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

rotational molding-Sand Coulee-Rotational moulding refers to a plastic production procedure that makes hollow stress-free products. The technique uses high temperatures and bi axial rotation to come up with seamless, one piece objects that have several designs, colors and sizes. This procedure is also known as roto-molding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl types.

The feature that makes this unique from other plastic manufacturing procedures because no pressure is required. It also has few rivals when it involves the manufacture of large size hollow items which are long-lasting and inexpensive.There is a wide variety of items that are developed by this process including large size water tanks, automobile items, intricate shaped medical products, leisure equipment, toys, kayaks, commercial equipment among many others.This is due to the versatility 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 Sand Coulee MT 59472, 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

Custom Molded-Sand Coulee-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 Montana 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 Sand Coulee Montana 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 Components

This moulding process has been used since earlier times for creatingvseverl product lines. Egyptians for example, applied roto-molding systems in the producing of ceramics. The Swiss were also making use of this rotation technique to create hollow chocolate eggs. Some plastic products in the USA were made using this approach some time between 1940 and 1950. Given that it was considered to be a somewhat slow-moving approach, the system has however taken long to catch on

1. Mould prep work.
A predetermined quantity of polymer in powder form is filled into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel substance. The coloring wanted for the finished item is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this design of plastic manufacturing.

Pre-heating of the oven follows, and it may 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 secured and placed within the oven.

2. The heat and fusion procedure.
Once placed into the oven, the mould is spun on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The spinning is done gradually, about 20 spins per minute. The main thing that is important at this point is the period of time the mold will spend within the oven. If it stays to long, the product will lose stability and durability, producing a faulty product. If it is removed from the oven too early, the polymer will not have liquefied correctly, which produces bubbles in the finalized product line.

3. Mould cooling down.
When the product has sufficiently spent the enough 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 product cools, it shrinks a little for ease of removal from the mold. This is another procedure that depends a lot on the right timing, since rapid cooling shrinks the material too quickly, causing bending of the product.

4. The discharging or de-moulding step.
When the material within te mold has cooled effectively, the molder handling the process can then take out the finished item from the mould. The process is repeated from the beginning, giving a series of identical products.

For more information on the different rotational rotomolding options offered for the Sand Coulee MT 59472 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