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

rotational molding-Palmyra-Rotational moulding refers to a plastic manufacturing procedure that creates hollow stress-free product lines. The method depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have many different designs, colors and sizes. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this unique from other plastic manufacturing methods because no pressure is needed. It also has few contenders when it pertains to the manufacture of large size hollow items which are long lasting and inexpensive.There is a wide variety of items that are produced by this process including large size water tanks, automobile materials, sophisticated shaped medical items, leisure equipment, toys, canoes, industrialized equipment among many others.This is because of the versatility in regards to design and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Palmyra PA 17078, 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 Molding-Palmyra-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 Palmyra 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 Rotomoulding Procedure Components

This moulding system has been used since ancient times for creatingvseverl products. Egyptians for example, used rotocasting solutions in the creating of ceramics. The Swiss were also utilizing this rotation style to generate hollow chocolate eggs. Some plastic products in the USA were made utilizing this approach some time between 1940 and 1950. Given that it was viewed to be a rather slow technique, the procedure has however taken long to catch on

1. Mould readying.
A fixed quantity of polymer in grain form is loaded into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel component. The coloration intended for the final item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic assembly.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then locked and installed into the oven.

2. The heating up and fusion phase.
Once within the oven, the mould is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The spinning is done slowly and gradually, about 20 spins per sixty seconds. One thing that is critical at this moment is the amount of time the mold will spend within the oven. If it stays to long, the component will lose value and strength, creating a weak product. If it is extracted from the oven too early, the polymer will not have flowed properly, which creates bubbles in the finished product line.

3. Mold cooling down.
When the material has completely 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 component cools, it reduces slightly for ease of extraction from the mould. This is another step that relies a lot on the ideal timing, since rapid cooling reduces the material too fast, causing bending of the material.

4. The unloading or de-molding phase.
Once the material inside te mould has cooled correctly, the molder taking care of the procedure can then remove the completed product from the mould. The function is repeated from the start, making a number of exact product lines.

For more information on the different rotational molding options offered for the Palmyra PA 17078 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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