Empty Bottle Testing
Pressure Decay Leak Testing
Even the smallest of container leaks can cause challenges for bottle manufacturers. It becomes an even larger issue if leaks are identified after the containers reach your customer. Testing empty containers for leaks and other defects is the most effective way for bottle manufacturers to ensure product quality.
While vacuum decay testing is a popular testing method for many manufacturers, it is typically not ideal for empty bottles because it may cause them to collapse during the test. Many manufacturers rely on pressure decay testing—an effective and reliable method of inspecting empty containers.
The typical leak tester is installed downstream of the blow molder on the line and uses a three-step process for empty bottle inspection.
Maintaining Accuracy During Empty Container Testing
Several factors determine the length and accuracy of pressure decay tests. Longer tests, for example, typically have higher sensitivity than a short test. Large volume containers also require more test time than a smaller container to detect small leaks. Maintaining a consistent temperature along the production line is also essential; any temperature variations in the product can affect the accuracy of leak tests.
The final and perhaps most crucial factor is the quality of your leak testing equipment. Low-quality leak testers may miss holes on the smaller end of the typical empty container spectrum, which is 0.004” (0.1mm) to 0.020” (0.5mm). When you’re considering the right leak test solution for your containers, consider ALPS. As the leader in empty container leak testing, our products are engineered to exceed customer expectations and ensure container quality.
To learn more about pressure decay leak testing, read our blog, Pressure Decay Leak Test: Why it is ideal for empty container leak testing.
14 of the 15 top blow molders in North America trust ALPS pressure decay testers for their bottle leak testing processes. Our testing solutions are ideal for empty containers of varying sizes, ranging from 3cc eyedroppers to 5-gallon edible oil bottles.
Single Station Linear Leak Testers
ALPS Single Station Linear Leak Testers use pressure decay testing at lower speeds. These machines work with empty containers up to 5 gallons and operate at speeds from being hand fed, and online up to 200 containers per minute, depending on the container size. With indexing conveyor, moving head, and bottle stop designs, our single station Linear leak testers are designed for flexibility and easily integrate with your existing line.
Multi-Station Linear Leak Testers
For medium speed applications, our multi-station linear leak testers use pressure decay testing on 2-8 stations. ALPS Speed-Glider and the ALPS Flex Pitch provide linear, continuous motion leak testing of empty containers at speeds up to 500 containers per minute, depending upon the container size. Our multi-station linear pressure decay leak testing systems can be integrated with your current conveyor system.
Please fill out a form confirming your product details and plastic bottle leak detector requirements.