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

rotomoulding-Williamston-Rotational molding refers to a plastic manufacturing method that generates hollow stress-free product lines. The function relies upon high temperatures and bi axial rotation to follow up with seamless, one piece objects that have various designs, colors and sizes. This technique is also referred to as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The component that makes this different from other plastic manufacturing processes that no pressure is needed. It also has few rivals when it comes down to the production of large hollow items which are resilient and inexpensive.There is a wide range of products that are developed by this process including large size water tanks, automobile products, intricate shaped medical items, leisure equipment, toys, canoes, industrialized equipment among many others.This is because of the flexibility in terms of type and forms that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Williamston SC 29697, 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 roto-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-Williamston-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 South Carolina 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 Williamston South Carolina 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 molding operation has been used since early times for creatingvseverl products. Egyptians for instance, applied roto-molding techniques in the of ceramics. The Swiss were also using this rotation format to make hollow chocolate eggs. Some plastic products in the USA were manufactured utilizing this procedure some time between 1940 and 1950. The procedure has however taken very long to take affect because it was looked at as being a rather slow process

1. Mold prep work.
A predetermined amount of polymer in grain form is packed into a hollow mold. The mould is usually built from cast aluminium or sheet steel material. The coloration intended 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 design of plastic production.

Preheating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then sealed and put into the oven.

2. The heat and fusion step.
Once inside the oven, the mold is rotated on two axis so the powdered polymer liquefies from the heat and coats the inside if the mould. The turning is done slowly, about 20 revolutions per min. Something that is crucial at this moment is the amount of time the mould will spend inside the oven. If it overstays, the product will lose stability and strength, generating a weak item. If it is removed from the oven too early, the polymer will not have melted correctly, which generates bubbles in the finalized product line.

3. Mould cooling down.
When the component has sufficiently spent the correct amount of time in the oven, it is then extracted 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 shrinks slightly for ease of extraction from the mold. This is an additional step that relies a lot on the correct timing, since quick cooling shrinks the material too rapidly, causing bending of the product.

4. The unloading or de-molding step.
Once the material inside te mould has cooled correctly, the person handling the process can then take out the finalized item from the mold. The procedure is repeated from the start, making a number of identical items.

For more information on the different rotational rotomolding options offered for the Williamston SC 29697 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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