A hydrogen peroxide chemical indicator card and a method of making the same

Abstract

The application relates to the technical field of sterilization, and discloses a hydrogen peroxide chemical indicating card and a preparation method thereof. The hydrogen peroxide chemical indicating card comprises a paper carrier, indicating ink, standard color ink and text information ink printed on different regions of a printing surface of the paper carrier, and a film layer covering the printing surface of the paper carrier. The paper carrier can penetrate hydrogen peroxide molecules and does not adsorb hydrogen peroxide molecules. The hydrogen peroxide chemical indicating card can effectively indicate the sterilization process, avoids the problem that the indicating ink pollutes the sterilized objects, and is safe and reliable in use in the sterilization field of medical instruments and the like.

Description

Technical Field

[0001] This invention relates to the field of sterilization technology, and in particular to a hydrogen peroxide chemical indicator card and its preparation method. Background Technology

[0002] A sterilizer is a device specifically designed to thoroughly kill or remove microorganisms such as bacteria, viruses, fungi, and their spores. Its core function is to destroy the survival structure or metabolic capacity of microorganisms through physical or chemical means, thereby eliminating their activity and ensuring that items or environments reach a sterile state. It is commonly used for the sterilization and disinfection of medical devices. According to the standards for medical device sterilization, each time an instrument is sterilized, a corresponding chemical indicator card must be placed inside the sterilizer. The chemical indicator card has indicator ink that displays the sterilization progress. Inside the sterilizer, as the sterilization process proceeds, the indicator ink changes color accordingly. When the indicator ink on the chemical indicator card turns a specific color that meets the sterilization requirements, the sterilization process can be considered complete.

[0003] While the indicator ink on chemical indicator cards indicates the sterilization process, it is itself a chemical substance. Since the chemical indicator cards and medical devices are both in the sterilizer, the ink can contaminate the environment inside the surgical instrument pack, and residual chemicals may harm the health of medical staff and patients through contact or aerosol transmission. Therefore, preventing chemical indicator cards from contaminating medical devices in the sterilizer is crucial to ensuring the safety and reliability of the sterilization process. Summary of the Invention

[0004] The purpose of this invention is to provide a hydrogen peroxide chemical indicator card and its preparation method, which can, to a certain extent, avoid contamination of the sterilized items by the ink drug during the use of the indicator card, and ensure the safety and reliability of sterilization by the sterilizer.

[0005] To solve the above-mentioned technical problems, the present invention provides a hydrogen peroxide chemical indicator card, comprising a paper-like carrier; indicator ink, standard color ink, and text information ink printed on different areas of the printed surface of the paper-like carrier; and a coating layer covering the printed surface of the paper-like carrier.

[0006] The paper-like carrier is a carrier that can penetrate hydrogen peroxide molecules but does not adsorb the hydrogen peroxide molecules.

[0007] In one optional embodiment of this application, the paper carrier is any one of Kunlun HYPAK carrier, Dison paper carrier, or Tyvek paper carrier.

[0008] In one optional embodiment of this application, the standard color ink is a UV ink.

[0009] In an alternative embodiment of the present application, the film layer is one of a PET film and a PE film or a composite film of the two films.

[0010] In an alternative embodiment of the present application, the indicating ink is an aqueous ink containing an aqueous acrylic resin, ethyl cellulose, triethylamine, ethanol, methyl red and PV3.

[0011] In an alternative embodiment of the present application, in the indicating ink, the weight percentage of the aqueous acrylic resin is 75.0%-85%, the weight percentage of the ethyl cellulose is 8.0%-10%, the weight percentage of the triethylamine is 4.0%-5.0%, the weight percentage of the ethanol is 4.5%-5.5%, the weight percentage of the methyl red is 0.3%-0.7%, and the weight percentage of the PV3 is 0.5%-1.5%.

[0012] A preparation method of a hydrogen peroxide chemical indicating card, for preparing the hydrogen peroxide chemical indicating card according to any one of the preceding items, the preparation method comprising:

[0013] printing the indicating ink, the standard color ink and the text information ink on different regions of the printed surface of the paper carrier, respectively;

[0014] covering a film layer on the printed surface of the paper carrier to obtain the hydrogen peroxide chemical indicating card.

