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

roto-molding-Columbia-Rotational molding refers to a plastic manufacturing solution that produces hollow stress-free product lines. The function depends on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a variety of shapes, colors and sizes. This method is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing methods that no pressure is required. It also has few contenders when it comes to the production of large size hollow products which are long lasting and inexpensive.There is a variety of products that are developed by this process including large size water tanks, automobile products, sophisticated shaped medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in regards to type and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Columbia KY 42728, 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

Plastic Products-Columbia-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 Kentucky 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 Columbia Kentucky 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 Method in Detail

This moulding process has been used since early times for creatingvseverl product lines. Egyptians for instance, utilized rotomoulding systems in the making of ceramics. The Swiss were also using this rotation design to make hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this procedure some time between 1940 and 1950. Since it was thought of to be a rather slow-moving procedure, the procedure has however taken long to catch on

1. Mold readying.
A predetermined measure of polymer in powder form is filled into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel material. The colour intended for the finished 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 engineering.

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 mold with the powdered polymer is then secured and positioned within the oven.

2. The heating up and fusion process.
Once within the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The spinning is done slowly, about 20 revolutions per min. One thing that is critical at this moment is the period of time the mold will spend inside the oven. If it stays to long, the component will lose value and strength, generating a faulty product. If it is taken out from the oven too early, the polymer will not have flowed correctly, which generates bubbles in the finalized item.

3. Mold cooling.
When the material has sufficiently spent the correct amount 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 creates a cool mist. When the product cools, it reduces a little for ease of removal from the mould. This is an additional measure that depends upon a lot on the right timing, since rapid cooling shrinks the material too quickly, causing warping of the material.

4. The unloading or de-moulding step.
When the component within te mould has cooled adequately, the person managing the process can then remove the completed item from the mould. The process is repeated from the start, making a series of identical items.

For more information on the different rotational molding options offered for the Columbia KY 42728 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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