CN110766118A - Plastic film uncovering type special code anti-counterfeit label and preparation method thereof - Google Patents

Plastic film uncovering type special code anti-counterfeit label and preparation method thereof Download PDF

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Publication number
CN110766118A
CN110766118A CN201910903928.3A CN201910903928A CN110766118A CN 110766118 A CN110766118 A CN 110766118A CN 201910903928 A CN201910903928 A CN 201910903928A CN 110766118 A CN110766118 A CN 110766118A
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China
Prior art keywords
layer
counterfeiting
code
printing
special
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Application number
CN201910903928.3A
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Chinese (zh)
Inventor
赵波
张钦永
田晨琪
万杰
田学峰
田兴坡
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Shandong Taibao Preventing Counterfeit Product Co Ltd
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Shandong Taibao Preventing Counterfeit Product Co Ltd
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Priority to CN201910903928.3A priority Critical patent/CN110766118A/en
Publication of CN110766118A publication Critical patent/CN110766118A/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
    • B41M5/0017—Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F2003/0208—Indicia
    • G09F2003/0213—Concealed data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F2003/0257—Multilayer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Printing Methods (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention belongs to the technical field of anti-counterfeiting products, and particularly relates to a plastic film uncovering type special code anti-counterfeiting label and a preparation method thereof. A transparent PET layer, an isolation layer, a printing layer, a white ink layer, an adhesive layer and a silicone oil paper layer are sequentially arranged from top to bottom; the special code anti-counterfeiting label can be uncovered and is divided into a stripping part and a bottom retaining part, wherein the stripping part is a PET layer; the bottom-remaining part is sequentially provided with an isolating layer, a printing layer, a white film layer and an adhesive layer from top to bottom. According to the plastic film uncovering type special code anti-counterfeiting label, the special anti-counterfeiting code adopted in the printing layer is a hidden code which does not reduce the attractiveness of a commodity package, can be quickly and accurately identified, can form vector data, and can be used for batch processing printing of high-speed variable information. When the anti-counterfeiting code is damaged to 75%, namely when the isolation layer is damaged, the anti-counterfeiting code is incomplete, the anti-counterfeiting code can still be identified and read, the error correction rate is high, and the anti-counterfeiting code is not easy to copy.

Description

Plastic film uncovering type special code anti-counterfeit label and preparation method thereof
Technical Field
The invention belongs to the technical field of anti-counterfeiting products, and particularly relates to a plastic film uncovering type special code anti-counterfeiting label and a preparation method thereof.
Background
At present, two-dimensional codes are widely applied to various industries and daily life of people, and are rapidly read by a reader with a camera, compared with the prior bar codes, the two-dimensional codes can store more abundant information, but the two-dimensional codes still face self problems and external challenges.
Because the two-dimensional code is square and is directly printed on the plane base material according to black and white, the appearance of certain products is greatly influenced, and the two-dimensional code visible to naked eyes is easily copied and has low safety. The existing two-dimensional code is printed on a commodity or other carriers in a black-and-white mode and is visible to naked eyes, so that the appearance of the product is influenced, and convenience is provided for counterfeiters and the safety is influenced due to the fact that the two-dimensional code is directly visible.
In recent years, as social network sites use two-dimensional codes for network login, commodity publicity and the like, people have developed a living habit of reading two-dimensional codes, and the two-dimensional codes are widely known, so that the vigorous development in society not only facilitates the lives of people, but also puts new requirements on the development of the two-dimensional codes.
The existing uncovering type anti-counterfeiting label has the problems that the phenomenon of uncovering the two-dimensional code can occur due to a plurality of objective factors in the uncovering type, and the error correction rate of most two-dimensional codes is 15%, so that the two-dimensional code can not be identified and read easily as long as one positioning point of the two-dimensional code is damaged, and some unnecessary losses are brought to consumers.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the plastic film uncovering type special code anti-counterfeiting label is provided. The anti-counterfeiting code adopted by the anti-counterfeiting label is a hidden code which does not reduce the attractiveness of commodity packaging, can realize quick and accurate identification, has high error correction rate, and can be accurately identified and read when the anti-counterfeiting code is damaged; the invention also provides a preparation method thereof.
The plastic film uncovering type special code anti-counterfeit label is characterized in that a transparent PET layer, an isolation layer, a printing layer, a white ink layer, an adhesive layer and a silicone oil paper layer are sequentially arranged from top to bottom; the special code anti-counterfeiting label can be uncovered and is divided into a stripping part and a bottom retaining part, wherein the stripping part is a PET layer; the bottom-remaining part is sequentially provided with an isolating layer, a printing layer, a white ink layer and an adhesive layer from top to bottom.
And after the mark is used, the silicone oil paper layer is taken as recyclable waste to be recycled.
