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

roto-molding-Independence-Rotational molding pertains to a plastic manufacturing practice that generates hollow stress-free products. The procedure depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have many different designs, sizes and colors. This method is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing processes that no pressure is called for. It also has few rivals when it comes down to the creation of sizable hollow products which are long lasting and inexpensive.There is a variety of products that are developed by this process including large water tanks, automobile materials, complex designed medical items, leisure equipment, toys, canoes, industrialized equipment among many others.This is due to the versatility in regards to design and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Independence MO 64050, 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

Plastic Products-Independence-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 Independence 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 molding technique has been used since ancient times for creatingvseverl product lines. Egyptians for instance, used rotomoulding systems in the of ceramics. The Swiss were also employing this rotation technique to make hollow chocolate eggs. Some plastic items in the USA were developed utilizing this technique some time between 1940 and 1950. The procedure has however taken very long to catch on because it was thought of to be a rather slow process

1. Mold readying.
A fixed volume of polymer in grain form is packed into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The coloration preferred for the end goods 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 style of plastic assembly.

Preheating of the oven follows, 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 locked and installed within the oven.

2. The heating and fusion procedure.
Once inside the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The rotation is done slowly, about 20 spins per min. One thing that is important at this moment is the period of time the mold will spend within the oven. If it overstays, the material will lose stability and strength, generating a faulty item. If it is removed from the oven prematurely, the polymer will not have melted correctly, which develops bubbles in the finished product line.

3. Mold cooling down.
When the product has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it reduces somewhat for ease of extraction from the mould. This is an additional measure that depends upon a lot on the correct timing, since quick cooling shrinks the material too fast, causing bending of the product.

4. The offloading or de-moulding step.
As soon as the component inside te mould has cooled successfully, the molder managing the operation can then extract the finalized 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 Independence MO 64050 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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