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

rotational moulding-Cape Girardeau-Rotational moulding refers to a plastic manufacturing procedure that produces hollow stress-free products. The procedure uses high temperatures and bi axial rotation to come up with seamless, one piece items that have various shapes, colors and sizes. This procedure is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The component that makes this different from other plastic manufacturing procedures that no pressure is called for. It also has few rivals when it pertains to the production of large hollow products which are long-lasting and inexpensive.There is a variety of items that are created by this process including large water tanks, automobile materials, sophisticated molded medical products, leisure equipment, toys, canoes, industrialized equipment among many others.This is because of the flexibility in terms of design and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Cape Girardeau MO 63701, 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

Plastic Products-Cape Girardeau-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 Cape Girardeau 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 Procedure in Detail

This molding method has been used since earlier times for creatingvseverl products. Egyptians for example, applied rotational molding procedures in the of ceramics. The Swiss were also working with this rotation format to generate hollow chocolate eggs. Some plastic product lines in the USA were made using this technique some time between 1940 and 1950. Due to the fact that it was looked at to be a rather slow approach, the technique has however taken long to catch on

1. Mold prep work.
A fixed measure of polymer in powder form is loaded into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel material. The coloration preferred for the end item 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 engineering.

Pre-heating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then secured and placed inside the oven.

2. The heat and fusion process.
Once within the oven, the mold is turned 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 rotations per minute. Something that is vital at this moment is the period of time the mould will spend inside the oven. If it stays to long, the product will lose stability and strength, making a weak item. If it is removed from the oven too early, the polymer will not have flowed properly, which develops bubbles in the finalized product.

3. Mould cooling.
When the component has completely spent the right amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it shrinks slightly for ease of extraction from the mould. This is one more procedure that depends a lot on the right timing, since rapid cooling reduces the material too quick, causing bending of the material.

4. The removing or de-molding step.
Once the product within te mold has cooled correctly, the molder taking care of the process can then extract the finished item from the mould. The process is repeated from the beginning, supplying a series of similar products.

For more information on the different rotational molding options offered for the Cape Girardeau MO 63701 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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