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

rotational molding-Strum-Rotational molding pertains to a plastic manufacturing procedure that generates hollow stress-free products. The process depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have various shapes, sizes and colors. This technique is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this unique from other plastic manufacturing processes that no pressure is required. It also has few contenders when it comes down to the creation of large size hollow products which are long-lasting and inexpensive.There is a wide variety of products that are created by this process including large size water tanks, automobile products, complex molded medical products, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in regards to design 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 Strum WI 54770, 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-Strum-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 Strum 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 Components

This molding procedure has been used since earlier times for creatingvseverl product lines. Egyptians for instance, applied rotational molding methods in the creating of ceramics. The Swiss were also making use of this rotation design to create hollow chocolate eggs. Some plastic items in the USA were developed using this approach some time between 1940 and 1950. Since it was viewed to be a fairly slow-moving method, the approach has however taken long to catch on

1. Mould fitting.
A fixed amount of polymer in particle form is filled into a hollow mold. The mold is usually crafted from cast aluminium or sheet steel substance. The color desired for the finished product is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Pre-heating 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 mold with the powdered polymer is then sealed and positioned into the oven.

2. The heating and fusion process.
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 revolutions per min. The main thing that is important at this point is the amount of time the mould will spend inside the oven. If it overstays, the component will lose stability and durability, producing a weak item. If it is extracted from the oven too early, the polymer will not have melted correctly, which generates bubbles in the completed item.

3. Mould cooling down.
When the product has sufficiently spent the correct 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 generates a cool mist. When the material cools, it shrinks somewhat for ease of extraction from the mould. This is another procedure that relies a lot on the ideal timing, since quick cooling shrinks the material too fast, causing bending of the product.

4. The unloading or de-molding phase.
Once the product inside te mould has cooled successfully, the person managing the procedure can then extract the finalized item from the mould. The process is repeated from the beginning, giving a series of similar products.

For more information on the different rotational molding options offered for the Strum WI 54770 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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