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1. (WO2018077171) WIDE MOUTH EASY-TO-PULL CAN TOP COVER HAVING IDENTIFICATION CODE

Pub. No.:    WO/2018/077171    International Application No.:    PCT/CN2017/107550
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Wed Oct 25 01:59:59 CEST 2017
IPC: B65D 17/34
B65D 25/00
Applicants: SIGMATRIX TECHNOLOGY CO., LTD.
信码互通(北京)科技有限公司
Inventors: WU, Lin
吴林
Title: WIDE MOUTH EASY-TO-PULL CAN TOP COVER HAVING IDENTIFICATION CODE
Abstract:
A wide mouth easy-to-pull can top cover having an identification code, comprising a cover body (1) and a pull tab (3). The cover body (1) at least comprises a substrate and a photon-sensitive ink layer provided on the inner side of the substrate. The photo-sensitive ink layer is exposed and forms a first grayscale identification code (6), or the photon-sensitive ink layer forms the first grayscale identification code (6) and is then covered by an inner coating. The first grayscale identification code (6) is an image formed by a photon-activated material in the photon-sensitive ink layer partly undergoes a change in appearance. The first grayscale identification code (6) is provided on the rear surface of an opening region and located at the center position of the cover body. A second grayscale identification code (7) is provided and formed outside of the substrate. Because the opening region of a large area is provided at the center position of the cover body, and the first grayscale identification code is provided at the center position on the inside of the cover body, the completeness of the first grayscale identification code being provided on the inner side of the opening region is ensured, and the difficulty of manufacturing the easy-to-pull top cover is simplified.