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

rotomolding-Burlingame-Rotational molding refers to a plastic production method that produces hollow stress-free products. The method utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have a variety of shapes, colors and sizes. This technique is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this different from other plastic manufacturing techniques in that no pressure is required. It also has few contenders when it comes to the creation of large hollow items which are durable and inexpensive.There is a variety of items that are produced by this process including large water tanks, automobile items, complex shaped medical products, leisure equipment, toys, canoes, industrialized equipment among many others.This is because of the versatility in regards to design and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Burlingame CA 94010, 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 Molding-Burlingame-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 Burlingame 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 Process Components

This moulding process has been used since ancient times for creatingvseverl products. Egyptians for instance, applied roto-molding techniques in the making of ceramics. The Swiss were also making use of this rotation type to generate hollow chocolate eggs. Some plastic products in the USA were manufactured using this procedure some time between 1940 and 1950. Due to the fact that it was viewed to be a fairly slow approach, the system has however taken long to catch on

1. Mold prep work.
A fixed amount of polymer in particle form is filled into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel substance. The coloration desired 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 type of plastic manufacturing.

Pre-heating of the oven follows, and it may 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 secured and installed within the oven.

2. The heat and fusion process.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done slowly, about 20 rotations per sixty seconds. The main thing that is important at this point is the period of time the mould will spend within the oven. If it overstays, the component will lose stability and strength, making a poor product. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which creates bubbles in the finished product.

3. Mold cooling down.
When the product has sufficiently spent the right amount 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 component cools, it shrinks a little for ease of extraction from the mold. This is yet another step that depends upon a lot on the ideal timing, since quick cooling shrinks the material too fast, causing bending of the material.

4. The removing or de-molding phase.
Once the product inside te mold has cooled effectively, the molder taking care of the procedure can then remove the completed item from the mould. The technique is repeated from the beginning, providing a series of exact products.

For more information on the different rotational rotomolding options offered for the Burlingame CA 94010 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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