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

rotational moulding-Altenburg-Rotational molding refers to a plastic production practice that produces hollow stress-free product lines. The method relies upon high temperatures and bi axial rotation to follow up with seamless, one piece items that have several shapes, colors and sizes. This method is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The function that makes this unique from other plastic manufacturing procedures because no pressure is called for. It also has few contenders when it comes to the creation of large hollow products which are long lasting and inexpensive.There is a wide variety of items that are created by this process including large size water tanks, automobile products, intricate molded medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in regards to type 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 Altenburg MO 63732, 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-Altenburg-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 Altenburg 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 Rotomolding Process Components

This moulding procedure has been used since earlier times for creatingvseverl product lines. Egyptians as an example, applied rotational molding solutions in the creating of ceramics. The Swiss were also making use of this rotation method to make hollow chocolate eggs. Some plastic products in the USA were developed using this procedure some time between 1940 and 1950. The process has however taken long to catch on because it was thought of as being a somewhat slow process

1. Mould prep work.
A predetermined volume of polymer in particle form is filled into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel component. The color tone needed for the final 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 production.

Pre-heating 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 mold with the powdered polymer is then secured and inserted inside the oven.

2. The heating and fusion procedure.
Once within the oven, the mold is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The spinning is done slowly, about 20 rotations per min. One thing that is crucial at this moment is the amount of time the mold will spend inside the oven. If it stays to long, the component will lose value and durability, creating a faulty product. If it is removed from the oven too early, the polymer will not have flowed correctly, which develops bubbles in the completed product.

3. Mold cooling down.
When the component has completely spent the enough 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 somewhat for ease of extraction from the mould. This is another step that relies a lot on the ideal timing, since rapid cooling reduces the material too rapidly, causing warping of the item.

4. The unloading or de-molding phase.
As soon as the component inside te mould has cooled adequately, the molder taking care of the operation can then take out the finished item from the mould. The procedure is repeated from the beginning, providing a series of identical items.

For more information on the different rotational molding options offered for the Altenburg MO 63732 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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