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

roto-molding-Lansing-Rotational molding pertains to a plastic manufacturing practice that makes hollow stress-free product lines. The function uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying forms, sizes and colors. This technique is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The attribute that makes this different from other plastic manufacturing processes that no pressure is needed. It also has few contenders when it comes down to the production of sizable hollow products which are durable and inexpensive.There is a variety of products that are produced by this process including big water tanks, automobile items, sophisticated molded medical products, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in terms of style 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 Lansing MI 48901, 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 Manufacturing-Lansing-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 Lansing 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 Process Components

This molding system has been used since early times for creatingvseverl products. Egyptians for instance, utilized rotomoulding procedures in the making of ceramics. The Swiss were also using this rotation style to make hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this method some time between 1940 and 1950. The procedure has however taken very long to take affect because it was thought of to be a relatively slow process

1. Mould fitting.
A predetermined measure of polymer in powder form is packed into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel material. The color intended for the finished 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 style of plastic manufacturing.

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 put within the oven.

2. The heating and fusion phase.
Once within the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done slowly and gradually, about 20 spins per min. Something that is vital at this moment is the amount of time the mould will spend within the oven. If it stays to long, the material will lose stability and strength, creating a weak item. If it is taken out from the oven too early, the polymer will not have liquefied correctly, which generates bubbles in the completed item.

3. Mold cooling.
When the product has completely spent the right 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 component cools, it reduces slightly for ease of removal from the mould. This is one more measure that depends upon a lot on the right timing, since rapid cooling reduces the material too quick, causing warping of the item.

4. The offloading or de-molding phase.
Once the material within te mold has cooled effectively, the molder managing the procedure can then take out the finished product from the mold. The function is repeated from the beginning, supplying a number of exact products.

For more information on the different rotational molding options offered for the Lansing MI 48901, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic manufacturing

Local Resources

Process Example
Google Map