The anti-counterfeiting information printed on the printing layer consists of printing pictures and texts and special anti-counterfeiting codes converted into pictures.
The special anti-counterfeiting code is used for converting common anti-counterfeiting information into any shape consisting of small black dots in a picture form.
The special anti-counterfeiting code consists of black dots with the diameter of 18-25 μm, and the density of the black dots is 10-15/mm2。
The preparation method of the plastic film uncovering type special code anti-counterfeiting label comprises the following steps:
(1) converting common data into special anti-counterfeiting codes in the form of pictures by using a digital converter, wherein the shapes of the pictures can be molded at will;
(2) writing a special anti-counterfeiting code segmentation program, fusing a special anti-counterfeiting code picture and printed image-text contents by using VB or NET language to ensure that the appearance of the anti-counterfeiting label is not influenced by the special anti-counterfeiting code;
(3) sending the debugged template to a printing machine by using pre-printing emission software to wait for printing;
(4) selecting transparent PET as a base film, coating an isolating liquid on the non-corona surface by using a gravure press, and curing to form an isolating layer;
(5) carrying out mirror image printing on the anti-counterfeiting information on the isolating layer by using a printing machine to obtain a printing layer;
(6) printing water-based white ink on the printing layer by using a gravure press to obtain a white ink layer;
(7) coating the silicon-coated surface of the silicone oil paper with an adhesive by using a spreading machine in a blade coating mode, volatilizing a solvent in the adhesive, and compounding the solvent and the white ink layer together;
(8) and cutting the anti-counterfeit label into a single plastic film and uncovering the special code by using an automatic die cutting machine.
Wherein:
the special anti-counterfeiting code in the anti-counterfeiting information is given to any position of the printing layer in a printing mode, can be coincided with other printing patterns, and does not need to reserve a printing position; in order to keep the appearance of the label beautiful, the positions of the pictures and texts and the special codes in the printing layer are positioned before printing.
The thickness of the PET base film is 20-50 μm.
The isolating layer is formed by solidifying an isolating liquid, the isolating liquid is a mixed liquid of chlorinated polypropylene and absolute ethyl alcohol, and the mass ratio of the chlorinated polypropylene to the absolute ethyl alcohol is 1: 10.
The 90-degree peel strength between the isolation layer and the PET base film is 0.020KN/m-0.040 KN/m.
The thickness of the isolation layer is 1.5 μm-2.5 μm, and too thin or too thick can affect the uncovering effect of the isolation layer.
The coating plate roller in the step (4) is 110 meshes-180 meshes, the temperature is 75 ℃ to 95 ℃, and the vehicle speed is 25 meters/second to 35 meters/second.
The purpose of printing the water-based white ink in the step (6) is favorable for environmental protection, the mesh number of plate rollers for printing the white ink is 140 meshes, the drying temperature is 80-90 ℃, and the vehicle speed is 30-40 m/min.
The drying tunnel of the glue spreader in the step (7) is 5 groups, the temperature of each group is 65-75 ℃, 80-90 ℃, 95-105 ℃, 110-120 ℃, 80-90 ℃ and the speed of the glue spreader is 40-50 m/min.
The glue coating amount in the step (7) is 15-18g/m2。
The printer used for printing was a Hewlett packard indigo printer.
According to the preparation method of the plastic film uncovering type special code anti-counterfeiting label, the printing layer is printed in a plateless mode, namely, the printing layer is printed by electronic ink, so that the printing requirements of special anti-counterfeiting codes can be met, the small black dots of special codes are not printed completely, the small black dots are arranged wrongly, the image resolution of a Hewlett packard printer is 2438x2438dpi, and the printing requirements of the special anti-counterfeiting codes can be met.
The plastic film uncovering type special code anti-counterfeiting label is irreversible after being uncovered, and as the spacer fluid is in a liquid state when being coated with the spacer fluid, the resin in the plastic film uncovering type special code anti-counterfeiting label has certain adhesion performance to PET, the resin can be completely pasted on the surface of the PET after being dried, and the viscosity disappears after being dried, so that the plastic film uncovering type special code anti-counterfeiting label cannot be restored after being uncovered, the purpose of non-secondary use is achieved, and the benefit of consumers is protected.
Because the special anti-counterfeiting code is formed by converting the digital code into a plurality of same black dots and randomly arranging the black dots, and finally forming a calculation program to be stored in the database, the residual 25 percent is utilized, and the black dots and the arrangement rule on the residual black dots can still calculate the overall rule, so that the authenticity can be found out.
