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

rotomolding-Greenwood-Rotational moulding refers to a plastic manufacturing technique that produces hollow stress-free items. The process depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have various forms, sizes and colors. This method is also called 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 techniques that no pressure is needed. It also has few competitors when it involves the production of sizable hollow items which are long lasting and inexpensive.There is a wide variety of items that are generated by this process including large water tanks, automobile products, sophisticated molded medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of style and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Greenwood AR 72936, 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

Plastic Molding-Greenwood-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 Arkansas 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 Greenwood Arkansas 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 Method Components

This molding procedure has been used since earlier times for creatingvseverl product lines. Egyptians for example, employed roto-molding systems in the making of ceramics. The Swiss were also making use of this rotation method to create hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this technique some time between 1940 and 1950. Given that it was looked at to be a very slow technique, the system has however taken long to become popular

1. Mold preparation.
A predetermined volume of polymer in powder form is loaded into a hollow mold. The mould is usually made of cast aluminium or sheet steel component. The colour wanted for the final item 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 assembly.

Preheating 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 mould with the powdered polymer is then sealed and inserted inside the oven.

2. The heat and fusion procedure.
Once within the oven, the mold is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The rotation is done slowly and gradually, about 20 revolutions per sixty seconds. One thing that is crucial at this moment is the period of time the mold will spend within the oven. If it stays to long, the product will lose value and durability, creating a faulty product. If it is removed from the oven too early, the polymer will not have melted correctly, which creates bubbles in the finalized product line.

3. Mould cooling.
When the component has sufficiently spent the enough 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 component cools, it shrinks slightly for ease of extraction from the mold. This is an additional measure that relies a lot on the right timing, since rapid cooling reduces the material too rapidly, causing warping of the material.

4. The unloading or de-molding step.
Once the material within te mould has cooled adequately, the molder taking care of the procedure can then take out the finalized product from the mould. The technique is repeated from the beginning, providing a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Greenwood AR 72936 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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