A pull line with completely overlapping information on both sides

Abstract

The present invention discloses a double-sided pull cord with completely overlapping information, belonging to the field of packaging technology. The double-sided pull cord comprises an original film layer, characterized in that the lower surface of the original film layer is provided with, from the inside out, a first aluminum layer, a water-based ink layer, a first laser information layer, a second aluminum layer, an ink protective layer, and a self-adhesive layer, and the upper surface of the original film layer is provided with an anti-sticking layer. The present invention prints water-based polyurethane ink on the first and second aluminum layers, respectively, and combines molding, vacuum aluminum plating, precise aluminum removal, and coating and gluing methods to completely remove the portions of the first laser information layer other than the required information through precise aluminum removal, retaining only the required information, thereby achieving complete overlap of the information on the front and back sides.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, and in particular to a drawstring with completely overlapped information on both sides. Background Art

[0002] At present, products with double-sided information on the market are generally achieved by composite technology, UV laser transfer, hot stamping or overlay printing. Such overlay printing can hardly guarantee that the information on the front and back sides completely overlap due to factors such as deformation or shrinkage of the substrate, machine accuracy, etc. Products with completely overlapping effects of different information on both sides are rare, and pull lines with completely overlapping information on both sides are nowhere to be found.

[0003] Laminating processes to produce double-sided printed cables require a double-layer substrate, resulting in a thicker product. Hot stamping processes can easily deform cables with double-sided printed cables. UV transfer is expensive. Overprinting requires very high equipment precision and substrate requirements. Even with these conditions, the scrap rate is still very high. These laminating processes, UV laser transfer, hot stamping, or overprinting processes cannot guarantee perfect overlap of printed information on both sides of the cable. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a pull string with completely overlapped information on both sides, wherein the information on the front and back sides of the pull string completely overlap.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A double-sided pull line with completely overlapping information comprises an original film layer, wherein the lower surface of the original film layer is provided with a first aluminum plating layer, a water-based ink layer, a first laser information layer, a second aluminum plating layer, an ink protection layer, and a self-adhesive layer in sequence from the inside to the outside, and the upper surface of the original film layer is provided with an anti-sticking layer.

[0007] The present invention provides the original film layer, the first aluminum plating layer, the water-based ink layer, the first laser information layer, the second aluminum plating layer, the ink protection layer, the self-adhesive layer and the anti-sticking layer, so that the pull line has a good anti-counterfeiting effect, a certain aesthetics, and is easy for consumers to use.

[0008] As a preferred embodiment of the present invention, a second laser information layer is provided between the original film layer and the first aluminum plating layer.

[0009] As a preferred embodiment of the present invention, the laser patterns of the first laser information layer and the second laser information layer are consistent; or

[0010] The laser patterns of the first laser information layer and the second laser information layer are inconsistent.

[0011] It should be noted that, in the present invention, the pattern setting position of the laser information layer is not limited. It can have a laser pattern on one side or on both sides, as long as the laser patterns of the first laser information layer and the second laser information layer are consistent and / or inconsistent.

[0012] When the pattern information of the first laser information layer is consistent with the pattern information of the second laser information layer, the information on the front and back sides of the pull line completely overlap.

[0013] When the pattern information of the first laser information layer is inconsistent with that of the second laser information layer, the portions other than the required information of the first laser information layer and the second laser information layer are completely removed by using a dealuminization liquid, and only the required information is retained, so that the information on the front and back sides completely overlap.

[0014] As a preferred embodiment of the present invention, the original film layer is a PET film or a BOPP film, and the thickness of the original film layer is 20 to 40 μm.

[0015] As a preferred embodiment of the present invention, the thickness of the first aluminum plating layer and the second aluminum plating layer is 200 to 600 angstroms.

[0016] As a preferred embodiment of the present invention, the aqueous ink layer is an aqueous polyurethane ink layer.

[0017] As a preferred embodiment of the present invention, the ink protection layer is a water-based polyurethane ink layer.

[0018] As a preferred embodiment of the present invention, the self-adhesive layer is a water-based pressure-sensitive adhesive layer.

[0019] As a preferred embodiment of the present invention, the anti-sticking layer is a silicone oil anti-sticking layer.

