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rotocasting-Greenville-Rotational moulding refers to a plastic production procedure that makes hollow stress-free items. The function relies upon high temperatures and bi axial rotation to follow up with seamless, one piece items that have different designs, sizes and colors. This technique is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The benefit that makes this different from other plastic manufacturing processes that no pressure is required. It also has few rivals when it pertains to the manufacture of large size hollow products which are long-lasting and inexpensive.There is a variety of product lines that are created by this process including large water tanks, automobile items, sophisticated shaped medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in terms of type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Greenville PA 16125, 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 Molded-Greenville-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 Greenville 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 Procedure Components

This moulding method has been used since earlier times for creatingvseverl product lines. Egyptians for instance, utilized rotocasting solutions in the making of ceramics. The Swiss were also employing this rotation design to make hollow chocolate eggs. Some plastic products in the USA were developed using this method some time between 1940 and 1950. Since it was thought of to be a very slow technique, the system has however taken long to catch on

1. Mould prep work.
A fixed measure of polymer in grain form is filled into a hollow mould. The mould is usually made from cast aluminium or sheet steel component. The color tone chosen for the finished item 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 format 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 locked and placed within the oven.

2. The heat and fusion process.
Once inside the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done gradually, about 20 revolutions per min. Something that is crucial at this moment is the amount of time the mould will spend within the oven. If it overstays, the material will lose stability and strength, creating a poor product. If it is removed from the oven too early, the polymer will not have melted properly, which develops bubbles in the finished product line.

3. Mold cooling.
When the material has completely spent the correct amount of time in the oven, it is then taken out 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 extraction from the mold. This is one more measure that depends upon a lot on the right timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The removing or de-molding phase.
As soon as the material inside te mould has cooled successfully, the molder managing the procedure can then remove the completed product from the mold. The process is repeated from the beginning, making a number of exact product lines.

For more information on the different rotational molding options offered for the Greenville PA 16125 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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