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

rotocasting-Cannon Falls-Rotational molding refers to a plastic production practice that produces hollow stress-free items. The technique depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have different shapes, sizes and colors. This technique is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The attribute that makes this different from other plastic manufacturing techniques in that no pressure is needed. It also has few rivals when it comes down to the manufacture of large size hollow products which are durable and inexpensive.There is a wide range of items that are produced by this process including large size water tanks, automobile products, complex molded medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in regards to style and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Cannon Falls MN 55009, 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 rotomolding 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-Cannon Falls-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 Cannon Falls 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 Rotomoulding Process in Detail

This moulding system has been used since ancient times for creatingvseverl product lines. Egyptians for instance, utilized rotomoulding procedures in the creating of ceramics. The Swiss were also using this rotation technique to generate hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this approach some time between 1940 and 1950. Because it was regarded to be a somewhat slow procedure, the technique has however taken long to catch on

1. Mould readying.
A fixed amount of polymer in powder form is filled into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel substance. The coloration wanted for the end goods is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic engineering.

Pre-heating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then locked and put within the oven.

2. The heat and fusion procedure.
Once inside the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The spinning is done gradually, about 20 rotations per minute. Something that is crucial at this moment is the amount of time the mould will spend within the oven. If it stays to long, the material will lose stability and strength, producing a faulty item. If it is taken out from the oven too early, the polymer will not have melted correctly, which produces bubbles in the finalized item.

3. Mold cooling down.
When the component has sufficiently 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 a cool mist. When the product cools, it shrinks a little for ease of extraction from the mold. This is yet another step that depends a lot on the correct timing, since rapid cooling decreases the material too fast, causing bending of the material.

4. The offloading or de-moulding phase.
Once the component inside te mould has cooled successfully, the person handling the process can then remove the completed product from the mould. The technique is repeated from the beginning, providing a number of identical product lines.

For more information on the different rotational rotomolding options offered for the Cannon Falls MN 55009 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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