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

rotational moulding-Belfast-Rotational moulding refers to a plastic production technique that creates hollow stress-free product lines. The process depends on high temperatures and bi axial rotation to come up with seamless, one piece products that have varying forms, colors and sizes. This method is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The feature that makes this different from other plastic manufacturing methods because no pressure is called for. It also has few contenders when it comes down to the creation of large size hollow items which are durable and inexpensive.There is a wide range of product lines that are produced by this process including large size water tanks, automobile items, complex molded medical items, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the flexibility in regards to style and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Belfast TN 37019, 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 rotomolding 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-Belfast-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 Belfast 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 Procedure Components

This molding operation has been used since early times for creatingvseverl product lines. Egyptians for instance, used rotomoulding procedures in the producing of ceramics. The Swiss were also utilizing this rotation method to make hollow chocolate eggs. Some plastic items in the USA were created using this technique some time between 1940 and 1950. Considering that it was looked at to be a basically slow-moving approach, the process has however taken long to catch on

1. Mould fitting.
A predetermined amount of polymer in particle form is filled into a hollow mold. The mould is usually built from cast aluminium or sheet steel material. The coloring desired 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 format of plastic assembly.

Preheating 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 mould with the powdered polymer is then locked and placed inside the oven.

2. The heating and fusion procedure.
Once placed into the oven, the mould is turned on two axis so the powdered polymer liquefies from the heat and layers the inside if the mold. The turning is done slowly and gradually, about 20 spins per min. The main thing that is important at this point is the amount of time the mould will spend within the oven. If it overstays, the component will lose stability and durability, producing a poor item. If it is removed from the oven prematurely, the polymer will not have flowed correctly, which generates bubbles in the finalized product.

3. Mold cooling.
When the material has completely spent the right 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 a cool mist. When the material cools, it reduces slightly for ease of removal from the mold. This is one more procedure that relies a lot on the ideal timing, since quick cooling decreases the material too fast, causing bending of the material.

4. The removing or de-moulding step.
Once the material within te mould has cooled properly, the molder taking care of the operation can then extract the finished item from the mould. The technique is repeated from the start, giving a number of identical products.

For more information on the different rotational molding options offered for the Belfast TN 37019 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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