Laser engraving label manufacturing method and laser engraving label

Abstract

The invention discloses a laser engraving label manufacturing method and a laser engraving label. The laser engraving label manufacturing method comprises an engraving coating preparation process, a contrast coating preparation process and a label preparation process. The label preparation process comprises the steps that a release base material is prepared, the release base material is coated with engraving paint, and a laser engraving film attached to the release base material is formed through baking; preparing a label base material, coating the label base material with the contrast coating, and baking to form a contrast coating film attached to the label base material; a laser engraving film is compounded below a contrast coating film, release paper is arranged on the upper end face of a label base material through a bonding layer, and the prepared laser engraving label has good weather resistance, wear resistance and corrosion resistance, can keep stable anti-fake performance in various severe environments, and is high in anti-fake performance. Therefore, the laser label is not easy to damage or lose efficacy in a long-term use process, and a lasting and reliable anti-counterfeiting guarantee is provided for commodities.

Description

Technical Field

[0001] The invention relates to the field of label production and preparation, and in particular to a laser engraving label production method and a laser engraving label. Background Art

[0002] With the continuous development of informatization, object labeling is becoming more and more important. For example, electronic equipment, machines and cars all need labels to display. The laser-engravable labels currently on the market are mainly used to replace traditional metal labels. This label uses laser engraving technology to make the label difficult to be tampered with and the label material difficult to be torn off. Compared with traditional metal labels, flexible labels have the advantages of low cost and good anti-tampering performance.

[0003] However, due to the difficult technical barriers, there are only a few domestic companies that can produce laser engraving materials. Compared with imported laser labels, domestic laser labels have insufficient weather resistance, wear resistance and corrosion resistance. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method for making a laser engraved label, and the prepared laser engraved label has good weather resistance, wear resistance and corrosion resistance.

[0005] The invention also provides a laser engraving label.

[0006] The laser engraving label manufacturing method according to the first aspect of the present invention includes: an engraving coating preparation process, a comparison coating preparation process and a label preparation process;

[0007] The engraving coating preparation process is used to prepare the engraving coating, and the contrast coating process is used to prepare the contrast coating, the engraving coating comprises polymethacrylate and a first color paste, the contrast coating comprises polymethacrylate and a second color paste, the first color paste and the second color paste have different colors, and at least one of the engraving coating and the contrast coating comprises a modified acrylic resin;

[0008] The label preparation process includes the following steps:

[0009] Preparing a release substrate, applying the engraving coating to the release substrate to form an engraving coating layer on an end surface of the release substrate, and baking the engraving coating layer to form a laser engraving film attached to the release substrate;

[0010] Preparing a label substrate, applying the contrast coating to the label substrate to form a contrast coating layer on the lower end surface of the label substrate, and baking the contrast coating layer to form a contrast coating film attached to the label substrate;

[0011] The laser engraving film is compounded under the comparative coating film, and a release paper is arranged on the upper end surface of the label substrate through an adhesive layer to prepare a laser engraving label.

[0012] The laser engraving label production method according to the embodiment of the present invention has at least the following beneficial effects: the prepared laser engraving label has good weather resistance, wear resistance and corrosion resistance, and can maintain stable anti-counterfeiting performance in various harsh environments, so that the laser label is not easily damaged or invalidated during long-term use, providing a long-lasting and reliable anti-counterfeiting protection for the goods.

[0013] According to some embodiments of the present invention, the first color paste is a black paste, and the second color paste is a white paste.

[0014] According to some embodiments of the present invention, the white paste includes TiO 2 .

[0015] According to some embodiments of the present invention, the black paste includes carbon black.

[0016] According to some embodiments of the present invention, the engraving coating contains modified acrylic resin and polymethyl methacrylate, and the engraving coating includes the following components by mass: 30-90 parts of modified acrylic resin, 5-30 parts of polymethyl methacrylate, 5-10 parts of polyester polyol resin, 5-10 parts of epoxy resin, 10-40 parts of first color paste, 0.1-2 parts of ultraviolet absorber, 0.1-2 parts of antioxidant, 1-10 parts of laser engraving agent, 0.01-0.5 parts of leveling agent, and 10-20 parts of organic solvent.

