Packaging paper ink wear detection and analysis method and system

Abstract

The invention discloses a packaging paper ink wear detection analysis method and system, and relates to the technical field of ink wear detection, and the system comprises a data acquisition module, a wear measurement module, a correlation analysis module and a key area screening module. The data acquisition module is used for acquiring the ink layer thickness, the ink type and the ink content of different areas of the sample packaging paper. The method has the beneficial effects that a mathematical prediction model is established by systematically analyzing the quantitative relationship among the ink type, the ink content and the ink layer abrasion loss, the limitation of traditional qualitative detection is broken through, the scientific quantitative analysis of the abrasion performance is realized, and the accuracy and repeatability of a detection result are improved; the abrasion loss of each area of the new batch of packaging paper is predicted and sequenced based on the prediction model, high-risk abrasion areas are accurately positioned, blind detection of the whole area is avoided, the detection efficiency is greatly improved, the quality control cost of enterprises is reduced, and the method is suitable for packaging paper detection scenes of large-area printing or multi-color overprinting.

Description

Technical Field

[0001] The present invention relates to the technical field of ink abrasion detection, and in particular to a packaging paper ink abrasion detection and analysis method and system. Background Art

[0002] In the field of packaging paper printing, ink wear resistance is one of the key indicators that determine the product's appearance quality and brand image. Ink wear not only affects the packaging's aesthetics, but may also weaken its ability to carry product information and anti-counterfeiting functions. Therefore, efficient and accurate ink wear detection on packaging paper is an indispensable quality control link in the production process, and is of great significance for ensuring product quality and reducing scrap rates.

[0003] Currently, mainstream automated inspection methods typically use machine vision systems to perform global scanning and analysis of the entire packaging paper surface. While this "one-size-fits-all" approach can theoretically cover all potential defect areas, its core drawback is the significant waste of computing power. Because ink wear is not evenly distributed in practice, but is highly concentrated in specific areas susceptible to physical stress (such as folding, friction, and handling), global inspection consumes a large amount of valuable computing resources evenly on low-risk areas. This not only leads to high hardware costs and energy consumption, but also limits the processing speed of the inspection system, making it difficult to meet the real-time requirements of high-speed production lines. The development of smarter and more efficient inspection strategies is urgently needed. Summary of the Invention

[0004] The purpose of this section is to provide a packaging paper ink wear detection and analysis method and system, which can improve the efficiency of packaging paper ink wear detection.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a method for detecting and analyzing ink wear of packaging paper, comprising the following steps: S100, obtaining the ink layer thickness, ink type and ink content of different areas of the sample packaging paper, and performing a simulated wear test on the sample packaging paper under the same friction conditions; S200, measuring the ink layer thickness of each area of ​​the sample packaging paper after simulated wear, and calculating the amount of ink layer wear; S300, analyzing the influence relationship between the ink type, ink content and ink layer wear in each area based on multiple groups of simulated wear test data; S400, testing a new batch of packaging paper, calculating the predicted value of the ink layer wear for each area based on the influence relationship, and screening out key areas based on the size of the predicted value.

[0006] As a preferred embodiment of the method for detecting and analyzing ink wear of packaging paper described in the present invention, the method comprises obtaining the ink layer thickness, ink type and ink content in different areas of the sample packaging paper, comprising evenly dividing the printed packaging paper into several areas of equal area, measuring the ink layer thickness of each area in turn, and obtaining the ink type and ink content from the printing parameters of the printing equipment; the same friction conditions comprise the same friction pressure, the same number of frictions and the same friction speed; and the method comprises calculating the amount of ink layer wear, comprising calculating the change in ink layer thickness of each area before and after simulated wear as the amount of ink layer wear.

[0007] As a preferred embodiment of the method for detecting and analyzing ink wear of packaging paper described in the present invention, the multiple sets of simulated wear test data refer to performing simulated wear tests on multiple sample packaging papers under the same friction conditions to calculate the amount of ink layer wear in each area.

[0008] As a preferred embodiment of the packaging paper ink wear detection and analysis method of the present invention, in S300, the specific steps are as follows: S301, counting the ink types, and the ink content corresponding to each ink type is M1, M2...M n ; S302, calculate the wear resistance index T, the formula is: T = k1M1 + k2M2 + ... + k n M n , k n Indicates the weight coefficient corresponding to each ink type, k1+k2+…+k n =1; S303, based on the same friction condition, with ink layer wear as the dependent variable, and ink type and ink content as independent variables, substitute multiple sets of simulated wear test data corresponding to each area into the following formula to fit and establish a calculation formula for the predicted value Y0 of ink layer wear in each area:

[0009]

[0010] Where R0 represents the regression coefficient and C0 is a constant.

