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

rotational moulding-Elwood-Rotational moulding refers to a plastic production technique that creates hollow stress-free items. The procedure depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have varying forms, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The feature that makes this unique from other plastic manufacturing processes in that no pressure is required. It also has few rivals when it comes to the production of large size hollow products which are durable and inexpensive.There is a wide range of items that are generated by this process including big water tanks, automobile materials, complex shaped medical items, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility 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 Elwood NE 68937, 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 rotocasting 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-Elwood-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 Nebraska 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 Elwood Nebraska 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 Components

This molding system has been used since early times for creatingvseverl product lines. Egyptians for example, utilized rotational molding methods in the making of ceramics. The Swiss were also employing this rotation approach to make hollow chocolate eggs. Some plastic product lines in the USA were developed utilizing this approach some time between 1940 and 1950. Due to the fact that it was regarded to be a rather slow process, the process has however taken long to become popular

1. Mould fitting.
A predetermined amount of polymer in particle form is loaded into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel component. The colour desired for the final product 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 production.

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 locked and inserted within the oven.

2. The heating and fusion procedure.
Once inside the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The turning is done slowly and gradually, about 20 rotations per min. The main thing that is important at this moment is the period of time the mold will spend within the oven. If it overstays, the product will lose stability and strength, creating a faulty product. If it is extracted from the oven too early, the polymer will not have liquefied properly, which generates bubbles in the finished item.

3. Mould cooling.
When the product has completely spent the right amount of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it shrinks slightly for ease of removal from the mould. This is one more procedure that depends upon a lot on the right timing, since quick cooling shrinks the material too rapidly, causing warping of the material.

4. The offloading or de-moulding step.
As soon as the product within te mould has cooled correctly, the person handling the process can then remove the completed product from the mold. The procedure is repeated from the start, giving a series of exact product lines.

For more information on the different rotational rotomolding options offered for the Elwood NE 68937 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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