[0017] According to some embodiments of the present invention, the comparative coating contains polymethyl methacrylate, and the comparative coating includes the following components by mass: 50-80 parts of epoxy resin, 5-20 parts of polymethyl methacrylate, 5-20 parts of polyurethane resin, 1-10 parts of dispersant, 0.01-0.5 parts of leveling agent, and 20-40 parts of second color paste.

[0018] According to some embodiments of the present invention, after the laser engraving film is compounded with the comparative coating film, the release substrate is torn off, and a transparent layer is disposed on the outer surface of the laser engraving film, wherein the transparent layer comprises polymethacrylate.

[0019] According to some embodiments of the present invention, the transparent layer further comprises a pigment absorbing radiation in the non-visible region.

[0020] According to some embodiments of the present invention, the release substrate is a PET release film.

[0021] According to some embodiments of the present invention, the label substrate is a fragile paper material or a polyester PET material.

[0022] According to some embodiments of the present invention, the adhesive layer is a pressure-sensitive adhesive layer.

[0023] According to the laser engraved label of the second aspect of the present invention, the laser engraved label is made by the laser engraved label making method of any one of the first aspect of the present invention.

[0024] The laser engraved label according to the embodiment of the present invention has at least the following beneficial effects: the laser engraved label has good weather resistance, wear resistance and corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 The figure is a schematic diagram of the structure of a laser engraved label according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] Label substrate 100 , laser engraving film 200 , contrast coating film 300 , adhesive layer 400 , release paper 500 , transparent layer 600 . DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] The laser engraving label manufacturing method according to the embodiment of the present invention comprises: an engraving coating preparation process, a comparison coating preparation process and a label preparation process;

[0034] The engraving coating preparation process is used to prepare the engraving coating, and the comparison coating process is used to prepare the comparison coating, the engraving coating comprises polymethacrylate and a first color paste, the comparison coating comprises polymethacrylate and a second color paste, the first color paste and the second color paste have different colors, and at least one of the engraving coating and the comparison coating comprises a modified acrylic resin;

[0035] The label preparation process includes the following steps:

[0036] Prepare a release substrate, apply an engraving coating to the release substrate, form an engraving coating layer on the end surface of the release substrate, and bake the engraving coating layer to form a laser engraving film 200 attached to the release substrate;

[0037] Prepare a label substrate 100, apply a contrast coating to the label substrate 100, form a contrast coating layer on the lower end surface of the label substrate 100, and bake the contrast coating layer to form a contrast coating film 300 attached to the label substrate 100;

[0038] The laser engraving film 200 is compounded to the lower side of the comparative coating film 300 , and a release paper 500 is disposed on the upper end surface of the label substrate 100 via an adhesive layer 400 , so as to obtain a laser engraving label.

[0039] The laser engraved labels produced have good weather resistance, wear resistance and corrosion resistance, and can maintain stable anti-counterfeiting performance in various harsh environments, making the laser labels not easily damaged or invalidated during long-term use, providing long-lasting and reliable anti-counterfeiting protection for the products.

[0040] Specifically, the laser engraving film 200 and the comparative coating film 300 both contain polymethacrylate material, which has good optics, toughness, processability and weather resistance, so that the laser engraving label has good weather resistance, wear resistance and corrosion resistance.

[0041] Moreover, the laser engraving film 200 and the contrast coating film 300 are configured with first color paste and second color paste of different colors, which can have a better display effect after laser engraving and achieve a better identification anti-counterfeiting effect.

[0042] Furthermore, at least one of the engraving coating and the comparison coating contains modified acrylic resin, which has good physical and mechanical properties, heat resistance, impact resistance, and good weather resistance, so that the overall physical properties of the laser engraving label are better, and it is more heat-resistant, wear-resistant, and durable.

