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

rotomoulding-Spring Hope-Rotational molding refers to a plastic production solution that generates hollow stress-free product lines. The process depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have a variety of shapes, sizes and colors. This method is also known as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The attribute that makes this unique from other plastic manufacturing processes in that no pressure is called for. It also has few competitors when it comes to the manufacture of sizable hollow items which are long lasting and inexpensive.There is a variety of product lines that are developed by this process including big water tanks, automobile products, complex shaped medical products, leisure equipment, toys, kayaks, industrialized equipment among many others.This is because of the versatility in regards to design and shapes that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Spring Hope NC 27882, 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 rotomoulding 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 Molded-Spring Hope-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 Spring Hope 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 Process in Detail

This molding method has been used since ancient times for creatingvseverl products. Egyptians for instance, applied rotomoulding systems in the making of ceramics. The Swiss were also applying this rotation format to make hollow chocolate eggs. Some plastic products in the USA were made using this technique some time between 1940 and 1950. Because it was thought of to be a very slow-moving technique, the approach has however taken long to become popular

1. Mold preparation.
A predetermined quantity of polymer in grain form is packed into a hollow mould. The mould is usually made of cast aluminium or sheet steel material. The color intended for the end 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 assembly.

Preheating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then secured and inserted into the oven.

2. The heating and fusion phase.
Once within the oven, the mould is spun on two axis so the powdered polymer melts from the heat and layers the inside if the mould. The rotation is done slowly and gradually, about 20 revolutions per min. Something that is essential at this point is the amount of time the mould will spend within the oven. If it stays to long, the product will lose stability and strength, producing a faulty product. If it is removed from the oven too early, the polymer will not have melted properly, 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 extracted 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 a little for ease of extraction from the mould. This is yet another measure that relies a lot on the correct timing, since rapid cooling decreases the material too rapidly, causing warping of the product.

4. The offloading or de-moulding phase.
As soon as the material within te mould has cooled successfully, the person handling the process can then extract the completed item from the mold. The function is repeated from the beginning, supplying a series of similar products.

For more information on the different rotational rotomolding options offered for the Spring Hope NC 27882 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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