Patent ID: 8220653
Filing Date: 2012-07-17
Classification: B65D,C08F,Y10T

Abstract:
1. A lid including: a crown-type shell having an inner surface and an external surface, and a detachable sealing joint upon said inner surface of said crown-type shell; and wherein the improvement comprises: a detachable hydrophilic coating based on water-soluble polymer adhered to said inner surface of said crown-type shell; and a compatible coating permeable to humidity and adhered to said detachable sealing joint and said detachable hydrophilic coating; wherein said detachable hydrophilic coating and said compatible coating form an adhesive interface between said inner surface of said crown-type shell and said detachable sealing joint, whose adherence capacity of said detachable hydrophilic coating is weakened when entering into contact with humidity.