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

rotomoulding-Willoughby-Rotational moulding pertains to a plastic production practice that produces hollow stress-free product lines. The function utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have several shapes, sizes and colors. This method is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing techniques that no pressure is required. It also has few competitors when it comes down to the production of large hollow items which are long-lasting and inexpensive.There is a wide range of items that are developed by this process including large size water tanks, automobile items, intricate shaped medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in regards to style and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Willoughby OH 44094, 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 roto-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 Molded-Willoughby-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 Willoughby 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 Process in Detail

This moulding process has been used since ancient times for creatingvseverl product lines. Egyptians for example, used rotocasting systems in the creating of ceramics. The Swiss were also working with this rotation type to generate hollow chocolate eggs. Some plastic products in the USA were manufactured using this approach some time between 1940 and 1950. The procedure has however taken long to catch on because it was thought of as being a somewhat slow process

1. Mould prep work.
A predetermined volume of polymer in grain form is filled into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel component. The colour wanted for the final item is pre compounded into the polymer. The most often 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 sealed and placed inside the oven.

2. The heating and fusion step.
Once within the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done slowly and gradually, about 20 revolutions per min. The main thing that is important at this moment is the amount of time the mould will spend within 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 liquefied correctly, which produces bubbles in the finished product line.

3. Mold 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 one more procedure that depends upon a lot on the correct timing, since quick cooling decreases the material too quick, causing warping of the material.

4. The discharging or de-molding step.
When the component within te mould has cooled adequately, the person managing the process can then take out the finalized product from the mould. The procedure is repeated from the beginning, making a number of similar products.

For more information on the different rotational molding options offered for the Willoughby OH 44094, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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