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

roto-molding-Janesville-Rotational molding refers to a plastic production practice that produces hollow stress-free products. The process relies upon high temperatures and bi axial rotation to come up with seamless, one piece items that have many different designs, sizes and colors. This technique is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The feature that makes this different from other plastic manufacturing methods that no pressure is needed. It also has few rivals when it comes down to the creation of large size hollow products which are durable and inexpensive.There is a wide variety of product lines that are developed by this process including large size water tanks, automobile items, intricate shaped medical items, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility 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 Janesville MN 56048, 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 Products-Janesville-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 Minnesota 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 Janesville Minnesota 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 Method Components

This moulding operation has been used since earlier times for creatingvseverl items. Egyptians as an example, employed rotational molding procedures in the making of ceramics. The Swiss were also using this rotation technique to make hollow chocolate eggs. Some plastic products in the USA were made utilizing this method some time between 1940 and 1950. Considering that it was looked at to be a relatively slow-moving approach, the process has however taken long to catch on

1. Mould prep work.
A fixed amount of polymer in powder form is loaded into a hollow mold. The mold is usually made from cast aluminium or sheet steel substance. The coloring intended 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 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 mold with the powdered polymer is then locked and positioned within the oven.

2. The heating and fusion procedure.
Once within the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The rotation is done gradually, about 20 rotations per minute. The main thing that is critical at this moment is the amount of time the mold will spend within the oven. If it stays to long, the product will lose stability and strength, creating a weak item. If it is extracted from the oven too early, the polymer will not have liquefied correctly, which creates bubbles in the finished item.

3. Mould cooling.
When the product has completely spent the correct 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 a cool mist. When the product cools, it shrinks somewhat for ease of extraction from the mold. This is yet another step that depends upon a lot on the right timing, since rapid cooling decreases the material too fast, causing warping of the product.

4. The unloading or de-moulding phase.
As soon as the component inside te mold has cooled effectively, the person managing the procedure can then extract the completed product from the mold. The function is repeated from the beginning, providing a number of identical items.

For more information on the different rotational rotomolding options offered for the Janesville MN 56048 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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