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

rotational moulding-Bellingham-Rotational moulding refers to a plastic production method that makes hollow stress-free product lines. The process relies on high temperatures and bi axial rotation to follow up with seamless, one piece items that have varying forms, colors and sizes. This technique is also referred to as roto-molding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The attribute that makes this different from other plastic manufacturing processes in that no pressure is required. It also has few contenders when it pertains to the manufacture of sizable hollow items which are resilient and inexpensive.There is a wide variety of products that are generated by this process including big water tanks, automobile materials, intricate molded medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is because of the flexibility in regards to style and forms that the process manufactures

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Bellingham MN 56212, 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-Bellingham-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 Minnesota 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 Bellingham Minnesota 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 Method Components

This molding system has been used since ancient times for creatingvseverl product lines. Egyptians for example, worked with roto-molding methods in the creating of ceramics. The Swiss were also using this rotation format to create hollow chocolate eggs. Some plastic product lines in the USA were created utilizing this procedure some time between 1940 and 1950. Since it was considered to be a basically slow approach, the technique has however taken long to catch on

1. Mold fitting.
A fixed amount of polymer in grain form is packed into a hollow mold. The mold is usually crafted from cast aluminium or sheet steel substance. The coloration intended for the final product 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 type of plastic engineering.

Pre-heating 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 sealed and positioned within the oven.

2. The heating and fusion phase.
Once inside the oven, the mould is revolved on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done gradually, about 20 revolutions per min. One thing that is critical at this point is the amount of time the mould will spend within the oven. If it overstays, the component will lose stability and durability, creating a faulty item. If it is taken out from the oven prematurely, the polymer will not have flowed properly, which creates bubbles in the completed product.

3. Mould cooling.
When the material has sufficiently spent the enough of time in the oven, it is then taken out for cooling. This may be done by air or water, or sometimes a mixture of both which a cool mist. When the material cools, it reduces somewhat for ease of extraction from the mold. This is one more measure that depends upon a lot on the right timing, since quick cooling decreases the material too fast, causing bending of the item.

4. The discharging or de-molding phase.
Once the material inside te mould has cooled properly, the molder managing the procedure can then extract the completed item from the mould. The procedure is repeated from the start, providing a series of exact product lines.

For more information on the different rotational rotomolding options offered for the Bellingham MN 56212 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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