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

rotocasting-Kent City-Rotational moulding refers to a plastic manufacturing practice that generates hollow stress-free product lines. The method depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of designs, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing procedures because no pressure is needed. It also has few competitors when it comes down to the production of sizable hollow products which are resilient and inexpensive.There is a wide variety of items that are developed by this process including large water tanks, automobile products, intricate 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 makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Kent City MI 49330, 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 rotomoulding 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-Kent City-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 Kent City 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 Roto-Molding Process in Detail

This molding system has been used since earlier times for creatingvseverl items. Egyptians for example, applied rotational molding procedures in the manufacturing of ceramics. The Swiss were also applying this rotation approach to generate hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this procedure some time between 1940 and 1950. Due to the fact that it was considered to be a somewhat slow method, the method has however taken long to catch on

1. Mould preparation.
A predetermined volume of polymer in grain form is loaded into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel substance. The coloring desired for the finished goods is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic assembly.

Pre-heating of the oven follows, and it can 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 locked and installed inside the oven.

2. The heating and fusion step.
Once inside the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The spinning is done gradually, about 20 rotations per min. The main thing that is vital at this point is the period of time the mold will spend inside the oven. If it stays to long, the component will lose stability and durability, creating a weak item. If it is taken out from the oven too early, the polymer will not have flowed properly, which develops bubbles in the completed item.

3. Mould cooling.
When the component has completely spent the correct amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it reduces somewhat for ease of removal from the mould. This is yet another measure that relies a lot on the right timing, since quick cooling shrinks the material too rapidly, causing warping of the product.

4. The removing or de-molding step.
When the product inside te mold has cooled successfully, the molder taking care of the operation can then extract the finished item from the mold. The function is repeated from the beginning, making a series of similar product lines.

For more information on the different rotational molding options offered for the Kent City MI 49330, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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