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

rotocasting-Canby-Rotational molding refers to a plastic production method that generates hollow stress-free product lines. The process relies upon high temperatures and bi axial rotation to come up with seamless, one piece items that have many different forms, colors and sizes. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this different from other plastic manufacturing techniques in that no pressure is needed. It also has few rivals when it pertains to the production of large hollow products which are long lasting and inexpensive.There is a wide range of items that are created by this process including large water tanks, automobile items, sophisticated shaped medical products, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in regards to type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Canby MN 56220, 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 moulding 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-Canby-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 Canby 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 Procedure Components

This moulding process has been used since earlier times for creatingvseverl products. Egyptians for instance, applied rotomoulding methods in the manufacturing of ceramics. The Swiss were also using this rotation technique to generate hollow chocolate eggs. Some plastic items in the USA were developed utilizing this technique some time between 1940 and 1950. Due to the fact that it was regarded to be a rather slow-moving process, the approach has however taken long to become popular

1. Mold fitting.
A predetermined volume of polymer in particle form is loaded into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel substance. The coloring intended for the final item 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 production.

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 mold with the powdered polymer is then secured and inserted inside the oven.

2. The heating up and fusion procedure.
Once inside the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done slowly and gradually, about 20 rotations per minute. The main thing that is important at this point is the amount of time the mould will spend within the oven. If it overstays, the material will lose value and durability, producing a faulty item. If it is removed from the oven prematurely, the polymer will not have melted correctly, which creates bubbles in the finished item.

3. Mould cooling down.
When the component has completely spent the correct 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 material cools, it reduces a little for ease of extraction from the mould. This is an additional measure that depends upon a lot on the correct timing, since rapid cooling shrinks the material too rapidly, causing bending of the material.

4. The un-loading or de-molding phase.
When the component within te mold has cooled adequately, the molder managing the operation can then remove the finished item from the mould. The function is repeated from the beginning, providing a number of exact product lines.

For more information on the different rotational rotomolding options offered for the Canby MN 56220 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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