How Much Flexibility Do Reaction Injection Molding (RIM) Products Offer?

When you’re on a tight schedule and need a reaction injection molding product (RIM) on a particular date, RIM flexibility will help your company to get what it needs quickly and efficiently. Reaction injection molding may seem to be a fast and simple process, with two reactive components injected into a mix head and then fed into a mold, yet specific processes initiated by the manufacturer can make a difference on delivery. There are details that a manufacturer may establish to ensure this flexibility, including the use of aluminum or other metal molds (hard tooling), having more than one press, and the ability to provide third string color. These advantages will ensure that the manufacturer can be flexible and provide your product when needed.

Hard Tooling

Hard tooling means that the molds for the reaction injection molding product will be made of a metal such as hardened steel, beryllium copper alloy or aluminum instead of an epoxy, fiberglass or silicone. In the past, injection molding dies were expensive to manufacture, although they would last for production of more items. While all of the various options in tooling can be effective, the harder tooling molds are made of metal.

The engineering group of the manufacturer can recommend the best process for the product being developed. Aluminum or steel provide the excellent results for reaction injection molding and are extremely economical for large part and low production quantities. The better heat dissipation of aluminum makes it a quicker process from the time the mold is filled and it’s opened and the new merchandise is released.

Press Capacity Affects RIM Flexibility

RIM flexibility can also be influenced by the capacity of the presses to allow the reactive materials to flow through the production process. A larger press can be capable of dispensing 360 pounds of material per minute, with a smaller press capable of dispensing about 140 pounds per minute. It will depend on the size and quantity of the item being produced as to which press will be used, but the speed at which the parts can be produced is a factor in getting your product when you want it.

Third String Color

While color may not be critical in obtaining a product, the process by which it is added to the press can make a difference. RIM flexibility is affected by how quickly a manufacturer can switch out the color for the process. Third string color additions means that the color is added at the mix head, resulting in a press clean out at that part of the press only, as opposed to cleaning out the entire chamber before production of another product. Raw materials are purchased by some RIM manufacturers with the color added just as it enters the mix head and then injected into the mold cavity.

When shopping for a RIM manufacturer with excellent reaction injection molding flexibility, inquire about the tooling, press capacity and color mixing techniques to ensure you can have your product when you need it.


Post time: 12-15-2016