Seal Integrity Assessment of Coffee Bags during production Runs

Coffee is one of the most popular refreshment drinks of the world. There seems to be no end to its popularity growth. If you are a coffee processor, manufacturer, or packager, it is imperative for you to test the seal integrity of your coffee bags. The main reason is that improperly sealed coffee bags are at risk of mold development. Another reason is that a fault seal can cause the coffee to become stale.

Fortunately, there is a simple way to test for heat seal quality of your coffee bags by using a Bubble Leak Tester. This is a simple seal integrity testing unit that will allow you to perform a dry test and a wet test. The dry test is performed by pulling a vacuum and watching the coffee bags inflate. If the bag explodes, you may have a weak seal. The wet test is performed by dunking the coffee bags underwater, pulling a vacuum, and looking for bubbles emitting from the test specimen. If you observe bubbles, you have a leak.

This chamber size of the system is 12 inches diameter and 15 inch high. The vacuum pump is an Oil Free Gast Vacuum Pump capable of pulling about 22 inHg of Vacuum – this is enough in most cases to perform a dry or wet package leak test. Below the chamber is a drain valve which will enable you to drain the water from your tank without having to tip it. Next to the chamber is a Vacuum Pump that does not require much maintenance since it is oil free. This is a complete system, it is fully setup and ready to go all you need is to plug the vacuum pump in and just add water to start bubble leak testing.

Are you packaging Coffee Bags, Tea Bags, or other types of consumable products? If you are, Get in Touch with us to find out how you can produce the highest quality heat seals.

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Force Decay Leak Testing Systems
Force Decay Leak Testing Systems are instruments that detect and quantify leaks in a test specimen through measuring the drop in force an inflated specimen applied onto a pressure transducer. The specimen is placed into a vacuum chamber, a vacuum is pulled, and the test sample inflates. As the test sample inflates, it applied a specific force onto the force transducer. This force is measured and recorded over time. If a leak exists, the specimen will deflate and lose pressure, as a result, the force it applies onto the force transducer will decrease. This in turn will enable for detection and quantification of a leak in the specimen.
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A Digital Vacuum Gauge is an instrument which precisely measures a vacuum level inside a vacuum chamber. Unlike a rough dial vacuum gauge, which shows only where the vacuum chamber is roughly with an error of up to 3% (a high as 1 inHg) a digital vacuum gauge will show vacuum levels up to 3 significant figure in Torr and millitorr – this makes the digital vacuum gauge ten thousand times more accurate than the dial vacuum gauge.
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