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

rotocasting-Rapid River-Rotational moulding pertains to a plastic production technique that produces hollow stress-free product lines. The method depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have a wide range of designs, colors and sizes. This procedure is also known 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 processes because no pressure is needed. It also has few competitors when it comes down to the production of large hollow items which are resilient and inexpensive.There is a wide range of product lines that are created by this process including large water tanks, automobile materials, intricate designed medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in regards to type and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Rapid River MI 49878, 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 Molding-Rapid River-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 Michigan 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 Rapid River Michigan 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 Method in Detail

This moulding process has been used since earlier times for creatingvseverl products. Egyptians for example, employed rotational molding methods in the making of ceramics. The Swiss were also making use of this rotation approach to make hollow chocolate eggs. Some plastic product lines in the USA were created using this procedure some time between 1940 and 1950. Considering that it was considered to be a basically slow-moving method, the technique has however taken long to become popular

1. Mould fitting.
A predetermined volume of polymer in particle form is packed into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel substance. The coloring wanted for the finished item 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 type of plastic engineering.

Pre-heating 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 locked and installed within the oven.

2. The heat and fusion procedure.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 spins per min. One thing that is crucial at this moment is the amount of time the mould will spend inside the oven. If it overstays, the product will lose value and strength, creating a poor item. If it is extracted from the oven too early, the polymer will not have melted correctly, which generates bubbles in the finished item.

3. Mould cooling down.
When the product has sufficiently spent the correct amount 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 material cools, it reduces slightly for ease of removal from the mold. This is an additional step that depends upon a lot on the right timing, since rapid cooling decreases the material too quick, causing warping of the product.

4. The un-loading or de-moulding phase.
When the product inside te mould has cooled correctly, the molder handling the operation can then extract the finished product from the mold. The technique is repeated from the beginning, supplying a series of identical products.

For more information on the different rotational molding options offered for the Rapid River MI 49878, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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