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

rotomolding-Marshall-Rotational moulding refers to a plastic production method that generates hollow stress-free products. The procedure relies on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various forms, colors and sizes. This technique is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The feature that makes this unique from other plastic manufacturing procedures because no pressure is needed. It also has few rivals when it comes to the creation of large hollow items which are durable and inexpensive.There is a variety of items that are developed by this process including large water tanks, automobile products, complex molded medical items, recreation equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in regards to design 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 Marshall MO 65340, 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

Plastic Molding-Marshall-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 Marshall 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 system has been used since early times for creatingvseverl items. Egyptians for instance, employed rotomoulding solutions in the creating of ceramics. The Swiss were also employing this rotation format to generate hollow chocolate eggs. Some plastic items in the USA were created utilizing this approach some time between 1940 and 1950. The technique has however taken long to catch on because it was thought of as being a relatively slow process

1. Mould prep work.
A predetermined amount of polymer in powder form is packed into a hollow mould. The mould is usually comprised of cast aluminium or sheet steel material. The coloration wanted 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 engineering.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated up 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 mould is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The spinning is done gradually, about 20 rotations per minute. The main thing that is important at this point is the period of time the mould will spend within the oven. If it stays to long, the product will lose value and strength, producing a weak item. If it is taken out from the oven too early, the polymer will not have liquefied properly, which creates bubbles in the completed product line.

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 may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it reduces a little for ease of removal from the mold. This is another procedure that depends a lot on the right timing, since quick cooling decreases the material too quickly, causing bending of the product.

4. The un-loading or de-moulding step.
As soon as the component inside te mold has cooled correctly, the person taking care of the process can then take out the finalized product from the mold. The function is repeated from the beginning, giving a number of similar product lines.

For more information on the different rotational molding options offered for the Marshall MO 65340 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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