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

rotational molding-Milford-Rotational molding pertains to a plastic production method that creates hollow stress-free items. The procedure relies upon high temperatures and bi axial rotation to follow up with seamless, one piece products that have varying designs, colors and sizes. This technique 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 unique from other plastic manufacturing procedures because no pressure is called for. It also has few competitors when it pertains to the production of large size hollow products which are resilient and inexpensive.There is a wide range of products that are developed by this process including large water tanks, automobile materials, complex molded medical items, recreation equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in terms of style and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Milford OH 45150, 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 rotational molding 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-Milford-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 Ohio 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 Milford Ohio 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 Method in Detail

This moulding process has been used since earlier times for creatingvseverl product lines. Egyptians for instance, worked with rotocasting techniques in the making of ceramics. The Swiss were also using this rotation approach to create hollow chocolate eggs. Some plastic products in the USA were created using this approach some time between 1940 and 1950. Because it was thought of to be a basically slow system, the system has however taken long to catch on

1. Mold prep work.
A fixed measure of polymer in grain form is loaded into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel component. The coloring intended for the finished product 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 style of plastic manufacturing.

Pre-heating of the oven starts, and it may 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 put within the oven.

2. The heating and fusion process.
Once within the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done gradually, about 20 revolutions per min. One thing that is critical at this point is the amount of time the mould will spend within the oven. If it overstays, the component will lose value and durability, generating a faulty product. If it is taken out from the oven too early, the polymer will not have melted correctly, which develops bubbles in the completed item.

3. Mould cooling down.
When the product has sufficiently spent the correct amount of time in the oven, it is then removed 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 shrinks a little for ease of extraction from the mould. This is another step that depends upon a lot on the correct timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The discharging or de-moulding step.
Once the material inside te mold has cooled correctly, the person handling the process can then remove the completed product from the mould. The technique is repeated from the beginning, giving a number of similar products.

For more information on the different rotational molding options offered for the Milford OH 45150, 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 molding

Local Resources

Process Example
Google Map