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

rotomoulding-Corvallis-Rotational moulding refers to a plastic manufacturing procedure that generates hollow stress-free product lines. The process depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have several forms, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this different from other plastic manufacturing procedures because no pressure is needed. It also has few contenders when it pertains to the creation of large hollow products which are resilient and inexpensive.There is a wide variety of products that are developed by this process including large water tanks, automobile items, complex molded medical items, leisure equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in terms of type and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Corvallis MT 59828, 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

Plastic Products-Corvallis-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 Corvallis 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 Rotomolding Process in Detail

This molding operation has been used since early times for creatingvseverl items. Egyptians for example, utilized rotational molding procedures in the producing of ceramics. The Swiss were also applying this rotation design to generate hollow chocolate eggs. Some plastic product lines in the USA were created using this procedure some time between 1940 and 1950. Because it was regarded to be a relatively slow-moving technique, the approach has however taken long to become popular

1. Mould preparation.
A predetermined volume of polymer in particle form is loaded into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel component. The coloring desired for the end 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 manufacturing.

Pre-heating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then secured and inserted into the oven.

2. The heat and fusion phase.
Once within the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The turning is done slowly and gradually, about 20 rotations per sixty seconds. Something that is important at this point is the period of time the mold will spend within the oven. If it stays to long, the component will lose value and durability, generating a weak product. If it is extracted from the oven too early, the polymer will not have melted correctly, which generates bubbles in the finalized item.

3. Mold cooling down.
When the component has sufficiently spent the correct amount of time in the oven, it is then extracted 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 slightly for ease of extraction from the mold. This is yet another step that depends a lot on the correct timing, since rapid cooling decreases the material too quick, causing bending of the material.

4. The unloading or de-molding step.
As soon as the product inside te mould has cooled effectively, the molder managing the process can then remove the finished item from the mold. The function is repeated from the beginning, supplying a number of similar items.

For more information on the different rotational rotomolding options offered for the Corvallis MT 59828 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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