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

rotomoulding-Dauphin-Rotational molding refers to a plastic manufacturing practice that makes hollow stress-free product lines. The process depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have various forms, sizes and colors. This technique is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this different from other plastic manufacturing procedures because no pressure is required. It also has few contenders when it comes down to the creation of sizable hollow items which are long-lasting and inexpensive.There is a wide variety of items that are produced by this process including big water tanks, automobile materials, sophisticated designed medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the flexibility in regards to design and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Dauphin PA 17018, 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

Custom Molded-Dauphin-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 Dauphin 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 moulding system has been used since early times for creatingvseverl product lines. Egyptians as an example, employed rotational molding systems in the making of ceramics. The Swiss were also applying this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured using this approach some time between 1940 and 1950. The system has however taken long to catch on because it was looked at to be a rather slow-moving process

1. Mold preparation.
A fixed volume of polymer in grain form is loaded into a hollow mold. The mold is usually crafted from cast aluminium or sheet steel substance. The color tone wanted for the final goods 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 design of plastic manufacturing.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then locked and inserted within the oven.

2. The heat and fusion procedure.
Once within the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The turning is done slowly and gradually, about 20 rotations per minute. One thing that is vital at this moment is the period of time the mold will spend inside the oven. If it stays to long, the component will lose value and strength, generating a poor item. If it is removed from the oven prematurely, the polymer will not have melted correctly, which develops bubbles in the finalized item.

3. Mold cooling down.
When the material has completely spent the correct 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 a cool mist. When the material cools, it shrinks somewhat for ease of removal from the mold. This is an additional step that depends upon a lot on the ideal timing, since rapid cooling reduces the material too rapidly, causing warping of the product.

4. The un-loading or de-molding step.
As soon as the component inside te mould has cooled successfully, the person handling the procedure can then extract the completed product from the mould. The technique is repeated from the start, providing a series of identical product lines.

For more information on the different rotational molding options offered for the Dauphin PA 17018 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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