As a preferred technical scheme, the preparation method of the plastic film uncovering type special code anti-counterfeiting label comprises the following steps:
(1) converting common data into special anti-counterfeiting codes in the form of pictures by using a digital converter, wherein the shapes of the pictures can be molded at will;
(2) writing a special anti-counterfeiting code segmentation program, fusing a special anti-counterfeiting code picture and printed image-text contents by using VB or NET language to ensure that the appearance of the anti-counterfeiting label is not influenced by the special anti-counterfeiting code;
(3) sending the debugged template to an indigo printer by using pre-printing typesetting software for waiting for printing;
(4) selecting transparent PET with the thickness of 20-50 μm as a base film, coating an isolating liquid on a non-corona surface by using a gravure press, and curing to form an isolating layer, wherein the 90-degree peel strength between the isolating layer and the PET base film is 0.020-0.040 kn/m, the coating roller is 110-180 meshes, the temperature is 75-95 ℃, and the vehicle speed is 25-35 m/s;
(5) performing mirror image printing on the isolation layer by using indigo, wherein the printing content comprises pictures and texts and a special two-dimensional code converted into a picture form;
(6) printing water-based white ink (beneficial to environmental protection) on the printing layer by using a gravure press to obtain a white ink layer; the mesh number of printing roller for printing white ink is 140 meshes, the drying temperature is 80-90 ℃, and the vehicle speed is 30-40 m/min;
(7) and coating the silicon-coated surface of the silicone oil paper with an adhesive by using a spreading machine in a blade coating mode, volatilizing a solvent in the adhesive, and compounding the solvent and the white ink layer together. The drying tunnel of the glue spreader is 5 groups, the temperature of each group is 65-75 ℃, 80-90 ℃, 95-105 ℃, 110-120 ℃, 80-90 ℃, the speed of the glue spreader is 40-50 m/min, and the glue spreading amount is 15-18g/m2；
(8) And cutting into single anti-counterfeit labels by using an automatic die cutting machine.
The plastic film uncovering type special code anti-counterfeiting label is suitable for the industries of wine, cosmetics, medicines and the like.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the plastic film uncovering type special code anti-counterfeiting label, the special anti-counterfeiting code adopted in the printing layer is a hidden code which does not reduce the attractiveness of a commodity package, can be quickly and accurately identified, can form vector data, and can be used for batch processing printing of high-speed variable information.
(2) The plastic film uncovering type special code anti-counterfeiting label provided by the invention has the advantages that original data are converted into the form of pictures, then the converted pictures and the images printed by the marks are subjected to typesetting design, the printing quality of the hidden code pictures can be ensured, the requirement of high-speed printing can be met, meanwhile, variable information coding of one mark and one code can be carried out, and the problem of high-speed coding of a large number of commodity marks is solved.
(3) According to the plastic film uncovering type special code anti-counterfeiting label, when the anti-counterfeiting code is damaged to 75%, namely when the isolation layer is damaged and the anti-counterfeiting code is incomplete, the anti-counterfeiting code can still be identified and read, the error correction rate is high, and the anti-counterfeiting code is not easy to copy.
Detailed Description
The present invention is further described below with reference to examples.
Example 1
The plastic film uncovering type special code anti-counterfeit label is characterized in that a transparent PET layer, an isolation layer, a printing layer, a white ink layer, an adhesive layer and a silicone oil paper layer are sequentially arranged from top to bottom; the special code anti-counterfeiting label can be uncovered and is divided into a stripping part and a bottom retaining part, wherein the stripping part is a PET layer; the bottom-remaining part is sequentially provided with an isolating layer, a printing layer, a white ink layer and an adhesive layer from top to bottom.
And after the mark is used, the silicone oil paper layer is taken as recyclable waste to be recycled.
The anti-counterfeiting information printed on the printing layer consists of printing pictures and texts and special anti-counterfeiting codes converted into pictures.
The special anti-counterfeiting code is used for converting common anti-counterfeiting information into any shape consisting of small black dots in a picture form.
The special anti-counterfeiting code is composed of black dots with the diameter of 20 mu m, and the density of the black dots is 15/mm2。
The preparation method of the invention is adopted to produce 80 ten thousand plastic film uncovering type special code anti-counterfeit labels, and the method is as follows.
The preparation method of the plastic film uncovering type special code anti-counterfeiting label comprises the following steps:
(1) the common data is converted into special anti-counterfeiting codes in the form of pictures by a digital converter, and the pictures are cartoon puppies.
(2) Writing a special anti-counterfeiting code segmentation program, fusing the special anti-counterfeiting code picture and the printed image-text content by VB or NET language to ensure that the appearance of the anti-counterfeiting label is not influenced by the special anti-counterfeiting code.
(3) And sending the debugged template to an indigo printer to wait for printing by using prepress emission software.
