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

rotocasting-Shepherdstown-Rotational moulding pertains to a plastic manufacturing solution that creates hollow stress-free items. The function depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have many different designs, colors and sizes. This technique is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing techniques that no pressure is required. It also has few contenders when it comes to the manufacture of large hollow items which are resilient and inexpensive.There is a variety of products that are generated by this process including large water tanks, automobile products, complex shaped medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the flexibility in terms of style and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Shepherdstown WV 25443, 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 Manufacturing-Shepherdstown-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 West Virginia 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 Shepherdstown West Virginia 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 Process in Detail

This moulding method has been used since early times for creatingvseverl products. Egyptians for instance, employed rotational molding methods in the creating of ceramics. The Swiss were also making use of this rotation format to create hollow chocolate eggs. Some plastic product lines in the USA were made using this approach some time between 1940 and 1950. The process has however taken very long to catch on because it was looked at as being a rather slow-moving process

1. Mould preparation.
A fixed volume of polymer in grain form is packed into a hollow mold. The mould is usually made from cast aluminium or sheet steel substance. The color desired for the finished goods 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 type of plastic engineering.

Preheating of the oven follows, 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 heat and fusion phase.
Once placed into the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The spinning is done slowly and gradually, about 20 revolutions per minute. One thing that is vital at this point is the period of time the mold will spend inside the oven. If it stays to long, the component will lose stability and strength, making a weak item. If it is taken out from the oven too early, the polymer will not have melted properly, which develops bubbles in the finalized product line.

3. Mold cooling down.
When the component has completely spent the correct amount 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 product cools, it reduces somewhat for ease of removal from the mold. This is one more measure that relies a lot on the correct timing, since quick cooling decreases the material too rapidly, causing bending of the product.

4. The discharging or de-molding phase.
Once the component inside te mold has cooled adequately, the molder handling the process can then extract the finished item from the mold. The function is repeated from the beginning, making a series of similar items.

For more information on the different rotational rotomolding options offered for the Shepherdstown WV 25443 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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