[0043] In some embodiments of the present invention, the release substrate is a carrier for forming the laser engraving film 200. After the laser engraving film 200 is compounded with the comparative coating film 300, the release substrate can be torn off, or the release substrate can be torn off again during use.

[0044] In some embodiments of the present invention, the coating thickness of the engraving coating layer is 3-9 μm, the baking temperature is 110-130° C., and the coating speed is 15-20 m / min, so that a laser engraving film 200 with better physical properties can be obtained.

[0045] In some embodiments of the present invention, the coating thickness of the comparative coating layer is 3-9 μm, the baking temperature is 100-110° C., and the coating speed is 15-20 m / min, so that a comparative coating film 300 with better physical properties can be obtained.

[0046] In some embodiments of the present invention, the laser engraving film 200 and the comparative coating film 300 are heat-pressed and laminated, and the release substrate is torn off after the heat pressing. At this time, the thickness of the label substrate 100, the comparative coating film 300 and the laser engraving film 200 is 60-80 μm, so that the laser engraved label has a certain flexibility.

[0047] In some embodiments of the present invention, the hot pressing speed is 1-10 m / min to achieve a better hot pressing composite effect.

[0048] In some embodiments of the present invention, the adhesive layer 400 is a heat-sensitive adhesive layer, and the heat-sensitive adhesive layer is coated on the upper end surface of the substrate 100 and a release paper 500 is attached to facilitate the storage and use of the laser engraved label.

[0049] In some embodiments of the present invention, the thickness of the heat-sensitive adhesive layer is 10-30 μm to maintain good flexibility of the laser engraved label.

[0050] In some embodiments of the present invention, the first color paste is black paste and the second color paste is white paste, which has a good contrast effect, so that the anti-counterfeiting effect of the laser engraved label is better.

[0051] It is conceivable that, in some embodiments of the present invention, the first color paste and the second color paste may also be other different colors, which will not be described in detail herein.

[0052] In some embodiments of the present invention, the white paste includes TiO 2 That is, the white paste is titanium dioxide color paste, titanium dioxide is a stable inorganic compound, titanium white, has strong adhesion, is not easy to chemically change, and has stable performance, so that the comparative coating film 300 has a better contrast effect and better durability.

[0053] In some embodiments of the present invention, the black paste includes carbon black, that is, the black paste is a carbon black color paste, the black color rendering effect is good, and the main component of carbon black is C (carbon), the performance is stable, and the durability is good.

[0054] In some embodiments of the present invention, the engraving coating comprises modified acrylic resin and polymethyl methacrylate. The engraving coating comprises the following components by mass: 30-90 parts of modified acrylic resin, 5-30 parts of polymethyl methacrylate, 5-10 parts of polyester polyol resin, 5-10 parts of epoxy resin, 10-40 parts of first color paste, 0.01-0.5 parts of leveling agent, and 10-20 parts of organic solvent. The obtained laser engraving film 200 can meet the requirements of laser engraving (etching), and has good physical and chemical properties, and good weather resistance and wear resistance.

[0055] In some embodiments of the present invention, the engraving coating further includes the following components by mass: 0.1-2 parts of UV absorber and 0.1-2 parts of antioxidant, so that the laser engraving film 200 has good stability and strong anti-aging performance, and the laser engraving label has a long service life.

[0056] In some embodiments of the present invention, the engraving coating further includes the following components by mass: 1-10 parts of laser engraving agent, which can improve the laser absorption rate of the laser engraving film 200, facilitate laser engraving of the laser engraving film 200, and the use of the laser engraving agent can improve the quality of the plastic surface after laser engraving, making the marking clearer and more delicate.

[0057] In some embodiments of the present invention, the modified acrylic resin is any one of GA1160, DA112, and DA1100.

[0058] In some embodiments of the present invention, the epoxy resin is any one of SM601, 7160, and TT708.

[0059] In some embodiments of the present invention, the first color paste (black paste) is any one of KJ66300 and SJ6111.

[0060] In some embodiments of the present invention, the laser engraving agent is any one of 702 and XL-LD.

