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

rotational moulding-Kearney-Rotational molding pertains to a plastic manufacturing procedure that generates hollow stress-free products. The function utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a variety of shapes, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The feature that makes this unique from other plastic manufacturing procedures because no pressure is called for. It also has few competitors when it comes down to the creation of large hollow items which are long lasting and inexpensive.There is a wide variety of product lines that are produced by this process including large water tanks, automobile items, complex shaped medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in terms of style and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Kearney MO 64060, 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 rotocasting 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-Kearney-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 Missouri 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 Kearney Missouri 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 Procedure Components

This moulding procedure has been used since early times for creatingvseverl product lines. Egyptians as an example, used roto-molding methods in the manufacturing of ceramics. The Swiss were also utilizing this rotation method to generate hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this procedure some time between 1940 and 1950. Given that it was thought of to be a relatively slow-moving process, the procedure has however taken long to become popular

1. Mould fitting.
A predetermined measure of polymer in grain form is loaded into a hollow mould. The mould is usually comprised of cast aluminium or sheet steel material. The colour wanted for the end product 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 manufacturing.

Preheating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then sealed and put within the oven.

2. The heating up and fusion step.
Once within the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The spinning is done slowly and gradually, about 20 spins per sixty seconds. Something that is essential 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, generating a faulty product. If it is taken out from the oven too early, the polymer will not have flowed properly, which develops bubbles in the finished product line.

3. Mould cooling.
When the product has completely spent the enough 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 a cool mist. When the component cools, it shrinks a little for ease of extraction from the mold. This is an additional step that relies a lot on the ideal timing, since rapid cooling decreases the material too fast, causing bending of the material.

4. The offloading or de-molding step.
As soon as the product inside te mould has cooled adequately, the molder managing the procedure can then extract the completed item from the mold. The procedure is repeated from the beginning, giving a number of similar products.

For more information on the different rotational molding options offered for the Kearney MO 64060 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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