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

rotational molding-Etna-Rotational moulding pertains to a plastic manufacturing technique that makes hollow stress-free products. The process relies upon high temperatures and bi axial rotation to follow up with seamless, one piece items that have a variety of forms, sizes and colors. This procedure is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this unique from other plastic manufacturing processes because no pressure is needed. It also has few competitors when it comes down to the production of large size hollow products which are long lasting and inexpensive.There is a wide range of items that are produced by this process including big water tanks, automobile products, sophisticated designed medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in regards to type 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 Etna CA 96027, 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 Molding-Etna-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 Etna 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 Method in Detail

This moulding system has been used since early times for creatingvseverl products. Egyptians for example, worked with roto-molding solutions in the creating of ceramics. The Swiss were also employing this rotation design to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this technique some time between 1940 and 1950. Given that it was viewed to be a very slow-moving system, the method has however taken long to become popular

1. Mold fitting.
A predetermined quantity of polymer in powder form is loaded into a hollow mould. The mold is usually made from cast aluminium or sheet steel material. The colour needed for the final product 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 type of plastic production.

Pre-heating of the oven starts, 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 locked and positioned into the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mould is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The turning is done slowly, about 20 rotations per sixty seconds. The main thing that is critical at this point is the period of time the mould will spend inside the oven. If it overstays, the component will lose stability and strength, producing a faulty item. If it is removed from the oven too early, the polymer will not have liquefied correctly, which creates bubbles in the finalized product.

3. Mold cooling down.
When the product has completely spent the correct amount of time in the oven, it is then taken out 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 slightly for ease of removal from the mold. This is one more procedure that relies a lot on the ideal timing, since rapid cooling decreases the material too rapidly, causing warping of the material.

4. The discharging or de-moulding phase.
As soon as the component within te mold has cooled properly, the molder handling the process can then remove the finalized item from the mould. The procedure is repeated from the beginning, giving a number of similar items.

For more information on the different rotational rotomolding options offered for the Etna CA 96027 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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