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

rotomoulding-Monmouth-Rotational molding pertains to a plastic production technique that creates hollow stress-free product lines. The function relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have several designs, colors and sizes. This method is also known as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The benefit that makes this unique from other plastic manufacturing techniques because no pressure is involved. It also has few contenders when it involves the production of large size hollow items which are resilient and inexpensive.There is a variety of products that are generated by this process including big water tanks, automobile materials, sophisticated molded medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the versatility in regards to type and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Monmouth ME 4259, 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 Manufacturing-Monmouth-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 Monmouth 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 Method Components

This moulding method has been used since early times for creatingvseverl items. Egyptians for instance, worked with roto-molding systems in the creating of ceramics. The Swiss were also working with this rotation technique to generate hollow chocolate eggs. Some plastic product lines in the USA were created using this technique some time between 1940 and 1950. The process has however taken very long to take affect because it was considered to be a somewhat slow process

1. Mould fitting.
A predetermined amount of polymer in powder form is loaded into a hollow mould. The mould is usually made of cast aluminium or sheet steel material. The colour chosen for the end item 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 type of plastic manufacturing.

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 mould with the powdered polymer is then locked and put within the oven.

2. The heating and fusion step.
Once inside the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The rotation is done slowly, about 20 spins per minute. One thing that is vital at this point is the amount of time the mould will spend within the oven. If it overstays, the material will lose stability and strength, making a weak product. If it is extracted from the oven prematurely, the polymer will not have flowed correctly, which generates bubbles in the completed product.

3. Mould cooling down.
When the component has sufficiently spent the right amount 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 a cool mist. When the product cools, it shrinks a little for ease of removal from the mould. This is another measure that relies a lot on the ideal timing, since rapid cooling shrinks the material too rapidly, causing warping of the material.

4. The discharging or de-moulding phase.
When the component inside te mould has cooled effectively, the molder taking care of the process can then remove the completed product from the mould. The process is repeated from the beginning, giving a series of identical product lines.

For more information on the different rotational rotomolding options offered for the Monmouth ME 4259 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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