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

rotomolding-Brooklin-Rotational molding refers to a plastic manufacturing procedure that produces hollow stress-free product lines. The method uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have a wide range of forms, 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 called for. It also has few contenders when it comes down to the manufacture of sizable hollow items which are resilient and inexpensive.There is a wide variety of product lines that are developed by this process including large water tanks, automobile items, intricate designed medical items, leisure equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in regards to style 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 Brooklin ME 4616, 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 moulding 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 Products-Brooklin-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 Brooklin 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 in Detail

This moulding procedure has been used since earlier times for creatingvseverl products. Egyptians for example, utilized rotomoulding techniques in the making of ceramics. The Swiss were also making use of this rotation approach to create hollow chocolate eggs. Some plastic products in the USA were made utilizing this procedure some time between 1940 and 1950. Since it was viewed to be a relatively slow-moving system, the system has however taken long to become popular

1. Mold readying.
A fixed volume of polymer in powder form is loaded into a hollow mould. The mould is usually constructed from cast aluminium or sheet steel material. The color needed for the finished goods 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 assembly.

Pre-heating of the oven starts, and it may 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 sealed and put within the oven.

2. The heating up and fusion process.
Once inside the oven, the mold is turned on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The turning is done gradually, about 20 spins per sixty seconds. The main thing that is important at this point is the amount of time the mold will spend within the oven. If it stays to long, the component will lose stability and strength, generating a faulty product. If it is removed from the oven too early, the polymer will not have melted properly, which creates bubbles in the finalized product line.

3. Mould 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 generates a cool mist. When the material cools, it reduces somewhat for ease of extraction from the mould. This is one more step that relies a lot on the right timing, since rapid cooling reduces the material too quickly, causing bending of the item.

4. The discharging or de-molding step.
Once the material within te mould has cooled successfully, the person taking care of the operation can then extract the finished item from the mould. The function is repeated from the beginning, giving a number of identical items.

For more information on the different rotational rotomolding options offered for the Brooklin ME 4616 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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