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

rotocasting-Killen-Rotational moulding pertains to a plastic manufacturing procedure that produces hollow stress-free items. The method depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have a wide range of shapes, sizes and colors. This procedure is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The function that makes this different from other plastic manufacturing methods because no pressure is involved. It also has few competitors when it comes down to the manufacture of large hollow items which are resilient and inexpensive.There is a wide range of items that are created by this process including large size water tanks, automobile materials, complex molded medical items, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in terms of design and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Killen AL 35645, 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 Manufacturing-Killen-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 Alabama 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 Killen Alabama 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 moulding technique has been used since ancient times for creatingvseverl product lines. Egyptians as an example, applied rotational molding solutions in the creating of ceramics. The Swiss were also working with this rotation technique to create hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this approach some time between 1940 and 1950. Considering that it was looked at to be a fairly slow-moving procedure, the procedure has however taken long to become popular

1. Mold readying.
A predetermined quantity of polymer in particle form is packed into a hollow mould. The mold is usually made of cast aluminium or sheet steel component. The color tone chosen for the finished item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic manufacturing.

Pre-heating 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 secured and inserted into the oven.

2. The heating and fusion phase.
Once within the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The rotation is done slowly and gradually, about 20 revolutions per minute. One thing that is vital at this point is the period of time the mould will spend within the oven. If it stays to long, the material will lose value and strength, creating a weak product. If it is removed from the oven prematurely, the polymer will not have flowed properly, which generates bubbles in the finalized product line.

3. Mold cooling down.
When the material has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the material cools, it reduces a little for ease of removal from the mold. This is yet another step that depends a lot on the right timing, since rapid cooling reduces the material too quick, causing warping of the material.

4. The discharging or de-moulding phase.
When the product inside te mold has cooled adequately, the person taking care of the process can then remove the completed product from the mold. The process is repeated from the beginning, supplying a series of exact items.

For more information on the different rotational rotomolding options offered for the Killen AL 35645 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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