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

rotocasting-Selma-Rotational moulding pertains to a plastic production procedure that generates hollow stress-free product lines. The function relies on high temperatures and bi axial rotation to come up with seamless, one piece products that have a wide range of shapes, colors and sizes. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing procedures because no pressure is required. It also has few rivals when it involves the manufacture of large size hollow items which are durable and inexpensive.There is a wide variety of product lines that are generated by this process including large water tanks, automobile products, intricate designed 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 Selma IN 47383, 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

Plastic Molding-Selma-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 Indiana 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 Selma Indiana 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 Method in Detail

This moulding technique has been used since earlier times for creatingvseverl products. Egyptians for instance, used rotocasting systems in the making of ceramics. The Swiss were also utilizing this rotation method to make hollow chocolate eggs. Some plastic products in the USA were created using this technique some time between 1940 and 1950. The procedure has however taken very long to catch on because it was thought of to be a somewhat slow process

1. Mold fitting.
A predetermined measure of polymer in powder form is loaded into a hollow mould. The mold is usually composeded of cast aluminium or sheet steel component. The coloring intended for the final item 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 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 mould with the powdered polymer is then sealed and installed inside the oven.

2. The heat and fusion process.
Once inside the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done gradually, about 20 spins per sixty seconds. Something that is essential at this moment is the amount of time the mould will spend within the oven. If it overstays, the material will lose stability and durability, making a weak item. If it is removed from the oven prematurely, the polymer will not have liquefied properly, which creates bubbles in the completed item.

3. Mold cooling down.
When the component has completely spent the right 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 creates a cool mist. When the material cools, it reduces a little for ease of extraction from the mould. This is an additional measure that depends upon a lot on the right timing, since rapid cooling decreases the material too fast, causing warping of the item.

4. The un-loading or de-moulding phase.
As soon as the material within te mould has cooled successfully, the person managing the process can then extract the finished item from the mould. The procedure is repeated from the beginning, providing a series of identical items.

For more information on the different rotational rotomolding options offered for the Selma IN 47383 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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