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rotocasting-West Bend-Rotational moulding refers to a plastic production procedure that produces hollow stress-free products. The procedure utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have varying designs, colors and sizes. This technique is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this different from other plastic manufacturing processes that no pressure is required. It also has few competitors when it comes down to the manufacture of sizable hollow items which are resilient and inexpensive.There is a variety of products that are created by this process including large water tanks, automobile materials, complex molded medical products, recreation equipment, toys, kayaks, commercial equipment among many others.This is due to the flexibility in terms of 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 West Bend IA 50597, 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 rotomoulding 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-West Bend-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 Iowa 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 West Bend Iowa 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 Rotomoulding Method Components

This moulding operation has been used since earlier times for creatingvseverl products. Egyptians as an example, employed rotomoulding techniques in the of ceramics. The Swiss were also making use of this rotation type to create hollow chocolate eggs. Some plastic products in the USA were manufactured utilizing this technique some time between 1940 and 1950. Since it was thought of to be a very slow process, the process has however taken long to catch on

1. Mold fitting.
A predetermined measure of polymer in grain form is filled into a hollow mould. The mould is usually made of cast aluminium or sheet steel component. The coloration wanted for the end product is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic assembly.

Pre-heating of the oven follows, 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 placed within the oven.

2. The heat and fusion process.
Once inside the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The rotation is done slowly and gradually, about 20 rotations per min. Something that is important at this point is the period of time the mould will spend inside the oven. If it stays to long, the component will lose stability and strength, generating a weak item. If it is taken out from the oven prematurely, the polymer will not have flowed correctly, which creates bubbles in the completed product line.

3. Mold cooling down.
When the component has sufficiently spent the correct amount of time in the oven, it is then extracted for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it shrinks slightly for ease of removal from the mold. This is one more measure that depends a lot on the correct timing, since quick cooling reduces the material too fast, causing warping of the material.

4. The removing or de-molding phase.
As soon as the component within te mould has cooled effectively, the person taking care of the procedure can then remove the finished product from the mould. The procedure is repeated from the start, making a series of similar products.

For more information on the different rotational rotomolding options offered for the West Bend IA 50597 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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