[0015] In an alternative embodiment of the present application, the indicating ink is an aqueous ink;

[0016] printing the indicating ink, the standard color ink and the text information ink on different regions of the printed surface of the paper carrier, respectively, comprising:

[0017] printing the indicating ink, the standard color ink and the text information ink on the printed surface of the paper carrier in sequence by three different printing rollers of a flexographic printing device.

[0018] In an alternative embodiment of the present application, covering the film layer on the printed surface of the paper carrier comprises:

[0019] covering the film layer on the printed surface of the paper carrier;

[0020] subjecting the film layer to a heat-sealing treatment at 120-145°C opposite a set heat-sealing region on the printed surface, wherein the set heat-sealing region is a surface region of the printed surface of the paper carrier other than the region where the indicating ink is located.

[0021] In an alternative embodiment of the present application, the indicating ink, the standard color ink and the text information ink are printed on different regions of the printing surface of the paper carrier respectively, comprising:

[0022] In each unit region of the printing surface of the paper carrier, the indicating ink, the standard color ink and the text information ink are printed on different position regions respectively;

[0023] Correspondingly, after the film layer is covered on the printing surface of the paper carrier, the process of obtaining the hydrogen peroxide chemical indicating card comprises:

[0024] The paper carrier with the film layer covering the printing surface is cut according to each unit region to obtain the hydrogen peroxide chemical indicating card corresponding to each unit region.

[0025] The hydrogen peroxide chemical indicating card provided by the present application comprises a paper carrier, indicating ink, standard color ink and text information ink printed on different regions of the printing surface of the paper carrier, and a film layer covering the printing surface of the paper carrier, wherein the paper carrier is a carrier that can penetrate hydrogen peroxide molecules and does not adsorb hydrogen peroxide molecules.

[0026] The hydrogen peroxide chemical indicating card in the present application is provided with a film layer on the surface of the paper carrier printed with the indicating ink, which realizes the mutual isolation between the indicating ink and medical devices in the sterilizer, thereby effectively avoiding the problem that the indicating ink on the hydrogen peroxide indicating card pollutes the sterilized objects such as medical devices; on this basis, the paper carrier further adopts a carrier that can penetrate hydrogen peroxide molecules but does not adsorb hydrogen peroxide molecules, so that in the hydrogen peroxide sterilizer, hydrogen peroxide molecules can penetrate into the indicating card through the paper carrier and react with the indicating ink, thereby effectively realizing the indication of the sterilization process. As can be seen, the hydrogen peroxide chemical indicating card in the present application not only effectively indicates the sterilization process, but also further avoids the problem that the indicating ink pollutes the sterilized objects, which is beneficial to the safety and reliability of the hydrogen peroxide chemical indicating card in the sterilization field of medical devices. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0028] Figure 1An exploded structural schematic diagram of the hydrogen peroxide chemical indicating card provided in the embodiment of the present application;

[0029] Figure 2 A flowchart of the preparation method of the hydrogen peroxide chemical indicating card provided in the embodiment of the present application;

[0030] In the drawings: 100 is a paper carrier, 201 is indicating ink, 202 is standard color ink, 203 is text information ink, and 300 is a film layer. DETAILED DESCRIPTION

[0031] The hydrogen peroxide chemical indicating card is a card specially used in a hydrogen peroxide sterilizer, and the hydrogen peroxide sterilizer is a sterilizer using hydrogen peroxide as the main sterilization substance. Correspondingly, the indicating ink in the hydrogen peroxide chemical indicating card is ink that can chemically react with hydrogen peroxide.

[0032] In a conventional hydrogen peroxide chemical indicating card, the indicating ink is printed and attached on a paper carrier, and is directly exposed to the internal environment of the sterilizer. Although the indicating ink can effectively react with hydrogen peroxide in the sterilizer, the medicine in the indicating ink is inevitably volatilized in the sterilizer or directly contacts the sterilized object, thereby causing secondary pollution of the sterilized object by the indicating ink.

[0033] Therefore, the present application provides a hydrogen peroxide chemical indicating card and a preparation method of the indicating card, which can avoid pollution of the sterilized object by the indicating ink and ensure accurate reaction of the indicating ink to the sterilization process.