[0061] In some embodiments of the present invention, the leveling agent is any one of LD9310 and BYK316.

[0062] In some embodiments of the present invention, the organic solvent is any one of ethyl acetate, xylene, and butanone.

[0063] In some embodiments of the present invention, the release substrate is a PET release film.

[0064] In some embodiments of the present invention, the preparation process of the engraving coating is as follows: first, an organic solvent, a modified acrylic resin, polymethyl methacrylate, a polyester polyol resin, an epoxy resin and a first color paste are put into a stirring kettle and stirred evenly; then, a leveling agent, an ultraviolet absorber, an antioxidant, a laser engraving agent and a leveling agent are added to the stirring kettle, and the mixture is stirred continuously to obtain an engraving coating that can be laser engraved after being stirred evenly.

[0065] In some embodiments of the present invention, the comparative coating contains polymethyl methacrylate, and the comparative coating includes the following components by mass: 50-80 parts of epoxy resin, 5-20 parts of polymethyl methacrylate, 5-20 parts of polyurethane resin, 1-10 parts of dispersant, 0.01-0.5 parts of leveling agent, and 20-40 parts of second color paste. The obtained comparative coating film 300 has good physical and chemical properties.

[0066] In some embodiments of the present invention, the epoxy resin is any one of SM601, 7160, and TT708.

[0067] In some embodiments of the present invention, the dispersant is any one of LD64190 and LD66204.

[0068] In some embodiments of the present invention, the leveling agent is any one of LD9310 and BYK316.

[0069] In some embodiments of the present invention, the second color paste (white paste) is any one of KJ6350 and JK6211.

[0070] In some embodiments of the present invention, the label substrate is a fragile paper material or a polyester PET material.

[0071] In some embodiments of the present invention, after the laser engraved film is compounded with the comparative coating film, the release substrate is torn off, and a transparent layer is disposed on the outer surface of the laser engraved film, wherein the transparent layer includes polymethacrylate to further improve the wear resistance and durability of the laser engraved label.

[0072] In some embodiments of the present invention, the thickness of the transparent layer is 40-200 μm, so that the laser engraved label has good wear resistance and can maintain a certain flexibility.

[0073] In some embodiments of the present invention, the transparent layer further comprises a pigment that absorbs radiation in the non-visible region to further enhance the visual effect of the laser engraved label.

[0074] Specifically, pigments that absorb radiation in the invisible region mainly include infrared reflective pigments and ultraviolet fluorescent pigments, which have unique functionality and visual effects, whether they reduce the surface temperature of an object by reflecting infrared rays or enhance the visual effect by emitting fluorescence.

[0075] According to the laser engraved label of the second aspect of the present invention, the laser engraved label is made by the laser engraved label making method of any embodiment of the first aspect of the present invention, and has good weather resistance, wear resistance and corrosion resistance.

[0076] like Figure 1 As shown, in some embodiments of the present invention, the laser engraved label comprises, from top to bottom, a release paper 500, an adhesive layer 400, a label substrate 100, a comparison coating film 300, a laser engraved film 200, and a transparent layer 600.

[0077] In order to better understand the above technical solution, the above technical solution will be described in detail below in combination with specific implementation methods.

[0078] Embodiment 1

[0079] The label preparation process includes the following steps:

[0080] Prepare a release substrate, apply an engraving coating to the release substrate, form an engraving coating layer on the end surface of the release substrate, and bake the engraving coating layer to form a laser engraving film 200 attached to the release substrate;

[0081] Prepare a label substrate 100, apply a contrast coating to the label substrate 100, form a contrast coating layer on the lower end surface of the label substrate 100, and bake the contrast coating layer to form a contrast coating film 300 attached to the label substrate 100;

[0082] The laser engraving film 200 is compounded to the bottom of the comparison coating film 300 by hot pressing, and the release substrate is torn off. At this time, the thickness of the semi-finished product is 60μm. A heat-sensitive adhesive layer is coated on the upper end surface of the substrate 100 and a release paper 500 is attached. The thickness of the heat-sensitive adhesive layer is 10μm, and a laser engraving label is obtained.

