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

rotational moulding-Dysart-Rotational molding pertains to a plastic production procedure that makes hollow stress-free product lines. The method utilizes high temperatures and bi axial rotation to follow up with seamless, one piece items that have a wide range of forms, colors and sizes. This method is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The feature that makes this different from other plastic manufacturing techniques because no pressure is called for. It also has few rivals when it comes down to the creation of large hollow items which are durable and inexpensive.There is a wide variety of products that are created by this process including big water tanks, automobile products, sophisticated molded medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in regards to type and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Dysart IA 52224, 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

Custom Molding-Dysart-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 Iowa 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 Dysart Iowa 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 moulding process has been used since earlier times for creatingvseverl products. Egyptians for example, employed rotational molding techniques in the producing of ceramics. The Swiss were also applying this rotation design to create hollow chocolate eggs. Some plastic product lines in the USA were made using this procedure some time between 1940 and 1950. The system has however taken very long to take affect because it was considered as being a relatively slow process

1. Mould preparation.
A fixed measure of polymer in powder form is packed into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel substance. The coloring wanted for the end item 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 design of plastic manufacturing.

Preheating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mold with the powdered polymer is then locked and positioned inside the oven.

2. The heat and fusion process.
Once inside the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The rotation is done slowly, about 20 rotations per min. Something that is critical at this point is the amount of time the mold will spend within the oven. If it overstays, the component will lose stability and durability, making a weak item. If it is removed from the oven prematurely, the polymer will not have melted properly, which generates bubbles in the finalized product line.

3. Mold cooling.
When the material has completely spent the enough 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 creates a cool mist. When the product cools, it reduces slightly for ease of removal from the mold. This is another step that relies a lot on the right timing, since rapid cooling decreases the material too rapidly, causing bending of the material.

4. The discharging or de-moulding step.
Once the material inside te mold has cooled correctly, the person managing the process can then take out the finished product from the mold. The process is repeated from the beginning, making a number of similar product lines.

For more information on the different rotational rotomolding options offered for the Dysart IA 52224 area, 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 products

Local Resources

Production Example
Google Map