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

rotomoulding-Martinsburg-Rotational molding refers to a plastic production practice that makes hollow stress-free products. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have different designs, sizes and colors. This procedure is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this different from other plastic manufacturing processes that no pressure is needed. It also has few contenders when it pertains to the production of large size hollow products which are resilient and inexpensive.There is a variety of products that are generated by this process including large water tanks, automobile materials, intricate shaped medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in terms of design and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Martinsburg WV 25401, 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 Molded-Martinsburg-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 Martinsburg 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 moulding process has been used since earlier times for creatingvseverl products. Egyptians as an example, applied rotomoulding solutions in the of ceramics. The Swiss were also employing this rotation type to generate hollow chocolate eggs. Some plastic product lines in the USA were created using this approach some time between 1940 and 1950. Because it was regarded to be a relatively slow process, the system has however taken long to become popular

1. Mold prep work.
A predetermined measure of polymer in powder form is filled into a hollow mould. The mould is usually made from cast aluminium or sheet steel substance. The coloring needed for the finished item is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Pre-heating of the oven follows, 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 placed within the oven.

2. The heating up and fusion process.
Once within the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The spinning is done slowly and gradually, about 20 rotations per minute. Something that is critical at this point is the amount of time the mould will spend inside the oven. If it overstays, the component will lose value and strength, creating a poor item. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which creates bubbles in the finalized item.

3. Mold cooling down.
When the component has sufficiently spent the enough of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it reduces a little for ease of extraction from the mould. This is another step that depends upon a lot on the right timing, since rapid cooling shrinks the material too fast, causing warping of the product.

4. The un-loading or de-moulding phase.
When the component inside te mould has cooled successfully, the person managing the operation can then take out the finished item from the mold. The procedure is repeated from the start, giving a series of identical product lines.

For more information on the different rotational rotomolding options offered for the Martinsburg WV 25401 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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