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

roto-molding-Braddock-Rotational molding pertains to a plastic production practice that produces hollow stress-free items. The procedure depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have a variety of forms, sizes and colors. This technique is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The component that makes this unique from other plastic manufacturing methods that no pressure is involved. It also has few contenders when it comes to the production of sizable hollow items which are long-lasting and inexpensive.There is a variety of products that are produced by this process including large water tanks, automobile items, sophisticated designed medical items, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in regards to style 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 Braddock PA 15104, 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-Braddock-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 Braddock 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 molding procedure has been used since ancient times for creatingvseverl product lines. Egyptians as an example, employed rotational molding techniques in the making of ceramics. The Swiss were also utilizing this rotation style to create hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this procedure some time between 1940 and 1950. The system has however taken long to take affect because it was looked at to be a rather slow-moving process

1. Mould readying.
A fixed measure of polymer in grain form is loaded into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel substance. The colour desired for the final product is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Pre-heating of the oven starts, and it can 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 installed within the oven.

2. The heat and fusion procedure.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The turning is done slowly, about 20 revolutions per minute. The main 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 stability and strength, making a weak product. If it is extracted from the oven too early, the polymer will not have flowed properly, which develops bubbles in the finalized product.

3. Mould 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 generates a cool mist. When the material cools, it reduces slightly for ease of extraction from the mold. This is yet another measure that depends a lot on the right timing, since rapid cooling reduces the material too quick, causing bending of the item.

4. The discharging or de-molding step.
When the material within te mold has cooled properly, the molder managing the process can then remove the finalized item from the mould. The procedure is repeated from the beginning, giving a series of identical products.

For more information on the different rotational molding options offered for the Braddock PA 15104 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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