A paperboard folding and bursting resistance performance test method, computer equipment and storage medium

Abstract

The application discloses a paperboard folding and bursting resistance performance test method, a computer device and a storage medium. The method comprises the following steps: obtaining a first test paper sample; performing indentation on the first test paper sample to obtain a bursting index of the first test paper sample and an indentation coefficient corresponding to the bursting index; obtaining a second test paper sample, wherein the second test paper sample comprises at least two paper samples; performing indentation on one of the second test paper samples by using the indentation coefficient; performing stiffness testing on the second test paper sample after the indentation to obtain stiffness data of the second test paper sample after the indentation; performing stiffness testing on the second test paper sample without indentation to obtain stiffness data of the second test paper sample without indentation; calculating a folding factor of the second test paper sample according to the stiffness data of the second test paper sample after the indentation and the stiffness data of the second test paper sample without indentation; and obtaining the folding factor by calculation, so as to provide selectable parameters for subsequent processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of papermaking, in particular to a paperboard folding and bursting resistance performance test method, a computer device and a storage medium. BACKGROUND

[0002] Common industrial paper mainly includes kraft paper board, corrugated core paper, coated white paper board, gray paper board, etc. Among them, the coated white paper board is mainly made of pulp as the main raw material, and after advanced papermaking process, printing, die cutting, box forming and other post-processing processes, it becomes a fine printing packaging material, which is widely used in individual packaging or inner packaging of tobacco, alcohol, food, clothing, medicine, shoes, etc. In addition to the requirements of conventional basis weight, thickness, surface flatness, strength index, and printing suitability, the bursting resistance is one of the key indicators in the actual application and processing process.

[0003] The commonly used detection method is the bursting index. First, an indentation is needed. The indentation refers to a process of pressing a line mark or groove mark on the paper sample using a mold. The bursting refers to the critical point of the paper surface coating / fiber layer bursting under a certain pressure per unit area. This critical point is the bursting index. However, this method can only represent the degree and result of bursting, and cannot provide reference for the internal status of bursting itself and subsequent improvement control. SUMMARY

[0004] The technical problem solved by the present application is that pure measurement of the bursting index cannot represent the detailed situation of the paper sample in detail, and cannot provide data reference for subsequent processing.

[0005] To solve the above problems, the first technical solution adopted by the present application is: a paperboard folding and bursting resistance performance test method, the method comprising: obtaining a first test paper sample; performing indentation on the first test paper sample to obtain the bursting index of the first test paper sample and the indentation coefficient corresponding to the bursting index; obtaining a second test paper sample, the second test paper sample being at least two; performing indentation on the second test paper sample with the indentation coefficient; performing stiffness test on the second test paper sample after indentation to obtain stiffness data of the second test paper sample after indentation; performing stiffness test on the second test paper sample without indentation to obtain stiffness data of the second test paper sample without indentation; calculating the folding factor of the second test paper sample according to the stiffness data of the second test paper sample after indentation and the stiffness data of the second test paper sample without indentation; wherein the first test paper sample and the second test paper sample are paper samples of the same batch.

[0006] The step of making an indentation on the first test paper sample to obtain the burst index of the first test paper sample and the indentation coefficient corresponding to the burst index further comprises: making a horizontal indentation and a vertical indentation on the first test paper sample respectively; obtaining the horizontal burst index and the vertical burst index of the first test paper sample respectively, and the horizontal indentation coefficient corresponding to the horizontal burst index and the vertical indentation coefficient corresponding to the vertical burst index; wherein the horizontal indentation and the vertical indentation are parallel to two edges of the first test paper sample respectively.

[0007] The step of obtaining the second test paper sample further comprises: printing ink on the first surface of the second test paper sample, and making the ink evenly distributed on the first surface of the test paper sample; and drying the second test paper sample after printing ink.

[0008] The step of making an indentation on the second test paper sample with the indentation coefficient further comprises: making a horizontal indentation on the second test paper sample with the horizontal indentation coefficient; and making a vertical indentation on another second test paper sample with the vertical indentation coefficient.

[0009] The step of making a horizontal indentation on the second test paper sample with the horizontal indentation coefficient further comprises: making a horizontal indentation on the second test paper sample with a first indentation coefficient; wherein the first indentation coefficient is greater than the horizontal indentation coefficient; and the step of making a vertical indentation on another second test paper sample with the vertical indentation coefficient further comprises: making a vertical indentation on the second test paper sample with a second indentation coefficient; wherein the second indentation coefficient is greater than the vertical indentation coefficient.

