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

rotomolding-Newport News-Rotational molding pertains to a plastic production technique that creates hollow stress-free items. The process utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have several 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 types.

The attribute that makes this different from other plastic manufacturing methods that no pressure is involved. It also has few contenders when it involves the production of large size hollow products which are durable and inexpensive.There is a variety of product lines that are created by this process including large water tanks, automobile materials, sophisticated molded medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the flexibility in terms of design and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Newport News VA 23601, 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

Custom Molded-Newport News-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 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 Newport News 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 Roto-Molding Procedure Components

This moulding method has been used since early times for creatingvseverl products. Egyptians for instance, worked with rotomoulding solutions in the producing of ceramics. The Swiss were also working with this rotation type to make hollow chocolate eggs. Some plastic items in the USA were created utilizing this technique some time between 1940 and 1950. Because it was thought of to be a rather slow-moving system, the system has however taken long to become popular

1. Mould prep work.
A fixed amount of polymer in powder form is loaded into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel material. The colour preferred for the end 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 engineering.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then locked and installed inside the oven.

2. The heat and fusion phase.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The turning is done slowly, about 20 revolutions per sixty seconds. Something that is crucial at this moment is the amount of time the mould will spend within the oven. If it stays to long, the material will lose value and strength, generating a poor item. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which produces bubbles in the completed product.

3. Mold cooling down.
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 material cools, it reduces somewhat for ease of extraction from the mould. This is an additional step that relies a lot on the ideal timing, since quick cooling decreases the material too rapidly, causing warping of the material.

4. The un-loading or de-molding phase.
When the product inside te mold has cooled successfully, the person taking care of the process can then remove the completed product from the mould. The procedure is repeated from the beginning, making a series of exact items.

For more information on the different rotational rotomolding options offered for the Newport News VA 23601 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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