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

rotocasting-Washington Island-Rotational molding pertains to a plastic production practice that generates hollow stress-free products. The procedure utilizes high temperatures and bi axial rotation to come up with seamless, one piece items that have many different shapes, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing techniques in that no pressure is needed. It also has few rivals when it comes down to the creation of sizable hollow items which are long-lasting and inexpensive.There is a wide variety of product lines that are developed by this process including big water tanks, automobile materials, sophisticated shaped medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in terms of type and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Washington Island WI 54246, 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

Plastic Molding-Washington Island-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 Wisconsin 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 Washington Island Wisconsin 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 Components

This moulding operation has been used since earlier times for creatingvseverl products. Egyptians for instance, applied rotomoulding procedures in the making of ceramics. The Swiss were also using this rotation technique to make hollow chocolate eggs. Some plastic items in the USA were manufactured using this method some time between 1940 and 1950. The process has however taken long to take affect because it was thought of to be a somewhat slow-moving process

1. Mold prep work.
A fixed amount of polymer in particle form is filled into a hollow mold. The mould is usually built from cast aluminium or sheet steel substance. The color tone needed 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 type of plastic manufacturing.

Pre-heating 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 put inside the oven.

2. The heating up and fusion phase.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done slowly and gradually, about 20 spins per minute. Something that is essential at this moment is the period of time the mould will spend inside the oven. If it overstays, the component will lose stability and durability, creating a weak product. If it is removed from the oven prematurely, the polymer will not have flowed correctly, which creates bubbles in the completed item.

3. Mold cooling.
When the product has sufficiently spent the enough of time in the oven, it is then removed 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 slightly for ease of extraction from the mold. This is one more procedure that depends a lot on the ideal timing, since rapid cooling reduces the material too quickly, causing warping of the material.

4. The discharging or de-moulding step.
When the material inside te mold has cooled adequately, the molder managing the process can then remove the finished product from the mold. The process is repeated from the beginning, providing a number of exact products.

For more information on the different rotational molding options offered for the Washington Island WI 54246 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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