RU2536670C1 - Method of protection of packing production from falsification - Google Patents

Abstract

FIELD: physics, alarm systems.

SUBSTANCE: invention relates to the field of marking of packing production for its protection against falsification. It is offered to apply on the attached to packaging the heat shrinking material the modified bar code with linear symbol in preset direction and to compare it with similar reference code placed on packaging in another direction.

EFFECT: increase of protection at the expense of modifying of the bar code due to heat shrinking.

Description

The invention relates to the field of labeling of packaging products.

There is a method of protecting printed products from fraud, which consists in printing a print containing a bar code on a sealed polymer shrink material. In this case, a distorted barcode is printed with strokes and spaces of increased width in proportion to the shrinkage of the film at the place of printing, as well as a normal-looking barcode. As the printed material, an anisotropic thermoplastic film is used with a heat-shrink direction that is locally heterogeneous, located at least on the sealed part of the distorted bar code. In this case, the direction of the film shrink does not coincide with the direction of the code strokes. The areas of the printed surface of a polymer film with a heat shrink gradient may exceed the dimensions of the bar code in magnitude or coincide in size with the width of at least one stroke or space of the code, and / or periodically repeat at a distance not exceeding the longitudinal dimensions of the printed bar code. Then shrink the material in those areas where the distorted bar code is located [1].

A disadvantage of the known technical solution is the low-tech use of local shrinkage of the material and the difficulty of the necessary combination of the position of the linear bar code and the direction and localization of shrinkage both at the stage of creation and at the stage of deformation of the material due to selective heat exposure.

The purpose of the proposed technical solution is to protect packaging products from tampering by modifying a bar code printed on heat-shrinkable material.

The problem is solved due to the fact that the method of protecting packaging products from tampering is realized by printing an impression containing a barcode image on a sealed heat-shrinkable polymeric material. In this case, the bar code of linear symbolism is programmed to divide the strokes into smaller strokes due to the screening process for the given parameters, which leads to illegibility of the label. When printing, the code number is not indicated. This allows you to achieve the latency of the image code for decoding devices, while the direction of the heat shrink of the film should be perpendicular to the direction of the strokes of the code. After thermal shrinkage of the material on which the code is applied, the strokes restore their integrity to the extent necessary for the barcode to be readable for decoding devices.

In addition to the modified bar code, a similar normal-looking bar code is printed to control the security code information. A rasterized bar code designed to protect packaging products from tampering is placed on heat-shrinkable material with the required shrink gradient attached to the packaging product. The normal bar code can be placed both on the package and on the attached label of the packaging product. After the shrinkage process is carried out due to the thermal effect on the rasterized bar code, the information contained in the codes is read and compared.

The main advantage of the proposed method is the ability to protect packaging products using the manufacturing process of modified security barcodes by including a simple screening algorithm. This allows you to increase the degree of protection of the packaging from fraud and the manufacturability of the labeling process of packaging products.

Information sources

1. RF patent No. 2010108169A, G06K 9/00 dated 10.9.2011.

Claims (1)

A method of protecting packaging products from tampering by printing on a polymer anisotropic shrinkable material attached to the packaging product a distorted bar code of linear symbolism with the location of the code bars perpendicular to the direction of shrinkage of the material, and also by printing a similar normal code on the package, characterized in that the bar code without indicating it the numbers are rasterized at the prepress stage with a line raster, the lines of which are parallel to the strokes of the code, after which it is printed they are printed on an attachable polymer anisotropic heat-shrinkable material, taking into account the orientation of the code bars perpendicular to the direction of heat shrinkage of the material, and a second similar normal-looking barcode is printed on the packaging, then the information is read from two codes, and the attached material with a printed rasterized code is subjected to heat, read and compared again information of two codes.