A vaccine vial leaves the filling line, travels by truck, and arrives with a thin film of liquid on its shoulder. The cap is tight, but the inner seal never bonded. Heat induction sealing prevents th...

A filling line running 200 vials per minute stops suddenly. Every cap in the last batch has a loose foil liner, and the leak test fails. The culprit is rarely the cap itself. Nine times out of ten, t...

A filled HDPE bottle leaves the filling line with a cap torqued to spec. It passes under an induction sealer, and seconds later the foil inside the cap should be bonded to the bottle lip. If the line...

A bottle of oral liquid sits on a kitchen counter at seven in the morning. A grandmother with stiff hands needs it open before breakfast, and a three year old who has just learned to climb needs it t...

Start with the conclusion. Child resistant packaging is not about making a bottle harder to open. It is a performance claim that has to be proven twice over: most young children must fail to open the...

Imagine a production manager at a pharmaceutical plant receiving a quality alert two days after a batch is shipped. An independent re-test of the oral liquid bottle caps shows that 40 percent of chil...

When a pharmaceutical vial fails its leak test, the first component inspectors often check is not the glass, stopper, or crimp, but the cap liner and seal combination. Cap liners and seals create the...

You hold a 2 oz bottle of acrylic paint, and the stock cap does not give you the control you want. A search for a replacement dispenser returns a long list of caps marked 38/400. That code is not a b...

Put a 24 mm cap on a 24 mm bottle and the closure can still leak, because the number molded on top of a cap is only half of the specification. The short answer is that a closure size combines a nomin...