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

rotational moulding-Glenwood-Rotational moulding refers to a plastic manufacturing technique that generates hollow stress-free products. The function utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have several shapes, sizes and colors. This procedure is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The benefit that makes this unique from other plastic manufacturing methods in that no pressure is involved. It also has few competitors when it involves the creation of large hollow products which are long-lasting and inexpensive.There is a wide variety of items that are produced by this process including large size water tanks, automobile items, intricate molded medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in regards to design 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 Glenwood MN 56334, 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

Plastic Manufacturing-Glenwood-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 Glenwood 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 Procedure Components

This moulding method has been used since earlier times for creatingvseverl items. Egyptians as an example, employed rotational molding solutions in the creating of ceramics. The Swiss were also employing this rotation type to create hollow chocolate eggs. Some plastic products in the USA were created using this technique some time between 1940 and 1950. The process has however taken long to take affect because it was considered to be a relatively slow process

1. Mold prep work.
A predetermined measure of polymer in grain form is filled into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel material. The coloration needed for the end product is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic manufacturing.

Preheating of the oven follows, and it can 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 secured and installed within the oven.

2. The heating and fusion step.
Once inside the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The spinning is done gradually, about 20 rotations per sixty seconds. One thing that is important at this moment is the amount of time the mould will spend within the oven. If it overstays, the component will lose value and durability, producing a faulty item. If it is taken out from the oven prematurely, the polymer will not have melted correctly, which produces bubbles in the finished product line.

3. Mold cooling down.
When the product 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 component cools, it reduces somewhat for ease of removal from the mold. This is one more measure that depends upon a lot on the correct timing, since rapid cooling reduces the material too rapidly, causing bending of the product.

4. The removing or de-moulding phase.
Once the material within te mold has cooled adequately, the person handling the operation can then take out the finished item from the mould. The process is repeated from the start, supplying a series of exact items.

For more information on the different rotational rotomolding options offered for the Glenwood MN 56334 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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