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

rotocasting-Rosendale-Rotational molding refers to a plastic manufacturing method that creates hollow stress-free product lines. The technique uses high temperatures and bi axial rotation to come up with seamless, one piece items that have many different shapes, sizes and colors. This method is also referred to as roto-molding 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 needed. It also has few contenders when it comes down to the creation of large size hollow items which are resilient and inexpensive.There is a wide range of product lines that are produced by this process including big water tanks, automobile items, complex molded medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in terms of type 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 Rosendale MO 64483, 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

Custom Molded-Rosendale-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 Missouri 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 Rosendale Missouri 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 Components

This moulding system has been used since earlier times for creatingvseverl product lines. Egyptians for instance, employed rotational molding systems in the of ceramics. The Swiss were also applying this rotation design to make hollow chocolate eggs. Some plastic product lines in the USA were created using this method some time between 1940 and 1950. The process has however taken very long to take affect because it was considered to be a rather slow-moving process

1. Mould readying.
A predetermined measure of polymer in particle form is filled into a hollow mold. The mold is usually crafted from cast aluminium or sheet steel component. The color tone desired for the finished goods 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 type of plastic assembly.

Pre-heating of the oven follows, 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 locked and inserted into the oven.

2. The heating up and fusion phase.
Once within the oven, the mould is revolved on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The turning is done slowly, about 20 spins per minute. The main thing that is essential at this moment is the period of time the mould will spend within the oven. If it stays to long, the material will lose stability and durability, making a poor product. If it is taken out from the oven too early, the polymer will not have liquefied properly, which generates bubbles in the completed product.

3. Mould cooling.
When the product has completely spent the enough of time in the oven, it is then removed for cooling. This may 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 step that relies a lot on the correct timing, since quick cooling reduces the material too quickly, causing bending of the material.

4. The un-loading or de-molding step.
As soon as the component within te mould has cooled effectively, the person handling the process can then extract the completed product from the mould. The process is repeated from the start, providing a series of identical product lines.

For more information on the different rotational molding options offered for the Rosendale MO 64483 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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