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

rotomolding-Grafton-Rotational molding pertains to a plastic production procedure that produces hollow stress-free items. The function relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have several designs, sizes and colors. This procedure is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing processes in that no pressure is required. It also has few contenders when it comes to the manufacture of large hollow products which are long-lasting and inexpensive.There is a variety of product lines that are developed by this process including large size water tanks, automobile materials, sophisticated molded medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in regards to type and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Grafton WI 53024, 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-Grafton-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 Grafton 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 molding operation has been used since earlier times for creatingvseverl items. Egyptians as an example, worked with roto-molding procedures in the creating of ceramics. The Swiss were also working with this rotation type to generate hollow chocolate eggs. Some plastic items in the USA were made using this technique some time between 1940 and 1950. The system has however taken very long to take affect because it was looked at as being a pretty slow-moving process

1. Mould readying.
A predetermined volume of polymer in grain form is filled into a hollow mould. The mould is usually made from cast aluminium or sheet steel substance. The color intended 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 format of plastic assembly.

Pre-heating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then sealed and installed into the oven.

2. The heat and fusion phase.
Once within the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The turning is done slowly, about 20 revolutions per sixty seconds. Something that is crucial at this moment is the period of time the mold will spend inside the oven. If it stays to long, the material will lose value and durability, producing a poor item. If it is taken out from the oven too early, the polymer will not have melted properly, which generates bubbles in the completed item.

3. Mould cooling.
When the component has sufficiently spent the right 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 material cools, it reduces somewhat for ease of removal from the mold. This is one more measure that depends upon a lot on the right timing, since quick cooling reduces the material too quick, causing warping of the material.

4. The discharging or de-moulding phase.
As soon as the component within te mould has cooled effectively, the person handling the operation can then extract the completed item from the mold. The process is repeated from the beginning, making a number of identical product lines.

For more information on the different rotational molding options offered for the Grafton WI 53024 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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