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

rotational moulding-Homer City-Rotational moulding pertains to a plastic production technique that produces hollow stress-free products. The function relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of shapes, colors and sizes. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The attribute that makes this unique from other plastic manufacturing methods that no pressure is involved. It also has few contenders when it comes down to the creation of large hollow items which are long lasting and inexpensive.There is a wide range of product lines that are produced by this process including large water tanks, automobile items, intricate molded medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in regards to design 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 Homer City PA 15748, 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-Homer City-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 Homer City 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 Process Components

This moulding method has been used since earlier times for creatingvseverl product lines. Egyptians for instance, applied rotational molding solutions in the producing of ceramics. The Swiss were also employing this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were created using this procedure some time between 1940 and 1950. The procedure has however taken very long to catch on because it was thought of to be a relatively slow process

1. Mold fitting.
A predetermined volume of polymer in powder form is loaded into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel material. The color tone wanted for the finished goods 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 manufacturing.

Preheating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then secured and put inside the oven.

2. The heat and fusion step.
Once within the oven, the mold is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done gradually, about 20 spins per min. One thing that is important at this point is the period of time the mould will spend within the oven. If it stays to long, the component will lose stability and strength, making a faulty product. If it is taken out from the oven prematurely, the polymer will not have melted properly, which generates bubbles in the finished item.

3. Mold cooling.
When the component has completely spent the enough 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 generates a cool mist. When the material cools, it shrinks somewhat for ease of extraction from the mould. This is an additional measure that relies a lot on the ideal timing, since rapid cooling decreases the material too quick, causing bending of the item.

4. The unloading or de-molding phase.
Once the product within te mold has cooled successfully, the molder managing the procedure can then take out the finalized item from the mould. The function is repeated from the beginning, making a series of similar products.

For more information on the different rotational molding options offered for the Homer City PA 15748 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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