food, pharmaceutical, and medical packaging<\/strong>.<\/p>\nBubble Emission Test: Principle and Equipment<\/h2>\n
Bu kabarc\u0131k emisyon testi<\/strong> relies on visual detection of air escaping from a submerged package under vacuum pressure. The necessary equipment includes:<\/p>\n\n- Vacuum Chamber<\/strong>: A transparent, vacuum-tight container with an inlet\/outlet valve and a vacuum gauge.<\/li>\n
- Test Fluid<\/strong>: Usually water<\/strong> or a surfactant solution.<\/li>\n
- Specimens<\/strong>: Flexible packaging with or without contents.<\/li>\n<\/ul>\n
Bubble Leak Test Procedure<\/h2>\n
Bu kabarc\u0131k s\u0131z\u0131nt\u0131 testi prosed\u00fcr\u00fc<\/strong> follows these steps:<\/p>\n\n- Haz\u0131rl\u0131k<\/strong>: Ensure the test specimen and fluid are at room temperature<\/strong>.<\/li>\n
- Submersion<\/strong>: Place the specimen in the vacuum chamber and fully submerge<\/strong> it in test fluid (at least 1 inch\/25 mm<\/strong> of coverage).<\/li>\n
- Vacuum Application<\/strong>:\n
\n- Seal the chamber and slowly apply vacuum<\/strong> at approximately 1 in. Hg\/s<\/strong>.<\/li>\n
- Observe for continuous bubbling<\/strong>, which indicates a leak.<\/li>\n<\/ul>\n<\/li>\n
- Hold and Observation<\/strong>:\n
\n- Maintain vacuum for at least 30 seconds<\/strong>.<\/li>\n
- Check for fluid ingress<\/strong> inside the package.<\/li>\n<\/ul>\n<\/li>\n
- Release and Examination<\/strong>: Remove the vacuum, retrieve the specimen, and inspect for test fluid inside.<\/li>\n<\/ol>\n