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

rotocasting-Eureka-Rotational molding refers to a plastic manufacturing practice that creates hollow stress-free products. The procedure relies upon high temperatures and bi axial rotation to come up with seamless, one piece items that have a variety of shapes, sizes and colors. This method is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing processes because no pressure is called for. It also has few rivals when it involves the production of sizable hollow products which are durable and inexpensive.There is a wide range of items that are generated by this process including large water tanks, automobile products, complex shaped medical items, leisure equipment, toys, canoes, industrialized equipment among many others.This is because of the versatility in regards to style and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Eureka CA 95501, 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 roto-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

Custom Molding-Eureka-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 Eureka 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 Roto-Molding Procedure Components

This moulding system has been used since ancient times for creatingvseverl products. Egyptians for example, utilized rotational molding systems in the manufacturing of ceramics. The Swiss were also applying this rotation approach to generate hollow chocolate eggs. Some plastic products in the USA were developed using this approach some time between 1940 and 1950. The process has however taken very long to take affect because it was considered to be a rather slow-moving process

1. Mold prep work.
A fixed quantity of polymer in powder form is loaded into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel substance. The colour intended for the final item 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 style of plastic assembly.

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 placed within the oven.

2. The heating and fusion process.
Once placed into the oven, the mould 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 rotations per sixty seconds. The main thing that is important at this moment is the period of time the mold will spend inside the oven. If it stays to long, the material will lose stability and strength, making a faulty item. If it is extracted from the oven prematurely, the polymer will not have flowed properly, which creates bubbles in the completed product line.

3. Mold cooling.
When the material has sufficiently spent the right amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it reduces slightly for ease of removal from the mould. This is an additional measure that relies a lot on the right timing, since rapid cooling decreases the material too fast, causing bending of the product.

4. The unloading or de-molding step.
When the component inside te mould has cooled successfully, the person handling the procedure can then extract the finalized item from the mold. The function is repeated from the start, making a series of exact product lines.

For more information on the different rotational rotomolding options offered for the Eureka CA 95501 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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