Fragile black and white composite film for laser printing anti-counterfeit label

Abstract

The utility model discloses a fragile black and white composite film for a laser printing anti-counterfeit label. The composite film sequentially comprises a protective film, a high-glossiness black coating, a white brittle coating and a white flexible coating from top to bottom, and the total film thickness of the composite film is 160-180 microns. The composite film disclosed by the utility model can be used as an anti-counterfeit label after the white flexible layer is coated with the pressure-sensitive adhesive; after the label is used for attachment, if the label is uncovered again, the middle brittle coating is extremely easy to crack and self-destroy, cannot be completely removed and is also difficult to recover, so that the anti-counterfeiting effect is achieved when the label is broken; the high-glossiness black coating on the upper surface is easy for laser printing of various characters and patterns, and is reasonable in structural design, good in crushing anti-counterfeiting effect, adaptive to a plurality of pressure-sensitive adhesives and easy to apply.

Description

Technical Field

[0001] The utility model relates to a composite film for laser printing anti-counterfeiting labels, in particular to a fragile black-and-white composite film for laser printing anti-counterfeiting labels. Background Art

[0002] Anti-counterfeiting labels are important evidence for identifying the authenticity of products. In order to prevent the circulation of counterfeit and shoddy products, products generally use anti-counterfeiting labels as a defensive measure for products. The application of anti-counterfeiting technology can help consumers to distinguish the authenticity of products to a certain extent, and then facilitate the protection of their own legitimate rights and interests.

[0003] At present, the existing anti-counterfeiting labels using fragile paper and fragile film have many shortcomings, such as not easy to break, complex structure, difficult to produce and apply, and poor adaptability to laser printing. Therefore, the composite film used for laser printing anti-counterfeiting labels has always been the focus of research in this field and is continuously being improved. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fragile black and white composite film for laser printing anti-counterfeiting labels, which has a simple structure, good anti-counterfeiting effect when broken, is compatible with many pressure-sensitive adhesives, and is suitable for laser printing anti-counterfeiting labels.

[0005] The technical solution adopted by the utility model to solve the above technical problems is to provide a fragile black and white composite film for laser printing anti-counterfeiting labels, wherein the composite film comprises a protective film, a high-gloss black coating, a white brittle coating and a white flexible coating from top to bottom.

[0006] Furthermore, the total film thickness of the composite film is 160-180 microns.

[0007] Furthermore, the protective film is an optical PET protective film with a thickness of 45-55 microns.

[0008] Furthermore, the dyne value of the optical PET protective film is 20-24.

[0009] Furthermore, the glossy black coating is a thermosetting polyurethane coating with a thickness of 15-25 microns.

[0010] Furthermore, the glossiness of the high-gloss black coating is greater than 95GS at an angle of 60 degrees and greater than 85GS at an angle of 20 degrees.

[0011] Furthermore, the white brittle coating is a thermosetting polyurethane coating with a thickness of 45-55 microns.

[0012] Furthermore, the elasticity of the white brittle coating is greater than 15 mm.

[0013] Furthermore, the white flexible coating is a thermosetting polyurethane coating with a thickness of 40-50 microns.

[0014] Furthermore, the elasticity of the white flexible coating is less than 1 mm.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the fragile black and white composite film for laser printing anti-counterfeiting labels provided by the utility model is fragile and self-destructive, easy to produce with pressure-sensitive adhesive, and easy to use; it also has high gloss and is easy to use for laser printing text. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the structure of a fragile black and white composite film used for laser printing anti-counterfeiting labels. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 The utility model is a schematic diagram of the structure of a fragile black and white composite film used for laser printing anti-counterfeiting labels.

[0019] See also Figure 1 The fragile black and white composite film for laser printing anti-counterfeiting labels provided by the utility model comprises, from top to bottom, an optical PET protective film 1, a high-gloss black coating 2, a white brittle coating 3 and a white flexible coating 4 which are stacked in sequence.

