toll free number 866-971-7861 or request a quote today!

rotational molding-Dayton-Rotational molding refers to a plastic production solution that makes hollow stress-free products. The technique utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have a variety of shapes, colors and sizes. This procedure is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this different from other plastic manufacturing processes because no pressure is needed. It also has few competitors when it pertains to the creation of large size hollow items which are long lasting and inexpensive.There is a wide variety of items that are created by this process including big water tanks, automobile items, complex shaped medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in regards to type and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Dayton TN 37321, 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 Molding-Dayton-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 Tennessee 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 Dayton Tennessee 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 Process in Detail

This molding operation has been used since earlier times for creatingvseverl product lines. Egyptians as an example, used rotocasting methods in the of ceramics. The Swiss were also utilizing this rotation method to generate hollow chocolate eggs. Some plastic items in the USA were developed using this approach some time between 1940 and 1950. The technique has however taken long to take affect because it was looked at as being a very slow process

1. Mould prep work.
A predetermined volume of polymer in powder form is loaded into a hollow mould. The mould is usually built from cast aluminium or sheet steel component. The coloration needed for the end item 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 format of plastic production.

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 locked and positioned inside the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done slowly and gradually, about 20 rotations per minute. Something that is critical at this moment is the period of time the mold will spend within the oven. If it overstays, the material will lose stability and durability, generating a weak product. If it is extracted from the oven prematurely, the polymer will not have flowed correctly, which generates bubbles in the finished product line.

3. Mold cooling.
When the material has sufficiently spent the enough of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it reduces somewhat for ease of removal from the mold. This is one more measure that depends upon a lot on the correct timing, since rapid cooling shrinks the material too quick, causing warping of the product.

4. The discharging or de-molding phase.
As soon as the component within te mould has cooled properly, the person handling the operation can then extract the completed product from the mold. The procedure is repeated from the beginning, making a number of similar product lines.

For more information on the different rotational molding options offered for the Dayton TN 37321 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to custom molded

Local Resources

Production Example
Google Map