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

roto-molding-Manhattan-Rotational molding refers to a plastic manufacturing practice that makes hollow stress-free items. The procedure utilizes high temperatures and bi axial rotation to follow up with seamless, one piece objects that have a variety of shapes, sizes and colors. This method is also called rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The function that makes this unique from other plastic manufacturing processes because no pressure is called for. It also has few rivals when it pertains to the creation of large size hollow items which are resilient and inexpensive.There is a wide range of items that are created by this process including big water tanks, automobile materials, intricate molded medical items, recreation equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in terms of style and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Manhattan KS 66502, 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 Molded-Manhattan-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 Kansas 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 Manhattan Kansas 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 system has been used since early times for creatingvseverl product lines. Egyptians for instance, utilized rotational molding methods in the producing of ceramics. The Swiss were also working with this rotation format to make hollow chocolate eggs. Some plastic items in the USA were created using this procedure some time between 1940 and 1950. The procedure has however taken very long to catch on because it was thought of as being a relatively slow-moving process

1. Mold preparation.
A fixed measure of polymer in grain form is packed into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel material. The colour chosen 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 engineering.

Pre-heating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then secured and placed within the oven.

2. The heat and fusion phase.
Once within the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done gradually, about 20 rotations per sixty seconds. The main thing that is vital at this point is the period of time the mold will spend inside the oven. If it stays to long, the component will lose value and strength, creating a faulty 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 product has completely spent the right amount of time in the oven, it is then extracted 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 shrinks somewhat for ease of extraction from the mold. This is yet another step that depends a lot on the correct timing, since rapid cooling decreases the material too rapidly, causing warping of the item.

4. The discharging or de-molding step.
As soon as the product inside te mold has cooled correctly, the person managing the process can then take out the finalized item from the mould. The procedure is repeated from the beginning, providing a number of identical products.

For more information on the different rotational rotomolding options offered for the Manhattan KS 66502 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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