[0034] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0035] As shown in Figure 1 , an exploded structural schematic diagram of the hydrogen peroxide chemical indicating card provided in the embodiment of the present application. Figure 1

[0036] In a specific embodiment of the present application, the hydrogen peroxide chemical indicating card can include:

[0037] a paper carrier 100, indicating ink 201, standard color ink 202 and text information ink 203 printed on different regions of a printing surface of the paper carrier 100, and a film layer 300 covering the printing surface of the paper carrier 100. ​

[0038] The paper carrier 100 is a carrier that can be penetrated by hydrogen peroxide molecules and does not adsorb hydrogen peroxide molecules.

[0039] The paper carrier 100 in this embodiment is mainly used to carry the indicating ink 201, the standard color ink 202, and the text information ink 203, and is usually made of paper or similar materials. The printing surface of the paper carrier 100 is the surface on which the three inks are printed.

[0040] It can be understood that the indicating ink 201 is a key ink layer in the hydrogen peroxide chemical indicator card, which mainly contains a drug that can chemically react with hydrogen peroxide in a hydrogen peroxide sterilizer and change color. The standard color ink 202 is a color reference ink for the indicating ink 201. When the indicating ink 201 gradually changes to the same color as the standard color ink 202 due to chemical reaction with hydrogen peroxide, it indicates that the current sterilization process is complete. The text information ink 203 is an ink layer that provides textual descriptions of various information on the indicator card, such as the environment information to which the indicator card is applied and the type of sterilizer that can be indicated. It is a common ink layer in conventional indicator cards. In the current various sterilization indicator cards, the indicating ink 201, the standard color ink 202, and the text information ink 203 are basically required. Based on the different functions and types of the indicator card, the types of the indicating ink 201 and the standard color ink 202 can be different. For example, the standard color ink 202 can include multiple different ink layers with sequentially changing colors and sequentially arranged distribution. Each color is set based on the color of the indicating ink 201 at different sterilization stages, so that each different standard color ink 202 can represent a different progress of the sterilization process. For example, the standard color ink 202 includes a first standard color ink, a second standard color ink, and a third standard color ink. When the color of the indicating ink 201 is the same as the color of the first standard color ink, it indicates that the sterilization process has progressed by 30%. When the color of the indicating ink 201 is the same as the color of the second standard color ink, it indicates that the process has progressed by 60%. When the color of the indicating ink 201 is the same as the color of the third standard color ink, it indicates that the process is complete. Similarly, the information content shown in the text information ink 203 of different indicator cards is also different, which will not be listed in detail in this embodiment.

[0041] In addition, the indicating ink 201, the standard color ink 202, and the text information ink 203 are printed on the same surface of the paper carrier 100, i.e., they are all printed on the printing surface of the paper carrier 100, or in other words, the surface of the paper carrier 100 on which the three ink layers are printed is the printing surface.

[0042] On the basis of printing the three ink layers on the printing surface of the paper carrier 100, a film layer 300 is further arranged on the printing surface of the paper carrier 100; obviously, the film layer 300 should cover the paper carrier 100 and cover the surfaces of the ink layers such as the indicator ink 201, the standard color ink 202 and the text information ink 203, so that the three ink layers are encapsulated between the paper carrier 100 and the film layer 300, that is, the three ink layers are isolated from the sterilization environment in the sterilizer, thereby avoiding the drug in the indicator ink 201 from leaking out and further polluting the sterilized articles.

[0043] On this basis, if the indicator ink 201 is completely isolated from the sterilization substance in the sterilizer, obviously, the corresponding chemical reaction cannot occur, and the sterilization process cannot be indicated. Based on this, the paper carrier 100 used in the embodiment further uses a carrier that can penetrate hydrogen peroxide molecules and does not adsorb hydrogen peroxide molecules. It can be understood that the paper carrier 100 in the present application is a semi-permeable membrane layer structure that can penetrate hydrogen peroxide molecules, that is, when the indicator card is in the sterilizer, hydrogen peroxide molecules can penetrate the paper carrier 100 into the space between the paper carrier 100 and the film layer 300, thereby being able to fully react with the indicator ink 201, thereby indicating the sterilization process. As can be seen, the paper carrier 100 and the film layer 300 that can penetrate hydrogen peroxide molecules in the present application construct a space that isolates the indicator ink 201 and the sterilization environment in the sterilizer from each other and does not isolate hydrogen peroxide from each other, thereby enabling the indicator ink 201 in the indicator card to indicate the sterilization process and avoid polluting the sterilized articles, effectively improving the reliability and safety of the indicator card, and also being beneficial to the safety and reliability of the sterilizer.

