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

rotomolding-Elma-Rotational molding pertains to a plastic production practice that creates hollow stress-free product lines. The method utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have various forms, sizes and colors. This method is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The component that makes this different from other plastic manufacturing methods that no pressure is required. It also has few contenders when it comes down to the manufacture of large size hollow items which are resilient and inexpensive.There is a wide variety of items that are created by this process including big water tanks, automobile products, intricate 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 creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Elma WA 98541, 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 rotomolding 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-Elma-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 Elma 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 Method Components

This moulding procedure has been used since ancient times for creatingvseverl items. Egyptians as an example, applied rotocasting solutions in the of ceramics. The Swiss were also using this rotation method to create hollow chocolate eggs. Some plastic product lines in the USA were created using this technique some time between 1940 and 1950. The procedure has however taken very long to catch on because it was considered to be a moderately slow-moving process

1. Mould fitting.
A fixed quantity of polymer in grain form is loaded into a hollow mold. The mould is usually made of cast aluminium or sheet steel material. The color tone needed for the final item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic production.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mold with the powdered polymer is then sealed and put within the oven.

2. The heating and fusion process.
Once within the oven, the mold is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The rotation is done slowly and gradually, about 20 spins per sixty seconds. One thing that is vital at this moment is the period of time the mold will spend within the oven. If it overstays, the material will lose stability and durability, producing a weak item. If it is taken out from the oven prematurely, the polymer will not have liquefied correctly, which generates bubbles in the finished product.

3. Mold cooling down.
When the material has sufficiently 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 material cools, it reduces somewhat for ease of extraction from the mold. This is an additional measure that depends a lot on the ideal timing, since rapid cooling shrinks the material too quick, causing warping of the material.

4. The offloading or de-moulding phase.
When the material within te mold has cooled properly, the person taking care of the procedure can then extract the finished product from the mold. The procedure is repeated from the start, making a number of identical items.

For more information on the different rotational rotomolding options offered for the Elma WA 98541 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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