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

rotational moulding-Elk Point-Rotational moulding refers to a plastic manufacturing solution that produces hollow stress-free product lines. The process utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have various designs, sizes and colors. This method is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The feature that makes this unique from other plastic manufacturing processes in that no pressure is required. It also has few competitors when it comes down to the manufacture of large size hollow products which are durable and inexpensive.There is a variety of products that are created by this process including large water tanks, automobile items, complex molded medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in regards to design and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Elk Point SD 57025, 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 rotomoulding 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-Elk Point-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 Elk Point 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 moulding procedure has been used since early times for creatingvseverl items. Egyptians for instance, used rotational molding techniques in the creating of ceramics. The Swiss were also using this rotation technique to make hollow chocolate eggs. Some plastic product lines in the USA were created using this method some time between 1940 and 1950. The procedure has however taken long to take affect because it was considered to be a pretty slow process

1. Mould prep work.
A predetermined measure of polymer in grain form is filled into a hollow mould. The mould is usually built from cast aluminium or sheet steel substance. The coloration intended for the end item 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 design of plastic production.

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 heating up and fusion step.
Once within the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done gradually, about 20 revolutions per sixty seconds. One thing that is vital at this moment is the amount of time the mold will spend inside the oven. If it overstays, the material will lose value and strength, creating a weak product. If it is removed from the oven prematurely, the polymer will not have liquefied properly, which develops bubbles in the completed product.

3. Mold cooling down.
When the material has completely spent the right amount of time in the oven, it is then removed for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the product cools, it reduces somewhat for ease of removal from the mould. This is another procedure that depends upon a lot on the right timing, since rapid cooling decreases the material too fast, causing bending of the material.

4. The unloading or de-moulding step.
Once the material inside te mold has cooled properly, the person managing the procedure can then take out the finalized item from the mould. The technique is repeated from the start, supplying a number of identical products.

For more information on the different rotational rotomolding options offered for the Elk Point SD 57025 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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