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

rotational molding-Hoven-Rotational moulding refers to a plastic production procedure that makes hollow stress-free items. The process utilizes high temperatures and bi axial rotation to come up with seamless, one piece items that have many different designs, colors and sizes. This technique is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing procedures that no pressure is called for. It also has few rivals when it comes down to the production of sizable 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 products, sophisticated shaped medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in regards to design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Hoven SD 57450, 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 rotomolding 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 Manufacturing-Hoven-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 Hoven 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 Rotomoulding Process Components

This molding operation has been used since ancient times for creatingvseverl product lines. Egyptians as an example, used rotocasting procedures in the making of ceramics. The Swiss were also applying this rotation technique to create hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this technique some time between 1940 and 1950. The process has however taken very long to catch on because it was thought of to be a relatively slow process

1. Mould readying.
A predetermined quantity of polymer in grain form is filled into a hollow mold. The mold is usually built from cast aluminium or sheet steel substance. The coloring preferred for the end item 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 design of plastic manufacturing.

Pre-heating of the oven starts, 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 sealed and positioned into the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The turning is done gradually, about 20 rotations per sixty seconds. The main thing that is important at this moment is the amount of time the mold will spend inside the oven. If it stays to long, the material will lose value and strength, making a poor product. If it is taken out from the oven too early, the polymer will not have melted properly, which creates bubbles in the finished product line.

3. Mould cooling down.
When the component has completely spent the enough of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it reduces somewhat for ease of extraction from the mould. This is an additional procedure that depends a lot on the ideal timing, since quick cooling reduces the material too quickly, causing warping of the product.

4. The offloading or de-molding step.
Once the component inside te mold has cooled adequately, the molder managing the operation can then extract the finalized item from the mould. The process is repeated from the start, making a number of identical products.

For more information on the different rotational rotomolding options offered for the Hoven SD 57450 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic molding

Local Resources

Production Example
Google Map