[0010] The step of making a horizontal indentation on the second test paper sample with the horizontal indentation coefficient further comprises: making a horizontal indentation on the second test paper sample with a first indentation coefficient; wherein the first indentation coefficient is greater than the horizontal indentation coefficient; and the step of making a vertical indentation on another second test paper sample with the vertical indentation coefficient further comprises: making a vertical indentation on the second test paper sample with a second indentation coefficient; wherein the second indentation coefficient is greater than the vertical indentation coefficient.

[0011] The step of making a horizontal indentation on the second test paper sample with the horizontal indentation coefficient further comprises: making a horizontal indentation on the second test paper sample with a first indentation coefficient; wherein the first indentation coefficient is greater than the horizontal indentation coefficient; and the step of making a vertical indentation on another second test paper sample with the vertical indentation coefficient further comprises: making a vertical indentation on the second test paper sample with a second indentation coefficient; wherein the second indentation coefficient is greater than the vertical indentation coefficient.

[0012] The step of performing stiffness test on the second test paper sample without indentation to obtain stiffness data of the second test paper sample without indentation further comprises performing transverse stiffness test and longitudinal stiffness test on the second test paper sample without indentation to obtain transverse stiffness data and longitudinal stiffness data of the second test paper sample without indentation.

[0013] The step of calculating the folding factor of the second test paper sample according to the stiffness data of the second test paper sample after indentation and the stiffness data of the second test paper sample without indentation further comprises calculating the transverse folding factor of the second test paper sample according to the transverse stiffness data of the second test paper sample after indentation and the transverse stiffness data of the second test paper sample without indentation; and calculating the longitudinal folding factor of the second test paper sample according to the longitudinal stiffness data of the second test paper sample after indentation and the longitudinal stiffness data of the second test paper sample without indentation.

[0014] To solve the above problems, a second technical solution adopted by the present application is to provide a computer device, comprising: a processor; a storage connected to the processor, used to store a computing program executable on the processor; wherein the processor executes the computer program to realize the method in the first technical solution of the present application.

[0015] To solve the above problems, a third technical solution adopted by the present application is to provide a storage medium, the storage medium has a computer program stored thereon, and the computer program is executed by a processor to realize the method in the first technical solution of the present application.

[0016] The beneficial effects of the present application are: different from the prior art, the folding factor under different indentation conditions is calculated by the bending stiffness and bending resistance of the paper under different indentation coefficients, thereby providing selectable parameters for subsequent processing. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a flowchart of the first embodiment of the paperboard folding and bursting resistance test method of the present application;

[0018] Figure 2 is a flowchart of the second embodiment of the paperboard folding and bursting resistance test method of the present application;

[0019] Figure 3 is a structural schematic block diagram of the computer device embodiment of the present application;

[0020] Figure 4 is a structural schematic block diagram of the storage medium embodiment of the present application. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0022] If the technical solutions of the present application involve personal information, the product applying the technical solutions of the present application has clearly informed the personal information processing rules before processing the personal information and has obtained the personal independent consent. If the technical solutions of the present application involve sensitive personal information, the product applying the technical solutions of the present application has obtained the personal independent consent before processing the sensitive personal information and at the same time meets the requirement of “explicit consent”. For example, at the personal information collection device such as a camera, an explicit and prominent mark is set to inform that the personal information collection range has been entered and the personal information will be collected. If the person voluntarily enters the collection range, it is regarded as the consent to collect the personal information. Or, at the device for processing personal information, the personal information processing rules are informed by using obvious marks / information, and the personal authorization is obtained by means of pop-up information or asking the person to upload the personal information by himself / herself. The personal information processing rules can include the personal information processor, the processing purpose of personal information, the processing method and the type of processed personal information.

[0023] For details, please refer to the description of the following drilling method embodiments of the index data of the present application.

[0024] Please refer to Figure 1 , Figure 1 is a flowchart of the first embodiment of the paperboard folding and bursting performance test method of the present application. The first embodiment of the paperboard folding and bursting performance test method of the present application will be described in detail below.

[0025] S110: obtaining a first test paper sample;

[0026] In this embodiment, the first test paper sample is obtained from the same batch of paper samples to be tested, and the first test paper sample is used for subsequent testing to obtain the bursting index of the batch of test paper samples.