[0044] It should be noted that the paper carrier 100 in the embodiment requires not to adsorb hydrogen peroxide molecules in order to avoid excessive adsorption of hydrogen peroxide molecules on the paper carrier 100, thereby reducing the amount of hydrogen peroxide molecules penetrating into the space between the paper carrier 100 and the film layer 300, thereby hindering the chemical reaction between hydrogen peroxide molecules and the indicator ink 201. The paper carrier 100 that meets the requirements of the embodiment can be any one of the KOLON HYPAK carrier, the DIXON paper carrier or the TYVEK paper carrier.

[0045] The KOLON HYPAK carrier is made of polyethylene by jetting and hot pressing, and has natural colors of white, two kinds of hard structure like paper and soft structure like cloth; it is strong and tough, resistant to tearing, puncturing, folding and temperature difference, light but strong, and combines the advantages of paper, fabric and film.

[0046] The Dyson paper carrier is a three-dimensional net structure formed by heating high-density polyethylene to a molten state, extruding through special spinneret holes, forming ultra-fine continuous long fibers with a diameter of 0.1-10 microns, and then bonding by hot pressing. It has super strong toughness and excellent tear and puncture resistance, can withstand extrusion and friction during transportation, allows sterilization gas to penetrate, meets the medical sterilization needs, and is waterproof and breathable.

[0047] The Teflon paper carrier is made of 100% high-density polyethylene by flash spinning process, combining the characteristics of paper, film and cloth.

[0048] The materials of the above three different types of paper carrier 100 are common materials, which can meet the requirements of the paper carrier 100 in this application.

[0049] In addition, the film layer 300 in this application should be a transparent and colorless film structure. In actual application, the film layer 300 can use PET film (polyethylene terephthalate film) or PE film, or a composite film formed by PET film and PE film (polyethylene film). In short, as long as the film layer 300 meets the sealing requirements of the indicating ink 201 and is transparent in color.

[0050] Based on the above discussion, the indicating ink 201 in this application can preferentially use water-based ink. On the one hand, it reduces the pollution of the indicating ink 201 and ensures the safety of the indicating card production workshop. On the other hand, it can make the indicating ink 201 be printed together with the standard color ink 202 and the text information ink 203 by the flexographic printing equipment, without the need to transfer the paper carrier 100 to the flexographic printing equipment after printing the indicating ink 201 by the screen printing method, which eliminates the problem of transferring the paper carrier 100 between different types of printing equipment, ensures the safety of the staff, and improves the printing efficiency.

[0051] The indicating ink 201 in this application can be a water-based ink containing water-based acrylic resin, ethyl cellulose, triethylamine, ethanol, methyl red and PV3. PV3 refers to pigment violet 3, which belongs to "β-naphthol azo pigment" in Azo Pigments. It contains "-N=N-" (azo bond) as a chromophore group and naphthol structure as a coupling component in its molecular structure, which makes it show bright blue-purple tone.

[0052] Further, the content of each component in the indicating ink 201 is indicated as follows: the weight percentage of the aqueous acrylic resin is 75.0% to 85%, the weight percentage of the ethyl cellulose is 8.0% to 10%, the weight percentage of the triethylamine is 4.0% to 5.0%, the weight percentage of the ethanol is 4.5% to 5.5%, the weight percentage of the methyl red is 0.3% to 0.7%, and the weight percentage of the PV3 is 0.5% to 1.5%. For example, in an alternative example, the indicating ink 201 can include 80% of the aqueous acrylic resin, 9% of the ethyl cellulose, 4.5% of the triethylamine, 5.0% of the ethanol, 0.5% of the methyl red, and 1.0% of the PV3.

[0053] In addition, the standard color ink 202 in the present application is a UV ink (Ultraviolet Curing Ink), which is a special ink that can be rapidly cured and dried through a chemical polymerization reaction induced by ultraviolet (UV) irradiation. The UV ink is different from traditional inks that rely on solvent evaporation or oxidation for drying. The core advantage of the UV ink lies in its “instant curing, low VOC (organic matter) emission, and high performance adhesion”. Moreover, the UV ink has the characteristic of no organic matter emission, thereby reducing the pollution caused by the production of the indicator card.

