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

rotomolding-Stetson-Rotational molding pertains to a plastic production method that generates hollow stress-free products. The function uses high temperatures and bi axial rotation to follow up with seamless, one piece products that have a variety of forms, colors and sizes. This procedure is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The feature that makes this different from other plastic manufacturing processes in that no pressure is required. It also has few contenders when it pertains to the production of sizable hollow items which are long-lasting and inexpensive.There is a variety of items that are generated by this process including big water tanks, automobile products, complex shaped medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the flexibility in regards to type and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Stetson ME 4488, 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 Molded-Stetson-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 Stetson 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 Roto-Molding Process in Detail

This molding technique has been used since earlier times for creatingvseverl products. Egyptians as an example, worked with roto-molding solutions in the making of ceramics. The Swiss were also using this rotation technique to make hollow chocolate eggs. Some plastic product lines in the USA were made utilizing this technique some time between 1940 and 1950. The process has however taken very long to catch on because it was thought of as being a somewhat slow-moving process

1. Mold readying.
A fixed measure of polymer in powder form is loaded into a hollow mold. The mould is usually crafted from cast aluminium or sheet steel component. The coloration needed for the end 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 design of plastic assembly.

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

2. The heating and fusion phase.
Once placed into the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The spinning is done slowly and gradually, about 20 rotations per minute. The main thing that is vital at this moment is the period of time the mould will spend inside the oven. If it stays to long, the material will lose value and durability, making a faulty item. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which produces bubbles in the completed product.

3. Mould cooling.
When the product has sufficiently spent the correct amount of time in the oven, it is then removed 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 extraction from the mould. This is an additional measure that relies a lot on the correct timing, since quick cooling shrinks the material too fast, causing warping of the product.

4. The discharging or de-molding step.
Once the material inside te mould has cooled correctly, the person managing the procedure can then extract the finished product from the mould. The function is repeated from the start, making a series of identical product lines.

For more information on the different rotational rotomolding options offered for the Stetson ME 4488 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 molded

Local Resources

Production Example
Google Map