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

roto-molding-Thornton-Rotational molding pertains to a plastic manufacturing practice that generates hollow stress-free product lines. The process relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have a variety of designs, sizes and colors. This technique is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The feature that makes this different from other plastic manufacturing processes that no pressure is called for. It also has few contenders when it comes down to the manufacture of large size hollow products which are durable and inexpensive.There is a wide variety of items that are produced by this process including large water tanks, automobile items, complex designed medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is due to the flexibility in terms of design 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 Thornton CA 95686, 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 rotomolding 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-Thornton-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 Thornton 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 technique has been used since early times for creatingvseverl products. Egyptians for example, employed roto-molding solutions in the producing of ceramics. The Swiss were also applying this rotation design to make hollow chocolate eggs. Some plastic items in the USA were manufactured using this procedure some time between 1940 and 1950. Due to the fact that it was thought of to be a relatively slow-moving approach, the process has however taken long to catch on

1. Mold preparation.
A predetermined volume of polymer in particle form is filled into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel substance. The color tone desired for the final 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 design of plastic assembly.

Pre-heating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then locked and put within the oven.

2. The heating up and fusion step.
Once inside the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done gradually, about 20 spins per sixty seconds. Something that is vital at this moment is the period of time the mold will spend inside the oven. If it overstays, the product will lose stability and durability, creating a poor item. If it is taken out from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the finalized product.

3. Mould cooling.
When the material has completely spent the correct 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 generates a cool mist. When the product cools, it shrinks somewhat for ease of removal from the mould. This is yet another measure that depends upon a lot on the correct timing, since rapid cooling shrinks the material too quickly, causing warping of the product.

4. The discharging or de-molding step.
Once the material within te mould has cooled properly, the person taking care of the process can then extract the completed product from the mould. The function is repeated from the start, providing a number of similar product lines.

For more information on the different rotational rotomolding options offered for the Thornton CA 95686 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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