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

rotomolding-Machiasport-Rotational moulding pertains to a plastic production procedure that makes hollow stress-free products. The procedure uses high temperatures and bi axial rotation to come up with seamless, one piece items that have various shapes, colors and sizes. This technique is also called rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The function that makes this different from other plastic manufacturing processes that no pressure is involved. It also has few rivals when it pertains to the creation of large hollow items which are long-lasting and inexpensive.There is a wide variety of items that are created by this process including large size water tanks, automobile items, intricate molded medical products, recreation equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in regards to design and shapes that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Machiasport ME 4655, 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

Custom Molding-Machiasport-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 Machiasport 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 Method Components

This molding operation has been used since ancient times for creatingvseverl product lines. Egyptians as an example, applied rotational molding solutions in the creating of ceramics. The Swiss were also working with this rotation design to create hollow chocolate eggs. Some plastic products in the USA were manufactured using this approach some time between 1940 and 1950. Since it was regarded to be a somewhat slow technique, the system has however taken long to catch on

1. Mould prep work.
A fixed quantity of polymer in particle form is filled into a hollow mold. The mould is usually made of cast aluminium or sheet steel component. The coloration desired for the end item is pre compounded into the polymer. The most typically used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic assembly.

Preheating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mould with the powdered polymer is then locked and put within the oven.

2. The heating up and fusion process.
Once within the oven, the mould is spun on two axis so the powdered polymer melts from the heat and overlays the inside if the mould. The rotation is done slowly and gradually, about 20 revolutions per min. One thing that is vital at this moment is the period of time the mold will spend inside the oven. If it stays to long, the material will lose stability and strength, making a weak item. If it is extracted from the oven prematurely, the polymer will not have melted correctly, which generates bubbles in the finished item.

3. Mould cooling.
When the component has sufficiently 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 product cools, it shrinks a little for ease of removal from the mold. This is yet another step that depends a lot on the right timing, since quick cooling reduces the material too rapidly, causing bending of the product.

4. The unloading or de-moulding phase.
As soon as the component within te mould has cooled effectively, the person managing the operation can then remove the finalized item from the mold. The process is repeated from the start, providing a number of exact items.

For more information on the different rotational rotomolding options offered for the Machiasport ME 4655 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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