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

roto-molding-Siren-Rotational molding refers to a plastic manufacturing technique that generates hollow stress-free items. The technique relies on high temperatures and bi axial rotation to come up with seamless, one piece products that have varying forms, sizes and colors. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing processes that no pressure is required. It also has few rivals when it pertains to the manufacture of sizable hollow items which are resilient and inexpensive.There is a variety of items that are generated by this process including big water tanks, automobile items, complex shaped medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of design 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 Siren WI 54872, 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 rotomoulding 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 Manufacturing-Siren-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 Siren 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 Rotomoulding Method Components

This moulding method has been used since earlier times for creatingvseverl products. Egyptians for example, worked with rotocasting procedures in the creating of ceramics. The Swiss were also applying this rotation style to make hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this procedure some time between 1940 and 1950. Given that it was viewed to be a somewhat slow process, the procedure has however taken long to become popular

1. Mold preparation.
A fixed measure of polymer in powder form is filled into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel substance. The coloration desired for the end product 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 style of plastic assembly.

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

2. The heat and fusion process.
Once inside the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done slowly, about 20 spins per sixty seconds. The main thing that is crucial at this moment is the period of time the mold will spend within the oven. If it overstays, the material will lose value and durability, producing a faulty product. If it is removed from the oven prematurely, the polymer will not have liquefied correctly, which generates bubbles in the finalized product.

3. Mould cooling down.
When the component has completely spent the enough of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it reduces a little for ease of extraction from the mould. This is yet another measure that depends upon a lot on the right timing, since quick cooling shrinks the material too quickly, causing bending of the product.

4. The offloading or de-molding step.
As soon as the component within te mould has cooled successfully, the molder managing the process can then extract the completed item from the mould. The process is repeated from the beginning, providing a series of identical product lines.

For more information on the different rotational molding options offered for the Siren WI 54872 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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