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

rotational molding-Weyerhaeuser-Rotational molding pertains to a plastic manufacturing procedure that produces hollow stress-free items. The method depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have various designs, colors and sizes. This technique is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this different from other plastic manufacturing procedures because no pressure is involved. It also has few competitors when it involves the creation of large hollow products which are resilient and inexpensive.There is a wide range of product lines that are generated by this process including large size water tanks, automobile materials, complex shaped medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in terms of style and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Weyerhaeuser WI 54895, 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 roto-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-Weyerhaeuser-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 Weyerhaeuser 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 Process in Detail

This molding procedure has been used since earlier times for creatingvseverl products. Egyptians as an example, used rotational molding procedures in the making of ceramics. The Swiss were also making use of this rotation method to generate hollow chocolate eggs. Some plastic products in the USA were developed using this method some time between 1940 and 1950. The process has however taken long to catch on because it was looked at to be a very slow-moving process

1. Mould readying.
A fixed quantity of polymer in powder form is packed into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel component. The coloration wanted 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 design of plastic engineering.

Preheating of the oven follows, and it may 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 placed inside the oven.

2. The heating and fusion step.
Once inside the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The spinning is done slowly and gradually, about 20 revolutions per min. The main thing that is vital at this moment is the amount of time the mold will spend within the oven. If it overstays, the product will lose value and durability, making a poor item. If it is taken out from the oven prematurely, the polymer will not have flowed properly, which creates bubbles in the finalized product line.

3. Mold cooling down.
When the material has sufficiently spent the right 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 generates a cool mist. When the product cools, it reduces a little for ease of removal from the mould. This is an additional step that relies a lot on the right timing, since quick cooling decreases the material too rapidly, causing warping of the material.

4. The discharging or de-molding phase.
When the material within te mould has cooled properly, the molder taking care of the process can then take out the finished product from the mold. The procedure is repeated from the start, giving a series of identical items.

For more information on the different rotational molding options offered for the Weyerhaeuser WI 54895 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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