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

rotocasting-Ironton-Rotational moulding pertains to a plastic production solution that creates hollow stress-free items. The procedure depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of forms, sizes and colors. This method is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing processes because no pressure is involved. It also has few contenders when it comes to the creation of large hollow products which are durable and inexpensive.There is a variety of product lines that are created by this process including big water tanks, automobile materials, intricate shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in terms of 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 Ironton MN 56455, 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

Plastic Products-Ironton-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 Minnesota 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 Ironton Minnesota 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 moulding procedure has been used since early times for creatingvseverl products. Egyptians for example, employed roto-molding methods in the of ceramics. The Swiss were also making use of this rotation approach to generate hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this technique some time between 1940 and 1950. Due to the fact that it was viewed to be a somewhat slow-moving process, the technique has however taken long to become popular

1. Mold readying.
A predetermined volume of polymer in grain form is packed into a hollow mold. The mold is usually constructed from cast aluminium or sheet steel component. The color tone needed for the finished 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 assembly.

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 put inside the oven.

2. The heating and fusion process.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done gradually, about 20 revolutions per sixty seconds. The main thing that is vital at this moment is the period of time the mold will spend inside the oven. If it overstays, the component will lose stability and durability, making a poor item. If it is taken out from the oven prematurely, the polymer will not have liquefied correctly, which develops bubbles in the completed product.

3. Mould cooling.
When the product has sufficiently spent the right amount of time in the oven, it is then removed for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it shrinks somewhat for ease of removal from the mould. This is another step that depends upon a lot on the ideal timing, since rapid cooling reduces the material too rapidly, causing bending of the product.

4. The unloading or de-molding step.
As soon as the product inside te mould has cooled adequately, the molder managing the process can then remove the finalized product from the mould. The technique is repeated from the beginning, giving a series of exact product lines.

For more information on the different rotational rotomolding options offered for the Ironton MN 56455 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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