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

rotocasting-Coulee Dam-Rotational molding pertains to a plastic manufacturing practice that creates hollow stress-free items. The process depends on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a variety of forms, colors and sizes. This procedure is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this different from other plastic manufacturing methods because no pressure is required. It also has few competitors when it pertains to the manufacture of large size hollow items which are long-lasting and inexpensive.There is a variety of product lines that are generated by this process including big water tanks, automobile items, intricate shaped medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility in terms of style and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Coulee Dam WA 99116, 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 roto-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

Custom Molded-Coulee Dam-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 Coulee Dam 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 Rotomolding Process in Detail

This molding operation has been used since early times for creatingvseverl items. Egyptians for example, employed roto-molding solutions in the producing of ceramics. The Swiss were also employing this rotation approach to generate hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this technique some time between 1940 and 1950. Given that it was regarded to be a fairly slow-moving system, the procedure has however taken long to become popular

1. Mould fitting.
A fixed measure of polymer in grain form is loaded into a hollow mould. The mold is usually built from cast aluminium or sheet steel substance. The color wanted for the final goods is pre compounded into the polymer. The most often 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 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 sealed and put inside the oven.

2. The heating up and fusion phase.
Once inside the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The rotation is done gradually, about 20 rotations per minute. Something that is crucial at this point is the period of time the mold will spend within the oven. If it stays to long, the product will lose stability and durability, creating a faulty item. If it is removed from the oven prematurely, the polymer will not have flowed properly, which creates bubbles in the completed product.

3. Mold cooling.
When the material has completely spent the enough of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it shrinks somewhat for ease of extraction from the mould. This is another step that depends upon a lot on the right timing, since quick cooling decreases the material too quick, causing warping of the item.

4. The unloading or de-moulding step.
When the component within te mould has cooled correctly, the molder handling the operation can then take out the finalized item from the mould. The technique is repeated from the beginning, making a number of exact items.

For more information on the different rotational rotomolding options offered for the Coulee Dam WA 99116 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic products

Local Resources

Production Example
Google Map