[0054] In summary, the hydrogen peroxide chemical indicator card in the present application is provided with a film layer on the surface of the paper carrier on which the indicating ink is printed, so as to realize the mutual isolation between the indicating ink and the medical devices and the like in the sterilizer, thereby effectively avoiding the problem that the indicating ink on the hydrogen peroxide indicator card pollutes the sterilized objects such as medical devices. On this basis, the paper carrier further adopts a carrier that can penetrate hydrogen peroxide molecules but does not adsorb hydrogen peroxide molecules. Therefore, in the hydrogen peroxide sterilizer, hydrogen peroxide molecules can penetrate through the paper carrier into the inside of the indicator card and react with the indicating ink, thereby effectively realizing the indication of the sterilization process. As can be seen, the hydrogen peroxide chemical indicator card in the present application can effectively indicate the sterilization process and further avoid the problem that the indicating ink pollutes the sterilized objects, which is beneficial to the safety and reliability of the hydrogen peroxide chemical indicator card in the sterilization field of medical devices and the like.

[0055] Based on the above discussion, the present application further provides an embodiment of a preparation method of a hydrogen peroxide chemical indicator card for preparing the hydrogen peroxide chemical indicator card as described in any one of the above embodiments. As shown in the embodiment, Figure 2 the preparation method can include:

[0056] S1: printing the indicating ink, the standard color ink, and the text information ink on different regions of the printing surface of the paper carrier, respectively;

[0057] S2: covering the film layer on the printing surface of the paper carrier to obtain the hydrogen peroxide chemical indicator card.

[0058] In the embodiment, on the basis of printing the indicating ink, the standard color ink and the text information ink on the paper carrier, a film layer is further formed on the printed surface of the paper carrier, so that the three ink layers are collectively encapsulated between the paper carrier and the film layer, and the indicating card is formed, in which the ink layer is isolated from the environment. The chemical reaction between the indicating ink and hydrogen peroxide molecules occurs to change color, so as to realize effective indication of the ink layer.

[0059] Further, the indicating ink in the embodiment can be water-based ink, and the process of printing the indicating ink, the standard color ink and the text information ink can include:

[0060] The indicating ink, the standard color ink and the text information ink are sequentially printed on the printed surface of the paper carrier by three different printing rollers on the flexographic printing equipment.

[0061] In the embodiment, the indicating ink, the standard color ink and the text information ink are sequentially printed on the paper carrier by three different printing rollers in the same flexographic printing equipment. Compared with printing the three ink layers by using different types of printing equipment, the same printing equipment is used to print the three different ink layers in the embodiment, so that the conversion process of the paper carrier in the printing process can be avoided, the pollution of the paper carrier caused by manual transfer of the paper carrier can be avoided, and the problem that the ink substance is inhaled by the staff and affects the health of the staff can be avoided. Moreover, the printing efficiency of the ink layer is improved to a certain extent.

[0062] Based on the above description, after the indicating ink, the standard color ink and the text information ink are printed on the paper carrier, the printed surface of the paper carrier can be further laminated, which can include:

[0063] The film layer is laminated on the printed surface of the paper carrier.

[0064] The film layer is subjected to a laminating treatment at 120°C-145°C opposite the set laminating area on the printed surface; wherein the set laminating area is a surface area on the printed surface of the paper carrier except the area where the indicating ink is located.

[0065] In the process of laminating the surface of the paper carrier in the application, only the film layer and the area on the paper carrier except the indicating ink are laminated. On the basis of realizing the isolation and encapsulation of the indicating ink, the drug property of the indicating ink is avoided from being damaged by high temperature.

[0066] In addition, in the actual preparation of the indicating card, the ink layer can be printed in large quantities on a large area of the paper carrier, so as to speed up the preparation efficiency of the indicating card. For example, the process of printing the ink layer on the paper carrier can include:

[0067] In each unit region on the printed surface of the paper carrier, a group of indicating inks, standard color inks and text information inks are printed in different position regions respectively;

[0068] Correspondingly, after the film layer is covered on the printed surface of the paper carrier, the process of obtaining the hydrogen peroxide chemical indicating card comprises:

[0069] The paper carrier with the film layer covered on the printed surface is cut according to each unit region, so that the hydrogen peroxide chemical indicating card is formed in each unit region.

