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

roto-molding-Good Thunder-Rotational moulding refers to a plastic manufacturing method that creates hollow stress-free products. The technique relies on high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying shapes, sizes and colors. 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 techniques in that no pressure is required. It also has few contenders when it involves the manufacture of large size hollow items which are long-lasting and inexpensive.There is a variety of product lines that are created by this process including big water tanks, automobile items, sophisticated shaped medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in regards to design 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 Good Thunder MN 56037, 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-Good Thunder-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 Good Thunder 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 Rotomoulding Process in Detail

This moulding method has been used since ancient times for creatingvseverl products. Egyptians for example, utilized rotational molding techniques in the making of ceramics. The Swiss were also employing this rotation design to create hollow chocolate eggs. Some plastic products in the USA were made using this approach some time between 1940 and 1950. Because it was considered to be a fairly slow process, the approach has however taken long to become popular

1. Mold prep work.
A predetermined quantity of polymer in powder form is filled into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel material. The color chosen for the final goods is pre compounded into the polymer. The most often 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 follows, and it can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then sealed and positioned into the oven.

2. The heat and fusion procedure.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and layers the inside if the mold. The spinning is done slowly, about 20 rotations per sixty seconds. The main thing that is crucial at this point is the amount of time the mold will spend inside the oven. If it stays to long, the material will lose stability and strength, generating a poor item. If it is removed from the oven too early, the polymer will not have liquefied properly, which produces bubbles in the completed product line.

3. Mold cooling.
When the material has completely spent the enough 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 component cools, it shrinks slightly for ease of removal from the mould. This is an additional measure that depends upon a lot on the right timing, since quick cooling shrinks the material too quickly, causing warping of the material.

4. The unloading or de-moulding phase.
As soon as the material within te mould has cooled effectively, the person taking care of the process can then take out the completed product from the mould. The procedure is repeated from the beginning, providing a number of exact product lines.

For more information on the different rotational rotomolding options offered for the Good Thunder MN 56037 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