A method and system for determining whether a first one of a plurality of labels on a roll of label stock is a full label. The methods described herein advantageously facilitates profile and dimension control of features with high aspect ratios through a sidewall passivation management scheme. The sealing part has a discharge member opening part extending downwardly from the discharge hole and fitted to the space formed between the sealing part and the main body of the bottle cap. A margin area A above the body plate V is for displaying texts andor images.