This case study describes how a Uniflow Model 4230 helped Cascade Windows improve the efficiency of their hot melt butyl application.
HOT MELT DRUM UNLOADER EQUIPMENT MANUFACTURING
Uniflow drum unloaders pump high viscosity hot melts at higher rates than competing machines – a lot faster. This is achieved with a unique platen that has nearly double the heat transfer area of other platens, leading to higher melt rates.
Benefits realized by using a Uniflow hot melt drum unloader include:
- Dramatically lower material waste
- Faster drum changeovers
- Low maintenance costs
- Safe operation
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PUMPING BUTYL HOT MELT OFFERS UNIQUE CHALLENGES
Butyl hot melt is an important component of insulated glass window assemblies. Besides providing excellent adhesion, it has an exceptionally low moisture vapor transmission rate. This is a key factor in producing quality windows that stay sealed for a very long time.
However, Butyl is a thick material that’s very difficult to pump. Even when heated to 190°C (374°F), its viscosity is over 275,000 centipoise. (For comparison, maple syrup at room temperature is around 175 centipoise.) In addition, butyl sometimes has air bubbles in the body of the material in the drum.
HIGHER PERFORMANCE ALL ROUND FROM THE MODEL 4230
Cascade Windows was very familiar with hot melt drum unloaders, as they used both Uniflow and competing drum unloaders throughout their plant. Unlike competing machines, Uniflow drum unloaders did not have to be stopped and purged when they encountered an air bubble. Uniflow left 90 – 95% less hot melt at the bottom of the drum, thereby saving them thousands of dollars. Also, they liked the reliability of Uniflow and the support provided by IMMCO. For all of these reasons, when they needed a new machine they came to us.
We explained that our new model 4230 hot melt unloader was a fraction of the cost of their existing Model 230 Uniflows, but it could still pump hot melt butyl at 300 PPH (pounds per hour.) In addition, the Model 4230 could pump through any bubbles, which avoided the stoppages and downtime.
Lastly, like their existing Uniflow machines, the Model 4230 could almost empty the drum. In comparison, competing machines left 25 – 40 pounds at the bottom.
Cascade Windows was also able to enjoy some of the standard features we developed for the insulated glass industry, as well as options that are available on all new Uniflow machines. These included:
- A proprietary heated hose that resists fatigue and lasts longer than competing products
- A handgun machined from a solid block of aluminum for increased strength and reliability
- A semi-automatic bleed/boost function controlled from the touchscreen for faster and safer drum changeover