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

rotomoulding-Maple Valley-Rotational molding refers to a plastic production procedure that produces hollow stress-free items. The process relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have a wide range of designs, sizes and colors. This technique is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The component that makes this unique from other plastic manufacturing procedures because no pressure is called for. It also has few rivals when it comes to the production of large hollow products which are resilient and inexpensive.There is a variety of product lines that are generated by this process including large size water tanks, automobile items, sophisticated molded medical products, recreation equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in regards to type and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Maple Valley WA 98038, 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-Maple Valley-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 Maple Valley 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 Rotomolding Process in Detail

This molding system has been used since ancient times for creatingvseverl products. Egyptians as an example, used rotocasting procedures in the of ceramics. The Swiss were also employing this rotation style to generate hollow chocolate eggs. Some plastic items in the USA were made using this technique some time between 1940 and 1950. The procedure has however taken long to catch on because it was considered to be a moderately slow-moving process

1. Mold readying.
A fixed quantity of polymer in particle form is packed into a hollow mold. The mould is usually built from cast aluminium or sheet steel component. The color wanted 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 engineering.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then locked and installed inside the oven.

2. The heat and fusion process.
Once within the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The turning is done slowly, about 20 revolutions per sixty seconds. Something that is important at this moment is the amount of time the mold will spend within the oven. If it overstays, the product will lose stability and durability, producing a weak item. If it is extracted from the oven prematurely, the polymer will not have melted properly, which develops bubbles in the completed product line.

3. Mould cooling.
When the product has completely spent the enough 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 creates a cool mist. When the product cools, it reduces somewhat for ease of extraction from the mould. This is one more step that depends upon a lot on the correct timing, since rapid cooling shrinks the material too quickly, causing bending of the item.

4. The un-loading or de-molding phase.
When the product inside te mould has cooled effectively, the person managing the operation can then extract the finalized item from the mould. The process is repeated from the start, supplying a series of exact products.

For more information on the different rotational rotomolding options offered for the Maple Valley WA 98038 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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