... 950mm, length 60-2000mm Type of bag: flat-open, self-sealing, envelope, one side sealed bag etc. Printing: single-color ... ≤0.5GB/T1037-1998Peel StrengthN≥1.5NQB/T1130-1991Heat sealing strengthN/15MM≥20NGB/T2358-1998Friction coefficients N0.1-0. ... punched hole, sticking, foreign matters, delamination, and no greasy dirt.3.Heat sealing area: No virtual sealing, No obvious air bubble. Keep smooth.4.Error ...