[0083] The coating thickness of the engraving coating layer is 3 μm, the baking temperature is 110° C., and the coating speed is 15 m / min.

[0084] The coating thickness of the comparative coating layer is 3 μm, the baking temperature is 100°C, and the coating speed is 15 m / min.

[0085] The engraving coating includes the following components by mass: 30 parts of modified acrylic resin, 5 parts of polymethyl methacrylate, 5 parts of polyester polyol resin, 5 parts of epoxy resin, 10 parts of black paste, 0.1 parts of UV absorber, 0.1 parts of antioxidant, 1 part of laser engraving agent, 0.01 parts of leveling agent and 10 parts of organic solvent.

[0086] The comparative coating includes the following components by mass: 50 parts of epoxy resin, 5 parts of polymethyl methacrylate, 5 parts of polyurethane resin, 1 part of dispersant, 0.01 parts of leveling agent, and 20 parts of white paste.

[0087] The laser engraved label obtained by the above process has good flexibility, good weather resistance, wear resistance and corrosion resistance, and high laser engraving clarity.

[0088] Embodiment 2

[0089] The label preparation process includes the following steps:

[0090] Prepare a release substrate, apply an engraving coating to the release substrate, form an engraving coating layer on the end surface of the release substrate, and bake the engraving coating layer to form a laser engraving film 200 attached to the release substrate;

[0091] Prepare a label substrate 100, apply a contrast coating to the label substrate 100, form a contrast coating layer on the lower end surface of the label substrate 100, and bake the contrast coating layer to form a contrast coating film 300 attached to the label substrate 100;

[0092] The laser engraving film 200 is compounded to the bottom of the comparison coating film 300 by hot pressing, and the release substrate is torn off. At this time, the thickness of the semi-finished product is 80μm. A heat-sensitive adhesive layer is coated on the upper end surface of the substrate 100 and a release paper 500 is attached. The thickness of the heat-sensitive adhesive layer is 30μm, and a laser engraving label is obtained.

[0093] The coating thickness of the engraving coating layer is 9 μm, the baking temperature is 130° C., and the coating speed is 20 m / min.

[0094] The coating thickness of the comparative coating layer is 9 μm, the baking temperature is 110°C, and the coating speed is 20 m / min.

[0095] The engraving coating includes the following components by mass: 90 parts of modified acrylic resin, 30 parts of polymethyl methacrylate, 10 parts of polyester polyol resin, 10 parts of epoxy resin, 40 parts of black paste, 2 parts of ultraviolet absorber, 2 parts of antioxidant, 10 parts of laser engraving agent, 0.5 parts of leveling agent and 20 parts of organic solvent.

[0096] The comparative coating includes the following components by mass: 80 parts of epoxy resin, 20 parts of polymethyl methacrylate, 20 parts of polyurethane resin, 10 parts of dispersant, 0.5 parts of leveling agent, and 40 parts of white paste.

[0097] The laser engraved label obtained by the above process has good flexibility, good weather resistance, wear resistance and corrosion resistance, and high laser engraving clarity.

[0098] Embodiment 3

[0099] The label preparation process includes the following steps:

[0100] Prepare a release substrate, apply an engraving coating to the release substrate, form an engraving coating layer on the end surface of the release substrate, and bake the engraving coating layer to form a laser engraving film 200 attached to the release substrate;

[0101] Prepare a label substrate 100, apply a contrast coating to the label substrate 100, form a contrast coating layer on the lower end surface of the label substrate 100, and bake the contrast coating layer to form a contrast coating film 300 attached to the label substrate 100;

[0102] The laser engraving film 200 is compounded to the bottom of the comparison coating film 300 by hot pressing, and the release substrate is torn off. At this time, the thickness of the semi-finished product is 70μm. A heat-sensitive adhesive layer is coated on the upper end surface of the substrate 100 and a release paper 500 is attached. The thickness of the heat-sensitive adhesive layer is 20μm, and a laser engraving label is obtained.

