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

rotational moulding-Big Bear Lake-Rotational moulding pertains to a plastic manufacturing procedure that produces hollow stress-free product lines. The procedure utilizes high temperatures and bi axial rotation to follow up with seamless, one piece products that have different designs, sizes and colors. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The benefit that makes this unique from other plastic manufacturing techniques because no pressure is called for. It also has few competitors when it involves the production of large size hollow items which are long lasting and inexpensive.There is a wide variety of product lines that are developed by this process including large water tanks, automobile products, sophisticated designed medical products, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in terms of design 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 Big Bear Lake CA 92315, 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

Plastic Molding-Big Bear Lake-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 Big Bear Lake 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 in Detail

This molding method has been used since early times for creatingvseverl items. Egyptians for instance, applied roto-molding methods in the of ceramics. The Swiss were also using this rotation design to create hollow chocolate eggs. Some plastic items in the USA were developed using this approach some time between 1940 and 1950. The technique has however taken very long to catch on because it was considered as being a very slow process

1. Mould readying.
A predetermined quantity of polymer in grain form is filled into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel material. The color chosen for the finished 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 type of plastic manufacturing.

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 sealed and positioned into the oven.

2. The heating and fusion step.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The rotation is done slowly and gradually, about 20 revolutions per min. Something that is crucial at this moment is the period of time the mold will spend within the oven. If it stays to long, the component will lose stability and strength, creating a faulty item. If it is extracted from the oven too early, the polymer will not have flowed correctly, which creates bubbles in the finalized item.

3. Mould cooling.
When the component has sufficiently spent the enough 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 product cools, it reduces a little for ease of removal from the mould. This is one more procedure that relies a lot on the ideal timing, since rapid cooling decreases the material too quick, causing bending of the material.

4. The unloading or de-molding step.
When the component inside te mold has cooled adequately, the molder managing the operation can then extract the finished item from the mould. The technique is repeated from the start, giving a number of identical items.

For more information on the different rotational rotomolding options offered for the Big Bear Lake CA 92315 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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