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

rotocasting-Haviland-Rotational molding pertains to a plastic manufacturing technique that creates hollow stress-free products. The procedure depends on high temperatures and bi axial rotation to follow up with seamless, one piece items that have several shapes, colors and sizes. This method is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The feature that makes this unique from other plastic manufacturing techniques in that no pressure is required. It also has few rivals when it involves the creation of large size hollow items which are resilient and inexpensive.There is a wide variety of items that are created by this process including large water tanks, automobile products, sophisticated molded medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in terms of type 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 Haviland KS 67059, 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

Plastic Molding-Haviland-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 Haviland 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 Roto-Molding Process in Detail

This moulding method has been used since earlier times for creatingvseverl items. Egyptians for example, applied rotocasting procedures in the producing of ceramics. The Swiss were also working with this rotation method to generate hollow chocolate eggs. Some plastic products in the USA were manufactured using this procedure some time between 1940 and 1950. Because it was regarded to be a fairly slow technique, the technique has however taken long to catch on

1. Mould readying.
A predetermined volume of polymer in particle form is filled into a hollow mould. The mould is usually built from cast aluminium or sheet steel substance. The colour intended for the final item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic manufacturing.

Preheating 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 mould with the powdered polymer is then locked and placed inside the oven.

2. The heating and fusion phase.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done slowly and gradually, about 20 spins per min. The main thing that is critical at this moment is the amount of time the mold will spend inside the oven. If it stays to long, the product will lose value and durability, making a poor item. If it is extracted from the oven too early, the polymer will not have liquefied properly, which creates bubbles in the completed product.

3. Mould cooling.
When the product has sufficiently spent the right 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 generates a cool mist. When the product cools, it shrinks a little for ease of removal from the mould. This is an additional step that relies a lot on the ideal timing, since quick cooling shrinks the material too quickly, causing warping of the product.

4. The offloading or de-molding step.
As soon as the material within te mold has cooled properly, the person managing the process can then remove the finalized product from the mold. The process is repeated from the beginning, making a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Haviland KS 67059 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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