[0020] The present invention also provides a method for preparing a pull line with completely overlapped information on both sides, comprising the following steps:

[0021] (1) Choose PET film or BOPP film as the original film layer;

[0022] (2) vacuum evaporation is performed on the lower surface of the original film layer to form a first aluminum coating layer;

[0023] (3) using a gravure printing process to print a water-based polyurethane ink on the lower surface of the first aluminum-plated layer to form a water-based ink layer;

[0024] (4) Imprinting laser information on the lower surface of the aqueous ink layer to form a first laser information layer;

[0025] (5) coating aluminum wire on the lower surface of the first laser information layer by vacuum evaporation to form a second aluminum coating layer;

[0026] (6) using a gravure printing process to print water-based polyurethane ink on the lower surface of the second aluminum-plated layer to form an ink protective layer;

[0027] (7) placing the product obtained in step (6) into a dealuminization solution, performing dealuminization at 15-80° C., and drying;

[0028] (8) applying a water-based pressure-sensitive adhesive to the lower surface of the ink protective layer to form a self-adhesive layer;

[0029] (9) Apply silicone oil on the upper surface of the original film layer to form an anti-sticking layer.

[0030] The present invention also provides a method for preparing a pull line with completely overlapped information on both sides, comprising the following steps:

[0031] (1) Choose PET film or BOPP film as the original film layer;

[0032] (2) Imprinting laser information on the lower surface of the original film layer to form a second laser information layer;

[0033] (3) depositing aluminum wire on the lower surface of the second laser information layer by vacuum evaporation to form a first aluminum coating layer;

[0034] (4) using a gravure printing process to print a water-based polyurethane ink on the lower surface of the first aluminum-plated layer to form a water-based ink layer;

[0035] (5) Imprinting laser information on the lower surface of the aqueous ink layer to form a first laser information layer;

[0036] (6) coating aluminum wire on the lower surface of the first laser information layer by vacuum evaporation to form a second aluminum coating layer;

[0037] (7) using a gravure printing process to print water-based polyurethane ink on the lower surface of the second aluminum-plated layer to form an ink protective layer;

[0038] (8) placing the product obtained in step (7) into a dealuminization solution, performing dealuminization at 15-80° C., and drying;

[0039] (9) applying a water-based pressure-sensitive adhesive to the lower surface of the ink protective layer to form a self-adhesive layer;

[0040] (10) Apply silicone oil on the upper surface of the original film layer to form an anti-sticking layer.

[0041] The beneficial effect of the present invention is that: by printing water-based polyurethane ink on the first aluminum-plated layer and the second aluminum-plated layer respectively, and combining molding, vacuum aluminum plating, precise aluminum removal and coating and gluing methods, the parts other than the required information of the first laser information layer and the second laser layer are completely removed by precise aluminum removal, and only the required information is retained, so that the information on the front and back sides completely overlap. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 This is a schematic structural diagram of the pull wire with double-sided information completely overlapping as described in Example 1;

[0044] Figure 2 This is a schematic structural diagram of the pull wire with double-sided information completely overlapped as described in Examples 2 to 4;

[0045] Markings in the figure: 1, original film layer; 2, first aluminum plating layer; 3, water-based ink layer; 4, first laser information layer; 5, second aluminum plating layer; 6, ink protection layer; 7, self-adhesive layer; 8, anti-sticking layer; 9, second laser information layer. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] If there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] The reagents and instruments used in the present invention without indicating the manufacturer are all conventional products that can be purchased from the market.

[0049] Example 1

[0050] See also Figure 1 This embodiment provides a pull wire with completely overlapping information on both sides, including an original film layer 1, the lower surface of which is provided with a first aluminum plating layer 2, a water-based ink layer 3, a first laser information layer 4, a second aluminum plating layer 5, an ink protection layer 6, and a self-adhesive layer 7 from the inside to the outside, and an anti-sticking layer 8 on the upper surface of the original film layer 1.

[0051] The method for preparing the double-sided information completely overlapping wire comprises the following steps:

[0052] (1) Select 35 μm BOPP film as the original film layer 1;

[0053] (2) Aluminum wire is deposited on the lower surface of the original film layer 1 by vacuum evaporation to form a first aluminum coating layer 2, wherein the vacuum degree of vacuum evaporation is 10 -2 Pa, the thickness of the first aluminum coating layer 2 is 300 angstroms;

[0054] (3) Using gravure printing technology, water-based polyurethane ink is printed on the lower surface of the first aluminum-plated layer 2 and dried at 80°C to form a water-based ink layer 3, wherein the amount of water-based polyurethane ink applied is 1.1 g / m 2 ;

[0055] (4) Using a molding process to emboss the laser information onto the lower surface of the aqueous ink layer 3 to form a first laser information layer 4, wherein the molding temperature is 135° C. and the pressure is 0.4 MPa;

[0056] (5) Aluminum wire is deposited on the lower surface of the first laser information layer 4 by vacuum evaporation to form a second aluminum coating layer 5, wherein the vacuum degree of vacuum evaporation is 10 -2 Pa, the thickness of the second aluminum coating is 300 angstroms;

