Laser engraving label with white fragile film

Abstract

The utility model discloses a laser engraving label with a white fragile film, which comprises a laser engraving label body, the laser engraving label body comprises the white fragile film, the top and the bottom of the white fragile film are respectively coated with a black ink layer and a pressure-sensitive adhesive, and the white fragile film is connected with the pressure-sensitive adhesive through a chemical bond. The top of the black ink layer is coated with a character layer, the top of the character layer is provided with a gloss oil layer, and the bottom of the pressure-sensitive adhesive is bonded with release paper. The laser engraving label with the white fragile film is high in heat resistance, is not prone to yellowing when heated to a certain temperature or placed for a long time due to the fact that the laser engraving label with the white fragile film is used in cooperation with fluorescent powder, and can be damaged in the stripping process due to the fact that the laser engraving label with the white fragile film is used in cooperation with titanium dioxide, and the anti-fake effect is achieved. And use requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of laser engraving labels, in particular to a laser engraving label with a white fragile film. Background Art

[0002] An important feature of laser engraved labels is their fragility. Currently, laser labels on the market are either too fragile or not fragile. Those that are too fragile will be damaged during use, affecting production efficiency. Non-fragile laser engraved labels can be folded up as a whole when the laser engraved labels are attached to the objects, which does not play an anti-counterfeiting role. In addition, some labels are not resistant to yellowing. When heated to a certain temperature or left for a long time, the labels are still prone to yellowing and cannot meet the use requirements. Based on the above situation, we have proposed a laser engraved label with a white fragile film. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a laser engraved label with a white fragile film.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A laser engraved label with a white fragile film comprises a laser engraved label body, wherein the laser engraved label body comprises a white fragile film, the top and bottom of the white fragile film are respectively coated with a black ink layer and a pressure-sensitive adhesive, the white fragile film and the pressure-sensitive adhesive are connected by a chemical bond, a text layer is coated on the top of the black ink layer, a varnish layer is arranged on the top of the text layer, and a release paper is bonded to the bottom of the pressure-sensitive adhesive.

[0006] Preferably, the black ink layer is a black UV curable resin, which is printed by a flexographic printing process. The hardness of the UV resin after curing is 1H, the taber wear resistance is 200 turns with a 500g weight, and the printing thickness is 1-5 microns.

[0007] Preferably, the black ink layer, text layer and varnish layer are printed by a flexographic printing machine in combination with UV light, and a cross-linking reaction occurs between the black ink layer, text layer and varnish layer to establish a chemical bond connection, and the thickness of the black ink layer, text layer and varnish layer is 1-5 microns.

[0008] Preferably, the white fragile film is formed by mixing acrylic modified resin, titanium dioxide and curing agent, and the white fragile film is coated by a comma blade process, the dried thickness is 50-150 microns, the tensile strength is 50-120N / 25mm, the elongation at break is 2-10%, the dyne value is greater than 30, and the Tg point of the acrylic modified resin is higher than 150°C.

[0009] Preferably, the Tg point of the pressure-sensitive adhesive is greater than -20°C, the dry coating thickness is 15-30 microns, the peeling force is 20-35N / 25mm, and the phosphor content in the pressure-sensitive adhesive is 1-5%.

[0010] Preferably, the thickness of the release paper is 80-150 microns.

[0011] Preferably, the color of the text layer is white or gray, the varnish layer is transparent, the thickness of the text layer and the varnish layer are both 1-5 microns, the text layer and the varnish layer are both UV resin cured, the hardness of the UV resin after curing is 1H, and the taber wear resistance is 200 turns with a 500g weight.

[0012] Compared with the existing technology, the beneficial effects of the utility model are:

[0013] The laser engraved label with a white fragile film prepared by the utility model has strong heat resistance. When the laser engraved label with a white fragile film is heated to a certain temperature or placed for a long time, it is not easy to turn yellow. In addition, when titanium dioxide is used, the whole label will be damaged when peeled off, thereby achieving an anti-counterfeiting effect and meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic structural diagram of a laser engraved label with a white fragile film.

