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

rotocasting-Hungry Horse-Rotational molding pertains to a plastic manufacturing method that makes hollow stress-free product lines. The procedure uses 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 called rotomoulding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The feature that makes this different from other plastic manufacturing procedures that no pressure is involved. It also has few rivals when it involves the creation of large size hollow items which are long-lasting and inexpensive.There is a wide range of products that are developed by this process including large size water tanks, automobile products, intricate designed medical items, leisure equipment, toys, canoes, commercial equipment among many others.This is because of the versatility in terms of type and shapes that the process develops

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Hungry Horse MT 59919, 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 Molding-Hungry Horse-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 Hungry Horse 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 Roto-Molding Procedure Components

This molding operation has been used since ancient times for creatingvseverl items. Egyptians for instance, worked with rotational molding techniques in the producing of ceramics. The Swiss were also working with this rotation design to create hollow chocolate eggs. Some plastic product lines in the USA were developed using this technique some time between 1940 and 1950. The system has however taken long to catch on because it was considered to be a rather slow process

1. Mold readying.
A fixed measure of polymer in grain form is packed into a hollow mould. The mould is usually composeded of cast aluminium or sheet steel material. The coloring preferred for the end product 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 engineering.

Pre-heating of the oven starts, and it can 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 up and fusion process.
Once within the oven, the mold is rotated on two axis so the powdered polymer melts from the heat and overlays the inside if the mold. The turning is done slowly and gradually, about 20 rotations per minute. The main thing that is important at this moment is the period of time the mold will spend within the oven. If it stays to long, the material will lose value and durability, creating a poor item. If it is extracted from the oven prematurely, the polymer will not have liquefied properly, which generates bubbles in the completed item.

3. Mold cooling down.
When the material has completely spent the enough 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 slightly for ease of removal from the mould. This is an additional measure that depends a lot on the right timing, since quick cooling decreases the material too fast, causing warping of the product.

4. The discharging or de-moulding phase.
Once the product inside te mould has cooled effectively, the molder managing the operation can then extract the completed product from the mold. The process is repeated from the start, making a number of similar product lines.

For more information on the different rotational rotomolding options offered for the Hungry Horse MT 59919 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 molded

Local Resources

Production Example
Google Map