The pattern of local contact pressure across the surfaces brought together during sealing.
Also called: seal-jaw pressure distribution; sealing contact-pressure map; seal pressure mapping.
Can the correct force still produce uneven contact?
Yes. Total closing force does not describe its distribution across the sealing surface. Weak local contact can coexist with an apparently adequate average. Distinguish pneumatic supply pressure, total force and local material contact pressure rather than treating a control setpoint as a pressure map.
A force divided by nominal area gives an average, not the location of low-contact regions. For a multi-pocket blister tool, identify which sealing lands the map represents and how the tool was supported. The question is where contact occurs under the specified test arrangement, rather than whether one average number matches a setting.
No. It characterizes contact pressure under the measurement conditions. Pressure-sensitive films have specified working ranges and environmental conditions; electronic sensor maps use a different sensing arrangement. The media are not automatically interchangeable, and a room-temperature map does not establish pressure during a hot dynamic sealing cycle.
Record sensor or film type, range, environment and loading arrangement, and compare like conditions before and after a change. Then assess the actual seal and intact package with the appropriate methods. An even-looking map is useful process evidence, but it does not itself show coating activation, bond strength or absence of a channel leak.