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

roto-molding-Hanford-Rotational moulding refers to a plastic manufacturing technique that generates hollow stress-free products. The function depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have varying shapes, sizes and colors. This technique is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The attribute that makes this unique from other plastic manufacturing processes that no pressure is needed. It also has few competitors when it comes down to the production of large hollow items which are long-lasting and inexpensive.There is a wide range of products that are developed by this process including big water tanks, automobile items, sophisticated designed medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in terms of style and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Hanford CA 93230, 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 Molded-Hanford-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 Hanford 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 moulding procedure has been used since earlier times for creatingvseverl items. Egyptians for instance, used rotocasting procedures in the making of ceramics. The Swiss were also making use of this rotation technique to create hollow chocolate eggs. Some plastic products in the USA were made using this technique some time between 1940 and 1950. The system has however taken long to take affect because it was considered to be a very slow-moving process

1. Mold readying.
A predetermined volume of polymer in powder form is filled into a hollow mold. The mould is usually made of cast aluminium or sheet steel substance. The colour needed for the final product is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic assembly.

Pre-heating of the oven follows, and it can 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 sealed and positioned inside the oven.

2. The heating up and fusion step.
Once within the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The rotation is done slowly, about 20 rotations per min. One thing that is important at this point is the period of time the mold will spend inside the oven. If it overstays, the component will lose value and durability, generating a weak item. If it is removed from the oven too early, the polymer will not have liquefied properly, which generates bubbles in the finalized item.

3. Mould cooling down.
When the product has sufficiently spent the enough 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 generates a cool mist. When the component cools, it shrinks a little for ease of extraction from the mould. This is an additional measure that relies a lot on the ideal timing, since quick cooling decreases the material too rapidly, causing warping of the item.

4. The un-loading or de-molding step.
Once the product inside te mold has cooled adequately, the person handling the procedure can then extract the completed item from the mould. The technique is repeated from the beginning, supplying a series of exact products.

For more information on the different rotational rotomolding options offered for the Hanford CA 93230 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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