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

rotocasting-Bunker Hill-Rotational molding pertains to a plastic production practice that produces hollow stress-free product lines. The procedure depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have many different forms, sizes and colors. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this different from other plastic manufacturing techniques that no pressure is called for. It also has few contenders when it pertains to the creation of large size hollow items which are long-lasting and inexpensive.There is a wide range of products that are developed by this process including large water tanks, automobile products, sophisticated molded medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in regards to design 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 Bunker Hill IN 46914, 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

Plastic Molding-Bunker Hill-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 Bunker Hill 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 Rotomolding Process in Detail

This molding system has been used since ancient times for creatingvseverl products. Egyptians as an example, used rotocasting procedures in the of ceramics. The Swiss were also making use of this rotation technique to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this procedure some time between 1940 and 1950. The procedure has however taken very long to take affect because it was considered as being a very slow-moving process

1. Mold readying.
A predetermined volume of polymer in grain form is loaded into a hollow mold. The mould is usually built from cast aluminium or sheet steel substance. The color tone preferred for the final 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 style of plastic production.

Pre-heating of the oven follows, 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 locked and installed inside the oven.

2. The heating and fusion phase.
Once inside the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The turning is done gradually, about 20 rotations per minute. The main thing that is critical at this point is the amount of time the mould will spend inside the oven. If it stays to long, the component will lose stability and durability, creating a faulty product. If it is extracted from the oven too early, the polymer will not have melted correctly, which produces bubbles in the finalized item.

3. Mold cooling.
When the material has completely 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 generates a cool mist. When the product cools, it reduces slightly for ease of removal from the mold. This is another measure that relies a lot on the ideal timing, since rapid cooling shrinks the material too quick, causing warping of the material.

4. The removing or de-moulding phase.
When the product inside te mold has cooled successfully, the molder handling the procedure can then take out the completed product from the mold. The function is repeated from the beginning, supplying a series of similar products.

For more information on the different rotational rotomolding options offered for the Bunker Hill IN 46914 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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