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

roto-molding-Stockton Springs-Rotational molding pertains to a plastic production method that produces hollow stress-free product lines. The technique depends on high temperatures and bi axial rotation to come up with seamless, one piece items that have many different shapes, colors and sizes. This technique is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing processes because no pressure is called for. It also has few contenders when it comes to the creation of large hollow products which are long-lasting and inexpensive.There is a variety of products that are produced by this process including big water tanks, automobile products, complex designed medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in terms of type and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Stockton Springs ME 4981, 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 moulding 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-Stockton Springs-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 Stockton Springs 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 in Detail

This molding operation has been used since earlier times for creatingvseverl items. Egyptians for instance, utilized rotomoulding solutions in the of ceramics. The Swiss were also using this rotation technique to create hollow chocolate eggs. Some plastic products in the USA were made utilizing this approach some time between 1940 and 1950. The procedure has however taken very long to catch on because it was looked at to be a moderately slow-moving process

1. Mold readying.
A predetermined quantity of polymer in grain form is filled into a hollow mould. The mould is usually comprised of cast aluminium or sheet steel material. The color intended 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 engineering.

Pre-heating 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 mould with the powdered polymer is then secured and placed inside the oven.

2. The heat and fusion phase.
Once inside the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The spinning is done slowly, about 20 rotations per minute. Something that is important at this point is the period of time the mold will spend within the oven. If it stays to long, the product will lose value and durability, generating a poor product. If it is removed from the oven prematurely, the polymer will not have liquefied correctly, which creates bubbles in the finished product line.

3. Mould cooling down.
When the product has completely spent the enough of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which creates a cool mist. When the component cools, it shrinks slightly for ease of removal from the mold. This is one more step that depends a lot on the right timing, since rapid cooling decreases the material too quickly, causing warping of the product.

4. The offloading or de-molding step.
Once the component within te mould has cooled successfully, the person managing the operation can then take out the finalized product from the mold. The technique is repeated from the start, making a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Stockton Springs ME 4981 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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