RU97843U1 - INFORMATION PROTECTIVE LABEL - Google Patents

Abstract

 1. An information-protective label made on the basis of a self-adhesive polymer film with an adhesive layer by printing a bar code that carries identification and / or other information, characterized in that the adhesive layer of the self-adhesive polymer film allows mechanical separation of the label from the subject of protection and identification without plastic tensile strain of the film and violation of the bar code, as the sealed base of the self-adhesive polymer film contains anisotropic heat-shrinkable GCC gradient shrinking under part of the printed surface with a bar code, wherein the heat shrinkage gradient of the film does not coincide with the direction of the bar code. ! 2. The security label according to claim 1, characterized in that the heat-shrink gradient of the sealed backing of the self-adhesive polymer film is directed perpendicular to the code strokes. ! 3. The security label according to claim 1, characterized in that the portions of the sealed backing of the self-adhesive film with a heat-shrink gradient match the size of the label or exceed the width of at least one bar or code space. ! 4. The information security label according to claim 1, characterized in that portions of the sealed backing of the self-adhesive film with a heat shrink gradient are periodically repeated at a distance not exceeding the longitudinal dimensions of the bar code printed on the label. ! 5. The information security label according to claim 1, characterized in that the local inhomogeneity of the shrinkage of the sealed backing of the self-adhesive film in the direction of the shrinkage gradient in the area of the sealed surface �

Description

The proposal relates to labels, tags, postage stamps or similar means intended for identification and indication of products (items, goods) of a particular manufacturer or owner by printing information symbols on them, for example, a bar code.

Known information-protective label made on the basis of a self-adhesive polymer film or self-adhesive paper with an adhesive layer by printing a bar code that carries identification and / or informative information, including an additional diffractive copy protection element (Utility Model Patent for Application No. 98115914/20, IPC G09F 3/00, published March 16, 1999). The label is characterized in that its base on the side attached to the product contains an adhesive layer, perforations and perforations to ensure that the base is torn when trying to remove it from the product. Paper can have watermarks and UV-active fibers in its composition, and film and paper special additives - chemicals determined by express methods of qualitative chemical analysis (instrumental recognition) when checking the authenticity of the label. According to the proposal, at least two components of the label selected from the group: base, barcode printing or additional diffraction element have hidden security elements that are visible when using the same means of instrumental recognition.

A disadvantage of the known technical solution is the complexity of the design, manufacturing technology and instrumental recognition of fake labels.

The technical task to be solved is to simplify the design, instrumental recognition and label manufacturing technology without compromising the reliability of its copy protection.

The essence of the proposal

The stated technical problem is solved by the fact that in the known information-protective label made on a self-adhesive polymer film with an adhesive layer by printing on it a bar code that carries identification and / or other information, according to the proposal, contains an anisotropic heat-shrinkable film as the sealed base of the self-adhesive polymer film a film with a heat-shrink gradient under a portion of the sealed surface with a bar code, and the heat-shrink gradient of the film does not coincide with the direction of the strokes to a.

Advantageously, the heat shrink gradient under a portion of the sealed surface with a bar code is directed perpendicular to the code strokes. The areas of the printed surface of the base film with the heat shrink gradient may coincide in size with the entire surface of the label or be equal in size to the width of at least one line or space of the code, and periodically repeated at a distance not exceeding the longitudinal dimensions of the bar code printed on the label. The bar code on the label can be specially distorted by increasing the width of the strokes and spaces in proportion to the local shrinkage of the film portion at the place of printing so that after heat treatment of the label, which was not initially read by the bar code scanner, its information appears in a form accessible to the scanner.

A positive effect is the simplification of the design, manufacturing technology and instrumental recognition of labels without compromising the reliability of its copy protection is achieved by using new materials and technologies for its manufacture described below.

