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

rotocasting-Iron River-Rotational moulding refers to a plastic manufacturing method that generates hollow stress-free items. The procedure depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have several designs, colors and sizes. This procedure is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The component that makes this different from other plastic manufacturing methods in that no pressure is required. It also has few contenders when it pertains to the manufacture of large hollow products which are long lasting and inexpensive.There is a wide range of products that are generated by this process including big water tanks, automobile items, sophisticated shaped medical items, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in regards to 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 Iron River WI 54847, 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 rotocasting 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 Molding-Iron River-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 Iron River 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 Roto-Molding Procedure Components

This moulding operation has been used since earlier times for creatingvseverl products. Egyptians for example, employed rotocasting methods in the making of ceramics. The Swiss were also employing this rotation style to make hollow chocolate eggs. Some plastic product lines in the USA were created using this method some time between 1940 and 1950. Since it was thought of to be a fairly slow-moving approach, the approach has however taken long to become popular

1. Mould readying.
A fixed volume of polymer in grain form is packed into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel component. The coloring desired for the final item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic manufacturing.

Preheating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mold with the powdered polymer is then locked and inserted inside the oven.

2. The heat and fusion phase.
Once within the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The rotation is done slowly, about 20 spins per sixty seconds. Something that is important at this point is the period of time the mold will spend inside the oven. If it overstays, the component will lose value and strength, making a faulty product. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which develops bubbles in the finished product.

3. Mould cooling.
When the material has sufficiently spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the product cools, it shrinks slightly for ease of extraction from the mould. This is yet another step that relies a lot on the right timing, since rapid cooling decreases the material too rapidly, causing bending of the item.

4. The offloading or de-moulding phase.
As soon as the material inside te mold has cooled correctly, the person handling the process can then extract the finalized item from the mould. The process is repeated from the beginning, providing a number of similar product lines.

For more information on the different rotational molding options offered for the Iron River WI 54847 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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