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

rotational molding-Curtisville-Rotational molding pertains to a plastic production solution that makes hollow stress-free products. The function utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a wide range of forms, sizes and colors. This procedure is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The attribute that makes this different from other plastic manufacturing methods that no pressure is involved. It also has few competitors when it comes down to the production of sizable hollow items which are resilient and inexpensive.There is a variety of items that are created by this process including big water tanks, automobile items, intricate shaped medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in regards to design and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Curtisville PA 15032, 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 rotocasting 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-Curtisville-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 Curtisville 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 Process Components

This moulding process has been used since earlier times for creatingvseverl items. Egyptians for example, used rotocasting solutions in the creating of ceramics. The Swiss were also utilizing this rotation format to generate hollow chocolate eggs. Some plastic items in the USA were made utilizing this approach some time between 1940 and 1950. Considering that it was considered to be a relatively slow-moving procedure, the technique has however taken long to catch on

1. Mold prep work.
A predetermined amount of polymer in grain form is packed into a hollow mould. The mold is usually built from cast aluminium or sheet steel material. The color tone wanted for the end product 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 production.

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

2. The heat and fusion step.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The turning is done gradually, about 20 revolutions per sixty seconds. The main thing that is critical at this moment is the amount of time the mould will spend within the oven. If it overstays, the component will lose value and strength, producing a faulty product. If it is removed from the oven too early, the polymer will not have flowed correctly, which produces bubbles in the finalized product line.

3. Mold cooling down.
When the product has sufficiently 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 creates a cool mist. When the material cools, it shrinks a little for ease of removal from the mould. This is yet another procedure that depends upon a lot on the right timing, since rapid cooling shrinks the material too fast, causing warping of the product.

4. The offloading or de-moulding step.
Once the material inside te mold has cooled properly, the molder handling the operation can then extract the completed product from the mould. The process is repeated from the beginning, providing a series of identical products.

For more information on the different rotational molding options offered for the Curtisville PA 15032 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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