[0015] In the figure: 10, white fragile film; 20, pressure-sensitive adhesive; 30, release paper; 40, black ink layer; 50, text layer; 60, varnish layer. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] Embodiment 1

[0018] Reference Figure 1, a laser engraved label with a white fragile film, comprising a laser engraved label body, the laser engraved label body comprising a white fragile film 10, wherein the white fragile film 10 is made of 50% solid content, 50% acrylic modified resin, 25% titanium dioxide, 5% curing agent, and 25% ethyl acetate and dimethyl carbonate, and the ratio of ethyl acetate to dimethyl carbonate is 1:1, and the white fragile film 10 is coated by a comma scraper process, the dried thickness is 50 microns, the solvent residual rate is less than 1%, the tensile strength is 50-120N / 25mm, the elongation at break is 2-10%, the dyne value is greater than 30, and the Tg point of the acrylic modified resin is higher than 150°C;

[0019] The top and bottom of the white fragile film 10 are coated with a black ink layer 40 and a pressure-sensitive adhesive 20, respectively. The white fragile film 10 and the pressure-sensitive adhesive 20 are connected by chemical bonds, wherein the Tg point of the pressure-sensitive adhesive 20 is greater than -20°C, the coating dry thickness is 30 microns, the peeling force is 20-35N / 25mm, and the phosphor content in the pressure-sensitive adhesive 20 is 5%;

[0020] A text layer 50 is coated on the top of the black ink layer 40, wherein the text layer 50 is white or gray, and the varnish layer 60 is transparent. The text layer 50 and the varnish layer 60 are both 1-5 microns thick, and both are cured by UV resin. The hardness of the UV resin after curing is 1H, and the taber abrasion resistance is 200 turns of 500g weight. The varnish layer 60 is provided on the top of the text layer 50, and a release paper 30 is bonded to the bottom of the pressure-sensitive adhesive 20, wherein the thickness of the release paper 30 is 130 microns, and the release force is 500gf.

[0021] The black ink layer 40 is a black UV curable resin, which is printed by a flexographic printing process. The hardness of the UV resin after curing is 1H, the taber wear resistance is 200 turns of a 500g weight, and the printing thickness is 1-5 microns; and the black ink layer 40, the text layer 50 and the varnish layer 60 are printed by a flexographic printing machine in combination with UV light, and a cross-linking reaction occurs between the black ink layer 40, the text layer 50 and the varnish layer 60 to establish a chemical bond connection, and the thickness of the black ink layer 40, the text layer 50 and the varnish layer 60 is 1-5 microns; the laser engraved label with a white fragile film prepared by the utility model has strong heat resistance, and when the laser engraved label with a white fragile film is heated to a certain temperature or placed for a long time, it is not easy to turn yellow. In addition, when titanium dioxide is used, the entire label will be damaged when peeled off, achieving an anti-counterfeiting effect and meeting the use requirements.

[0022] Working principle: The resin coating liquid of the white fragile film 10 is coated on the release paper 30 with a release force of 500gf and a thickness of 130 microns by a comma blade process, and the resin coating liquid is a mixture of an acrylic modified resin with a solid content of 50%, 25% titanium dioxide and 5% curing agent, and the overall viscosity of the resin coating liquid is 1000-5000cps, the total solid content is 40-60%, and the boiling point difference of each solvent is less than 20°C, and the Tg point of the acrylic modified resin is higher than 150°C;

[0023] After coating, a coating machine is used to coat and reel up to obtain a coil, and the coil is aged to obtain a white fragile film 10 with high tensile strength. Then, a pressure-sensitive adhesive 20 containing 5% fluorescent powder is coated on the bottom of the white fragile film 10 through a comma scraper process. The pressure-sensitive adhesive 20 is a two-component system and has a coating dry thickness of 30 microns. After coating, they are aged together, and then a black ink layer 40, a text layer 50 and a varnish layer 60 are printed in sequence through a flexographic printing process. After printing, they are exposed to UV light to cause a cross-linking reaction to establish a chemical bond connection. The laser engraved label with white fragile film is obtained, and then a certain text pattern is designed, and a flexographic printing machine is used to etch away the varnish layer 60, the text layer 50 and the black ink layer 40 according to the graphic style, and the designed text and text are displayed on the white fragile film 10. The heat resistance of the laser engraved label with white fragile film is higher than 150°C, the tensile strength is greater than 70N, and the dyne value is greater than 30, which is convenient for printing. With the use of fluorescent powder, the laser engraved label with white fragile film is not easy to turn yellow when it is heated to a certain temperature or left for a long time.

