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

rotomolding-Hallowell-Rotational molding refers to a plastic production practice that makes hollow stress-free items. The method uses high temperatures and bi axial rotation to follow up with seamless, one piece objects that have many different shapes, sizes and colors. This procedure is also called roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The component that makes this unique from other plastic manufacturing processes that no pressure is involved. It also has few rivals when it comes to the production of large size hollow products which are long-lasting and inexpensive.There is a wide variety of items that are created by this process including big water tanks, automobile items, intricate designed medical products, leisure equipment, toys, canoes, industrialized equipment among many others.This is due to the flexibility in terms of type and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Hallowell ME 4347, 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-Hallowell-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 Hallowell 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 Components

This moulding operation has been used since earlier times for creatingvseverl products. Egyptians for instance, applied rotational molding procedures in the producing of ceramics. The Swiss were also working with this rotation style to create hollow chocolate eggs. Some plastic items in the USA were manufactured utilizing this procedure some time between 1940 and 1950. The process has however taken long to take affect because it was thought of as being a pretty slow process

1. Mould prep work.
A fixed quantity of polymer in particle form is packed into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel substance. The coloring intended 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 style of plastic engineering.

Preheating 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 mold with the powdered polymer is then secured and placed inside the oven.

2. The heating and fusion process.
Once within the oven, the mould is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 spins per min. One thing that is important at this point is the amount of time the mould will spend inside the oven. If it stays to long, the component will lose stability and durability, creating a faulty product. If it is removed from the oven prematurely, the polymer will not have flowed properly, which generates bubbles in the completed product line.

3. Mould cooling down.
When the material 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 extraction from the mold. This is yet another measure that depends a lot on the right timing, since quick cooling reduces the material too fast, causing bending of the item.

4. The un-loading or de-moulding phase.
When the product inside te mould has cooled correctly, the molder handling the procedure can then take out the finished product from the mould. The function is repeated from the beginning, making a series of exact product lines.

For more information on the different rotational rotomolding options offered for the Hallowell ME 4347 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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