Pregis AIRSPEED 5000, Safety, Operation And Maintenance Manual

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An upper and lower Teflon sealing belt are each
routed around a set of guide rollers, a spring-loaded
tensioning roller, and nip rubber rollers. Film is
pulled from the roll by the infeed and outfeed nips.
See Figure 2.
The film is captured between the upper and lower
sealing belts as it travels through the sealing sec-
tion. The sealing head assembly is spring-loaded.
The sealing wire presses down against the inside of
the upper sealing belt. This downward pressure
forces the sealing belts, with the web sandwiched
between, against the lower platen.
The inflated web of inflated cusions is pulled
through the seal section by the outfeed nip roller.
See Fig 2
Seal Wire
Lower Platen
Lower Block
Upper Seal Guard/Clamp removed for clarity
Sealing Belt
Seal Wire
Air injection tube