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

rotocasting-Sterling-Rotational moulding pertains to a plastic production solution that makes hollow stress-free products. The technique depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have a wide range of forms, sizes and colors. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing methods in that no pressure is required. It also has few rivals when it pertains to the production of large hollow products which are long lasting and inexpensive.There is a variety of product lines that are developed by this process including large water tanks, automobile materials, complex designed medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in terms of type and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Sterling NE 68443, 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 rotational 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

Plastic Manufacturing-Sterling-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 Sterling 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 Roto-Molding Method Components

This molding process has been used since ancient times for creatingvseverl items. Egyptians for example, employed roto-molding systems in the making of ceramics. The Swiss were also employing this rotation technique to generate hollow chocolate eggs. Some plastic product lines in the USA were made using this approach some time between 1940 and 1950. Due to the fact that it was regarded to be a somewhat slow method, the system has however taken long to become popular

1. Mould readying.
A predetermined amount of polymer in grain form is loaded into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel substance. The coloration desired for the end goods is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic assembly.

Preheating of the oven follows, and it can 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 sealed and installed into the oven.

2. The heating and fusion phase.
Once placed into the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The spinning is done gradually, about 20 spins per minute. The main thing that is vital at this point is the amount of time the mold will spend within the oven. If it overstays, the material will lose stability and durability, making a weak product. If it is removed from the oven prematurely, the polymer will not have flowed properly, which generates bubbles in the completed product line.

3. Mould cooling down.
When the material has completely spent the right amount of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it reduces a little for ease of removal from the mold. This is an additional measure that relies a lot on the ideal timing, since rapid cooling shrinks the material too fast, causing warping of the product.

4. The removing or de-moulding phase.
As soon as the product inside te mould has cooled correctly, the molder taking care of the process can then extract the finished product from the mould. The technique is repeated from the beginning, supplying a number of similar products.

For more information on the different rotational rotomolding options offered for the Sterling NE 68443 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic manufacturing

Local Resources

Production Example
Google Map