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

rotocasting-Shirley Mills-Rotational molding pertains to a plastic manufacturing practice that makes hollow stress-free products. The procedure relies upon high temperatures and bi axial rotation to come up with seamless, one piece items that have a wide range of shapes, colors and sizes. This method is also known as rotomoulding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this unique from other plastic manufacturing methods because no pressure is needed. It also has few rivals when it pertains to the manufacture of large size hollow items which are durable and inexpensive.There is a wide variety of items that are produced by this process including big water tanks, automobile products, complex shaped medical items, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in regards to design and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Shirley Mills ME 4485, 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

Plastic Molding-Shirley Mills-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 Shirley Mills 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 molding system has been used since early times for creatingvseverl products. Egyptians as an example, worked with rotational molding solutions in the manufacturing of ceramics. The Swiss were also applying this rotation format to make hollow chocolate eggs. Some plastic products in the USA were made using this approach some time between 1940 and 1950. The system has however taken very long to take affect because it was looked at as being a pretty slow-moving process

1. Mold prep work.
A fixed amount of polymer in powder form is filled into a hollow mold. The mould is usually made of cast aluminium or sheet steel material. The coloration needed for the final goods is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic manufacturing.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mold with the powdered polymer is then sealed and placed within the oven.

2. The heating up and fusion procedure.
Once inside 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 revolutions per min. Something that is vital at this point is the amount of time the mould will spend inside the oven. If it overstays, the material will lose value and strength, producing a poor item. If it is taken out from the oven too early, the polymer will not have liquefied properly, which produces bubbles in the finished product line.

3. Mold cooling.
When the material has completely spent the correct amount of time in the oven, it is then extracted 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 shrinks slightly for ease of removal from the mold. This is one more procedure that relies a lot on the ideal timing, since rapid cooling reduces the material too fast, causing warping of the item.

4. The unloading or de-moulding step.
Once the component inside te mold has cooled effectively, the person managing the procedure can then take out the finalized item from the mold. The process is repeated from the beginning, supplying a series of exact items.

For more information on the different rotational rotomolding options offered for the Shirley Mills ME 4485 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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