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rotomoulding-Tampa-Rotational molding refers to a plastic production procedure that creates hollow stress-free product lines. The procedure utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying shapes, colors and sizes. This method is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing procedures that no pressure is required. It also has few contenders when it comes to the production of large hollow items which are resilient and inexpensive.There is a wide range of items that are generated by this process including big water tanks, automobile items, intricate molded medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Tampa FL 33601, 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 rotomolding 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 Products-Tampa-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 Tampa 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 Rotomoulding Procedure in Detail

This molding operation has been used since early times for creatingvseverl items. Egyptians for example, applied rotomoulding techniques in the of ceramics. The Swiss were also employing this rotation design to create hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this approach some time between 1940 and 1950. The process has however taken very long to take affect because it was looked at to be a somewhat slow-moving process

1. Mold fitting.
A fixed amount of polymer in grain form is loaded into a hollow mold. The mould is usually made of cast aluminium or sheet steel component. The coloration needed 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 design 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 positioned within the oven.

2. The heat and fusion phase.
Once placed into the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The rotation is done gradually, about 20 revolutions per minute. Something that is important at this point is the period of time the mold will spend inside the oven. If it stays to long, the component will lose value and strength, generating a weak item. If it is removed from the oven prematurely, the polymer will not have flowed properly, which creates bubbles in the completed product line.

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

4. The discharging or de-moulding phase.
Once the product within te mould has cooled successfully, the molder taking care of the operation can then remove the completed item from the mold. The technique is repeated from the beginning, supplying a series of similar products.

For more information on the different rotational rotomolding options offered for the Tampa FL 33601 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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