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

roto-molding-Guilford-Rotational moulding refers to a plastic production technique that makes hollow stress-free products. The method uses high temperatures and bi axial rotation to follow up with seamless, one piece products that have different shapes, sizes and colors. This method is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The function that makes this unique from other plastic manufacturing techniques because no pressure is needed. It also has few competitors when it involves the production of sizable hollow items which are long-lasting and inexpensive.There is a wide variety of product lines that are developed by this process including large water tanks, automobile materials, intricate shaped medical items, leisure equipment, toys, kayaks, commercial equipment among many others.This is because of the versatility in terms of design and forms that the process creates

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Guilford ME 4443, 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 rotocasting 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-Guilford-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 Guilford 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 in Detail

This molding method has been used since earlier times for creatingvseverl products. Egyptians as an example, worked with rotational molding methods in the making of ceramics. The Swiss were also using this rotation type to make hollow chocolate eggs. Some plastic product lines in the USA were manufactured using this approach some time between 1940 and 1950. The process has however taken very long to take affect because it was thought of to be a somewhat slow process

1. Mould fitting.
A fixed volume of polymer in powder form is packed into a hollow mould. The mould is usually crafted from cast aluminium or sheet steel component. The color tone desired for the finished 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 format of plastic manufacturing.

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 mould with the powdered polymer is then sealed and positioned inside the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mould is spun on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The turning is done slowly and gradually, about 20 revolutions per min. One thing that is vital at this moment is the amount of time the mold will spend within the oven. If it stays to long, the material will lose value and durability, generating a weak product. If it is extracted from the oven prematurely, the polymer will not have melted properly, which creates bubbles in the finalized product line.

3. Mould cooling.
When the component has completely spent the correct amount of time in the oven, it is then removed 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 slightly for ease of extraction from the mold. This is yet another measure that depends a lot on the ideal timing, since rapid cooling decreases the material too quick, causing bending of the product.

4. The offloading or de-moulding step.
As soon as the component inside te mold has cooled properly, the person taking care of the process can then remove the completed item from the mold. The procedure is repeated from the beginning, providing a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Guilford ME 4443 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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