News & Resources
ACRN News
Cosmetic Tube Weld Testing: The Frequency-Based Test Method in Production
A shampoo tube leaking on the shelf, a pharmaceutical cream tube whose tail splits open at the first squeeze, a food condiment tube weeping in transit: in all three cases, the defect comes from a poorly controlled weld that should have been caught before the product...
Child-Resistant Caps: Why the Test Requires Measuring Both Torque and Angle
A child-resistant cap rests on a mechanical paradox: it must resist a child under 52 months while remaining easy to open for a senior adult. This trade-off plays out in a two-step mechanism whose compliance cannot be verified with a simple torque measurement. Two...
Breakaway Torque and Opening Torque: How the SkillTork+ Measures Both in a Single Test
On a tamper-evident cap (with a tamper-evident ring), opening the cap generates two successive torque peaks: the torque required to break the ring, followed by the torque required to rotate the cap. Virtually all the relationship meters on the market measure just one....
Cap Torque Testing Standards: How to Measure and Control Tightening Torque
Cap torque testing standards define how manufacturers should measure and control this critical parameter. In the packaging industry, the tightening torque of a cap is one of the most critical quality parameters—and yet one of the most overlooked. A cap that is not...
How to Choose Your Leak Testing Equipment? The Complete Guide
Packaging leak-tightness is often the last thing you think about… until the day a product leaks, gets contaminated, or fails quality control. In the cosmetic, pharmaceutical, food & beverage, and chemical packaging industries, ensuring packaging integrity is not...
How can you detect a micro leak in a bottle or tube that is invisible to the naked eye?
In the cosmetic, pharmaceutical, and food packaging sectors, the tightness of packaging plays a fundamental role in the quality and safety of the final product. A bottle or tube may appear to be perfectly compliant during a visual inspection, yet have a micro leak...
A new standard for leak testing in the packaging industry: AgileakFlow
In many industries such as cosmetics, pharmaceuticals, food processing, and chemicals, checking the tightness of packaging is an essential step in ensuring the quality of the final product. ACRN, the French test equipment specialist, is expanding its range with an...
Peel test: weld strength test
Introduction In the world of packaging, the reliability of welds is a key factor. A fragile or poorly executed weld can have serious consequences: product leakage, loss of tightness, contamination, or even the recall of entire batches. To avoid these risks,...
Torquemeter: what’s it for? Torque measurement guide
In the industrial, automotive and research sectors, precision is paramount. When assembling components with screws or bolts, it's essential to control the force applied. This is where an often overlooked but indispensable tool comes into play: the torquemeter. Also...