[0024] After the production is completed, the laser engraved label of the white fragile film is applied to the object to be attached. When it is peeled off again after more than 20 minutes, since the white fragile film 10 contains titanium dioxide, the whole structure will be damaged when it is peeled off, thereby achieving an anti-counterfeiting effect.

[0025] Embodiment 2

[0026] The manufacturing process of the laser engraved label in the prior art is as follows: a pressure-sensitive adhesive 20 containing fluorescent powder is coated on a 130-micron release paper 30, and the coating dry thickness is 30 microns, wherein the fluorescent powder content in the pressure-sensitive adhesive 20 is less than 5%, and then a 50-micron thick white PET film and the pressure-sensitive adhesive 20 are laminated, and then a black ink layer 40, a text layer 50 and a varnish layer 60 are printed on the white PET film in sequence by a flexographic printing process, and each layer has a thickness of 2 microns, thereby obtaining a laser engraved label.

[0027] The test results are as follows:

[0028]

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser engraved label with a white fragile film, comprising a laser engraved label body, wherein the laser engraved label body comprises a white fragile film (10), characterized in that: The top and bottom of the white fragile film (10) are coated with a black ink layer (40) and a pressure-sensitive adhesive (20) respectively; the white fragile film (10) and the pressure-sensitive adhesive (20) are connected via a chemical bond; a text layer (50) is coated on the top of the black ink layer (40); a varnish layer (60) is provided on the top of the text layer (50); and a release paper (30) is bonded to the bottom of the pressure-sensitive adhesive (20).

2. A laser engraved label with a white fragile film according to claim 1, characterized in that: The black ink layer (40) is a black UV curable resin, which is printed by a flexographic printing process. The hardness of the UV resin after curing is 1H, the taber wear resistance is 200 turns of a 500g weight, and the printing thickness is 1-5 microns.

3. A laser engraved label with a white fragile film according to claim 1, characterized in that: The black ink layer (40), the text layer (50) and the varnish layer (60) are printed by a flexographic printing machine in combination with UV light, and a cross-linking reaction occurs between the black ink layer (40), the text layer (50) and the varnish layer (60) to establish a chemical bond connection, and the thickness of the black ink layer (40), the text layer (50) and the varnish layer (60) is 1-5 microns.

4. A laser engraved label with a white fragile film according to claim 1, characterized in that: The white fragile film (10) is made of a mixture of acrylic modified resin, titanium dioxide and a curing agent, and is coated by a comma blade process. The dried thickness is 50-150 microns, the tensile strength is 50-120N / 25mm, the elongation at break is 2-10%, and the dyne value is greater than 30.

5. A laser engraved label with a white fragile film according to claim 1, characterized in that: The Tg point of the pressure-sensitive adhesive (20) is greater than -20°C, the dry coating thickness is 15-30 microns, the peeling force is 20-35N / 25mm, and the phosphor content in the pressure-sensitive adhesive (20) is 1-5%.

6. A laser engraved label with a white fragile film according to claim 1, characterized in that: The thickness of the release paper (30) is 80-150 microns.

7. A laser engraved label with a white fragile film according to claim 1, characterized in that: The color of the text layer (50) is white or gray, the varnish layer (60) is transparent, the thickness of the text layer (50) and the varnish layer (60) are both 1-5 microns, the text layer (50) and the varnish layer (60) are both UV resin cured, the hardness of the UV resin after curing is 1H, and the taber wear resistance is 200 turns with a 500g weight.

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