[0103] The coating thickness of the engraving coating layer is 6 μm, the baking temperature is 120° C., and the coating speed is 18 m / min.

[0104] The coating thickness of the comparative coating layer is 6 μm, the baking temperature is 105°C, and the coating speed is 18 m / min.

[0105] The engraving coating includes the following components by mass: 60 parts of modified acrylic resin, 20 parts of polymethyl methacrylate, 8 parts of polyester polyol resin, 7 parts of epoxy resin, 25 parts of black paste, 1 part of ultraviolet absorber, 1 part of antioxidant, 6 parts of laser engraving agent, 0.2 parts of leveling agent and 15 parts of organic solvent.

[0106] The comparative coating includes the following components by mass: 65 parts of epoxy resin, 12 parts of polymethyl methacrylate, 13 parts of polyurethane resin, 6 parts of dispersant, 0.2 parts of leveling agent, and 30 parts of white paste.

[0107] The laser engraved label obtained by the above process has good flexibility, good weather resistance, wear resistance and corrosion resistance, and high laser engraving clarity.

[0108] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A method for making a laser engraved label, characterized in that: include: engraving paint preparation process, comparison paint preparation process and label preparation process; The engraving coating preparation process is used to prepare the engraving coating, and the contrast coating process is used to prepare the contrast coating, the engraving coating comprises polymethacrylate and a first color paste, the contrast coating comprises polymethacrylate and a second color paste, the first color paste and the second color paste have different colors, and at least one of the engraving coating and the contrast coating comprises a modified acrylic resin; The label preparation process includes the following steps: Preparing a release substrate, applying the engraving coating to the release substrate to form an engraving coating layer on an end surface of the release substrate, and baking the engraving coating layer to form a laser engraving film attached to the release substrate; Preparing a label substrate, applying the contrast coating to the label substrate to form a contrast coating layer on the lower end surface of the label substrate, and baking the contrast coating layer to form a contrast coating film attached to the label substrate; The laser engraving film is compounded under the comparative coating film, and a release paper is arranged on the upper end surface of the label substrate through an adhesive layer to prepare a laser engraving label.

2. The laser engraving label making method according to claim 1, characterized in that: The first color paste is a black paste, and the second color paste is a white paste.

3. The laser engraving label making method according to claim 1, characterized in that: The engraving coating comprises modified acrylic resin and polymethyl methacrylate, and comprises the following components by mass: 30-90 parts of modified acrylic resin, 5-30 parts of polymethyl methacrylate, 5-10 parts of polyester polyol resin, 5-10 parts of epoxy resin, 10-40 parts of first color paste, 0.01-0.5 parts of leveling agent, and 10-20 parts of organic solvent.

4. The laser engraving label making method according to claim 1, characterized in that: The comparative coating contains polymethyl methacrylate, and the comparative coating includes the following components by mass: 50-80 parts of epoxy resin, 5-20 parts of polymethyl methacrylate, 5-20 parts of polyurethane resin, 0.01-0.5 parts of leveling agent, and 20-40 parts of second color paste.

5. The laser engraving label making method according to claim 1, characterized in that: After the laser engraving film is compounded with the comparative coating film, the release substrate is torn off, and a transparent layer is disposed on the outer surface of the laser engraving film, wherein the transparent layer comprises polymethacrylate.

6. The method for making a laser engraved label according to claim 5, characterized in that: The transparent layer also contains pigments which absorb radiation in the non-visible region.

7. The laser engraving label making method according to claim 1, characterized in that: The release substrate is a PET release film.

8. The laser engraving label making method according to claim 1, characterized in that: The label substrate is a fragile paper material or a polyester PET material.

9. The laser engraving label making method according to claim 1, characterized in that: The adhesive layer is a pressure-sensitive adhesive layer.

10. A laser engraved label, characterized in that: include: The laser engraved label is made by the laser engraved label making method according to any one of claims 1 to 9.

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