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

roto-molding-Annandale-Rotational moulding refers to a plastic production procedure that makes hollow stress-free items. The function utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have different forms, colors and sizes. This procedure is also called rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing techniques that no pressure is needed. It also has few competitors when it involves the manufacture of sizable hollow products which are long-lasting and inexpensive.There is a wide range of product lines that are developed by this process including big water tanks, automobile materials, sophisticated designed medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility 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 Annandale VA 22003, 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

Plastic Molding-Annandale-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 Annandale 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 Components

This moulding system has been used since early times for creatingvseverl items. Egyptians as an example, worked with rotomoulding techniques in the manufacturing of ceramics. The Swiss were also utilizing this rotation technique to create hollow chocolate eggs. Some plastic products in the USA were made utilizing this approach some time between 1940 and 1950. The system has however taken very long to take affect because it was looked at to be a moderately slow-moving process

1. Mold readying.
A fixed volume of polymer in particle form is filled into a hollow mould. The mould is usually built from cast aluminium or sheet steel material. The color tone preferred for the final product 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 format of plastic assembly.

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

2. The heating and fusion procedure.
Once inside the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The turning is done gradually, about 20 spins per minute. One thing that is vital at this moment is the period of time the mold will spend within the oven. If it overstays, the component will lose value and strength, producing a poor product. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which produces bubbles in the finished product line.

3. Mould cooling down.
When the product has completely 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 component cools, it reduces somewhat for ease of extraction from the mold. This is another procedure that depends a lot on the right timing, since rapid cooling decreases the material too fast, causing warping of the item.

4. The removing or de-molding phase.
Once the component inside te mould has cooled properly, the molder taking care of the process can then extract the finalized product from the mould. The function is repeated from the beginning, making a series of identical items.

For more information on the different rotational rotomolding options offered for the Annandale VA 22003 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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