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

rotomolding-Crystal City-Rotational moulding pertains to a plastic manufacturing practice that creates hollow stress-free items. The process utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have varying designs, colors and sizes. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing methods in that no pressure is needed. It also has few contenders when it pertains to the creation of sizable hollow items 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, sophisticated designed medical items, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the flexibility in terms of style 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 Crystal City MO 63019, 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 rotomoulding 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-Crystal City-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 Crystal City 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 Rotomoulding Method Components

This moulding procedure has been used since ancient times for creatingvseverl items. Egyptians for example, utilized rotocasting solutions in the creating of ceramics. The Swiss were also using this rotation type to generate hollow chocolate eggs. Some plastic products in the USA were developed using this technique some time between 1940 and 1950. The procedure has however taken long to catch on because it was looked at as being a very slow-moving process

1. Mould preparation.
A predetermined amount of polymer in powder form is packed into a hollow mould. The mould is usually made of cast aluminium or sheet steel substance. The coloration preferred for the finished 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 style of plastic assembly.

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

2. The heat and fusion step.
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 turning is done slowly and gradually, about 20 rotations per minute. Something that is vital at this moment is the amount of time the mold will spend inside the oven. If it overstays, the material will lose value and durability, generating a faulty product. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which generates bubbles in the finalized product.

3. Mold cooling.
When the product has completely spent the correct amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it shrinks slightly for ease of extraction from the mould. This is yet another measure that depends a lot on the right timing, since rapid cooling shrinks the material too quickly, causing bending of the item.

4. The un-loading or de-moulding step.
As soon as the product inside te mould has cooled successfully, the person managing the process can then remove the finished product from the mould. The procedure is repeated from the start, providing a number of exact product lines.

For more information on the different rotational molding options offered for the Crystal City MO 63019 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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