[0057] (6) using a gravure printing process to print a water-based polyurethane ink on the lower surface of the second aluminum-plated layer 5, and drying it at 85° C. to form an ink protective layer, wherein the thickness of the ink protective layer is 0.5 μm;

[0058] (7) After curing the product obtained in step (6) for 12 hours, the product was placed in a dealuminization solution, immersed in a dealuminization solution at 60°C, and dried at 65°C, wherein the dealuminization solution was a sodium hydroxide solution;

[0059] (8) applying a water-based pressure-sensitive adhesive to the lower surface of the ink protection layer 6 and drying at 80° C. to form a self-adhesive layer 7, wherein the thickness of the self-adhesive layer 7 is 5 μm;

[0060] (9) Silicone oil is applied to the upper surface of the original film layer 1 and dried at 75°C to form an anti-sticking layer 8. The coating amount of silicone oil is 0.15 g / m 2 .

[0061] In this embodiment, water-based polyurethane ink is printed on the first aluminum coating layer and the second aluminum coating layer respectively, and combined with molding, vacuum aluminum coating, precise aluminum removal and coating and gluing methods, the part other than the required information of the first laser information layer is completely removed by precise aluminum removal, retaining only the required information, so that the information on the front and back sides completely overlap.

[0062] Example 2

[0063] See also Figure 2 This embodiment provides a pull wire with completely overlapping information on both sides, including an original film layer 1. The lower surface of the original film layer 1 is provided with a second laser information layer 9, a first aluminum-plated layer 2, a water-based ink layer 3, a first laser information layer 4, a second aluminum-plated layer 5, an ink protection layer 6, and a self-adhesive layer 7 from the inside to the outside, and the upper surface of the original film layer 1 is provided with an anti-sticking layer 8.

[0064] The laser information of the first laser information layer 4 and the second laser information layer 8 are consistent.

[0065] The method for preparing the double-sided information completely overlapping wire comprises the following steps:

[0066] (1) Select 33 μm BOPP film as the original film layer 1;

[0067] (2) Using a molding process to emboss the laser information on the lower surface of the original film layer 1 to form a first laser information layer 9, wherein the molding temperature is 120° C. and the pressure is 0.3 MPa;

[0068] (2) Aluminum wire is plated on the lower surface of the first laser information 9 by vacuum evaporation to form a first aluminum coating layer 2, wherein the vacuum degree of the vacuum evaporation is 10 -2 Pa, the thickness of the first aluminum coating layer 2 is 380 angstroms;

[0069] (3) Using gravure printing technology, water-based polyurethane ink is printed on the lower surface of the first aluminum-plated layer 2 and dried at 85°C to form a water-based ink layer 3, wherein the amount of water-based polyurethane ink applied is 1.5 g / m 2 ;

[0070] (4) Using a molding process to emboss the laser information on the lower surface of the water-based ink layer 3 to form a first laser information layer 4, wherein the molding temperature is 130° C. and the pressure is 0.3 MPa;

[0071] (5) Aluminum wire is deposited on the lower surface of the first laser information layer 4 by vacuum evaporation to form a second aluminum coating layer 5, wherein the vacuum degree of vacuum evaporation is 10 -2 Pa, the thickness of the second aluminum plating layer 5 is 380 angstroms;

[0072] (6) using a gravure printing process to print a water-based polyurethane ink on the lower surface of the second aluminum-plated layer 5, and drying it at 85°C to form an ink protective layer 6, wherein the thickness of the ink protective layer 6 is 0.5 μm;

[0073] (7) applying a water-based pressure-sensitive adhesive to the lower surface of the ink protection layer 6 and drying at 80° C. to form a self-adhesive layer 7, wherein the thickness of the self-adhesive layer 7 is 5 μm;

[0074] (8) Silicone oil is applied to the upper surface of the original film layer 1 and dried at 75°C to form an anti-sticking layer 8. The coating amount of silicone oil is 0.15 g / m 2 .

[0075] In this embodiment, water-based polyurethane ink is printed on the first aluminum coating layer and the second aluminum coating layer respectively, combined with molding, vacuum aluminum coating, and coating and gluing methods. In this embodiment, since the laser information of the first laser information layer 4 and the second laser information layer 8 are consistent, the de-aluminization step is not required, and the double-sided information can be completely overlapped.

