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

rotational moulding-Box Elder-Rotational molding pertains to a plastic manufacturing practice that generates hollow stress-free product lines. The method uses high temperatures and bi axial rotation to follow up with seamless, one piece items that have different shapes, colors and sizes. This technique is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this different from other plastic manufacturing processes that no pressure is needed. It also has few contenders when it comes to the production of large hollow products which are durable and inexpensive.There is a variety of product lines that are produced by this process including large size water tanks, automobile items, sophisticated designed medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in regards to type and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Box Elder MT 59521, 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

Custom Molding-Box Elder-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 Montana 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 Box Elder Montana 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 technique has been used since earlier times for creatingvseverl items. Egyptians as an example, applied roto-molding methods in the of ceramics. The Swiss were also applying this rotation format to make hollow chocolate eggs. Some plastic products in the USA were created utilizing this approach some time between 1940 and 1950. The procedure has however taken very long to take affect because it was looked at as being a rather slow-moving process

1. Mold fitting.
A predetermined measure of polymer in particle form is packed into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The coloration needed for the final product 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 design of plastic engineering.

Pre-heating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then sealed and installed inside the oven.

2. The heating up and fusion process.
Once inside the oven, the mould is spun on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The spinning is done gradually, about 20 revolutions per sixty seconds. One thing that is essential at this moment is the period of time the mold will spend within the oven. If it stays to long, the material will lose value and strength, making a weak item. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which develops bubbles in the finalized product line.

3. Mould cooling.
When the material has sufficiently spent the correct amount 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 generates a cool mist. When the product cools, it reduces somewhat for ease of removal from the mould. This is one more measure that relies a lot on the correct timing, since rapid cooling reduces the material too fast, causing bending of the item.

4. The unloading or de-molding step.
When the product within te mold has cooled successfully, the molder taking care of the operation can then take out the finalized item from the mold. The technique is repeated from the beginning, supplying a number of identical products.

For more information on the different rotational rotomolding options offered for the Box Elder MT 59521 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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