Patent ID: 10703525

Abstract:
Disclosed are a label film including a hidden pattern that is displayable through scraping a surface thereof and a manufacturing method thereof. A concealment scraping layer printing ink is formed by mixing, in respect of volume ratio, 1-10% nitrocellulose, 5-15% polyamide resin, 20-30% silver paste, 5-15% pearl powder, 10-20% ethyl acetate, 20-30% toluene, and 5-15% isopropyl alcohol and applied with intaglio printing such that a displayable mark formed of a traditional printing ink and including at least one pattern, character, or mark and at least one concealment scraping layer pattern formed with the concealment scraping layer printing ink are combined together and collectively formed on and attached to at least one surface of a single-layer label film substrate, with the concealment scraping layer pattern set on and covering at least one displayable mark, followed by steps of slitting, bonding, and cutting, to form a label film having at least one concealment scraping layer pattern covering and concealing at least one displayable mark through a combined printing operation.