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

rotomoulding-Spring Grove-Rotational moulding refers to a plastic production practice that creates hollow stress-free product lines. The procedure relies on high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying forms, colors and sizes. This procedure is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The function that makes this unique from other plastic manufacturing methods in that no pressure is called for. It also has few competitors when it involves the manufacture of sizable hollow products which are long-lasting and inexpensive.There is a variety of products that are developed by this process including big water tanks, automobile materials, complex molded medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the versatility in terms of style and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Spring Grove MN 55974, 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 Molding-Spring Grove-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 Spring Grove 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 Rotomolding Process in Detail

This moulding system has been used since earlier times for creatingvseverl products. Egyptians for instance, used rotational molding procedures in the of ceramics. The Swiss were also applying this rotation method to make hollow chocolate eggs. Some plastic items in the USA were made using this method some time between 1940 and 1950. The system has however taken very long to take affect because it was looked at as being a somewhat slow process

1. Mould readying.
A predetermined measure of polymer in particle form is packed into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel material. The color tone intended for the end goods is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic manufacturing.

Preheating of the oven starts, and it may 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 secured and positioned inside the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The rotation is done slowly, about 20 rotations per minute. Something that is vital at this moment is the period of time the mould will spend inside the oven. If it overstays, the component will lose value and strength, making a poor item. If it is removed from the oven prematurely, the polymer will not have flowed correctly, which creates bubbles in the finalized product line.

3. Mould cooling.
When the material has sufficiently spent the enough 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 creates a cool mist. When the material cools, it shrinks slightly for ease of extraction from the mould. This is an additional measure that relies a lot on the right timing, since quick cooling shrinks the material too quick, causing warping of the product.

4. The offloading or de-molding step.
Once the component within te mould has cooled correctly, the person handling the procedure can then extract the finalized item from the mould. The process is repeated from the start, providing a series of similar items.

For more information on the different rotational rotomolding options offered for the Spring Grove MN 55974 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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