Authentication is as follows. The label is removed from the object of protection (product) without destroying and stretching the film and immersed in hot water (ironed through a cloth, placed in a microwave oven, oven, blown with a hot hairdryer, etc. to heat the film to a shrink temperature determined by the nature of the polymer ( for example, 80 ÷ 90 ° C for polypropylene.) A fake (printed on other than the proposed, shrink or isotropic material) or original label is recognized using a bar code scanner. The bar code on the fake security object will be the same to identify the product before and after heat treatment, and the original will show a different result when scanning before and after heat treatment (in two versions). The bar code of the “normal” (undistorted) appearance printed on the label after heat treatment will not be recognized by the scanner due to the inhomogeneous shrinkage of its individual elements (a disproportionate reduction in the width of strokes and / or spaces, and the elimination of a bar code module.) A bar code of a “specially distorted” form, for example, with extended strokes and spaces on chastkah with a large shrinkage after heat treatment will be recognized (read) scanner.

Information confirming the possibility of implementing the proposal

The layouts of the test labels are made of polypropylene, polyvinyl chloride and polyethylene films of various thicknesses, subjected to orientational drawing and cooling in the stressed state to create a shrink gradient to give them heat-shrink properties, zone heat-setting and then corona treated to increase the adhesion of printing inks. In areas of the film with a gradient of shrinkage, a barcode image of a “normal” or “specially distorted” type is applied by flexographic printing. The information content of the barcode labels printed on a film basis is checked using a scanner and then a layer of glue is applied to the surface of the film opposite to the sealed one. The information-protective label is ready and can be fixed (glued) on the protected product (packaging). The level of heat shrink properties of the polymeric materials used is reflected in the graphs of the dependence of the film shrinkage on temperature, and the resistance of the bar codes to distortion in the graphs of the probability of reading the bar code information on the total shrinkage of the films under test (heat treatment) conditions.

The proposal is illustrated by the layout of the barcode on the film with a different shrinkage gradient in size and direction, as well as examples of label production.

Figure 1. An information-protective label with a “normal” type bar code before (1) and after (2) heat treatment, made by printing on a heat-shrinkable film with a shrink gradient directed perpendicular to the code lines. 3 - a portion of the film with minimal shrinkage (zero); 4, 5 - sections of the film with maximum shrinkage.

Figure 2. An information-protective label with a “distorted” type bar code before (1) and after (2) heat treatment, made by printing on a heat-shrinkable film with a shrink gradient directed perpendicular to the code lines. 3 - plot film with maximum shrinkage; 4, 5 - sections of the film with minimal shrinkage (zero).

Figure 3. An information-protective label with a “normal” type bar code before (1) and after (2) heat treatment, made by printing on a heat-shrinkable film with a shrink gradient directed at an angle of 40 degrees to the code strokes. 3 - a portion of the film with minimal shrinkage (zero); 4, 5 - sections of the film with maximum shrinkage.

Figure 4. Dependence of the probability of reading information (identification frequency) of a bar code from a label printed on a film with a heat shrink gradient under one code element (bar or space) on the local shrinkage ("compression") of the code element during heat treatment: 1 - film shrink under the printed bar; 2 - shrinkage of the film under the space.

Figure 5. The dependence of shrinkage of the base film of the label on the heat treatment temperature: 1 - polypropylene film; 2 - film of polyvinyl chloride.

6. Flexible film packaging (packaging) with a “removable” label attached: 1 - packaging (packaging); 2 - self-adhesive label, 3 - section of the label with a gradient of heat shrink; 4 - removing the label for identification by heat treatment.

7. An information-protective label with a “normal” type bar code before (1) and after (2) heat treatment, made by printing on a heat-shrinkable film with a shrink gradient directed perpendicular to the code lines. 3 - plot of the film with maximum shrinkage (zero); 4 - a portion of the film with minimal shrinkage

Example 1. An information security label based on a self-adhesive heat-shrinkable polypropylene film with adhesive strength according to FINAT FTM1 16 N / 25 mm (temporary fixation) with a “normal” type bar code of 10 × 30 mm in size on a rectangular section with a shrink gradient directed perpendicular to the bars 5 % per 1 mm, i.e. shrinkage of individual micro-sections of the film over a 10 mm sealed surface increases from 0% to 50%. A plot with a heat shrink gradient coincides with 1/3 of the width of the bar code (Fig. 7, scheme 1). The “normal” type barcode printed on the label is read by the scanner. To verify the authenticity of the label, it is heated in hot water at 85-90 ° C for 5-10 s. The label after shrinkage of the base film takes a distorted appearance (Fig. 7, scheme 2) and is not read by the scanner, which is proof of its authenticity. Control samples of labels printed on isotropic or uniformly shrink films of the same polymer before and after heat treatment are read by the scanner in the same way, which is evidence of their falsification.

