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

rotational molding-New Portland-Rotational molding refers to a plastic manufacturing procedure that makes hollow stress-free items. The process relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have many different designs, sizes and colors. This technique is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this unique from other plastic manufacturing processes because no pressure is needed. It also has few rivals when it pertains to the production of sizable hollow products which are durable and inexpensive.There is a variety of products that are produced by this process including big water tanks, automobile items, intricate shaped medical items, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility 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 New Portland ME 4954, 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 roto-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 Molding-New Portland-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 New Portland 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 molding process has been used since earlier times for creatingvseverl product lines. Egyptians as an example, applied roto-molding methods in the manufacturing of ceramics. The Swiss were also applying this rotation method to generate hollow chocolate eggs. Some plastic products in the USA were manufactured using this procedure some time between 1940 and 1950. Since it was regarded to be a relatively slow-moving method, the procedure has however taken long to become popular

1. Mold preparation.
A fixed measure of polymer in particle form is packed into a hollow mould. The mold is usually composeded of cast aluminium or sheet steel substance. The colour chosen for the finished item 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 engineering.

Pre-heating of the oven follows, 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 sealed and installed into the oven.

2. The heat and fusion phase.
Once inside the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mould. The rotation is done slowly and gradually, about 20 rotations per minute. Something that is essential at this moment is the period of time the mold will spend inside the oven. If it stays to long, the material will lose value and durability, making a weak product. If it is extracted from the oven too early, the polymer will not have melted correctly, which creates bubbles in the completed product.

3. Mold cooling.
When the component has completely spent the right amount of time in the oven, it is then removed for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the component cools, it shrinks slightly for ease of removal from the mould. This is an additional step that relies a lot on the correct timing, since rapid cooling shrinks the material too fast, causing bending of the product.

4. The discharging or de-molding step.
When the product inside te mold has cooled effectively, the person taking care of the process can then take out the finalized product from the mold. The function is repeated from the start, giving a series of identical products.

For more information on the different rotational rotomolding options offered for the New Portland ME 4954 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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