[0027] S120: indenting the first test paper sample to obtain the bursting index of the first test paper sample and the indentation coefficient corresponding to the bursting index;

[0028] In the embodiment, the first test paper sample is placed horizontally on the indentation tester test table, the distance between the two pressure wheels of the indentation tester is adjusted, the paper sample passes through the pressure wheels of the indentation tester, and the indentation corresponding to the different wheel distances is obtained. Whether the indentation has a coating / fiber layer burst is observed, and the burst index is obtained by taking the indentation distance of the burst critical point as the reading. Further, the indentation coefficient of the indentation tester corresponding to the burst index of the first test paper sample is obtained.

[0029] In other embodiments, different batches of first test paper samples can have different thicknesses, and the indentation tester adopts different blade thicknesses and groove widths for different thicknesses of the first test paper sample. The application does not limit the blade thickness and groove width. Preferably, when the thickness of the first test paper sample is greater than or equal to 200 microns and less than 270 microns, a blade thickness of 0.71 microns and a groove width of 1.0 microns are used; when the thickness of the first test paper sample is greater than or equal to 270 microns and less than 300 microns, a blade thickness of 0.71 microns and a groove width of 1.2 microns are used; when the thickness of the first test paper sample is greater than or equal to 300 microns and less than 490 microns, a blade thickness of 0.71 microns and a groove width of 1.4 microns are used; when the thickness of the first test paper sample is greater than or equal to 490 microns and less than 580 microns, a blade thickness of 1.05 microns and a groove width of 1.8 microns are used; and when the thickness of the first test paper sample is greater than or equal to 580 microns and less than 700 microns, a blade thickness of 1.05 microns and a groove width of 2.0 microns are used.

[0030] In other embodiments, the first test paper sample is also cut before indentation to a suitable size for indentation testing. Preferably, the shape is a square, and the size is 13 cm x 13 cm.

[0031] S130: Obtain a second test paper sample, and the second test paper sample has at least two;

[0032] In the embodiment, at least two second test paper samples of the same batch as the first test paper sample are obtained. One of the second test paper samples is subjected to indentation under the indentation condition corresponding to the burst index of the batch of paper samples, and then subjected to stiffness testing to obtain the stiffness data of the second test paper sample after indentation. Another second test paper sample is not subjected to indentation and subjected to stiffness testing to obtain the stiffness data of the second test paper sample without indentation as a control of the stiffness data after indentation.

[0033] In other embodiments, multiple second test paper samples are obtained, and some of the second test paper samples are subjected to indentation, and the other second test paper samples are not subjected to indentation.

[0034] S140: Indent one of the second test paper samples with the indentation coefficient;

[0035] In the embodiment, the second test paper sample is indented by the indentation coefficient corresponding to the burst index of the first test paper sample in S120, and the second test paper sample after indentation is obtained.

[0036] In other embodiments, a plurality of second test paper samples are obtained, and some of the second test paper samples are indented by the indentation coefficient corresponding to the burst index, and the second test paper samples after indentation are obtained, and the other second test paper samples are not indented.

[0037] S150: performing stiffness test on the second test paper sample after indentation to obtain stiffness data of the second test paper sample after indentation;

[0038] In the embodiment, the stiffness test on the second test paper sample after indentation includes the test on the bending resistance or the bending stiffness of the second test paper sample after indentation. The test angle of the bending resistance or the bending stiffness is not limited in the present application. Further, the stiffness test data of the second test paper sample after indentation is obtained.

[0039] Preferably, the stiffness test on the second test paper sample after indentation can be the test on the bending stiffness at 15 degrees or the test on the bending stiffness at 90 degrees or the test on the bending resistance at 90 degrees.

[0040] S160: performing stiffness test on the second test paper sample without indentation to obtain stiffness data of the second test paper sample without indentation;

[0041] In the embodiment, the stiffness test on the second test paper sample without indentation includes the test on the bending resistance or the bending stiffness of the second test paper sample without indentation, and the test method and the test angle are the same as those of the second test paper sample after indentation in S150. Further, the stiffness test data of the second test paper sample without indentation is obtained.

[0042] Preferably, the stiffness test on the second test paper sample without indentation can be the test on the bending stiffness at 15 degrees or the test on the bending stiffness at 90 degrees or the test on the bending resistance at 90 degrees, so as to keep consistent with the stiffness test conditions of the second test paper sample after indentation in S150.

