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

rotational moulding-Hemingford-Rotational molding refers to a plastic manufacturing technique that creates hollow stress-free products. The method utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have many different designs, sizes and colors. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing methods that no pressure is involved. It also has few contenders when it comes to the production of large size hollow items which are durable and inexpensive.There is a variety of products that are produced by this process including large water tanks, automobile products, complex shaped medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in regards to 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 Hemingford NE 69348, 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 Manufacturing-Hemingford-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 Hemingford 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 Process in Detail

This molding technique has been used since early times for creatingvseverl items. Egyptians for instance, worked with rotomoulding solutions in the producing of ceramics. The Swiss were also utilizing this rotation approach to generate hollow chocolate eggs. Some plastic products in the USA were developed using this procedure some time between 1940 and 1950. The system has however taken long to take affect because it was looked at as being a rather slow process

1. Mold readying.
A fixed measure 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 tone intended 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 type of plastic manufacturing.

Preheating of the oven follows, 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 put inside the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is spun on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The rotation is done gradually, about 20 rotations per min. The main thing that is essential at this moment is the period of time the mold will spend inside the oven. If it overstays, the component will lose stability and durability, making a poor item. If it is taken out from the oven too early, the polymer will not have flowed correctly, which generates bubbles in the finished product line.

3. Mould cooling.
When the component has sufficiently spent the enough 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 shrinks slightly for ease of removal from the mould. This is an additional step that relies a lot on the right timing, since rapid cooling reduces the material too fast, causing bending of the product.

4. The removing or de-moulding step.
As soon as the product within te mould has cooled successfully, the molder handling the procedure can then take out the finished product from the mould. The function is repeated from the beginning, supplying a number of exact items.

For more information on the different rotational rotomolding options offered for the Hemingford NE 69348 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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