Large-opening ring-pull can top cover with gray scale identification code

Abstract

The invention discloses a large-opening ring-pull can top cover with a gray scale identification code. The large-opening ring-pull can top cover comprises a cover body and a pull ring, wherein the cover body at least comprises a base material and a photon sensitive ink layer arranged on the inner side of the base material; the photon sensitive ink layer is exposed to form a first gray scale identification code, or after forming the first gray scale identification code, the photon sensitive ink layer is covered by an inner coating layer; the first gray scale identification code is an image formed by the appearance change of part of a photon active material in the photon sensitive ink layer; the surface of the first gray scale identification code is smooth, and has a gray scale difference from the surrounding region; and the first gray scale identification code is arranged on the back surface of the opening region and is located at the central position of the cover body. By the arrangement of the opening region with a relatively large area at the central position of the cover body and the arrangement of the first gray scale identification code with the smooth and attractive surface at the central position in the cover body, the large-opening ring-pull can top cover guarantees the arrangement completeness of the first gray scale identification code on the inner side of the opening region, and the difficulty in manufacturing the ring-pull can top cover is simplified.

Description

technical field [0001] The invention relates to a top cover of a pop can, in particular to a top cover of a pop can with a gray scale identification code. Background technique [0002] The popularization and application of the Internet of Things is inseparable from the automatic identification of identification codes (including but not limited to QR codes or digital codes, etc.). The identification code represented by the two-dimensional code has the characteristics of large data storage capacity and good confidentiality, and can be better combined with mobile terminals such as smart phones to form a good interactivity and user experience. QR codes are widely used in current society. In recent years, people have successively proposed a variety of schemes to use QR codes for product anti-counterfeiting, point marketing, product traceability, and anti-smuggling. [0003] For example, the applicant disclosed a Chinese utility model with the patent number ZL 201520922691.0 on ...

AI Technical Summary

Problems solved by technology

[0004] However, due to the existing structure of the top cover of the pop can, its opening area is located at the position of the whole top cover close to one side edge, and the opening is relatively small, so when making the top cover of the pop can, it is necessary to make the top cover of the pop can on the back of the sheet. Multiple identification codes are set, and when the scoring line of the can top cover is processed to form a closed area, strict positioning and complex angle adjustment are required to ensure that the first information layer for consumers to obtain is set on the inside of the cover. within the area

Moreover, the existing technology uses spraying, laser burning or etching to form an identification code with a concave-convex structure on the surface of the top cover of the can. The surface of the processed cover is not smooth, which affects the appearance of the cover. There will be a lot of smoke and dust in the container, and the need to use a relatively high-power laser will consume more energy and have a greater impact on the environment. Therefore, it is necessary to improve the existing can top cover and its structure for setting the identification code

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