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

rotational moulding-Coopersburg-Rotational moulding refers to a plastic manufacturing practice that makes hollow stress-free items. The procedure uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have different shapes, colors and sizes. This procedure is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The function that makes this unique from other plastic manufacturing processes that no pressure is required. It also has few competitors when it comes down to the manufacture of large size hollow products which are durable and inexpensive.There is a variety of items that are developed by this process including large size water tanks, automobile items, intricate designed medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the flexibility in terms of type 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 Coopersburg PA 18036, 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 rotomolding 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 Manufacturing-Coopersburg-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 Coopersburg 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 Procedure in Detail

This molding technique has been used since ancient times for creatingvseverl products. Egyptians for example, employed rotomoulding methods in the of ceramics. The Swiss were also employing this rotation type to generate hollow chocolate eggs. Some plastic products in the USA were made utilizing this approach some time between 1940 and 1950. Due to the fact that it was viewed to be a basically slow-moving system, the approach has however taken long to become popular

1. Mold readying.
A predetermined measure of polymer in powder form is loaded into a hollow mold. The mould is usually built from cast aluminium or sheet steel substance. The color tone chosen for the final 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 style 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 mould with the powdered polymer is then secured and put inside the oven.

2. The heating up and fusion procedure.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The turning is done slowly and gradually, about 20 spins per sixty seconds. Something that is critical at this point is the amount of time the mold will spend inside the oven. If it overstays, the material will lose value and strength, making a faulty product. If it is extracted from the oven too early, the polymer will not have flowed properly, which generates bubbles in the completed product.

3. Mould cooling down.
When the component has sufficiently spent the right amount of time in the oven, it is then taken out 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 shrinks somewhat for ease of removal from the mold. This is another measure that depends a lot on the right timing, since rapid cooling reduces the material too fast, causing bending of the material.

4. The offloading or de-moulding phase.
As soon as the component within te mould has cooled properly, the person taking care of the operation can then take out the finalized item from the mould. The technique is repeated from the start, making a series of similar product lines.

For more information on the different rotational molding options offered for the Coopersburg PA 18036 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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