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

roto-molding-Carnegie-Rotational molding pertains to a plastic production procedure that generates hollow stress-free products. The process utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying forms, sizes and colors. This technique is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The function that makes this different from other plastic manufacturing procedures in that no pressure is called for. It also has few competitors when it pertains to the manufacture of sizable hollow products which are long-lasting and inexpensive.There is a wide variety of items that are developed by this process including large size water tanks, automobile products, complex molded medical items, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility 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 Carnegie PA 15106, 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 rotomoulding 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 Molding-Carnegie-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 Carnegie 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 Rotomolding Procedure Components

This moulding procedure has been used since earlier times for creatingvseverl products. Egyptians for instance, utilized rotational molding methods in the manufacturing of ceramics. The Swiss were also making use of this rotation approach to create hollow chocolate eggs. Some plastic items in the USA were made using this method some time between 1940 and 1950. The process has however taken long to catch on because it was looked at to be a pretty slow process

1. Mold readying.
A fixed volume of polymer in particle form is packed into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel substance. The coloration desired 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 type of plastic production.

Pre-heating of the oven follows, 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 sealed and placed within the oven.

2. The heating and fusion process.
Once within the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The spinning is done slowly and gradually, about 20 revolutions per minute. One thing that is critical at this point is the period of time the mould will spend inside the oven. If it stays to long, the material will lose stability and strength, generating a poor product. If it is removed from the oven too early, the polymer will not have flowed correctly, which creates bubbles in the finished product.

3. Mold cooling.
When the material has completely spent the right amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the material cools, it shrinks a little for ease of extraction from the mold. This is one more measure that relies a lot on the right timing, since rapid cooling reduces the material too quickly, causing bending of the item.

4. The offloading or de-moulding step.
As soon as the product within te mold has cooled properly, the person managing the process can then remove the finished item from the mold. The process is repeated from the beginning, making a series of similar items.

For more information on the different rotational molding options offered for the Carnegie PA 15106 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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