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

rotational moulding-Parmelee-Rotational molding pertains to a plastic manufacturing procedure that produces hollow stress-free items. The function depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have different shapes, sizes and colors. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The benefit that makes this different from other plastic manufacturing processes in that no pressure is needed. It also has few competitors when it pertains to the creation of large hollow items which are long lasting and inexpensive.There is a wide variety of items that are generated by this process including big water tanks, automobile materials, complex molded medical items, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in regards to type 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 Parmelee SD 57566, 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 roto-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 Molded-Parmelee-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 South Dakota 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 Parmelee South Dakota 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 Process in Detail

This molding method has been used since ancient times for creatingvseverl products. Egyptians as an example, worked with rotomoulding methods in the manufacturing of ceramics. The Swiss were also utilizing this rotation approach to make hollow chocolate eggs. Some plastic items in the USA were developed utilizing this method some time between 1940 and 1950. Considering that it was regarded to be a fairly slow technique, the procedure has however taken long to catch on

1. Mould fitting.
A predetermined volume of polymer in grain form is filled into a hollow mould. The mould is usually made of cast aluminium or sheet steel material. The color wanted for the end product is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Preheating of the oven follows, and it can 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 sealed and placed inside the oven.

2. The heat and fusion phase.
Once placed into 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 gradually, about 20 rotations per sixty seconds. One thing that is critical 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 strength, creating a poor item. If it is extracted from the oven too early, the polymer will not have liquefied properly, which creates bubbles in the finished item.

3. Mold cooling down.
When the product has completely 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 a cool mist. When the component cools, it shrinks slightly for ease of extraction from the mould. This is one more measure that relies a lot on the ideal timing, since rapid cooling reduces the material too fast, causing bending of the material.

4. The discharging or de-molding phase.
Once the material inside te mold has cooled correctly, the person managing the procedure can then extract the completed item from the mould. The function is repeated from the start, providing a number of similar products.

For more information on the different rotational rotomolding options offered for the Parmelee SD 57566 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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