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

roto-molding-Kenduskeag-Rotational moulding refers to a plastic manufacturing solution that makes hollow stress-free product lines. The method relies on high temperatures and bi axial rotation to come up with seamless, one piece products that have different shapes, sizes and colors. This technique is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The function that makes this unique from other plastic manufacturing procedures because no pressure is required. It also has few contenders when it comes to the production of large hollow items which are long lasting and inexpensive.There is a wide range of product lines that are developed by this process including big water tanks, automobile products, intricate designed medical items, recreation equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in terms of style and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Kenduskeag ME 4450, 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 Molding-Kenduskeag-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 Maine 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 Kenduskeag Maine 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 technique has been used since ancient times for creatingvseverl products. Egyptians for example, utilized rotocasting procedures in the creating of ceramics. The Swiss were also employing this rotation design to generate hollow chocolate eggs. Some plastic product lines in the USA were manufactured using this approach some time between 1940 and 1950. Considering that it was viewed to be a very slow-moving system, the approach has however taken long to catch on

1. Mould preparation.
A fixed volume of polymer in powder form is filled into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel component. The colour wanted for the finished product 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 up to temperatures between 500-700F. The mold with the powdered polymer is then locked and positioned into the oven.

2. The heat and fusion step.
Once placed into the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done slowly and gradually, about 20 rotations per minute. Something that is critical at this moment is the amount of time the mould will spend inside the oven. If it overstays, the component will lose value and strength, making a poor product. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which develops bubbles in the finished item.

3. Mould cooling down.
When the product has completely spent the correct amount 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 creates a cool mist. When the product cools, it reduces somewhat for ease of extraction from the mold. This is an additional measure that relies a lot on the right timing, since quick cooling shrinks the material too quick, causing bending of the item.

4. The unloading or de-molding step.
As soon as the product within te mold has cooled correctly, the person handling the process can then extract the completed product from the mould. The process is repeated from the beginning, supplying a series of exact items.

For more information on the different rotational rotomolding options offered for the Kenduskeag ME 4450 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 molding

Local Resources

Production Example
Google Map