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

roto-molding-Seal Harbor-Rotational molding refers to a plastic production procedure that makes hollow stress-free products. The function depends on high temperatures and bi axial rotation to come up with seamless, one piece objects that have varying shapes, sizes and colors. This procedure is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this different from other plastic manufacturing processes that no pressure is required. It also has few competitors when it pertains to the production of sizable hollow products which are resilient and inexpensive.There is a wide range of products that are developed by this process including big water tanks, automobile materials, intricate designed medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is due to the flexibility in regards to type and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Seal Harbor ME 4675, 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 Molding-Seal Harbor-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 Seal Harbor 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 Procedure Components

This molding technique has been used since earlier times for creatingvseverl items. Egyptians as an example, employed roto-molding techniques in the of ceramics. The Swiss were also utilizing this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were created using this approach some time between 1940 and 1950. The procedure has however taken very long to take affect because it was considered to be a somewhat slow-moving process

1. Mold prep work.
A predetermined quantity of polymer in powder form is packed into a hollow mould. The mold is usually made from cast aluminium or sheet steel substance. The coloration intended for the finished product 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 engineering.

Preheating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then secured and positioned inside the oven.

2. The heat and fusion step.
Once inside the oven, the mould is turned on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The turning is done slowly and gradually, about 20 rotations per min. The main thing that is essential at this point is the period of time the mould will spend inside the oven. If it overstays, the product will lose stability and durability, producing a weak product. If it is extracted from the oven too early, the polymer will not have melted correctly, which produces bubbles in the completed product line.

3. Mold cooling down.
When the product has sufficiently 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 creates a cool mist. When the component cools, it reduces a little for ease of removal from the mold. This is one more step that depends a lot on the correct timing, since quick cooling shrinks the material too rapidly, causing bending of the product.

4. The discharging or de-moulding phase.
As soon as the material within te mold has cooled effectively, the person taking care of the process can then take out the finished product from the mould. The procedure is repeated from the start, giving a series of exact products.

For more information on the different rotational rotomolding options offered for the Seal Harbor ME 4675 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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