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

rotational molding-West Covina-Rotational moulding refers to a plastic production practice that creates hollow stress-free products. The method relies upon high temperatures and bi axial rotation to come up with seamless, one piece products that have varying forms, colors and sizes. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this unique from other plastic manufacturing methods because no pressure is involved. It also has few contenders when it involves the manufacture of large size hollow products which are long-lasting and inexpensive.There is a wide variety of items that are generated by this process including large water tanks, automobile materials, complex molded medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is because of the flexibility in regards to type 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 West Covina CA 91790, 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 Molded-West Covina-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 California 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 West Covina California 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 moulding operation has been used since earlier times for creatingvseverl items. Egyptians for example, employed rotomoulding techniques in the of ceramics. The Swiss were also using this rotation method to make hollow chocolate eggs. Some plastic items in the USA were made using this technique some time between 1940 and 1950. Given that it was viewed to be a very slow-moving system, the procedure has however taken long to catch on

1. Mould preparation.
A predetermined amount of polymer in grain form is packed into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel material. The color chosen for the final goods is pre compounded into the polymer. The most commonly 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 sealed and placed within the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The turning is done gradually, about 20 spins per sixty seconds. Something that is vital at this point is the amount of time the mold will spend within the oven. If it overstays, the material will lose stability and strength, making a poor item. If it is removed from the oven too early, the polymer will not have melted correctly, which develops bubbles in the completed product.

3. Mold cooling.
When the material has completely spent the enough 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 shrinks slightly for ease of removal from the mold. This is another step that depends upon a lot on the ideal timing, since quick cooling decreases the material too quick, causing bending of the item.

4. The offloading or de-molding phase.
As soon as the component inside te mould has cooled effectively, the molder managing the process can then extract the completed product from the mold. The function is repeated from the beginning, providing a number of exact products.

For more information on the different rotational rotomolding options offered for the West Covina CA 91790 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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