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

roto-molding-Union-Rotational moulding pertains to a plastic production technique that produces hollow stress-free product lines. The procedure relies on high temperatures and bi axial rotation to follow up with seamless, one piece products that have many different 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 function that makes this different from other plastic manufacturing processes in that no pressure is required. It also has few competitors when it involves the production of large size hollow items which are long lasting and inexpensive.There is a wide variety of product lines that are developed by this process including big water tanks, automobile materials, intricate designed medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in terms of design and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Union WA 98592, 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

Custom Molding-Union-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 Union 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 in Detail

This molding system has been used since ancient times for creatingvseverl items. Egyptians for example, employed roto-molding methods in the making of ceramics. The Swiss were also employing this rotation approach to create hollow chocolate eggs. Some plastic product lines in the USA were made using this approach some time between 1940 and 1950. Given that it was regarded to be a relatively slow procedure, the approach has however taken long to become popular

1. Mold fitting.
A fixed measure of polymer in particle form is filled into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel substance. The coloration intended for the end goods 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 style of plastic engineering.

Preheating of the oven follows, and it may 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 sealed and inserted inside the oven.

2. The heat and fusion process.
Once within the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The turning is done gradually, about 20 spins per minute. The main thing that is critical at this moment is the amount of time the mould will spend within the oven. If it stays to long, the component will lose value and durability, producing a poor product. If it is taken out from the oven too early, the polymer will not have liquefied properly, which develops bubbles in the finished product.

3. Mould cooling.
When the component has sufficiently spent the correct amount of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it shrinks somewhat for ease of extraction from the mold. This is yet another step that relies a lot on the right timing, since quick cooling decreases the material too quick, causing bending of the product.

4. The offloading or de-moulding phase.
As soon as the component within te mould has cooled successfully, the molder handling the procedure can then extract the finished product from the mould. The function is repeated from the start, giving a number of identical products.

For more information on the different rotational rotomolding options offered for the Union WA 98592 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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