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

rotational moulding-Harpers Ferry-Rotational moulding refers to a plastic production practice that generates hollow stress-free items. The technique depends on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different forms, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The feature that makes this different from other plastic manufacturing processes that no pressure is called for. It also has few rivals when it comes to the production of large hollow items which are resilient and inexpensive.There is a variety of items that are generated by this process including large size water tanks, automobile materials, complex designed medical items, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in regards to design and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Harpers Ferry WV 25425, 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 Molded-Harpers Ferry-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 Harpers Ferry 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 Procedure in Detail

This moulding system has been used since earlier times for creatingvseverl product lines. Egyptians as an example, applied rotational molding techniques in the producing of ceramics. The Swiss were also making use of this rotation format to generate hollow chocolate eggs. Some plastic products in the USA were manufactured using this procedure some time between 1940 and 1950. The procedure has however taken very long to take affect because it was considered to be a moderately slow-moving process

1. Mould readying.
A predetermined volume of polymer in grain form is filled into a hollow mould. The mould is usually comprised of cast aluminium or sheet steel substance. The color tone intended for the end goods is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic assembly.

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

2. The heating and fusion procedure.
Once inside the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done gradually, about 20 rotations per minute. The main thing that is essential at this moment is the amount of time the mold will spend within the oven. If it overstays, the component will lose stability and strength, making a faulty item. If it is extracted from the oven prematurely, the polymer will not have flowed correctly, which produces bubbles in the completed product line.

3. Mould cooling down.
When the component has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it reduces slightly for ease of extraction from the mould. This is another measure that depends upon a lot on the right timing, since quick cooling reduces the material too fast, causing warping of the material.

4. The offloading or de-moulding step.
As soon as the material inside te mold has cooled correctly, the molder handling the process can then extract the finalized item from the mold. The function is repeated from the start, giving a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Harpers Ferry WV 25425 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 molded

Local Resources

Production Example
Google Map