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

rotational moulding-Glenwood-Rotational molding refers to a plastic manufacturing procedure that makes hollow stress-free product lines. The function relies upon high temperatures and bi axial rotation to come up with seamless, one piece objects that have many different shapes, sizes and colors. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing methods because no pressure is called for. It also has few contenders when it comes down to the production of large size hollow items which are resilient and inexpensive.There is a wide variety of items that are generated by this process including big water tanks, automobile items, sophisticated designed medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Glenwood AR 71943, 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-Glenwood-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 Glenwood 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 Rotomoulding Process in Detail

This moulding system has been used since early times for creatingvseverl items. Egyptians for instance, employed rotocasting solutions in the producing of ceramics. The Swiss were also applying this rotation design to generate hollow chocolate eggs. Some plastic products in the USA were made utilizing this method some time between 1940 and 1950. Since it was looked at to be a somewhat slow-moving system, the procedure has however taken long to catch on

1. Mold prep work.
A predetermined amount of polymer in powder form is loaded into a hollow mould. The mold is usually built from cast aluminium or sheet steel material. The coloring intended for the finished 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 format of plastic assembly.

Preheating of the oven starts, 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 positioned within the oven.

2. The heat and fusion process.
Once within 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 rotation is done slowly and gradually, about 20 revolutions per sixty seconds. The main thing that is vital at this moment is the amount of time the mold will spend inside the oven. If it overstays, the component will lose stability and durability, generating a poor product. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which generates bubbles in the finalized product line.

3. Mould cooling down.
When the product has completely spent the correct amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it reduces a little for ease of extraction from the mould. This is one more step that depends a lot on the right timing, since quick cooling shrinks the material too quickly, causing bending of the product.

4. The unloading or de-molding phase.
Once the component within te mould has cooled adequately, the molder handling the process can then remove the completed product from the mould. The technique is repeated from the start, providing a number of identical product lines.

For more information on the different rotational rotomolding options offered for the Glenwood AR 71943 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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