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

rotocasting-Zieglerville-Rotational moulding refers to a plastic manufacturing solution that generates hollow stress-free products. The method depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have many different designs, colors and sizes. This method is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing processes because no pressure is involved. It also has few competitors when it comes down to the creation of large size hollow products which are resilient and inexpensive.There is a variety of items that are produced by this process including big water tanks, automobile products, intricate shaped medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in terms of 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 Zieglerville PA 19492, 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 Molding-Zieglerville-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 Zieglerville 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 in Detail

This moulding operation has been used since early times for creatingvseverl products. Egyptians for instance, utilized roto-molding solutions in the creating of ceramics. The Swiss were also using this rotation method to create hollow chocolate eggs. Some plastic products in the USA were manufactured using this approach some time between 1940 and 1950. The technique has however taken very long to catch on because it was considered as being a very slow-moving process

1. Mould fitting.
A predetermined quantity of polymer in powder form is filled into a hollow mold. The mould is usually made of cast aluminium or sheet steel material. The color preferred for the end goods 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 type of plastic assembly.

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

2. The heating and fusion procedure.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The spinning is done slowly, about 20 spins per minute. One thing that is essential at this moment is the amount of time the mold will spend inside the oven. If it stays to long, the product will lose value and durability, creating a poor item. If it is taken out from the oven prematurely, the polymer will not have melted correctly, which creates bubbles in the completed item.

3. Mold cooling down.
When the component has completely 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 creates a cool mist. When the component cools, it reduces slightly for ease of removal from the mould. This is one more procedure that relies a lot on the ideal timing, since rapid cooling reduces the material too quick, causing warping of the material.

4. The offloading or de-moulding phase.
When the component within te mould has cooled correctly, the molder taking care of the operation can then take out the completed product from the mould. The process is repeated from the beginning, giving a series of identical products.

For more information on the different rotational molding options offered for the Zieglerville PA 19492 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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