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

rotomolding-Du Bois-Rotational moulding pertains to a plastic production practice that makes hollow stress-free items. The function relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have a variety of designs, sizes and colors. This method is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The benefit that makes this unique from other plastic manufacturing processes in that no pressure is needed. It also has few contenders when it involves the production of sizable hollow products which are long-lasting and inexpensive.There is a wide variety of products that are developed by this process including large water tanks, automobile items, intricate designed medical products, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in terms of type and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Du Bois PA 15801, 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 rotocasting 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-Du Bois-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 Pennsylvania 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 Du Bois Pennsylvania 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 molding method has been used since early times for creatingvseverl product lines. Egyptians as an example, used rotational molding systems in the of ceramics. The Swiss were also working with this rotation approach to make hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this method some time between 1940 and 1950. The technique has however taken very long to catch on because it was thought of to be a pretty slow-moving process

1. Mold preparation.
A predetermined volume of polymer in powder form is filled into a hollow mold. The mould is usually built from cast aluminium or sheet steel component. The colour intended for the final product 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 may 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 secured and put into the oven.

2. The heat and fusion step.
Once inside the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 revolutions per min. One thing that is critical at this moment is the amount of time the mold will spend within the oven. If it overstays, the product will lose value and strength, generating a faulty product. If it is removed from the oven too early, the polymer will not have melted properly, which develops bubbles in the finished product.

3. Mold cooling down.
When the component has completely spent the enough 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 generates a cool mist. When the material cools, it reduces a little for ease of removal from the mold. This is another procedure that depends upon a lot on the ideal timing, since quick cooling shrinks the material too rapidly, causing warping of the product.

4. The unloading or de-molding step.
Once the component within te mould has cooled adequately, the person handling the operation can then extract the completed item from the mold. The procedure is repeated from the start, providing a number of exact products.

For more information on the different rotational molding options offered for the Du Bois PA 15801 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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