[0011] As a preferred embodiment of the method for detecting and analyzing ink wear on packaging paper described in the present invention, the method further comprises calculating the predicted value of ink layer wear for each region based on the influence relationship, comprising substituting the ink type and ink content data for each region of the new batch of packaging paper into the calculation formula corresponding to S303, calculating the predicted value of ink layer wear for each region, sorting all regions according to the predicted values ​​of ink layer wear, and selecting the top X regions as key regions.

[0012] As a preferred solution of the packaging paper ink wear detection and analysis system described in the present invention, it includes: a data acquisition module, a wear measurement module, a correlation analysis module and a key area screening module.

[0013] As a preferred embodiment of the packaging paper ink wear detection and analysis system described in the present invention, the data acquisition module is used to obtain the ink layer thickness, ink type and ink content in different areas of the sample packaging paper, perform a simulated wear test on the sample packaging paper under the same friction conditions, evenly divide the printed packaging paper into several areas of equal area, measure the ink layer thickness of each area in turn, and obtain the ink type and ink content from the printing parameters of the printing equipment.

[0014] As a preferred embodiment of the packaging paper ink wear detection and analysis system described in the present invention, the wear measurement module is used to measure the ink layer thickness of each area of ​​the sample packaging paper after simulated wear, calculate the amount of ink layer wear, and calculate the change in ink layer thickness before and after simulated wear in each area as the amount of ink layer wear.

[0015] As a preferred embodiment of the packaging paper ink wear detection and analysis system described in the present invention, the correlation analysis module is used to analyze the influence relationship between the ink type, ink content and ink layer wear amount in each area based on multiple sets of simulated wear test data. Under the same friction conditions, simulated wear tests are performed on multiple sample packaging papers to calculate the ink layer wear amount in each area.

[0016] As a preferred solution of the packaging paper ink wear detection and analysis system described in the present invention, the key area screening module is used to detect a new batch of packaging paper, calculate the predicted value of the ink layer wear of each area based on the influence relationship, screen out the key areas according to the size of the predicted value, substitute the ink type and ink content data of each area of ​​the new batch of packaging paper into the corresponding calculation formula, calculate the predicted value of the ink layer wear of each area, sort all areas according to the size of the predicted value of the ink layer wear, and screen out the key areas.

[0017] Beneficial effects of the present invention:

[0018] 1. By systematically analyzing the quantitative relationship between ink type, ink content, and ink layer wear, a mathematical prediction model is established to break through the limitations of traditional qualitative testing, achieve scientific quantitative analysis of wear performance, and improve the accuracy and repeatability of test results.

[0019] 2. Based on the prediction model, the wear amount of each area of ​​the new batch of packaging paper is predicted and ranked, and high-risk wear areas are accurately located to avoid blind inspection of the entire area, greatly improving inspection efficiency and reducing enterprise quality control costs. It is suitable for packaging paper inspection scenarios with large-area printing or multi-color overprinting.

[0020] 3. By unifying friction conditions (friction pressure, number, speed) and area division standards (evenly dividing areas of equal area), a standardized testing process is established to reduce human operation errors, making the wear performance of different batches and different types of packaging paper horizontally comparable, which facilitates enterprises to establish a long-term quality database and optimize printing process parameters (such as ink ratio and printing thickness).

[0021] 4. Through high-efficiency and high-precision wear detection methods, problems such as blurred images and missing logos on cigarette packaging paper can be effectively avoided, ensuring the integrity of brand information and the effectiveness of anti-counterfeiting functions, improving the market competitiveness of cigarette packaging, and enhancing its adaptability and practicality in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventiveness or labor. Among them:

[0023] Figure 1 The present invention is a flowchart of the packaging paper ink wear detection and analysis method. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from this description. The "embodiment" referred to here refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention.

[0026] Example 1

[0027] Reference Figure 1 This embodiment provides a method for detecting and analyzing ink wear of packaging paper, which specifically includes the following steps: S100, obtaining the ink layer thickness, ink type and ink content of different areas of sample packaging paper, and performing a simulated wear test on the sample packaging paper under the same friction conditions; S200, measuring the ink layer thickness of each area of ​​the sample packaging paper after simulated wear, and calculating the ink layer wear amount; S300, analyzing the influence relationship between the ink type, ink content and ink layer wear amount in each area based on multiple groups of simulated wear test data; S400, testing a new batch of packaging paper, calculating the predicted value of the ink layer wear amount of each area based on the influence relationship, and screening out key areas based on the size of the predicted value.

