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

rotomoulding-Ashland City-Rotational moulding refers to a plastic production procedure that makes hollow stress-free products. The function uses high temperatures and bi axial rotation to follow up with seamless, one piece products that have many different designs, colors and sizes. This procedure is also called roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The function that makes this unique from other plastic manufacturing techniques because 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 variety of product lines that are developed by this process including large water tanks, automobile products, intricate shaped medical items, leisure equipment, toys, kayaks, industrial equipment among many others.This is because of the flexibility in terms of design and forms that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Ashland City TN 37015, 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 Manufacturing-Ashland City-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 Tennessee 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 Ashland City Tennessee 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 Roto-Molding Process Components

This moulding technique has been used since earlier times for creatingvseverl product lines. Egyptians as an example, worked with rotational molding methods in the manufacturing of ceramics. The Swiss were also utilizing this rotation type to make hollow chocolate eggs. Some plastic items in the USA were created utilizing this technique some time between 1940 and 1950. The system has however taken very long to catch on because it was considered as being a rather slow process

1. Mold prep work.
A fixed quantity of polymer in particle form is packed into a hollow mould. The mold is usually composeded of cast aluminium or sheet steel component. The coloring needed for the finished goods 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 production.

Preheating of the oven follows, 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 sealed and inserted inside the oven.

2. The heat and fusion phase.
Once within the oven, the mold is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mould. The rotation is done slowly and gradually, about 20 revolutions per sixty seconds. Something that is crucial at this moment is the amount of time the mould will spend within the oven. If it overstays, the material will lose value and strength, generating a weak item. If it is removed from the oven prematurely, the polymer will not have melted correctly, which creates bubbles in the finished product line.

3. Mold cooling.
When the component has sufficiently spent the enough 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 creates a cool mist. When the material cools, it reduces a little for ease of extraction from the mould. This is an additional procedure that relies a lot on the correct timing, since quick cooling reduces the material too rapidly, causing bending of the item.

4. The offloading or de-moulding phase.
When the material inside te mold has cooled adequately, the molder handling the procedure can then take out the finalized product from the mold. The process is repeated from the start, making a number of similar products.

For more information on the different rotational molding options offered for the Ashland City TN 37015 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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