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

rotational molding-Greenwood-Rotational moulding refers to a plastic manufacturing procedure that produces hollow stress-free product lines. The method utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different shapes, colors and sizes. This technique is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The feature that makes this unique from other plastic manufacturing procedures because no pressure is needed. It also has few competitors when it comes to the production of large hollow products which are long lasting and inexpensive.There is a wide variety of items that are generated by this process including large size water tanks, automobile materials, intricate shaped medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in terms of design 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 Greenwood IN 46142, 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 moulding 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-Greenwood-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 Greenwood 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 Rotomoulding Procedure in Detail

This molding system has been used since early times for creatingvseverl product lines. Egyptians for instance, applied roto-molding methods in the making of ceramics. The Swiss were also making use of this rotation method to create hollow chocolate eggs. Some plastic items in the USA were made utilizing this procedure some time between 1940 and 1950. The process has however taken long to take affect because it was thought of as being a rather slow process

1. Mold readying.
A fixed quantity of polymer in grain form is loaded into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel component. The color tone intended for the end 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 can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then locked and installed within the oven.

2. The heating and fusion step.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The rotation is done gradually, about 20 rotations per minute. One thing that is crucial at this point is the period of time the mold will spend inside the oven. If it stays to long, the material will lose stability and durability, creating a poor product. If it is extracted from the oven prematurely, the polymer will not have melted properly, which produces bubbles in the finalized product line.

3. Mold cooling down.
When the material has completely spent the correct amount of time in the oven, it is then removed 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 extraction from the mould. This is one more step that depends a lot on the ideal timing, since rapid cooling shrinks the material too quick, causing warping of the material.

4. The offloading or de-molding step.
As soon as the material inside te mould has cooled successfully, the person managing the operation can then remove the finished product from the mould. The process is repeated from the beginning, making a number of identical items.

For more information on the different rotational rotomolding options offered for the Greenwood IN 46142 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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