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

rotocasting-Mckenna-Rotational molding pertains to a plastic manufacturing technique that generates hollow stress-free items. The process relies on high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of forms, sizes and colors. This procedure is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The feature that makes this different from other plastic manufacturing procedures in that no pressure is required. It also has few contenders when it involves the production of large size hollow products which are durable and inexpensive.There is a variety of products that are produced by this process including large water tanks, automobile materials, intricate molded medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the versatility in regards to style 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 Mckenna WA 98558, 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

Plastic Products-Mckenna-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 Mckenna 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 Method in Detail

This moulding method has been used since earlier times for creatingvseverl products. Egyptians for example, used rotational molding solutions in the making of ceramics. The Swiss were also working with this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were created using this approach some time between 1940 and 1950. Because it was looked at to be a very slow-moving method, the method has however taken long to become popular

1. Mould preparation.
A predetermined volume of polymer in particle form is packed into a hollow mould. The mold is usually built from cast aluminium or sheet steel component. The coloration preferred for the finished 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 follows, and it may 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 sealed and positioned into the oven.

2. The heat and fusion procedure.
Once placed into the oven, the mould is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The turning is done slowly, about 20 spins per minute. The main thing that is important at this moment is the period of time the mould will spend inside the oven. If it stays to long, the product will lose value and strength, generating a poor product. If it is taken out from the oven too early, the polymer will not have melted properly, which produces bubbles in the completed product line.

3. Mold cooling down.
When the material has sufficiently 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 creates a cool mist. When the product cools, it shrinks a little for ease of removal from the mold. This is another step that depends a lot on the ideal timing, since rapid cooling decreases the material too rapidly, causing bending of the item.

4. The unloading or de-moulding step.
As soon as the component inside te mould has cooled correctly, the person taking care of the operation can then take out the completed product from the mould. The procedure is repeated from the beginning, supplying a series of exact items.

For more information on the different rotational rotomolding options offered for the Mckenna WA 98558 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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