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

rotational molding-Tappen-Rotational moulding refers to a plastic manufacturing method that produces hollow stress-free products. The procedure relies on high temperatures and bi axial rotation to follow up with seamless, one piece products that have several shapes, colors and sizes. This method is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl styles.

The attribute that makes this unique from other plastic manufacturing processes that no pressure is required. It also has few contenders when it pertains to the creation of large hollow products which are durable and inexpensive.There is a variety of items that are created by this process including big water tanks, automobile products, complex designed medical items, leisure equipment, toys, canoes, industrial equipment among many others.This is because of 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 Tappen ND 58487, 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 Products-Tappen-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 Tappen 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 Procedure in Detail

This molding technique has been used since early times for creatingvseverl items. Egyptians as an example, worked with rotational molding systems in the making of ceramics. The Swiss were also working with this rotation design to make hollow chocolate eggs. Some plastic products in the USA were developed using this technique some time between 1940 and 1950. Considering that it was looked at to be a relatively slow technique, the system has however taken long to become popular

1. Mold readying.
A fixed volume of polymer in particle form is packed into a hollow mould. The mold is usually built from cast aluminium or sheet steel material. The coloring wanted for the final goods 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 production.

Pre-heating of the oven starts, and it can be done by either conduction, convection or sometimes radiation. It is heated to temperatures between 500-700F. The mold with the powdered polymer is then secured and installed inside the oven.

2. The heating and fusion process.
Once inside the oven, the mould is rotated on two axis so the powdered polymer liquefies from the heat and overlays the inside if the mold. The spinning is done slowly, about 20 revolutions per minute. The main thing that is vital at this point is the amount of time the mold will spend within the oven. If it stays to long, the material will lose stability and strength, producing a poor item. If it is taken out from the oven too early, the polymer will not have melted properly, which generates bubbles in the finished item.

3. Mould cooling down.
When the component has sufficiently spent the correct amount of time in the oven, it is then removed 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 a little for ease of extraction from the mold. This is yet another measure that depends a lot on the correct timing, since rapid cooling shrinks the material too quick, causing bending of the material.

4. The discharging or de-molding step.
When the material inside te mold has cooled correctly, the molder handling the procedure can then remove the finished product from the mould. The technique is repeated from the beginning, making a series of similar product lines.

For more information on the different rotational rotomolding options offered for the Tappen ND 58487 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 custom molding

Local Resources

Production Example
Google Map