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

rotational moulding-Gilroy-Rotational moulding pertains to a plastic manufacturing practice that produces hollow stress-free product lines. The technique depends on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various shapes, sizes and colors. This technique is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this unique from other plastic manufacturing processes because no pressure is required. It also has few contenders when it pertains to the creation of sizable hollow products which are durable and inexpensive.There is a wide variety of items that are created by this process including large water tanks, automobile products, sophisticated shaped medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in regards to design and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Gilroy CA 95020, 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 rotocasting 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-Gilroy-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 Gilroy 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 as an example, utilized rotomoulding procedures in the creating of ceramics. The Swiss were also using this rotation style to generate hollow chocolate eggs. Some plastic product lines in the USA were made using this approach some time between 1940 and 1950. Since it was thought of to be a fairly slow-moving system, the process has however taken long to become popular

1. Mould fitting.
A predetermined amount of polymer in powder form is packed into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel material. The color tone intended for the finished item 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 design of plastic engineering.

Preheating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then locked and inserted within the oven.

2. The heating up and fusion process.
Once inside the oven, the mold is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done slowly, about 20 revolutions per min. One thing that is critical at this point is the period of time the mold will spend within the oven. If it stays to long, the component will lose stability and durability, creating a weak product. If it is taken out from the oven prematurely, the polymer will not have melted properly, which generates bubbles in the finished product line.

3. Mold cooling.
When the material has completely spent the right amount 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 component cools, it shrinks a little for ease of extraction from the mold. This is an additional step that depends a lot on the correct timing, since quick cooling shrinks the material too rapidly, causing bending of the product.

4. The unloading or de-moulding phase.
As soon as the product within te mould has cooled successfully, the person managing the operation can then extract the completed product from the mold. The process is repeated from the start, giving a series of exact items.

For more information on the different rotational rotomolding options offered for the Gilroy CA 95020 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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