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

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

The feature that makes this different from other plastic manufacturing procedures because no pressure is called for. It also has few rivals when it involves the creation of sizable hollow items which are long lasting and inexpensive.There is a wide variety of products that are developed by this process including large water tanks, automobile items, intricate molded medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in terms of style and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Hamilton WA 98255, 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 rotational 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-Hamilton-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 Washington 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 Hamilton Washington 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 Rotomoulding Process Components

This moulding process has been used since early times for creatingvseverl products. Egyptians for instance, employed rotocasting techniques in the creating of ceramics. The Swiss were also working with this rotation method to create hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this technique some time between 1940 and 1950. The system has however taken very long to take affect because it was thought of to be a pretty slow-moving process

1. Mold preparation.
A fixed measure of polymer in particle form is loaded into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel component. The color tone wanted for the finished product 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 engineering.

Preheating of the oven follows, 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 secured and positioned into the oven.

2. The heating and fusion procedure.
Once inside the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done slowly, about 20 revolutions per min. The main thing that is vital at this point is the amount of time the mold will spend inside the oven. If it stays to long, the material will lose value and strength, generating a faulty item. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which develops bubbles in the finalized product line.

3. Mold cooling down.
When the component has sufficiently spent the correct 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 generates a cool mist. When the component cools, it shrinks slightly for ease of removal from the mould. This is yet another measure that depends a lot on the correct timing, since quick cooling reduces the material too fast, causing bending of the material.

4. The un-loading or de-moulding phase.
Once the component within te mould has cooled properly, the molder managing the operation can then remove the finished product from the mould. The process is repeated from the beginning, making a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Hamilton WA 98255 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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