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

rotomoulding-Whiteford-Rotational molding refers to a plastic manufacturing procedure that generates hollow stress-free items. The technique depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have a wide range of designs, colors and sizes. This procedure is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing techniques that no pressure is called for. It also has few contenders when it comes down to the creation of large size hollow products which are long lasting and inexpensive.There is a wide variety of products that are produced by this process including big water tanks, automobile items, intricate designed medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in terms of type 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 Whiteford MD 21160, 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

Plastic Products-Whiteford-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 Maryland 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 Whiteford Maryland 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 Method in Detail

This moulding system has been used since earlier times for creatingvseverl product lines. Egyptians as an example, employed rotomoulding solutions in the producing of ceramics. The Swiss were also applying this rotation format to create hollow chocolate eggs. Some plastic products in the USA were created utilizing this approach some time between 1940 and 1950. Given that it was looked at to be a rather slow system, the process has however taken long to catch on

1. Mould fitting.
A predetermined volume of polymer in powder form is packed into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel material. The color tone preferred for the final product 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 style of plastic manufacturing.

Preheating of the oven starts, and it may 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 secured and put within the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The spinning is done slowly and gradually, about 20 spins per minute. Something that is essential at this point is the period of time the mould will spend within the oven. If it overstays, the material will lose stability and durability, producing a poor item. If it is removed from the oven too early, the polymer will not have melted correctly, which creates bubbles in the completed item.

3. Mould cooling.
When the product has sufficiently spent the correct 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 shrinks slightly for ease of extraction from the mold. This is one more step that depends a lot on the right timing, since rapid cooling decreases the material too quick, causing bending of the item.

4. The un-loading or de-molding phase.
Once the material within te mold has cooled correctly, the molder managing the process can then remove the finalized item from the mould. The process is repeated from the start, providing a number of identical items.

For more information on the different rotational rotomolding options offered for the Whiteford MD 21160 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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