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

rotational moulding-Franklinton-Rotational moulding refers to a plastic production practice that creates hollow stress-free products. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece items that have varying shapes, colors and sizes. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The attribute that makes this different from other plastic manufacturing methods that no pressure is required. It also has few rivals when it comes down to the manufacture of sizable hollow products which are long-lasting and inexpensive.There is a wide range of product lines that are produced by this process including big water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of style 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 Franklinton NC 27525, 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 rotomolding 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 Manufacturing-Franklinton-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 North Carolina 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 Franklinton North Carolina 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 system has been used since earlier times for creatingvseverl product lines. Egyptians for instance, used rotocasting techniques in the creating of ceramics. The Swiss were also applying this rotation method to generate hollow chocolate eggs. Some plastic products in the USA were manufactured using this technique some time between 1940 and 1950. The technique has however taken very long to catch on because it was looked at to be a rather slow-moving process

1. Mould prep work.
A predetermined volume of polymer in particle form is packed into a hollow mould. The mold is usually composeded of cast aluminium or sheet steel component. The colour wanted for the finished goods is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic production.

Pre-heating of the oven starts, 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 placed within the oven.

2. The heating up and fusion process.
Once within 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 rotation is done slowly and gradually, about 20 revolutions per minute. One thing that is vital at this moment is the period of time the mould will spend within the oven. If it overstays, the material will lose stability and strength, generating a weak product. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which develops bubbles in the finalized item.

3. Mold cooling down.
When the material has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it reduces somewhat for ease of extraction from the mold. This is one more measure that depends a lot on the ideal timing, since quick cooling decreases the material too rapidly, causing warping of the product.

4. The discharging or de-molding step.
When the material inside te mould has cooled adequately, the molder taking care of the procedure can then remove the finished item from the mold. The technique is repeated from the start, providing a series of similar products.

For more information on the different rotational rotomolding options offered for the Franklinton NC 27525 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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