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

roto-molding-Crandon-Rotational molding pertains to a plastic production technique that produces hollow stress-free product lines. The method depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have a variety of designs, sizes and colors. This method is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl types.

The component that makes this unique from other plastic manufacturing methods in that no pressure is involved. It also has few competitors when it involves the production of large size hollow items which are long-lasting and inexpensive.There is a wide range of products that are created by this process including large size water tanks, automobile products, intricate molded medical items, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the versatility in terms of type and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Crandon WI 54520, 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 rotomolding 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-Crandon-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 Crandon 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 Process Components

This moulding operation has been used since ancient times for creatingvseverl items. Egyptians for instance, worked with roto-molding procedures in the making of ceramics. The Swiss were also working with this rotation format to make hollow chocolate eggs. Some plastic products in the USA were manufactured using this approach some time between 1940 and 1950. Given that it was viewed to be a somewhat slow approach, the technique has however taken long to become popular

1. Mold fitting.
A fixed amount of polymer in particle form is loaded into a hollow mold. The mold is usually made of cast aluminium or sheet steel component. The color tone preferred for the finished goods is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic manufacturing.

Pre-heating of the oven follows, and it can 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 into the oven.

2. The heating and fusion step.
Once within the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The rotation is done slowly and gradually, about 20 spins per minute. Something that is essential at this point is the period of time the mould will spend within the oven. If it stays to long, the material will lose value and strength, creating a faulty item. If it is removed from the oven too early, the polymer will not have melted correctly, which generates bubbles in the finalized product line.

3. Mould cooling.
When the material has completely spent the enough 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 a cool mist. When the component cools, it reduces a little for ease of extraction from the mould. This is one more procedure that relies a lot on the right timing, since quick cooling decreases the material too rapidly, causing bending of the product.

4. The un-loading or de-molding step.
Once the material within te mold has cooled properly, the molder handling the operation can then remove the completed product from the mold. The function is repeated from the start, making a series of similar products.

For more information on the different rotational molding options offered for the Crandon WI 54520 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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