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

rotational moulding-Cheltenham-Rotational molding refers to a plastic production solution that creates hollow stress-free products. The process depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have several forms, sizes and colors. This procedure is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The feature that makes this different from other plastic manufacturing methods in that no pressure is required. It also has few rivals when it comes to the production of sizable hollow items which are long-lasting and inexpensive.There is a variety of product lines that are developed by this process including large water tanks, automobile items, sophisticated shaped medical items, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in regards to style and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Cheltenham PA 19012, 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 molding 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-Cheltenham-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 Cheltenham 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 Roto-Molding Method in Detail

This molding technique has been used since ancient times for creatingvseverl product lines. Egyptians as an example, used rotocasting systems in the manufacturing of ceramics. The Swiss were also working with this rotation method to generate hollow chocolate eggs. Some plastic items in the USA were manufactured 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 moderately slow-moving process

1. Mold preparation.
A predetermined quantity of polymer in powder form is packed into a hollow mould. The mould is usually made from cast aluminium or sheet steel component. The colour intended for the finished goods is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic production.

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 mold with the powdered polymer is then secured and installed into the oven.

2. The heat and fusion procedure.
Once placed into the oven, the mold is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done slowly and gradually, about 20 spins per min. One thing that is vital at this moment is the period of time the mold will spend within the oven. If it overstays, the component will lose stability and durability, producing a weak product. If it is removed from the oven too early, the polymer will not have melted correctly, which produces bubbles in the finalized product.

3. Mould cooling down.
When the product has sufficiently spent the enough 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 generates a cool mist. When the component cools, it reduces somewhat for ease of removal from the mould. This is an additional measure that relies a lot on the right timing, since quick cooling reduces the material too fast, causing warping of the material.

4. The offloading or de-molding step.
Once the material within te mould has cooled effectively, the person taking care of the procedure can then extract the finalized item from the mould. The process is repeated from the beginning, giving a number of exact product lines.

For more information on the different rotational molding options offered for the Cheltenham PA 19012 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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