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

The component that makes this different from other plastic manufacturing processes because no pressure is involved. It also has few rivals when it comes to the creation of sizable hollow items which are durable and inexpensive.There is a variety of products that are created by this process including big water tanks, automobile products, intricate molded medical items, leisure equipment, toys, canoes, industrialized equipment among many others.This is because of 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 North Platte NE 69101, 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

Plastic Products-North Platte-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 North Platte 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 Rotomolding Process Components

This moulding method has been used since earlier times for creatingvseverl products. Egyptians as an example, employed rotomoulding solutions in the producing of ceramics. The Swiss were also applying this rotation approach to make hollow chocolate eggs. Some plastic product lines in the USA were developed using this procedure some time between 1940 and 1950. The system has however taken long to catch on because it was thought of to be a somewhat slow process

1. Mold preparation.
A fixed amount of polymer in powder form is packed into a hollow mold. The mold is usually crafted from cast aluminium or sheet steel substance. The coloration preferred for the end goods is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic production.

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 mould with the powdered polymer is then secured and positioned into the oven.

2. The heating and fusion process.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done slowly and gradually, about 20 rotations per sixty seconds. One thing that is vital at this moment is the period of time the mold will spend within the oven. If it stays to long, the material will lose value and durability, producing a faulty item. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, which develops bubbles in the finished item.

3. Mold cooling.
When the product 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 generates a cool mist. When the product cools, it reduces somewhat for ease of extraction from the mold. This is yet another procedure that relies a lot on the right timing, since rapid cooling reduces the material too fast, causing bending of the item.

4. The unloading or de-molding step.
As soon as the component within te mold has cooled properly, the molder managing the process can then extract the finished item from the mould. The technique is repeated from the start, providing a number of similar items.

For more information on the different rotational rotomolding options offered for the North Platte NE 69101 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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