1. Know your closure. The tip we heard the most, from both suppliers and end users, was that you must understand the tolerance of the closure itself and then marry the material tolerance to the machine tolerance. You must completely understand all the... more1. Know your closure. The tip we heard the most, from both suppliers and end users, was that you must understand the tolerance of the closure itself and then marry the material tolerance to the machine tolerance. You must completely understand all the geometry, tolerances, and measurements of your closures before you order a machine. For example: What sort of pressure does a snap-on closure take? With a screw-top closure, you might be able to use 20 times more force, but how many times do you have to rotate it? Often, packagers don’t take into account the type of closure and balance the application torque and removal torque required by the consumer. Induction sealers add another variable, as they may loosen caps, requiring the addition of a retorquer. Additionally, every closure has a decay time on the removal torque; you need to know the decay time, because it may loosen on the shelf. Know this information and share it with your supplier.
2. Consider both the consumer and the cap manufacturing... less