[0028] Use the grid method to evenly divide the printed packaging paper into a×b rectangular areas (e.g., 10×10=100 areas), with the area of ​​each area not less than 2cm×2cm to ensure representative measurement.

[0029] Use a laser thickness gauge or white light interferometer thickness gauge to measure the ink layer thickness, select 3 measurement points in each area and take the average value to ensure a certain accuracy.

[0030] By reading the PLC control system parameters of printing equipment (such as offset printing machines, flexographic printing machines), data such as the ink model (such as UV ink, water-based ink) and the ink supply per single print of each printing unit can be obtained.

[0031] Obtain the ink layer thickness, ink type and ink content in different areas of the sample packaging paper, including evenly dividing the printed packaging paper into several areas of equal area, measuring the ink layer thickness of each area in turn, obtaining the ink type and ink content from the printing parameters of the printing equipment, and calculating the ink layer wear under the same friction conditions, including the same friction pressure, the same number of frictions and the same friction speed, including calculating the change in ink layer thickness of each area before and after simulated wear as the ink layer wear.

[0032] Multiple sets of simulated wear test data refer to simulated wear tests on multiple sample packaging papers under the same friction conditions, and the amount of ink layer wear in each area is calculated.

[0033] In S300, the specific steps are as follows:

[0034] S301, counting the ink types, and the ink content corresponding to each ink type is M1, M2...M n ;

[0035] S302, calculate the wear resistance index T, the formula is: T = k1M1 + k2M2 + ... + k n M n , k n Indicates the weight coefficient corresponding to each ink type, k1+k2+…+k n =1;

[0036] S303. Based on the same friction conditions, with ink layer wear as the dependent variable and ink type and ink content as independent variables, multiple sets of simulated wear test data corresponding to each region are substituted into the following formula to establish a calculation formula for the predicted value Y0 of ink layer wear in each region:

[0037]

[0038] Where R0 represents the regression coefficient and C0 is a constant.

[0039] The predicted value of ink layer wear for each area is calculated based on the influence relationship. This includes substituting the ink type and ink content data for each area of ​​the new batch of packaging paper into the corresponding calculation formula in S303 to calculate the predicted value of ink layer wear for each area. All areas are sorted according to the predicted ink layer wear values, and the top X areas are selected as key areas.

[0040] Through the orthogonal test method, wear tests were carried out on different combinations of ink types. Based on the wear results, the wear resistance contribution of each ink was inferred and the weight coefficient was determined (for example, the weight coefficient of ink with good wear resistance was 0.3-0.5, and the weight coefficient of ink with poor wear resistance was 0.1-0.2).

[0041] The least squares method was used to fit multiple groups of test data, the validity of the model was verified through significance test, and the specific values ​​of the regression coefficient R0 and constant C0 were determined.

[0042] When screening key areas, based on the quality requirements of the packaging paper, take the areas before the predicted wear value of 5% to 10% as key areas (such as X = 5 to 10), or set dynamic thresholds based on the company's historical failure rate.

[0043] Example 2

[0044] This embodiment provides a packaging paper ink wear detection and analysis system, which specifically includes a data acquisition module, a wear measurement module, a correlation analysis module, and a key area screening module.

[0045] The data acquisition module is used to obtain the ink layer thickness, ink type and ink content in different areas of the sample packaging paper. Under the same friction conditions, a simulated wear test is performed on the sample packaging paper. The printed packaging paper is evenly divided into several areas of equal area. The ink layer thickness of each area is measured in turn, and the ink type and ink content are obtained from the printing parameters of the printing equipment.

[0046] The wear measurement module is used to measure the ink layer thickness of each area of ​​the sample packaging paper after simulated wear, calculate the ink layer wear amount, and calculate the change in ink layer thickness before and after simulated wear in each area as the ink layer wear amount.

[0047] The correlation analysis module is used to analyze the influence relationship between ink type, ink content and ink layer wear in each area based on multiple sets of simulated wear test data. Under the same friction conditions, simulated wear tests are performed on multiple sample packaging papers to calculate the ink layer wear in each area.

[0048] The key area screening module is used to inspect new batches of packaging paper, calculate the predicted value of the ink layer wear in each area based on the influence relationship, and screen out key areas based on the size of the predicted value. The ink type and ink content data of each area of ​​the new batch of packaging paper are substituted into the corresponding calculation formula to calculate the predicted value of the ink layer wear in each area. All areas are sorted according to the size of the predicted value of the ink layer wear to screen out key areas.

