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

rotocasting-Velva-Rotational molding refers to a plastic production solution that generates hollow stress-free items. The process uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have several forms, sizes and colors. This method is also referred to as rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl forms.

The benefit that makes this different from other plastic manufacturing processes in that no pressure is required. It also has few contenders when it involves the manufacture of large size hollow items which are resilient and inexpensive.There is a wide range of product lines that are developed by this process including big water tanks, automobile materials, complex molded medical products, recreation equipment, toys, canoes, industrial equipment among many others.This is due to the versatility in terms of style 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 Velva ND 58790, 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

Plastic Manufacturing-Velva-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 Dakota 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 Velva North Dakota 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 Rotomoulding Process Components

This molding method has been used since earlier times for creatingvseverl items. Egyptians for example, applied rotocasting techniques in the manufacturing of ceramics. The Swiss were also working with this rotation approach to generate hollow chocolate eggs. Some plastic products in the USA were created utilizing this technique some time between 1940 and 1950. The system has however taken long to take affect because it was considered as being a somewhat slow process

1. Mould preparation.
A fixed amount of polymer in particle form is filled into a hollow mould. The mold is usually constructed from cast aluminium or sheet steel material. The color needed for the finished 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 style of plastic manufacturing.

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 mold with the powdered polymer is then locked and placed within the oven.

2. The heating and fusion phase.
Once placed into 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 turning is done slowly and gradually, about 20 revolutions per min. Something that is essential at this moment is the amount of time the mold will spend inside the oven. If it overstays, the product will lose stability and strength, generating a faulty product. If it is taken out from the oven too early, the polymer will not have flowed properly, which creates bubbles in the completed item.

3. Mold cooling.
When the material has completely 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 a cool mist. When the component cools, it reduces somewhat for ease of extraction from the mold. This is an additional measure that depends a lot on the correct timing, since quick cooling decreases the material too fast, causing bending of the material.

4. The offloading or de-moulding step.
When the component inside te mold has cooled successfully, the person taking care of the operation can then remove the completed item from the mould. The process is repeated from the beginning, making a series of identical items.

For more information on the different rotational rotomolding options offered for the Velva ND 58790 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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