[0076] Example 3

[0077] See also Figure 2 This embodiment provides a pull wire with completely overlapping information on both sides, including an original film layer 1. The lower surface of the original film layer is provided with a second laser information layer, a first aluminum-plated layer 2, a water-based ink layer 3, a first laser information layer 4, a second aluminum-plated layer 5, an ink protection layer 6, and a self-adhesive layer 7 from the inside to the outside, and the upper surface of the original film layer 1 is provided with an anti-sticking layer 8.

[0078] The laser information of the first laser information layer 4 and the second laser information layer 8 are consistent.

[0079] The method for preparing the double-sided information completely overlapping wire comprises the following steps:

[0080] (1) Select 33 μm BOPP film as the original film layer 1;

[0081] (2) using a molding process to emboss the laser information onto the lower surface of the original film layer 1 to form a first laser information layer, wherein the molding temperature is 120° C. and the pressure is 0.3 MPa;

[0082] (3) Aluminum wire is plated on the lower surface of the first laser information 9 by vacuum evaporation to form a first aluminum coating layer 2, wherein the vacuum degree of vacuum evaporation is 10 -2 Pa, the thickness of the first aluminum coating layer 2 is 380 angstroms;

[0083] (4) Using gravure printing technology, water-based polyurethane ink is printed on the lower surface of the first aluminum-plated layer 2, and dried at 85°C to form a water-based ink layer 3, wherein the amount of water-based polyurethane ink applied is 1.5g / m2 ;

[0084] (5) Using a molding process to emboss the laser information onto the lower surface of the aqueous ink layer 3 to form a first laser information layer 4, wherein the molding temperature is 130° C. and the pressure is 0.3 MPa;

[0085] (6) Aluminum wire is deposited on the lower surface of the first laser information layer 4 by vacuum evaporation to form a second aluminum coating layer 5, wherein the vacuum degree of vacuum evaporation is 10 -2 Pa, the thickness of the second aluminum plating layer 5 is 380 angstroms;

[0086] (7) using a gravure printing process to print a water-based polyurethane ink on the lower surface of the second aluminum-plated layer 5, and drying it at 85°C to form an ink protective layer 6, wherein the thickness of the ink protective layer 6 is 0.5 μm;

[0087] (8) After solidifying the product obtained in step (7) for 12 seconds, the product is placed in a dealuminization solution, immersed in a dealuminization solution at 60° C., and dried at 65° C., wherein the dealuminization solution is a sodium hydroxide solution;

[0088] (9) applying a water-based pressure-sensitive adhesive to the lower surface of the ink protection layer 6 and drying at 80° C. to form a self-adhesive layer 7, wherein the thickness of the self-adhesive layer 7 is 5 μm;

[0089] (10) Silicone oil is applied to the upper surface of the original film layer 1 and dried at 75°C to form an anti-sticking layer 8. The coating amount of silicone oil is 0.15 g / m 2 .

[0090] In this embodiment, water-based polyurethane ink is printed on the first aluminum coating layer and the second aluminum coating layer respectively, and combined with molding, vacuum aluminum coating, precise aluminum removal and coating and gluing methods, the parts other than the required information of the first laser information layer and the second laser information layer are completely removed by precise aluminum removal, retaining only the required information, so that the information on the front and back sides completely overlap.

[0091] Example 4

[0092] See also Figure 2 This embodiment provides a pull wire with completely overlapping information on both sides, including an original film layer 1. The lower surface of the original film layer is provided with a second laser information layer, a first aluminum-plated layer 2, a water-based ink layer 3, a first laser information layer 4, a second aluminum-plated layer 5, an ink protection layer 6, and a self-adhesive layer 7 from the inside to the outside, and the upper surface of the original film layer 1 is provided with an anti-sticking layer 8.

[0093] The laser information of the first laser information layer 4 and the second laser information layer 8 are inconsistent.

[0094] The method for preparing the double-sided information completely overlapping wire comprises the following steps:

[0095] (1) Select 33 μm BOPP film as the original film layer 1;

[0096] (2) using a molding process to emboss the laser information onto the lower surface of the original film layer 1 to form a first laser information layer, wherein the molding temperature is 120° C. and the pressure is 0.3 MPa;

[0097] (3) Aluminum wire is plated on the lower surface of the first laser information 9 by vacuum evaporation to form a first aluminum coating layer 2, wherein the vacuum degree of vacuum evaporation is 10 -2 Pa, the thickness of the first aluminum coating layer 2 is 380 angstroms;

[0098] (4) Using gravure printing technology, water-based polyurethane ink is printed on the lower surface of the first aluminum-plated layer 2, and dried at 85°C to form a water-based ink layer 3, wherein the amount of water-based polyurethane ink applied is 1.5g / m 2 ;

