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

roto-molding-Waterloo-Rotational molding pertains to a plastic manufacturing practice that creates hollow stress-free product lines. The process relies upon high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying forms, sizes and colors. This method is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing procedures in that no pressure is involved. It also has few competitors when it comes to the manufacture of large hollow products which are resilient and inexpensive.There is a wide range of products that are produced by this process including large size water tanks, automobile materials, intricate designed medical items, leisure equipment, toys, kayaks, industrial equipment among many others.This is due to the flexibility in terms of 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 Waterloo IA 50701, 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-Waterloo-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 Iowa 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 Waterloo Iowa 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 Procedure in Detail

This moulding system has been used since ancient times for creatingvseverl items. Egyptians for example, worked with rotational molding solutions in the of ceramics. The Swiss were also making use of this rotation format to create hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this approach some time between 1940 and 1950. The system has however taken very long to catch on because it was looked at as being a relatively slow-moving process

1. Mould prep work.
A fixed quantity of polymer in grain form is packed into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel material. The colour wanted for the end item 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 design of plastic production.

Preheating of the oven follows, and it can 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 installed within the oven.

2. The heating up and fusion process.
Once placed into the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The spinning is done slowly, about 20 rotations per sixty seconds. The main thing that is vital at this moment is the period of time the mold will spend within the oven. If it overstays, the material will lose value and durability, generating a poor product. If it is removed from the oven too early, the polymer will not have melted correctly, which creates bubbles in the finalized product.

3. Mould cooling down.
When the component has completely spent the enough 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 a cool mist. When the product cools, it shrinks a little for ease of removal from the mould. This is an additional procedure that depends upon a lot on the ideal timing, since rapid cooling decreases the material too quick, causing warping of the product.

4. The un-loading or de-molding step.
As soon as the product inside te mould has cooled successfully, the person handling the process can then remove the completed product from the mould. The process is repeated from the start, supplying a number of exact products.

For more information on the different rotational rotomolding options offered for the Waterloo IA 50701 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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