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

rotational molding-Altoona-Rotational molding pertains to a plastic manufacturing practice that generates hollow stress-free product lines. The function relies upon 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 referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this different from other plastic manufacturing methods in that no pressure is needed. It also has few rivals when it comes to the manufacture of sizable hollow items which are resilient and inexpensive.There is a wide range of product lines that are produced by this process including large size water tanks, automobile products, sophisticated shaped medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is because of 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 Altoona WI 54720, 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 roto-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-Altoona-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 Wisconsin 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 Altoona Wisconsin 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 molding method has been used since ancient times for creatingvseverl products. Egyptians for instance, utilized rotomoulding procedures in the manufacturing of ceramics. The Swiss were also using this rotation type to make hollow chocolate eggs. Some plastic products in the USA were developed utilizing this technique some time between 1940 and 1950. Since it was viewed to be a somewhat slow-moving system, the method has however taken long to catch on

1. Mold preparation.
A predetermined measure of polymer in particle form is loaded into a hollow mold. The mold is usually built from cast aluminium or sheet steel component. The color tone desired for the finished goods 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 design of plastic engineering.

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 sealed and installed inside the oven.

2. The heating and fusion step.
Once within the oven, the mold is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The spinning is done slowly, about 20 spins per min. 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 product will lose value and strength, making a weak item. If it is extracted from the oven too early, the polymer will not have melted correctly, which creates bubbles in the finalized product line.

3. Mould cooling down.
When the product has completely spent the correct 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 component cools, it shrinks slightly for ease of removal from the mould. This is another measure that depends a lot on the ideal timing, since rapid cooling reduces the material too fast, causing warping of the material.

4. The unloading or de-molding step.
When the product inside te mold has cooled correctly, the molder managing the process can then remove the finished item from the mould. The function is repeated from the start, supplying a number of similar product lines.

For more information on the different rotational molding options offered for the Altoona WI 54720 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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