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

rotomoulding-Green Ridge-Rotational molding refers to a plastic production practice that creates hollow stress-free items. The function relies on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have different designs, sizes and colors. This method is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this different from other plastic manufacturing techniques in that no pressure is required. It also has few contenders when it comes down to the production of large hollow items which are resilient and inexpensive.There is a variety of product lines that are created by this process including large size water tanks, automobile items, complex designed medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in terms of design and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Green Ridge MO 65332, 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 Molding-Green Ridge-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 Green Ridge 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 Rotomolding Process in Detail

This molding process has been used since early times for creatingvseverl items. Egyptians for example, utilized rotational molding methods in the producing of ceramics. The Swiss were also utilizing this rotation format to create hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this approach some time between 1940 and 1950. The procedure has however taken long to take affect because it was considered as being a moderately slow process

1. Mould fitting.
A fixed volume of polymer in grain form is filled into a hollow mold. The mould is usually made from cast aluminium or sheet steel component. The coloration preferred for the finished 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 design of plastic assembly.

Pre-heating of the oven starts, and it may 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 secured and installed into the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done slowly, about 20 spins per min. One thing that is vital at this moment is the amount of time the mould will spend inside the oven. If it overstays, the component will lose value and durability, generating a faulty product. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, which develops bubbles in the finished product.

3. Mold cooling.
When the product has sufficiently spent the correct amount 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 material cools, it shrinks slightly for ease of removal from the mold. This is one more step that relies a lot on the correct timing, since quick cooling decreases the material too fast, causing warping of the material.

4. The unloading or de-moulding step.
Once the material inside te mold has cooled correctly, the person handling the procedure can then take out the finished item from the mold. The process is repeated from the beginning, providing a series of similar products.

For more information on the different rotational molding options offered for the Green Ridge MO 65332 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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