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

roto-molding-Hamlin-Rotational moulding refers to a plastic manufacturing method that creates hollow stress-free products. The process uses high temperatures and bi axial rotation to come up with seamless, one piece items that have various forms, colors and sizes. This method is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing procedures in that no pressure is needed. It also has few contenders when it comes to the creation of large size hollow products which are long lasting and inexpensive.There is a wide range of products that are developed by this process including big water tanks, automobile items, intricate shaped medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is because of the versatility in regards to 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 Hamlin WV 25523, 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 rotomoulding 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-Hamlin-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 Hamlin 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 Rotomolding Method in Detail

This molding system has been used since early times for creatingvseverl products. Egyptians for example, worked with rotational molding methods in the creating of ceramics. The Swiss were also working with this rotation technique to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this approach some time between 1940 and 1950. Given that it was thought of to be a relatively slow technique, the process has however taken long to become popular

1. Mould fitting.
A fixed quantity of polymer in particle form is packed into a hollow mould. The mould is usually made from cast aluminium or sheet steel substance. The colour wanted for the finished goods 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 production.

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

2. The heat and fusion procedure.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done gradually, about 20 spins per sixty seconds. One thing that is important at this moment is the amount of time the mould will spend within the oven. If it overstays, the material will lose stability and strength, generating a poor item. If it is taken out from the oven too early, the polymer will not have flowed correctly, which produces bubbles in the finalized item.

3. Mold cooling.
When the product has sufficiently spent the right 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 product cools, it shrinks slightly for ease of extraction from the mold. This is an additional procedure that depends a lot on the right timing, since rapid cooling decreases the material too fast, causing bending of the product.

4. The offloading or de-moulding step.
When the component within te mold has cooled properly, the molder managing the procedure can then take out the finished item from the mold. The function is repeated from the start, giving a series of identical items.

For more information on the different rotational rotomolding options offered for the Hamlin WV 25523 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 custom molding

Local Resources

Production Example
Google Map