[0043] S170: calculating the folding factor of the second test paper sample according to the stiffness data of the second test paper sample after indentation and the stiffness data of the second test paper sample without indentation;

[0044] In the embodiment, the calculation method of the folding factor is specifically: subtracting the stiffness data value of the second test paper sample after indentation obtained in S150 from the stiffness test data value of the second test paper sample without indentation obtained in S160, then dividing by the stiffness test data value of the second test paper sample without indentation obtained in S160, and finally multiplying by 100%, that is, the folding factor of the second test paper sample is obtained.

[0045] In the embodiment, the folding factor represents the degree of reduction of stiffness / bending resistance of the paperboard during indentation. If more than half of the force can be released, the core layer will slide, releasing the force on the surface layer, which can meet the key indicator of preventing burst after processing. If the change is too small, it means that the stiffness / bending resistance of the paperboard after indentation and folding is still retained, which increases the possibility of paper surface burst. Therefore, the folding factor is preferably greater than 50%.

[0046] Further, after obtaining the preferred folding factor, the corresponding indentation condition (knife thickness * slot width) and burst index are selected, the depth of the burst index (indentation coefficient) is measured, and the actual processing factory is combined to select the appropriate post-processing indentation condition to avoid burst problems caused by inappropriate indentation condition selection during processing.

[0047] The embodiment obtains the stiffness test data value of the test paper sample without indentation and the test paper sample after indentation by performing stiffness test, further calculates the folding factor under different indentation conditions, selects the indentation condition corresponding to the preferred folding factor, and thus provides selectable parameters for subsequent processing.

[0048] Please refer to Figure 2 , Figure 2 is a flowchart of the second embodiment of the paperboard burst resistance performance test method of the application. The second embodiment of the paperboard burst resistance performance test method of the application is described in detail below.

[0049] S210: obtaining a first test paper sample;

[0050] In the embodiment, the step S210 is the same as the step S110 in the first embodiment of the application, and will not be described here.

[0051] S220: performing horizontal indentation and vertical indentation on the first test paper sample, respectively, to obtain horizontal burst index and vertical burst index of the first test paper sample, and horizontal indentation coefficient corresponding to the horizontal burst index and vertical indentation coefficient corresponding to the vertical burst index;

[0052] In the embodiment, the step S220 is similar to the step S120 in the first embodiment of the application, and will not be described here.

[0053] The difference between the embodiment and the step S120 in the first embodiment is that the first test paper sample is pressed twice in the embodiment, that is, a horizontal press mark and a vertical press mark. The first test paper sample is square or cut into square, and the horizontal press mark and the vertical press mark are parallel to two adjacent sides of the first test paper sample.

[0054] In the embodiment, the horizontal press mark and the vertical press mark are used to test different first test paper samples to avoid mutual influence.

[0055] S230: Obtain a second test paper sample, and the second test paper sample includes at least two pieces;

[0056] In the embodiment, the step S230 is the same as the step S130 in the first embodiment of the application, and details are not repeated here.

[0057] S240: Print ink on a first surface of the second test paper sample, and make the ink evenly distributed on the first surface of the test paper sample, and dry the second test paper sample after printing ink;

[0058] In the embodiment, in order to more clearly observe the burst situation of the second test paper sample, ink is printed on one surface of the second test paper sample, and the ink printed in the embodiment is blue ink. Further, the ink is dried to facilitate observation of the burst situation of the paper sample after subsequent pressing.

[0059] In other embodiments, the ink printed on the second test paper sample can also be another color, for example, red.

[0060] S250: Press one second test paper sample in a horizontal direction with a horizontal press mark coefficient, and press another second test paper sample in a vertical direction with a vertical press mark coefficient;

[0061] In the embodiment, the horizontal press mark coefficient corresponding to the horizontal burst index obtained in the step S220 and the vertical press mark coefficient corresponding to the vertical burst index are used to press two second test paper samples respectively, to obtain a second test paper sample pressed in the horizontal direction and a second test paper sample pressed in the vertical direction.

[0062] In other embodiments, a second test paper sample is indented with a first indentation coefficient, and another second test paper sample is indented in the longitudinal direction with a second indentation coefficient, wherein the first indentation coefficient is greater than the transverse indentation coefficient, and the second indentation coefficient is greater than the longitudinal indentation coefficient. Further, in the case of multiple second test paper samples, the multiple second test paper samples are indented with a first indentation coefficient, a second indentation coefficient, and a third indentation coefficient, respectively. Preferably, the first indentation coefficient is the transverse indentation coefficient, the second indentation coefficient is the transverse indentation coefficient plus 0.2, and the third indentation coefficient is the transverse indentation coefficient plus 0.4. Preferably, the first indentation coefficient is the longitudinal indentation coefficient, the second indentation coefficient is the longitudinal indentation coefficient plus 0.2, and the third indentation coefficient is the longitudinal indentation coefficient plus 0.4. Through the test of multiple sets of indentation coefficients, the second test paper samples after indentation under different conditions are obtained, providing more samples for subsequent stiffness testing to obtain more data.

