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

rotocasting-Elkhart Lake-Rotational molding pertains to a plastic manufacturing technique that makes hollow stress-free products. The technique utilizes high temperatures and bi axial rotation to come up with seamless, one piece objects that have different designs, sizes and colors. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing methods in that no pressure is involved. It also has few competitors when it pertains to the manufacture of large size hollow products which are durable and inexpensive.There is a variety of products that are created by this process including large water tanks, automobile items, sophisticated shaped medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the versatility in terms of style and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Elkhart Lake WI 53020, 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

Plastic Manufacturing-Elkhart Lake-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 Elkhart Lake 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 Procedure Components

This molding process has been used since ancient times for creatingvseverl items. Egyptians as an example, applied rotocasting techniques in the of ceramics. The Swiss were also working with this rotation design to make hollow chocolate eggs. Some plastic items in the USA were made using this technique some time between 1940 and 1950. Due to the fact that it was considered to be a somewhat slow process, the method has however taken long to catch on

1. Mold fitting.
A predetermined quantity of polymer in grain form is loaded into a hollow mold. The mold is usually composeded of cast aluminium or sheet steel substance. The colour desired for the final item 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.

Preheating of the oven starts, 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 sealed and positioned into the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The rotation is done slowly, about 20 revolutions per minute. One thing that is important at this point is the amount of time the mold will spend within the oven. If it overstays, the product will lose stability and durability, creating a poor item. If it is extracted from the oven prematurely, the polymer will not have flowed correctly, which develops bubbles in the finalized item.

3. Mould cooling.
When the product has sufficiently 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 creates a cool mist. When the product cools, it reduces a little for ease of removal from the mold. This is one more measure that depends upon a lot on the right timing, since quick cooling reduces the material too quickly, causing bending of the item.

4. The discharging or de-moulding step.
When the component inside te mold has cooled adequately, the molder managing the procedure can then extract the completed product from the mould. The technique is repeated from the start, supplying a series of exact product lines.

For more information on the different rotational molding options offered for the Elkhart Lake WI 53020 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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