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

rotational moulding-Winthrop-Rotational molding pertains to a plastic manufacturing practice that generates hollow stress-free items. The function relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have different shapes, colors and sizes. This method is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The benefit that makes this unique from other plastic manufacturing procedures because no pressure is required. It also has few rivals when it comes to the production of large hollow products which are durable and inexpensive.There is a variety of items that are created by this process including large size water tanks, automobile materials, sophisticated molded medical items, recreation equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in terms of style and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Winthrop WA 98862, 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-Winthrop-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 Winthrop 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 Components

This moulding technique has been used since early times for creatingvseverl items. Egyptians as an example, applied rotomoulding techniques in the creating of ceramics. The Swiss were also working with this rotation method to make 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 take affect because it was looked at to be a moderately slow-moving process

1. Mold fitting.
A predetermined quantity of polymer in powder form is loaded into a hollow mould. The mould is usually built from cast aluminium or sheet steel component. The color intended 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 format of plastic production.

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

2. The heating and fusion procedure.
Once within the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The turning is done gradually, about 20 rotations per min. The main thing that is crucial at this moment is the amount of time the mould will spend within the oven. If it stays to long, the component will lose value and durability, producing a weak product. If it is taken out from the oven too early, the polymer will not have liquefied properly, which develops bubbles in the finished product.

3. Mould cooling.
When the material has completely spent the right amount 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 reduces somewhat for ease of removal from the mold. This is yet another measure that relies a lot on the ideal timing, since rapid cooling reduces the material too quickly, causing bending of the product.

4. The unloading or de-molding phase.
As soon as the material inside te mould has cooled correctly, the molder managing the process can then take out the completed item from the mold. The technique is repeated from the start, giving a series of exact items.

For more information on the different rotational rotomolding options offered for the Winthrop WA 98862 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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