[0063] S260: The second test paper sample after indentation with the transverse indentation coefficient is subjected to stiffness testing at a first angle to obtain the transverse stiffness data of the second test paper sample after indentation; and the second test paper sample after indentation with the longitudinal indentation coefficient is subjected to stiffness testing at the first angle to obtain the longitudinal stiffness data of the second test paper sample after indentation.

[0064] In this embodiment, the second test paper sample after transverse indentation and the second test paper sample after longitudinal indentation in S250 are subjected to stiffness testing, wherein the stiffness testing includes testing the bending resistance of the second test paper sample after indentation or bending stiffness testing. The testing angle of the bending resistance or the bending stiffness is a first angle, and the first angle is preferably an angle of 15 to 90 degrees. Further, the stiffness testing data of the second test paper sample after indentation is obtained.

[0065] S270: The unindented second test paper sample is subjected to transverse stiffness testing and longitudinal stiffness testing to obtain the transverse stiffness data and the longitudinal stiffness data of the unindented second test paper sample, respectively.

[0066] In this embodiment, the unindented second test paper sample is subjected to transverse stiffness testing and longitudinal stiffness testing to obtain the transverse stiffness data and the longitudinal stiffness data of the unindented second test paper sample, respectively, wherein the conditions for stiffness testing of the unindented second test paper sample are the same as those for stiffness testing of the second test paper sample after indentation in S260.

[0067] S280: The transverse folding factor of the second test paper sample is calculated according to the transverse stiffness data of the second test paper sample after indentation and the transverse stiffness data of the unindented second test paper sample, and the longitudinal folding factor of the second test paper sample is calculated according to the longitudinal stiffness data of the second test paper sample after indentation and the longitudinal stiffness data of the unindented second test paper sample.

[0068] In the embodiment, the paper sample with transverse indentation and the paper sample with longitudinal indentation are calculated respectively by the same method of S170 in the first embodiment to obtain the transverse folding factor and the longitudinal folding factor, so as to enrich the data of the reference indentation condition.

[0069] Please refer to Figure 3 , Figure 3 is a structural schematic diagram of the computer device embodiment of the present application. The computer device 30 comprises a memory 301 and a processor 302 coupled with each other. The processor 302 is configured to execute program data stored in the memory 301 to implement the steps in any of the above method embodiments or the steps performed by the electrocardiograph corresponding to any of the above method embodiments. In addition to the above processor 302 and memory 301, the computer device 30 can also comprise a communication circuit, a display, a printing component, a data acquisition component, etc. according to requirements, which are not limited herein. In an embodiment, the communication circuit can be configured to communicate with other devices. In another embodiment, the display can be configured to display selection buttons, display target display information, etc. Correspondingly, the communication circuit can be configured to receive a selection operation of a user on the selection buttons. In yet another embodiment, the data acquisition component is configured to acquire first preset operation data and / or second preset operation data of the user, wherein the data acquisition component can be a voice acquisition component and / or an image acquisition component.

[0070] Specifically, the processor 302 is configured to control itself and the memory 301 to implement the steps in any of the above method embodiments for acquiring multi-lead electrocardio data. The processor 302 can also be referred to as a CPU (Central Processing Unit). The processor 302 can be an integrated circuit chip with processing capability. The processor 302 can also be a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. In addition, the processor 302 can be implemented by a plurality of integrated circuit chips.

[0071] Please refer to Figure 4 , Figure 4is a structural schematic block diagram of the storage medium embodiment of the present application, and the integrated units can be stored in the storage medium 400 if they are realized in the form of software function units and sold or used as independent products. Based on such understanding, the technical solutions of the present application or the whole or part of the technical solutions that essentially contribute to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes a plurality of instructions / computer programs for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method of each embodiment of the present application. The foregoing storage medium includes various media such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and computer devices such as a computer, a mobile phone, a notebook computer, a tablet computer, a camera, etc. having the above storage medium.

[0072] The execution process of the program data in the storage medium can be referred to the description of the index data drilling method embodiment of the present application, and will not be repeated here.

