... Unprinted Alu Blister Foil 20-30mic, One side Primered for retogravure or Flexo Printing both, One side HSL against PVC Alu Blister Foil 20myHard ... Foil, Hard temper,20my ,onet side lacquered with heat resistant print primer, the other side heat-seal lacquered to seal to ... less than 2mm, not have any obvious variation or loose for inner core, no serious broken and concave outside presented, the ...