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rotomolding-Morley-Rotational molding pertains to a plastic manufacturing method that generates hollow stress-free products. The procedure utilizes high temperatures and bi axial rotation to follow up with seamless, one piece items that have different designs, sizes and colors. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing processes because no pressure is called for. It also has few competitors when it comes to the creation of large hollow items which are durable and inexpensive.There is a variety of product lines that are produced by this process including large water tanks, automobile materials, complex shaped medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to 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 Morley MI 49336, 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 rotocasting 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-Morley-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 Morley 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 Rotomoulding Method in Detail

This molding procedure has been used since early times for creatingvseverl products. Egyptians as an example, worked with rotational molding procedures in the creating of ceramics. The Swiss were also making use of this rotation technique to create hollow chocolate eggs. Some plastic products in the USA were developed using this method some time between 1940 and 1950. Given that it was regarded to be a basically slow process, the process has however taken long to become popular

1. Mold preparation.
A predetermined amount of polymer in powder form is packed into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel material. The coloration chosen for the final goods 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 format of plastic engineering.

Preheating of the oven starts, and it may 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 secured and positioned inside the oven.

2. The heating and fusion process.
Once placed into the oven, the mould is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The turning is done gradually, about 20 rotations per min. The main thing 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 strength, producing a poor product. If it is removed from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the finished item.

3. Mold cooling.
When the material has sufficiently spent the correct amount of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it shrinks a little for ease of extraction from the mold. This is an additional measure that depends upon a lot on the right timing, since quick cooling shrinks the material too fast, causing warping of the product.

4. The offloading or de-molding phase.
Once the material inside te mould has cooled correctly, the person taking care of the operation can then extract the finalized item from the mould. The technique is repeated from the beginning, supplying a number of exact products.

For more information on the different rotational molding options offered for the Morley MI 49336, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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