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

rotational molding-Hartland-Rotational moulding pertains to a plastic production technique that creates hollow stress-free products. The function relies upon high temperatures and bi axial rotation to follow up with seamless, one piece items that have many different designs, colors and sizes. This method is also called rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The feature that makes this unique from other plastic manufacturing techniques because no pressure is involved. It also has few contenders when it comes down to the manufacture of large hollow items which are durable and inexpensive.There is a variety of products that are generated by this process including large size water tanks, automobile materials, complex designed medical products, recreation equipment, toys, kayaks, industrial equipment among many others.This is due to the flexibility in terms of 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 Hartland ME 4943, 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

Custom Molding-Hartland-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 Hartland 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 Procedure Components

This moulding system has been used since earlier times for creatingvseverl product lines. Egyptians as an example, employed rotocasting systems in the manufacturing of ceramics. The Swiss were also utilizing this rotation approach to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured using this approach some time between 1940 and 1950. The technique has however taken long to take affect because it was considered as being a relatively slow-moving process

1. Mould prep work.
A predetermined volume of polymer in particle form is loaded into a hollow mold. The mold is usually made of cast aluminium or sheet steel material. The colour needed for the final 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 style of plastic engineering.

Pre-heating of the oven starts, and it may be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mould with the powdered polymer is then locked and installed inside the oven.

2. The heat and fusion process.
Once within the oven, the mold is spun on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The spinning is done slowly and gradually, about 20 spins per min. The main thing that is crucial at this moment is the amount of time the mould will spend within the oven. If it stays to long, the product will lose value and strength, producing a faulty product. If it is taken out from the oven too early, the polymer will not have liquefied properly, which produces bubbles in the finalized product line.

3. Mould cooling down.
When the product has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the product cools, it shrinks slightly for ease of extraction from the mould. This is an additional procedure that depends a lot on the ideal timing, since quick cooling shrinks the material too quick, causing warping of the item.

4. The discharging or de-molding step.
As soon as the component within te mould has cooled successfully, the person managing the operation can then take out the finished product from the mould. The technique is repeated from the beginning, supplying a series of similar products.

For more information on the different rotational rotomolding options offered for the Hartland ME 4943 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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