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

rotomolding-Belhaven-Rotational molding refers to a plastic manufacturing procedure that makes hollow stress-free product lines. The method uses high temperatures and bi axial rotation to follow up with seamless, one piece items that have several shapes, colors and sizes. This procedure is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this unique from other plastic manufacturing techniques that no pressure is required. It also has few competitors when it comes to the creation of large size hollow items which are durable and inexpensive.There is a wide variety of products that are produced by this process including big water tanks, automobile materials, complex molded medical items, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the flexibility in regards to type and shapes that the process makes

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Belhaven NC 27810, 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 Manufacturing-Belhaven-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 North 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 Belhaven North 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 Rotomolding Procedure in Detail

This moulding process has been used since early times for creatingvseverl items. Egyptians for instance, worked with rotocasting solutions in the creating of ceramics. The Swiss were also employing this rotation approach to create hollow chocolate eggs. Some plastic product lines in the USA were developed using this technique some time between 1940 and 1950. The procedure has however taken very long to catch on because it was considered to be a relatively slow-moving process

1. Mold prep work.
A fixed measure of polymer in particle form is packed into a hollow mould. The mold is usually comprised of cast aluminium or sheet steel component. The colour needed for the end item is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this type of plastic assembly.

Pre-heating 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 inserted within the oven.

2. The heating and fusion process.
Once placed into the oven, the mold is turned on two axis so the powdered polymer melts from the heat and coats the inside if the mould. The turning is done slowly, about 20 rotations per min. One thing that is essential at this moment is the amount of time the mold will spend within the oven. If it overstays, the product will lose stability and durability, producing a weak product. If it is removed from the oven prematurely, the polymer will not have flowed correctly, which produces bubbles in the completed product line.

3. Mould cooling.
When the material has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which generates a cool mist. When the material cools, it reduces somewhat for ease of extraction from the mould. This is another step that depends upon a lot on the right timing, since rapid cooling reduces the material too quick, causing warping of the product.

4. The offloading or de-moulding phase.
Once the product inside te mould has cooled successfully, the molder taking care of the procedure can then extract the finished product from the mold. The procedure is repeated from the beginning, making a number of similar items.

For more information on the different rotational rotomolding options offered for the Belhaven NC 27810 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

Other areas we service, go here to plastic molding

Local Resources

Production Example
Google Map