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

rotational molding-Colora-Rotational molding refers to a plastic manufacturing practice that generates hollow stress-free items. The method uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have a wide range of forms, sizes and colors. This procedure is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing processes because no pressure is called for. It also has few rivals when it comes down to the production of large size hollow products which are resilient and inexpensive.There is a wide range of product lines that are created by this process including large size water tanks, automobile items, intricate shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the flexibility in terms of design 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 Colora MD 21917, 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-Colora-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 Colora 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 earlier times for creatingvseverl items. Egyptians as an example, applied rotational molding solutions in the manufacturing of ceramics. The Swiss were also applying this rotation design to generate hollow chocolate eggs. Some plastic product lines in the USA were developed using this procedure some time between 1940 and 1950. Due to the fact that it was thought of to be a fairly slow-moving technique, the system has however taken long to catch on

1. Mold fitting.
A predetermined volume of polymer in particle form is filled into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The color intended for the end goods is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic manufacturing.

Preheating of the oven starts, and it can 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 inserted into the oven.

2. The heat and fusion procedure.
Once placed into the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done slowly and gradually, about 20 rotations per minute. The main thing that is critical at this point is the amount of time the mould will spend inside the oven. If it stays to long, the component will lose value and strength, making a weak item. If it is removed from the oven too early, the polymer will not have flowed correctly, which generates bubbles in the finalized item.

3. Mold cooling down.
When the material has completely spent the enough of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it reduces somewhat for ease of removal from the mold. This is another measure that depends a lot on the ideal timing, since rapid cooling reduces the material too quickly, causing warping of the item.

4. The unloading or de-moulding phase.
As soon as the material within te mould has cooled adequately, the person managing the operation can then extract the completed product from the mold. The function is repeated from the start, making a number of identical items.

For more information on the different rotational rotomolding options offered for the Colora MD 21917 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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