[0070] It can be understood that the area size of each unit region on the paper carrier in the embodiment is the area size of a single hydrogen peroxide chemical indicating card. In the embodiment, a group of indicating inks, standard color inks and text information inks are printed in each unit region, and a large-area film layer is set on the printed surface of the entire paper carrier at one time, so that the film layer covers the surface of the entire large-area paper carrier. Finally, the paper carrier with the film layer is cut according to each unit region, so that each unit region is cut and separated from each other, and each unit region forms a hydrogen peroxide chemical indicating card.

[0071] It should be noted that the relational terms herein such as first and second are used only to differentiate one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between or among the entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. Additionally, the above technical solutions provided by the embodiments of the present application have not been described in detail, as excessive description may be provided.

[0072] The principles and implementation manners of the present application are described by using specific examples in the present application. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be noted that, for those skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A hydrogen peroxide chemical indicator card, characterized in that, Includes a paper-like carrier; indicator inks, standard color inks, and text information inks printed on different areas of the printed surface of the paper-like carrier; and a coating layer covering the printed surface of the paper-like carrier. The paper-like carrier is a carrier that can penetrate hydrogen peroxide molecules but does not adsorb the hydrogen peroxide molecules. The coating layer is any one of PET film and PE film or a composite film of the two films; The indicator ink is a water-based ink containing water-based acrylic resin, ethyl cellulose, triethylamine, ethanol, methyl red, and PV3; In the indicator ink, the weight percentage of the water-based acrylic resin is 75.0%~85%, the weight percentage of the ethyl cellulose is 8.0%~10%, the weight percentage of the triethylamine is 4.0%~5.0%, the weight percentage of the ethanol is 4.5%~5.5%, the weight percentage of the methyl red is 0.3%~0.7%, and the weight percentage of the PV3 is 0.5%~1.5%.

2. The hydrogen peroxide chemical indicator card as described in claim 1, characterized in that, The paper-like carrier is any one of Kunlun HYPAK carrier, Dison paper carrier, or Tyvek paper carrier.

3. The hydrogen peroxide chemical indicator card as described in claim 1, characterized in that, The standard color ink is a UV ink.

4. A method for preparing a hydrogen peroxide chemical indicator card, characterized in that, The method for preparing the hydrogen peroxide chemical indicator card as described in any one of claims 1 to 3 comprises: Indicator ink, standard color ink, and text information ink are printed in different areas on the printing surface of the paper carrier. A coating layer is applied to the printed surface of the paper-like carrier to obtain a hydrogen peroxide chemical indicator card.

5. The method for preparing the hydrogen peroxide chemical indicator card as described in claim 4, characterized in that, The indicator ink is a water-based ink; Indicator ink, standard color ink, and text information ink are printed in different areas of the printed surface of the paper carrier, including: The indicator ink, the standard color ink, and the text information ink are printed sequentially on the printing surface of the paper carrier using three different printing rollers on a flexographic printing machine.

6. The method for preparing the hydrogen peroxide chemical indicator card as described in claim 4, characterized in that, Covering the printed surface of the paper-like carrier with a laminating layer includes: The coating layer is applied to the printed surface of the paper-like carrier; The coating layer is heat-bonded at 120°C-145°C to the designated heat-bonding area on the printed surface; wherein, the designated heat-bonding area is the surface area of ​​the printed surface of the paper carrier other than the area where the indicator ink is located.

7. The method for preparing the hydrogen peroxide chemical indicator card as described in claim 4, characterized in that, Indicator ink, standard color ink, and text information ink are printed in different areas of the printed surface of the paper carrier, including: In each unit area on the printing surface of the paper carrier, the indicator ink, the standard color ink, and the text information ink are printed in different positions. Accordingly, the process of obtaining a hydrogen peroxide chemical indicator card after covering the printed surface of the paper-like carrier with a coating layer includes: The paper carrier with the coating layer on the printed surface is cut according to each of the unit regions to obtain the hydrogen peroxide chemical indicator card corresponding to each of the unit regions.

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