Example 2. Information security label according to example 1 from a self-adhesive heat-shrinkable polyvinyl chloride film. The heat shrink gradient is 10% per 1 mm. The heat treatment temperature during authentication is 70, 80 and 90 ° C.

Example 3. Information-protective label according to example 1 from a self-adhesive heat-shrinkable polyethylene film. A film section with a heat shrink gradient is 40% per 1 mm and is located under one stroke of a “specially distorted” code of 30 × 60 mm in size. The width of the distorted (expanded) stroke is 2 mm (figure 2, scheme 1). Local shrinkage of a portion of the film under a stroke of 40%. Local heat shrinkage of the rest of the film is negligible and amounts to about 0%. After heat treatment and shrinkage of the film, the label has a normal appearance (figure 2, scheme 2) and is read by the scanner, which allows you to identify the original product in the package.

Example 4. An information security label in Example 3, but a portion of the film with a shrink gradient is located under three strokes and spaces between them. After heat treatment and shrinkage of the film, the label has a normal appearance and is read by the scanner.

Example 5. Information-protective label according to example 1, but the plot of the film with a gradient of shrinkage is located only under one stroke. The “normal” type barcode printed on the label is read by the scanner. To verify the authenticity of the label, it is heated in hot water at 85-90 ° C for 5-10 s. The label after shrinkage of the base film takes a distorted appearance and is not read by the scanner, which is proof of its authenticity. Control samples of labels printed on isotropic or uniformly shrink films of the same polymer before and after heat treatment are read by the scanner in the same way, which is evidence of their falsification.

Example 6. Information-protective label according to example 1, but the barcode was printed at an angle of 45 degrees to the gradient of the shrink of the label on the plot of the base film with a width of 2 mm (figure 3, scheme 1). After heat treatment and shrinkage of the film in sections 4 and 5, the distortion of the bar code is determined visually without using a scanner and clearly indicates the authenticity of the label (Fig. 3, scheme 2).

Claims (6)

1. An information-protective label made on the basis of a self-adhesive polymer film with an adhesive layer by printing a bar code that carries identification and / or other information, characterized in that the adhesive layer of the self-adhesive polymer film allows mechanical separation of the label from the subject of protection and identification without plastic tensile strain of the film and violation of the bar code, as the sealed base of the self-adhesive polymer film contains anisotropic heat-shrinkable GCC gradient shrinking under part of the printed surface with a bar code, wherein the heat shrinkage gradient of the film does not coincide with the direction of the bar code. 2. The security label according to claim 1, characterized in that the heat-shrink gradient of the sealed backing of the self-adhesive polymer film is directed perpendicular to the code strokes. 3. The security label according to claim 1, characterized in that the portions of the sealed backing of the self-adhesive film with a heat-shrink gradient match the size of the label or exceed the width of at least one bar or code space. 4. The information security label according to claim 1, characterized in that portions of the sealed backing of the self-adhesive film with a heat shrink gradient are periodically repeated at a distance not exceeding the longitudinal dimensions of the bar code printed on the label. 5. The information security label according to claim 1, characterized in that the local inhomogeneity of shrinkage of the sealed backing of the self-adhesive film in the direction of the shrinkage gradient in the area of the sealed surface with a bar code is 2 ÷ 40% per 1 mm of film. 6. The information security label according to claim 1, characterized in that the bar code on the label is specially distorted by increasing the width of the strokes and spaces in proportion to the local shrinkage of the film portion at the place of printing.