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Disbonding and peeling on the edges of the liner during test, under SNA…
Disbonding and peeling on the edges of the liner during test, under SNA testing conditions
Aluminium surface preparation not optimized
SAA not sufficient
try CAA
try PAA
try grit Blasting
SAA too old prior to bonding
try fresh SAA (<8h)
try old SAA but stored
with protective Primaire
Adhesive thickness too low in the critical area
Curing cycle not optimized
(too long facilitating adhesive flow during curing)
try adhesive fast cure
Initial adhesive thickness too low
try same adehsive grade but with higher gramage (+33%)
lack of adhesive carrier to control adhesive flow
(adhesive nature not optmized)
Try same adhesive grade
in supported version
Pressure method optimized In the upper radius
Try different designs pressure tool design
Close edges, pinching the liner creates edge effect
try edge trimming after curing to create sharp edges and remove edge effects
shear Strength of curent adhesive not sufficient
Tg too low
Current curing cycle
of curent adhesive grade not optimized
Check curing cycle by DSC
Try new adhesive grade
in supported version
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