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

rotational moulding-Rochester-Rotational molding pertains to a plastic production technique that makes hollow stress-free products. The function depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have various shapes, sizes and colors. This procedure is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The benefit that makes this unique from other plastic manufacturing procedures in that no pressure is needed. It also has few contenders when it involves the creation of large size hollow items which are resilient and inexpensive.There is a wide range of product lines that are developed by this process including large size water tanks, automobile products, intricate designed medical products, leisure equipment, toys, canoes, industrialized equipment among many others.This is due to the versatility in regards to design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Rochester WA 98579, 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-Rochester-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 Rochester 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 Roto-Molding Process Components

This moulding process has been used since early times for creatingvseverl items. Egyptians for instance, utilized rotomoulding solutions in the making of ceramics. The Swiss were also employing this rotation technique to make hollow chocolate eggs. Some plastic products in the USA were created using this technique some time between 1940 and 1950. The procedure has however taken long to catch on because it was considered as being a relatively slow process

1. Mould readying.
A fixed amount of polymer in particle form is packed into a hollow mold. The mold is usually comprised of cast aluminium or sheet steel substance. The color tone intended for the finished goods is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic engineering.

Pre-heating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then secured and installed into the oven.

2. The heating up and fusion process.
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 mould. The turning is done gradually, about 20 revolutions per sixty seconds. One 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 product will lose value and durability, producing a poor product. If it is removed from the oven too early, the polymer will not have flowed properly, which creates bubbles in the finalized item.

3. Mold cooling down.
When the component has completely spent the enough of time in the oven, it is then removed for cooling. This may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the product cools, it shrinks slightly for ease of removal from the mould. This is yet another measure that depends upon a lot on the right timing, since rapid cooling decreases the material too quick, causing bending of the material.

4. The removing or de-moulding phase.
Once the component within te mold has cooled successfully, the person managing the operation can then take out the finalized product from the mould. The function is repeated from the beginning, making a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Rochester WA 98579 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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