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

rotomolding-Chester-Rotational molding refers to a plastic production solution that generates hollow stress-free products. The process utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying forms, colors and sizes. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The function that makes this unique from other plastic manufacturing processes because no pressure is needed. It also has few contenders when it comes down to the production of large size hollow products which are durable and inexpensive.There is a wide variety of items that are created by this process including large size water tanks, automobile materials, intricate shaped medical products, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in terms of design 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 Chester SD 57016, 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 moulding 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-Chester-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 South Dakota 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 Chester South Dakota 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 moulding method has been used since early times for creatingvseverl products. Egyptians for example, applied rotomoulding methods in the of ceramics. The Swiss were also making use of this rotation method to generate hollow chocolate eggs. Some plastic product lines in the USA were developed using this approach some time between 1940 and 1950. Considering that it was looked at to be a fairly slow-moving technique, the approach has however taken long to become popular

1. Mould readying.
A fixed volume of polymer in grain form is loaded into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel material. The coloration needed for the final product 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 follows, 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 placed inside the oven.

2. The heating up and fusion process.
Once within the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The turning is done gradually, about 20 spins per min. The main thing that is critical at this moment is the period of time the mold will spend within the oven. If it stays to long, the product will lose stability and strength, making a poor item. If it is extracted from the oven prematurely, the polymer will not have flowed properly, which produces bubbles in the finished product line.

3. Mould cooling.
When the product has completely spent the right amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the material cools, it shrinks a little for ease of removal from the mold. This is one more procedure that relies a lot on the right timing, since quick cooling reduces the material too quickly, causing bending of the product.

4. The un-loading or de-molding step.
When the component within te mould has cooled correctly, the person handling the operation can then take out the completed item from the mold. The procedure is repeated from the beginning, making a number of identical items.

For more information on the different rotational rotomolding options offered for the Chester SD 57016 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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