[0020] The utility model provides a fragile black and white composite film for laser printing anti-counterfeiting labels, wherein the total thickness of the composite film is preferably 160-180 microns. The protective film 1 is an optical PET protective film, and its preferred thickness is 35-55 microns; the dyne value of the optical PET protective film is 20-24. At present, the thickness of the fragile film is 50 microns, and glue is required to bond its base film to form a fragile anti-counterfeiting label, but it is not easy to break or self-destruct when removed, or the label is easy to break and destroy and difficult to operate when it is pasted. Therefore, the fragile black and white composite film for laser printing anti-counterfeiting labels provided by the utility model, except for the 50 microns of the optical PET protective film, the thickness of the black and white composite film is 110-130 microns, which is easy to produce labels and use, and has good anti-counterfeiting performance when removed. The dyne value of the optical PET protective film exceeds 24, and after the high-gloss black coating 2 is cured, the optical PET protective film cannot be torn off. If it is less than 20, the high-gloss black coating cannot form a film on the optical PET protective film.

[0021] The utility model provides a fragile black and white composite film for laser printing anti-counterfeiting labels, wherein the high-gloss black coating 2 is a thermosetting polyurethane coating, and its preferred thickness is 15-25 microns; if the high-gloss black coating 2 is lower than 15 microns, the gloss is low and the covering is insufficient; if it is higher than 25 microns, the laser printing penetration and the thickness of the subsequent coating will be reduced; the glossiness of the high-gloss black coating 2 at a 60-degree angle is greater than 95GS, and the glossiness at a 20-degree angle is greater than 85GS.

[0022] The utility model provides a fragile black-and-white composite film for laser printing anti-counterfeiting labels, wherein the white brittle coating 3 is a thermosetting polyurethane coating, and its thickness is preferably 45-55 microns. If the thickness of the white brittle coating 3 is less than 45 microns, the black-and-white composite film will be insufficiently fragile and self-destructive, and if it is greater than 55 microns, it will affect the thickness of other coatings; the elasticity of the white brittle coating is greater than 15 mm according to the test of GB / T 1731-2020, otherwise the black-and-white composite film will be insufficiently fragile and self-destructive.

[0023] The utility model provides a fragile black-and-white composite film for laser printing anti-counterfeiting labels, wherein the white flexible coating 4 is a thermosetting polyurethane coating, and its thickness is preferably 40-50 microns. If the thickness of the white flexible coating 4 is less than 40 microns, the pasted anti-counterfeiting label will be fragile, easy to destroy and difficult to operate. If the thickness is higher than 50 microns, the anti-counterfeiting label will not be fragile or self-destructive when it is removed. The elasticity of the white flexible coating 4 is less than 1 according to the test of GB / T1731-2020, otherwise the pasted anti-counterfeiting label will be fragile, easy to destroy and difficult to operate.

[0024] In summary, the utility model provides a fragile black and white composite film for laser printing anti-counterfeiting labels, which can be used as an anti-counterfeiting label after the white flexible layer is coated with pressure-sensitive adhesive. After the label is pasted, if it is opened again, the middle brittle coating is very easy to break and self-destruct, and it cannot be completely removed or restored, which plays a role in anti-counterfeiting. The high-gloss black coating on the upper surface is easy to laser print various text patterns, the structural design is reasonable, the anti-counterfeiting effect is good, it is compatible with many pressure-sensitive adhesives, and it is easy to use.

[0025] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A fragile black and white composite film for laser printing anti-counterfeiting labels, characterized in that: The composite film comprises, from top to bottom, a protective film (1), a high-gloss black coating (2), a white brittle coating (3) and a white flexible coating (4); The protective film (1) is an optical PET protective film with a thickness of 45-55 μm; The dyne value of the optical PET protective film is 20-24; The glossy black coating (2) is a thermosetting polyurethane coating with a thickness of 15-25 microns; The glossiness of the high gloss black coating (2) is greater than 95GS at an angle of 60 degrees and greater than 85GS at an angle of 20 degrees; The white brittle coating (3) is a thermosetting polyurethane coating with a thickness of 45-55 microns; The elasticity of the white brittle coating (3) is greater than 15 mm; The white flexible coating (4) is a thermosetting polyurethane coating with a thickness of 40-50 microns; The elasticity of the white flexible coating (4) is less than 1 mm.

2. The fragile black and white composite film for laser printing anti-counterfeiting labels according to claim 1, characterized in that: The total film thickness of the composite film is 160-180 microns.

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