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

rotomolding-Greenville-Rotational molding pertains to a plastic manufacturing procedure that creates hollow stress-free items. The function relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have many different shapes, sizes and colors. This procedure is also called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The feature that makes this unique from other plastic manufacturing methods that no pressure is called for. It also has few contenders when it comes down to the production of sizable hollow products which are long-lasting and inexpensive.There is a variety of products that are developed by this process including large size water tanks, automobile materials, complex molded medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in regards to design and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Greenville ME 4441, 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 rotocasting 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-Greenville-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 Greenville 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 Rotomolding Process Components

This moulding operation has been used since earlier times for creatingvseverl items. Egyptians for example, utilized rotocasting techniques in the manufacturing of ceramics. The Swiss were also utilizing this rotation technique to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured utilizing this method some time between 1940 and 1950. Due to the fact that it was regarded to be a fairly slow system, the system has however taken long to catch on

1. Mould fitting.
A predetermined amount of polymer in powder form is loaded into a hollow mold. The mould is usually comprised of cast aluminium or sheet steel material. The color tone intended for the final goods 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 style of plastic production.

Preheating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mould with the powdered polymer is then locked and positioned into the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The spinning is done gradually, about 20 rotations per min. The main thing that is vital at this moment is the amount of time the mould will spend within the oven. If it stays to long, the material will lose value and strength, creating a weak item. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which produces bubbles in the finalized item.

3. Mold cooling.
When the product has completely 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 a cool mist. When the component cools, it shrinks somewhat for ease of removal from the mould. This is one more measure that depends a lot on the correct timing, since quick cooling shrinks the material too fast, causing warping of the product.

4. The removing or de-moulding step.
When the material inside te mold has cooled correctly, the molder handling the procedure can then remove the finalized item from the mold. The function is repeated from the start, giving a series of exact product lines.

For more information on the different rotational rotomolding options offered for the Greenville ME 4441 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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