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

rotocasting-Dickinson-Rotational moulding refers to a plastic production technique that creates hollow stress-free products. The process utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have several shapes, colors and sizes. This technique is also known as roto-molding 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 needed. It also has few rivals when it comes to the creation of sizable hollow products which are resilient and inexpensive.There is a wide range of product lines that are generated by this process including big water tanks, automobile items, intricate molded medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in regards to type and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Dickinson ND 58601, 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 Products-Dickinson-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 North Dakota 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 Dickinson North Dakota 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 molding technique has been used since ancient times for creatingvseverl items. Egyptians as an example, employed rotational molding systems in the producing of ceramics. The Swiss were also working with this rotation design to generate hollow chocolate eggs. Some plastic product lines in the USA were manufactured using this procedure some time between 1940 and 1950. The system has however taken long to take affect because it was considered as being a rather slow-moving process

1. Mold preparation.
A predetermined measure of polymer in grain form is filled into a hollow mould. The mold is usually made of cast aluminium or sheet steel substance. The color needed for the finished product 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 style of plastic assembly.

Preheating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then locked and inserted into the oven.

2. The heating and fusion step.
Once inside the oven, the mold is spun on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The rotation is done slowly, about 20 rotations per sixty seconds. The main thing that is vital at this point is the period of time the mold will spend within the oven. If it stays to long, the component will lose stability and strength, making a weak product. If it is removed from the oven too early, the polymer will not have liquefied correctly, which produces bubbles in the finished product.

3. Mold cooling.
When the component 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 a cool mist. When the component cools, it reduces somewhat for ease of removal from the mould. This is another measure that depends upon a lot on the right timing, since rapid cooling decreases the material too quick, causing warping of the item.

4. The discharging or de-moulding phase.
When the product inside te mould has cooled successfully, the molder handling the procedure can then take out the completed product from the mold. The technique is repeated from the beginning, giving a series of similar items.

For more information on the different rotational rotomolding options offered for the Dickinson ND 58601 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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