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

roto-molding-Ashland-Rotational moulding pertains to a plastic production practice that makes hollow stress-free items. The process relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have various designs, colors and sizes. This technique is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this unique from other plastic manufacturing methods because no pressure is required. It also has few competitors when it involves the creation of large size hollow items which are long-lasting and inexpensive.There is a variety of items that are created by this process including large size water tanks, automobile materials, sophisticated molded medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in terms of style and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Ashland MT 59003, 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-Ashland-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 Ashland 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 process has been used since ancient times for creatingvseverl product lines. Egyptians for instance, worked with rotocasting solutions in the manufacturing of ceramics. The Swiss were also utilizing this rotation approach to generate hollow chocolate eggs. Some plastic items in the USA were developed using this approach some time between 1940 and 1950. The technique has however taken long to take affect because it was looked at to be a very slow-moving process

1. Mould readying.
A predetermined volume of polymer in particle form is loaded into a hollow mold. The mold is usually made from cast aluminium or sheet steel substance. The colour needed for the finished 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 type of plastic manufacturing.

Preheating 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 mold with the powdered polymer is then locked and positioned within the oven.

2. The heating and fusion step.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The spinning is done slowly and gradually, about 20 rotations per min. The main thing that is essential at this moment is the period of time the mould will spend within the oven. If it overstays, the component will lose value and durability, creating a poor product. If it is extracted from the oven too early, the polymer will not have melted correctly, which creates bubbles in the completed product line.

3. Mold cooling down.
When the material has sufficiently spent the right amount 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 product cools, it reduces somewhat for ease of removal from the mold. This is an additional step that depends a lot on the ideal timing, since quick cooling reduces the material too rapidly, causing warping of the material.

4. The offloading or de-molding phase.
When the product inside te mould has cooled adequately, the molder managing the procedure can then extract the completed item from the mould. The technique is repeated from the start, providing a series of exact products.

For more information on the different rotational rotomolding options offered for the Ashland MT 59003 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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