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

rotocasting-Portola-Rotational moulding refers to a plastic manufacturing practice that makes hollow stress-free product lines. The technique depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have a variety of designs, colors and sizes. This technique is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The component that makes this different from other plastic manufacturing procedures that no pressure is required. It also has few contenders when it comes down to the creation of sizable hollow products which are resilient and inexpensive.There is a wide variety of products that are developed by this process including large size water tanks, automobile items, complex molded medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in terms of 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 Portola CA 96122, 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 rotational 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

Plastic Molding-Portola-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 Portola 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 Rotomolding Procedure in Detail

This moulding process has been used since ancient times for creatingvseverl product lines. Egyptians for example, employed roto-molding solutions in the of ceramics. The Swiss were also using this rotation design to make hollow chocolate eggs. Some plastic products in the USA were made using this approach some time between 1940 and 1950. The technique has however taken very long to take affect because it was thought of to be a very slow-moving process

1. Mould readying.
A fixed amount of polymer in grain form is packed into a hollow mould. The mould is usually crafted from cast aluminium or sheet steel component. The color preferred for the finished 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 format of plastic production.

Preheating of the oven follows, and it can 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 inserted within the oven.

2. The heat and fusion procedure.
Once within the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The rotation is done gradually, about 20 revolutions per minute. One thing that is important at this point is the period of time the mould will spend within the oven. If it overstays, the product will lose value and strength, generating a poor product. If it is removed from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the finished product line.

3. Mould cooling.
When the product has completely spent the right 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 creates a cool mist. When the component cools, it shrinks slightly for ease of removal from the mould. This is an additional measure that relies a lot on the right timing, since rapid cooling reduces the material too rapidly, causing warping of the material.

4. The discharging or de-molding phase.
When the product within te mould has cooled adequately, the molder handling the operation can then extract the finalized item from the mold. The process is repeated from the start, supplying a series of similar items.

For more information on the different rotational rotomolding options offered for the Portola CA 96122 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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