[0073] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method of testing the burst resistance of paperboard, characterized in that, The method comprises: obtaining a first test paper sample; indenting the first test paper sample to obtain a burst index of the first test paper sample and an indentation coefficient corresponding to the burst index; obtaining a second test paper sample, the second test paper sample comprising at least two paper samples; indenting one of the second test paper samples with the indentation coefficient; conducting a stiffness test on the second test paper sample after indentation to obtain stiffness data of the second test paper sample after indentation; conducting a stiffness test on the second test paper sample without indentation to obtain stiffness data of the second test paper sample without indentation; calculating a folding factor of the second test paper sample according to the stiffness data of the second test paper sample after indentation and the stiffness data of the second test paper sample without indentation; wherein the first test paper sample and the second test paper sample are paper samples of the same batch; the step of indenting the first test paper sample to obtain a burst index of the first test paper sample and an indentation coefficient corresponding to the burst index further comprises: conducting a horizontal indentation and a vertical indentation on the first test paper sample respectively; obtaining a horizontal burst index and a vertical burst index of the first test paper sample and a horizontal indentation coefficient corresponding to the horizontal burst index and a vertical indentation coefficient corresponding to the vertical burst index respectively; wherein the horizontal indentation and the vertical indentation are parallel to two edges of the first test paper sample respectively; wherein the folding factor is calculated by subtracting the stiffness data of the second test paper sample after indentation from the stiffness data of the second test paper sample without indentation and then dividing the result by the stiffness data of the second test paper sample without indentation; the step of obtaining a second test paper sample further comprises: printing ink on a first surface of the second test paper sample and making the ink evenly distributed on the first surface of the second test paper sample; drying the second test paper sample after printing ink; the step of indenting one of the second test paper samples with the indentation coefficient further comprises: conducting a horizontal indentation on the second test paper sample with the horizontal indentation coefficient; conducting a vertical indentation on another second test paper sample with the vertical indentation coefficient; the step of conducting a horizontal indentation on the second test paper sample with the horizontal indentation coefficient further comprises: conducting a horizontal indentation on the second test paper sample with a first indentation coefficient; wherein the first indentation coefficient is greater than the horizontal indentation coefficient; the step of conducting a vertical indentation on another second test paper sample with the vertical indentation coefficient further comprises: conducting a vertical indentation on the second test paper sample with a second indentation coefficient; wherein the second indentation coefficient is greater than the vertical indentation coefficient.

2. The method of claim 1, wherein, the step of conducting a stiffness test on the second test paper sample after indentation to obtain stiffness data of the second test paper sample after indentation further comprises: conducting a stiffness test at a first angle on the second test paper sample after indentation with the first indentation coefficient to obtain horizontal stiffness data of the second test paper sample after indentation; performing a stiffness test on the second test paper sample after indentation at a first angle to obtain longitudinal stiffness data of the second test paper sample after indentation.

3. The method of claim 2, wherein, The step of performing a stiffness test on the second test paper sample after indentation to obtain stiffness data of the second test paper sample after indentation further comprises: performing a stiffness test on the second test paper sample after indentation at a second angle to obtain transverse stiffness data of the second test paper sample after indentation; performing a stiffness test on the second test paper sample after indentation at a second angle to obtain longitudinal stiffness data of the second test paper sample after indentation.

4. The method of claim 3, wherein, The step of performing a stiffness test on the second test paper sample without indentation to obtain stiffness data of the second test paper sample without indentation further comprises: performing a transverse stiffness test and a longitudinal stiffness test on the second test paper sample without indentation to obtain transverse stiffness data and longitudinal stiffness data of the second test paper sample without indentation, respectively.

5. The method of claim 4, wherein, The step of calculating the folding factor of the second test paper sample according to the stiffness data of the second test paper sample after indentation and the stiffness data of the second test paper sample without indentation further comprises: calculating a transverse folding factor of the second test paper sample according to the transverse stiffness data of the second test paper sample after indentation and the transverse stiffness data of the second test paper sample without indentation; calculating a longitudinal folding factor of the second test paper sample according to the longitudinal stiffness data of the second test paper sample after indentation and the longitudinal stiffness data of the second test paper sample without indentation.

6. A computer device, comprising: comprise: a processor; a storage connected to the processor, for storing a computer program executable on the processor; wherein the processor implements the method of any one of claims 1 to 5 when executing the computer program.

7. A storage medium, characterized by The storage medium has a computer program stored thereon, and the computer program is executed by the processor to implement the method of any one of claims 1 to 5.

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