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

rotational molding-Seven Valleys-Rotational molding pertains to a plastic manufacturing solution that generates hollow stress-free items. The function utilizes high temperatures and bi axial rotation to follow up with seamless, one piece items that have many different designs, sizes and colors. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The feature that makes this different from other plastic manufacturing methods in that no pressure is called for. It also has few contenders when it pertains to the manufacture of large hollow items which are resilient and inexpensive.There is a wide range of product lines that are developed by this process including large water tanks, automobile materials, sophisticated molded medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in terms of type and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Seven Valleys PA 17360, 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

Custom Molded-Seven Valleys-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 Seven Valleys 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 in Detail

This moulding procedure has been used since early times for creatingvseverl products. Egyptians for example, applied rotomoulding techniques in the of ceramics. The Swiss were also employing this rotation technique to make hollow chocolate eggs. Some plastic product lines in the USA were made using this procedure some time between 1940 and 1950. Given that it was looked at to be a rather slow procedure, the method has however taken long to catch on

1. Mold readying.
A fixed quantity of polymer in particle form is packed into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel component. The color needed for the end product 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 engineering.

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 secured and placed inside the oven.

2. The heating and fusion step.
Once within the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The spinning is done slowly, about 20 spins per minute. The main thing that is important at this moment is the period of time the mould will spend inside the oven. If it stays to long, the product will lose stability and strength, making a poor product. If it is removed from the oven too early, the polymer will not have melted correctly, which develops bubbles in the completed product line.

3. Mould cooling down.
When the component has sufficiently spent the correct amount of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it shrinks somewhat for ease of extraction from the mould. This is yet another measure that relies a lot on the ideal timing, since rapid cooling shrinks the material too rapidly, causing warping of the product.

4. The removing or de-moulding step.
When the component within te mold has cooled effectively, the person managing the procedure can then extract the finalized product from the mould. The function is repeated from the start, supplying a number of similar product lines.

For more information on the different rotational molding options offered for the Seven Valleys PA 17360 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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