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rotocasting-Washington-Rotational moulding pertains to a plastic production practice that produces hollow stress-free product lines. The process relies on high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various forms, sizes and colors. This procedure is also referred to as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The attribute that makes this unique from other plastic manufacturing techniques that no pressure is required. It also has few rivals when it comes down to the creation of large hollow items which are resilient and inexpensive.There is a wide range of products that are created by this process including big water tanks, automobile materials, sophisticated shaped medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in regards to design and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Washington AR 71862, 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 moulding 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 Manufacturing-Washington-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 Arkansas 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 Washington Arkansas 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 Procedure in Detail

This molding procedure has been used since early times for creatingvseverl items. Egyptians for instance, utilized rotational molding systems in the creating of ceramics. The Swiss were also working with this rotation style to make hollow chocolate eggs. Some plastic products in the USA were made using this method some time between 1940 and 1950. The procedure has however taken long to catch on because it was looked at as being a moderately slow process

1. Mould preparation.
A predetermined amount of polymer in particle form is packed into a hollow mould. The mold is usually composeded of cast aluminium or sheet steel component. The coloring intended for the final item 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.

Pre-heating of the oven starts, and it may 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 inside the oven.

2. The heating and fusion process.
Once inside the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The spinning is done slowly and gradually, about 20 rotations per min. One thing that is essential at this point is the period of time the mold will spend inside the oven. If it overstays, the product will lose stability and strength, creating a weak item. If it is extracted from the oven too early, the polymer will not have melted properly, which develops bubbles in the finalized item.

3. Mould cooling.
When the component 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 generates a cool mist. When the product cools, it shrinks somewhat for ease of removal from the mold. This is an additional step that depends upon a lot on the correct timing, since quick cooling decreases the material too quick, causing bending of the product.

4. The discharging or de-molding phase.
When the component within te mould has cooled properly, the person managing the operation can then take out the finished product from the mold. The process is repeated from the beginning, providing a number of identical products.

For more information on the different rotational rotomolding options offered for the Washington AR 71862 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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