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

rotational moulding-Hartington-Rotational molding refers to a plastic manufacturing technique that makes hollow stress-free items. The function relies upon high temperatures and bi axial rotation to follow up with seamless, one piece products that have many different shapes, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this different from other plastic manufacturing processes because no pressure is required. It also has few contenders when it involves the creation of sizable hollow products which are durable and inexpensive.There is a wide variety of products that are produced by this process including large size water tanks, automobile items, sophisticated designed medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of design 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 Hartington NE 68739, 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-Hartington-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 Hartington 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 Method Components

This moulding procedure has been used since earlier times for creatingvseverl items. Egyptians as an example, worked with rotocasting solutions in the of ceramics. The Swiss were also making use of this rotation format to generate hollow chocolate eggs. Some plastic items in the USA were manufactured using this approach some time between 1940 and 1950. Due to the fact that it was considered to be a somewhat slow technique, the system has however taken long to become popular

1. Mold fitting.
A fixed quantity of polymer in powder form is filled into a hollow mould. The mold is usually made from cast aluminium or sheet steel material. The color intended for the final 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.

Pre-heating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then sealed and installed 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 liquefies from the heat and layers the inside if the mould. The rotation is done slowly and gradually, about 20 revolutions per min. One thing that is essential at this point is the amount of time the mould will spend within the oven. If it stays to long, the component will lose stability and durability, generating a poor item. If it is extracted from the oven too early, the polymer will not have flowed properly, which produces bubbles in the finalized product.

3. Mould cooling down.
When the material has sufficiently 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 creates a cool mist. When the product cools, it reduces a little for ease of extraction from the mould. This is yet another measure that relies a lot on the ideal timing, since quick cooling reduces the material too quickly, causing warping of the item.

4. The removing or de-molding phase.
When the material inside te mould has cooled successfully, the molder managing the procedure can then remove the finalized product from the mould. The function is repeated from the beginning, providing a number of exact product lines.

For more information on the different rotational rotomolding options offered for the Hartington NE 68739 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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