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

rotational moulding-Vancouver-Rotational moulding pertains to a plastic production procedure that generates hollow stress-free items. The procedure uses high temperatures and bi axial rotation to come up with seamless, one piece products that have varying designs, colors and sizes. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The component that makes this different from other plastic manufacturing processes in that no pressure is required. It also has few contenders when it comes to the production of large hollow items which are long-lasting and inexpensive.There is a wide range of products that are produced by this process including large size water tanks, automobile products, complex shaped medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in terms of style 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 Vancouver WA 98660, 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 rotocasting 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-Vancouver-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 Washington 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 Vancouver Washington 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 system has been used since ancient times for creatingvseverl product lines. Egyptians as an example, utilized rotomoulding techniques in the of ceramics. The Swiss were also using this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were developed using this technique some time between 1940 and 1950. The procedure has however taken long to take affect because it was looked at to be a pretty slow-moving process

1. Mold readying.
A predetermined quantity of polymer in powder form is filled into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel substance. The coloring desired for the end 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 design of plastic engineering.

Preheating of the oven starts, and it can 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 secured and positioned within the oven.

2. The heat and fusion phase.
Once within the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 revolutions per min. Something that is critical at this point is the amount of time the mold will spend within the oven. If it stays to long, the product will lose value and strength, making a weak item. If it is removed from the oven too early, the polymer will not have flowed properly, which develops bubbles in the completed product line.

3. Mould cooling.
When the product 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 material cools, it shrinks somewhat for ease of extraction from the mold. This is yet another step that depends upon a lot on the right timing, since rapid cooling decreases the material too fast, causing bending of the product.

4. The un-loading or de-molding phase.
Once the component inside te mould has cooled properly, the molder handling the procedure can then remove the finalized item from the mould. The function is repeated from the beginning, providing a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Vancouver WA 98660 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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