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rotomoulding-Miami-Rotational molding refers to a plastic production technique that makes hollow stress-free items. The technique relies upon high temperatures and bi axial rotation to come up with seamless, one piece objects that have a wide range of forms, colors and sizes. This technique is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this different from other plastic manufacturing techniques in that no pressure is involved. It also has few contenders when it pertains to the manufacture of sizable hollow products which are long lasting and inexpensive.There is a wide variety of product lines that are developed by this process including large size water tanks, automobile materials, sophisticated molded medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in regards to design 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 Miami FL 33101, 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

Plastic Manufacturing-Miami-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 Florida 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 Miami Florida 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 operation has been used since early times for creatingvseverl products. Egyptians for instance, used roto-molding solutions in the producing of ceramics. The Swiss were also utilizing this rotation format to make hollow chocolate eggs. Some plastic product lines in the USA were developed using this procedure some time between 1940 and 1950. The process has however taken long to catch on because it was thought of to be a moderately slow process

1. Mold fitting.
A fixed measure of polymer in powder form is loaded into a hollow mould. The mold is usually made of cast aluminium or sheet steel component. The color needed 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 style of plastic production.

Preheating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then secured and installed inside the oven.

2. The heat and fusion phase.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done slowly, about 20 spins per sixty seconds. The main thing that is important at this point is the amount of time the mold will spend within the oven. If it stays to long, the material will lose value and strength, creating a faulty item. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which produces bubbles in the finished product.

3. Mould cooling.
When the material has sufficiently spent the enough 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 component cools, it shrinks somewhat for ease of removal from the mold. This is another step that relies a lot on the right timing, since rapid cooling shrinks the material too fast, causing bending of the product.

4. The offloading or de-moulding phase.
Once the product within te mold has cooled successfully, the molder taking care of the procedure can then remove the completed item from the mold. The function is repeated from the start, supplying a series of exact products.

For more information on the different rotational rotomolding options offered for the Miami FL 33101 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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