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

rotomoulding-Dothan-Rotational molding pertains to a plastic production technique that creates hollow stress-free product lines. The technique utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have a wide range of shapes, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing procedures in that no pressure is involved. It also has few competitors when it comes down to the manufacture of large size hollow items which are resilient and inexpensive.There is a variety of items that are produced by this process including large water tanks, automobile products, intricate molded medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in regards to style and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Dothan AL 36301, 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 roto-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-Dothan-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 Alabama 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 Dothan Alabama 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 method has been used since early times for creatingvseverl product lines. Egyptians as an example, used rotocasting solutions in the creating of ceramics. The Swiss were also applying this rotation style to make hollow chocolate eggs. Some plastic items in the USA were developed using this procedure some time between 1940 and 1950. The technique has however taken long to catch on because it was considered to be a relatively slow process

1. Mold readying.
A fixed measure of polymer in powder form is packed into a hollow mold. The mould is usually constructed from cast aluminium or sheet steel material. The coloration needed for the final goods is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type 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 locked and put inside the oven.

2. The heating and fusion procedure.
Once inside the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The spinning is done slowly and gradually, about 20 rotations per min. Something that is essential at this moment is the amount of time the mold will spend within the oven. If it stays to long, the material will lose stability and strength, generating a weak product. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which produces bubbles in the finalized item.

3. Mould cooling down.
When the component has sufficiently spent the enough 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 generates a cool mist. When the component cools, it reduces a little for ease of extraction from the mold. This is an additional procedure that depends a lot on the right timing, since quick cooling reduces the material too quick, causing bending of the item.

4. The unloading or de-moulding phase.
Once the component within te mould has cooled adequately, the molder managing the process can then extract the finalized product from the mold. The procedure is repeated from the start, supplying a series of similar items.

For more information on the different rotational rotomolding options offered for the Dothan AL 36301 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 molding

Local Resources

Production Example
Google Map