[0049] Importantly, although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible without departing substantially from the subject matter described in this application, such as the size, structure, shape and proportion of the various elements, as well as temperature, pressure, mounting arrangements, use of materials, color, orientation changes, etc.; for example, an element shown as integrally formed may be composed of multiple parts or elements, and the position of the elements may be inverted or otherwise changed; therefore, all such modifications should be included within the scope of the present invention, and other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention.

Claims

1. A packaging paper ink wear detection and analysis method, characterized in that: The following steps are involved: S100, obtaining the ink layer thickness, ink type, and ink content of different regions of the sample wrapping paper, and performing a simulated wear test on the sample wrapping paper under the same friction conditions; S200, measuring the ink layer thickness of each area of ​​the sample wrapping paper after simulated wear, and calculating the amount of ink layer wear; S300, analyzing the influence relationship between the ink type, ink content, and ink layer wear amount in each area based on multiple sets of simulated wear test data; S400: Test a new batch of packaging paper, calculate a predicted value of ink layer wear in each area based on the influence relationship, and select key areas based on the predicted values.

2. The packaging paper ink wear detection and analysis method according to claim 1, characterized in that: The obtaining of the ink layer thickness, ink type and ink content in different areas of the sample packaging paper includes evenly dividing the printed packaging paper into several areas of equal area, measuring the ink layer thickness of each area in turn, and obtaining the ink type and ink content from the printing parameters of the printing equipment. The same friction conditions include the same friction pressure, the same number of frictions and the same friction speed. The calculating of the ink layer wear includes calculating the change in the ink layer thickness of each area before and after simulated wear as the ink layer wear.

3. The packaging paper ink wear detection and analysis method according to claim 1, characterized in that: The multiple sets of simulated wear test data refer to simulated wear tests performed on multiple sample packaging papers under the same friction conditions, and the amount of ink layer wear in each area is calculated.

4. The packaging paper ink wear detection and analysis method according to claim 3, characterized in that: In S300, the specific steps are as follows: S301, counting the ink types, and the ink content corresponding to each ink type is M1, M2...M n ; S302, calculate the wear resistance index T, the formula is: T = k1M1 + k2M2 + ... + k n M n , k n Indicates the weight coefficient corresponding to each ink type, k1+k2+…+k n =1; S303. Based on the same friction conditions, with ink layer wear as the dependent variable and ink type and ink content as independent variables, multiple sets of simulated wear test data corresponding to each region are substituted into the following formula to establish a calculation formula for the predicted value Y0 of ink layer wear in each region: Where R0 represents the regression coefficient and C0 is a constant.

5. The packaging paper ink wear detection and analysis method according to claim 3, characterized in that: Calculating the predicted value of ink layer wear for each region based on the influence relationship includes substituting the ink type and ink content data for each region of the new batch of packaging paper into the calculation formula corresponding to S303, calculating the predicted value of ink layer wear for each region, sorting all regions according to the predicted values ​​of ink layer wear, and selecting the top X regions as key regions.

6. A packaging paper ink wear detection and analysis system, using the packaging paper ink wear detection and analysis method according to claim 1, characterized in that: It includes data acquisition module, wear measurement module, correlation analysis module and key area screening module.

7. The packaging paper ink wear detection and analysis system according to claim 6, characterized in that: The data acquisition module is used to obtain the ink layer thickness, ink type and ink content in different areas of the sample packaging paper. Under the same friction conditions, a simulated wear test is performed on the sample packaging paper. The printed packaging paper is evenly divided into several areas of equal area, and the ink layer thickness of each area is measured in turn. The ink type and ink content are obtained from the printing parameters of the printing equipment.

8. The packaging paper ink wear detection and analysis system according to claim 6, characterized in that: The wear measurement module is used to measure the ink layer thickness of each area of ​​the sample packaging paper after simulated wear, calculate the ink layer wear amount, and calculate the change in ink layer thickness before and after simulated wear in each area as the ink layer wear amount.

9. The packaging paper ink wear detection and analysis system according to claim 6, characterized in that: The correlation analysis module is used to analyze the influence relationship between the ink type, ink content and ink layer wear in each area based on multiple sets of simulated wear test data. Under the same friction conditions, simulated wear tests are performed on multiple sample packaging papers to calculate the ink layer wear in each area.

10. The packaging paper ink wear detection and analysis system according to claim 6, characterized in that: The key area screening module is used to inspect a new batch of wrapping paper, calculate the predicted value of the ink layer wear amount in each area based on the influence relationship, screen out key areas based on the size of the predicted value, substitute the ink type and ink content data of each area of ​​the new batch of wrapping paper into the corresponding calculation formula, calculate the predicted value of the ink layer wear amount in each area, sort all areas according to the size of the predicted value of the ink layer wear amount, and screen out key areas.

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