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

rotational moulding-Great Mills-Rotational moulding refers to a plastic production technique that produces hollow stress-free product lines. The technique utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have different designs, colors and sizes. This technique is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing processes that no pressure is required. It also has few contenders when it comes to the production of large hollow products which are durable and inexpensive.There is a variety of items that are created by this process including big water tanks, automobile products, intricate shaped medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in terms of style 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 Great Mills MD 20634, 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 roto-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 Molding-Great Mills-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 Great Mills 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 Rotomoulding Procedure in Detail

This molding technique has been used since early times for creatingvseverl items. Egyptians as an example, employed rotomoulding solutions in the producing of ceramics. The Swiss were also using this rotation style to make hollow chocolate eggs. Some plastic items in the USA were made using this procedure some time between 1940 and 1950. Given that it was viewed to be a somewhat slow-moving system, the method has however taken long to become popular

1. Mold prep work.
A predetermined quantity of polymer in powder form is loaded into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel substance. The color tone wanted 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 type of plastic production.

Preheating of the oven follows, and it can 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 secured and placed within the oven.

2. The heat and fusion step.
Once placed into the oven, the mold is revolved on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The rotation is done slowly, about 20 spins per sixty seconds. The main thing that is crucial at this moment is the amount of time the mould will spend inside the oven. If it stays to long, the material will lose stability and durability, producing a weak product. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which creates bubbles in the finished product line.

3. Mold cooling down.
When the material has completely spent the right amount of time in the oven, it is then removed for cooling. This may 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 one more procedure that depends upon a lot on the right timing, since rapid cooling reduces the material too rapidly, causing bending of the item.

4. The unloading or de-moulding step.
Once the product inside te mould has cooled successfully, the person handling the operation can then extract the finalized product from the mold. The process is repeated from the beginning, providing a series of identical products.

For more information on the different rotational rotomolding options offered for the Great Mills MD 20634 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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