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

rotomoulding-Machias-Rotational moulding refers to a plastic manufacturing procedure that creates hollow stress-free items. The process relies on high temperatures and bi axial rotation to follow up with seamless, one piece products that have different shapes, colors and sizes. This technique is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this different from other plastic manufacturing processes because no pressure is needed. It also has few competitors when it pertains to the creation of sizable hollow products which are resilient and inexpensive.There is a variety of products that are generated by this process including large size water tanks, automobile products, sophisticated shaped medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in terms of type and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Machias ME 4654, 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

Plastic Manufacturing-Machias-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 Machias 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 method has been used since earlier times for creatingvseverl products. Egyptians as an example, used roto-molding solutions in the creating of ceramics. The Swiss were also applying this rotation style to generate hollow chocolate eggs. Some plastic products in the USA were created utilizing this procedure some time between 1940 and 1950. The system has however taken very long to catch on because it was considered to be a moderately slow-moving process

1. Mould prep work.
A fixed volume of polymer in grain form is filled into a hollow mold. The mold is usually made from cast aluminium or sheet steel substance. The color chosen for the end goods is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this style of plastic production.

Pre-heating of the oven follows, and it can 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 placed into the oven.

2. The heating up and fusion step.
Once placed into the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The spinning is done slowly, about 20 rotations per sixty seconds. One thing that is crucial at this moment is the amount of time the mould will spend inside the oven. If it overstays, the material will lose value and durability, producing a faulty product. If it is removed from the oven prematurely, the polymer will not have flowed properly, which develops bubbles in the completed product.

3. Mould cooling.
When the material 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 product cools, it reduces slightly for ease of extraction from the mold. This is another procedure that relies a lot on the correct timing, since rapid cooling reduces the material too fast, causing bending of the item.

4. The discharging or de-moulding step.
As soon as the product within te mold has cooled adequately, the person managing the procedure can then take out the completed product from the mould. The procedure is repeated from the beginning, providing a series of exact products.

For more information on the different rotational rotomolding options offered for the Machias ME 4654 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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