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

rotomoulding-Amberg-Rotational moulding refers to a plastic manufacturing practice that generates hollow stress-free products. The method uses high temperatures and bi axial rotation to come up with seamless, one piece products that have a wide range of forms, colors and sizes. This technique is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this different from other plastic manufacturing procedures that no pressure is called for. It also has few rivals when it pertains to the creation of large size hollow items which are resilient and inexpensive.There is a variety of items that are generated by this process including big water tanks, automobile items, intricate designed medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in regards to design and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Amberg WI 54102, 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

Custom Molding-Amberg-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 Amberg 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 Roto-Molding Method in Detail

This moulding method has been used since ancient times for creatingvseverl products. Egyptians for instance, applied roto-molding systems in the making of ceramics. The Swiss were also working with this rotation method to create hollow chocolate eggs. Some plastic product lines in the USA were manufactured using this technique some time between 1940 and 1950. Due to the fact that it was viewed to be a fairly slow system, the system has however taken long to become popular

1. Mould preparation.
A predetermined amount of polymer in grain form is packed into a hollow mold. The mould is usually made from cast aluminium or sheet steel material. The coloration wanted for the end 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 design of plastic manufacturing.

Pre-heating of the oven starts, and it can 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 inserted inside the oven.

2. The heat and fusion procedure.
Once within the oven, the mould is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The rotation is done gradually, about 20 revolutions per sixty seconds. The main thing that is important at this moment is the period of time the mould will spend inside the oven. If it stays to long, the material will lose stability and durability, making a weak product. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which creates bubbles in the finished product line.

3. Mould cooling down.
When the product has sufficiently spent the enough of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it shrinks a little for ease of extraction from the mould. This is an additional measure that depends a lot on the right timing, since quick cooling reduces the material too fast, causing warping of the item.

4. The discharging or de-moulding step.
Once the product inside te mold has cooled successfully, the person handling the process can then extract the completed item from the mold. The procedure is repeated from the start, giving a number of similar products.

For more information on the different rotational molding options offered for the Amberg WI 54102 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to custom molding

Local Resources

Production Example
Google Map