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

rotational molding-Alma-Rotational molding pertains to a plastic production solution that makes hollow stress-free items. The function utilizes high temperatures and bi axial rotation to come up with seamless, one piece items that have varying designs, colors and sizes. This procedure is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this different from other plastic manufacturing methods that no pressure is required. It also has few rivals when it comes to the production of large size hollow products which are resilient and inexpensive.There is a wide range of items that are generated by this process including large water tanks, automobile products, intricate molded medical items, recreation equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in regards to design 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 Alma WI 54610, 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 rotational 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

Custom Molded-Alma-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 Alma 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 Rotomolding Procedure Components

This molding operation has been used since earlier times for creatingvseverl products. Egyptians for instance, employed rotational molding procedures in the making of ceramics. The Swiss were also applying this rotation format to generate hollow chocolate eggs. Some plastic items in the USA were created utilizing this approach some time between 1940 and 1950. The process has however taken very long to take affect because it was thought of as being a pretty slow-moving process

1. Mould preparation.
A predetermined volume of polymer in powder form is filled into a hollow mould. The mould is usually made of cast aluminium or sheet steel material. The coloring chosen for the finished goods is pre compounded into the polymer. The most commonly used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic production.

Preheating 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 mold with the powdered polymer is then sealed and put inside the oven.

2. The heat and fusion process.
Once inside the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mold. The rotation is done slowly, about 20 rotations per minute. One thing that is critical at this moment is the period of time the mold will spend inside the oven. If it overstays, the product will lose value and strength, generating a weak item. If it is removed from the oven too early, the polymer will not have melted properly, which produces bubbles in the completed product.

3. Mould cooling.
When the component has sufficiently 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 generates a cool mist. When the product cools, it reduces a little for ease of extraction from the mould. This is an additional measure that depends a lot on the ideal timing, since rapid cooling shrinks the material too quick, causing warping of the material.

4. The unloading or de-moulding phase.
Once the material inside te mold has cooled correctly, the molder managing the procedure can then extract the finished product from the mould. The function is repeated from the start, making a number of exact products.

For more information on the different rotational molding options offered for the Alma WI 54610 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 plastic products

Local Resources

Production Example
Google Map