[0099] (5) Using a molding process to emboss the laser information onto the lower surface of the aqueous ink layer 3 to form a first laser information layer 4, wherein the molding temperature is 130° C. and the pressure is 0.3 MPa;

[0100] (6) Aluminum wire is deposited on the lower surface 4 of the first laser information layer by vacuum evaporation to form a second aluminum coating layer 5, wherein the vacuum degree of the vacuum evaporation is 10 -2 Pa, the thickness of the second aluminum coating is 380 angstroms;

[0101] (7) using a gravure printing process to print a water-based polyurethane ink on the lower surface of the second aluminum-plated layer 5, and drying it at 85°C to form an ink protective layer 6, wherein the thickness of the ink protective layer 6 is 0.5 μm;

[0102] (8) After solidifying the product obtained in step (7) for 12 hours, the product was placed in a dealuminization solution, immersed in a dealuminization solution at 60° C. for 12 hours, and dried at 65° C., wherein the dealuminization solution is a sodium hydroxide solution;

[0103] (9) applying a water-based pressure-sensitive adhesive to the lower surface of the ink protection layer 6 and drying at 80° C. to form a self-adhesive layer 7, wherein the thickness of the self-adhesive layer 7 is 5 μm;

[0104] (10) Silicone oil is applied to the upper surface of the original film layer 1 and dried at 75°C to form an anti-sticking layer 8. The coating amount of silicone oil is 0.15 g / m 2 .

[0105] In this embodiment, water-based polyurethane ink is printed on the first aluminum coating layer and the second aluminum coating layer respectively, and combined with molding, vacuum aluminum coating, precise aluminum removal and coating and gluing methods, the parts other than the required information of the first laser information layer and the second laser information layer are completely removed by precise aluminum removal, retaining only the required information, so that the information on the front and back sides completely overlap.

[0106] In this comparative example, since the laser information on the first laser information layer 4 is inconsistent with that on the second laser information layer 8 , a de-aluminization step is required to completely overlap the information on both sides.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A double-sided information completely overlapped wire, comprising an original film layer, characterized in that: The lower surface of the original film layer is provided with a first aluminum coating layer, a water-based ink layer, a first laser information layer, a second aluminum coating layer, an ink protection layer, and a self-adhesive layer in sequence from the inside to the outside, and the upper surface of the original film layer is provided with an anti-sticking layer; A second laser information layer is provided between the original film layer and the first aluminum-plated layer; The method for preparing the double-sided information completely overlapping wire comprises the following steps: (1) Select PET film or BOPP film as the original film layer; (2) Imprinting laser information on the lower surface of the original film layer to form a second laser information layer; (3) depositing aluminum wire on the lower surface of the second laser information layer by vacuum evaporation to form a first aluminum coating layer; (4) using a gravure printing process to print a water-based polyurethane ink on the lower surface of the first aluminum-plated layer to form a water-based ink layer; (5) Imprinting laser information on the lower surface of the aqueous ink layer to form a first laser information layer; (6) coating aluminum wire on the lower surface of the first laser information layer by vacuum evaporation to form a second aluminum coating layer; (7) using a gravure printing process to print water-based polyurethane ink on the lower surface of the second aluminum-plated layer to form an ink protective layer; (8) placing the product obtained in step (7) into a dealuminization solution, performing dealuminization at 15-80° C., and drying; (9) applying a water-based pressure-sensitive adhesive to the lower surface of the ink protective layer to form a self-adhesive layer; (10) Apply silicone oil on the upper surface of the original film layer to form an anti-sticking layer.

2. The pull string with double-sided information completely overlapped according to claim 1, characterized in that: The laser patterns of the first laser information layer and the second laser information layer are consistent; or The laser patterns of the first laser information layer and the second laser information layer are inconsistent.

3. The pull string with double-sided information completely overlapped according to claim 1, characterized in that: The original film layer is a PET film or a BOPP film, and the thickness of the original film layer is 20 to 40 μm.

4. The double-sided information completely overlapped pull cord according to claim 1, characterized in that: The thickness of the first aluminum plating layer and the second aluminum plating layer is 200 to 600 angstroms.

5. The double-sided information completely overlapped pull cord according to claim 1, characterized in that: The water-based ink layer is a water-based polyurethane ink layer.

6. The double-sided information completely overlapped pull cord according to claim 1, characterized in that: The ink protection layer is a water-based polyurethane ink layer.

7. The double-sided information completely overlapped pull cord according to claim 1, characterized in that: The self-adhesive layer is a water-based pressure-sensitive adhesive layer.

8. The double-sided information completely overlapped pull cord according to claim 1, characterized in that: The anti-sticking layer is a silicone oil anti-sticking layer.

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