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

rotational moulding-Trimble-Rotational moulding refers to a plastic manufacturing technique that produces hollow stress-free products. The method depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying designs, sizes and colors. This technique is also called rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing techniques in that no pressure is required. It also has few rivals when it comes down to the manufacture of sizable hollow items which are long lasting and inexpensive.There is a wide variety of items that are created by this process including large water tanks, automobile products, complex designed medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in regards to design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Trimble MO 64492, 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

Custom Molding-Trimble-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 Trimble 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 technique has been used since ancient times for creatingvseverl items. Egyptians for example, utilized roto-molding methods in the of ceramics. The Swiss were also using this rotation technique to make hollow chocolate eggs. Some plastic items in the USA were developed utilizing this method some time between 1940 and 1950. The procedure has however taken long to catch on because it was considered to be a moderately slow-moving process

1. Mold fitting.
A fixed volume of polymer in particle form is filled into a hollow mould. The mold is usually built from cast aluminium or sheet steel component. The color tone desired for the finished product is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic assembly.

Preheating of the oven starts, and it may 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 installed into the oven.

2. The heating up and fusion process.
Once within the oven, the mold is spun on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The turning is done gradually, about 20 rotations per min. Something that is vital at this moment is the period of time the mold will spend within the oven. If it overstays, the component will lose value and strength, creating a poor product. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, 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 removed for cooling. This may be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it reduces somewhat for ease of extraction from the mold. This is one more procedure that depends upon a lot on the ideal timing, since quick cooling shrinks the material too quick, causing warping of the material.

4. The un-loading or de-moulding phase.
As soon as the component within te mould has cooled effectively, the person handling the operation can then extract the completed product from the mould. The technique is repeated from the beginning, making a number of exact product lines.

For more information on the different rotational molding options offered for the Trimble MO 64492 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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