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

rotational moulding-Fosston-Rotational moulding pertains to a plastic production procedure that produces hollow stress-free items. The process relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have a variety of designs, colors and sizes. This technique is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing procedures because no pressure is called for. It also has few contenders when it comes to the creation of sizable hollow products which are durable and inexpensive.There is a wide range of product lines that are produced by this process including large water tanks, automobile products, complex molded medical products, leisure equipment, toys, kayaks, industrial 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 Fosston MN 56542, 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 roto-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

Custom Molded-Fosston-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 Fosston 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 molding operation has been used since earlier times for creatingvseverl products. Egyptians for example, employed rotomoulding methods in the of ceramics. The Swiss were also making use of this rotation style to create hollow chocolate eggs. Some plastic products in the USA were created utilizing this procedure some time between 1940 and 1950. Due to the fact that it was viewed to be a rather slow-moving process, the system has however taken long to catch on

1. Mould readying.
A predetermined quantity of polymer in particle form is loaded into a hollow mold. The mold is usually made from cast aluminium or sheet steel substance. The color tone needed for the end goods 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 manufacturing.

Preheating of the oven starts, 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 inside the oven.

2. The heating up and fusion phase.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done gradually, about 20 spins per sixty seconds. Something that is crucial at this point is the amount of time the mould will spend inside the oven. If it stays to long, the material will lose value and durability, producing a poor product. If it is taken out from the oven prematurely, the polymer will not have liquefied correctly, which generates bubbles in the finalized product line.

3. Mould cooling.
When the product has completely spent the right 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 creates a cool mist. When the component cools, it reduces somewhat for ease of removal from the mould. This is another procedure that depends upon a lot on the ideal timing, since quick cooling reduces the material too fast, causing bending of the product.

4. The un-loading or de-moulding phase.
Once the material inside te mould has cooled adequately, the molder handling the operation can then take out the completed product from the mold. The procedure is repeated from the start, supplying a series of identical products.

For more information on the different rotational rotomolding options offered for the Fosston MN 56542 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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