(4) Selecting transparent PET with the thickness of 20 mu m as a base film, coating an isolation solution on the non-corona surface by using a gravure press, and curing to form an isolation layer; the 90-degree peel strength between the isolation layer and the PET is 0.030KN/m, the coating roller is 150 meshes, the temperature is 80 ℃, and the vehicle speed is 30 m/s.
(5) And mirror image printing is carried out on the isolating layer by using indigo, and the printed matter comprises pictures and texts and a special two-dimensional code converted into a picture form, wherein the diameter of black dots forming the special code is 20 mu m, and the density is 15 per square millimeter.
(6) Printing water-based white ink (beneficial to environmental protection) on the printing layer by using a gravure press to obtain a white ink layer; the mesh number of printing roller for printing white ink is 140 meshes, the drying temperature is 80 ℃, and the vehicle speed is 30 m/min;
(7) and coating the silicon-coated surface of the silicone oil paper by using a spreading machine in a blade coating mode, volatilizing a solvent in the adhesive, and compounding the solvent and the white ink layer together. The drying tunnel of the glue spreader is 5 groups, the temperature of each group is 70 ℃, 90 ℃, 105 ℃, 120 ℃, 90 ℃, the speed of the glue spreader is 40 m/min, and the glue spreading amount is 18g/m2。
(8) And cutting into single anti-counterfeit labels by using an automatic die cutting machine.
Wherein: the isolation liquid is a mixed liquid formed by mixing chlorinated polypropylene and absolute ethyl alcohol according to the mass ratio of 1Kg to 10 Kg.
Example 2
The plastic film uncovering type special code anti-counterfeit label is characterized in that a transparent PET layer, an isolation layer, a printing layer, a white ink layer, an adhesive layer and a silicone oil paper layer are sequentially arranged from top to bottom; the special code anti-counterfeiting label can be uncovered and is divided into a stripping part and a bottom retaining part, wherein the stripping part is a PET layer; the bottom-remaining part is sequentially provided with an isolating layer, a printing layer, a white ink layer and an adhesive layer from top to bottom.
And after the mark is used, the silicone oil paper layer is taken as recyclable waste to be recycled.
The anti-counterfeiting information printed on the printing layer consists of printing pictures and texts and special anti-counterfeiting codes converted into pictures.
The special anti-counterfeiting code is used for converting common anti-counterfeiting information into any shape consisting of small black dots in a picture form.
The special anti-counterfeiting code is composed of black dots with the diameter of 18 mu m, and the density of the black dots is 13/mm2。
The preparation method of the invention is adopted to produce 80 ten thousand plastic film uncovering type special code anti-counterfeit labels, and the method is as follows.
The preparation method of the plastic film uncovering type special code anti-counterfeiting label comprises the following steps:
(1) the common data is converted into special anti-counterfeiting codes in the form of pictures by a digital converter, and the pictures are cartoon puppies.
(2) Writing a special anti-counterfeiting code segmentation program, fusing the special anti-counterfeiting code picture and the printed image-text content by VB or NET language to ensure that the appearance of the anti-counterfeiting label is not influenced by the special anti-counterfeiting code.
(3) And sending the debugged template to an indigo printer to wait for printing by using prepress emission software.
(4) Selecting transparent PET with the thickness of 35 mu m as a base film, coating an isolation solution on the non-corona surface by using a gravure press, and curing to form an isolation layer; the 90-degree peel strength between the isolation layer and the PET is 0.020KN/m, the coating roller is 110 meshes, the temperature is 75 ℃, and the vehicle speed is 25 m/s.
(5) The separation layer is printed with an indigo mirror image, and the printed matter contains pictures and texts and a special two-dimensional code converted into a picture form, wherein the diameter of black dots forming the special code is 18 mu m, and the density is 13 per square millimeter.
(6) Printing water-based white ink (beneficial to environmental protection) on the printing layer by using a gravure press to obtain a white ink layer; the mesh number of printing roller for printing white ink is 140 meshes, the drying temperature is 85 ℃, and the vehicle speed is 35 m/min;
(7) and coating the silicon-coated surface of the silicone oil paper by using a spreading machine in a blade coating mode, volatilizing a solvent in the adhesive, and compounding the solvent and the white ink layer together. The drying tunnel of the glue spreader is 5 groups, the temperature of each group is 65 ℃, 80 ℃, 95 ℃, 110 ℃, 80 ℃, the speed of the glue spreader is 50 m/min, and the glue spreading amount is 15g/m2。
(8) And cutting into single anti-counterfeit labels by using an automatic die cutting machine.
Wherein: the isolation liquid is a mixed liquid formed by mixing chlorinated polypropylene and absolute ethyl alcohol according to the mass ratio of 1Kg to 10 Kg.
Example 3
The plastic film uncovering type special code anti-counterfeit label is characterized in that a transparent PET layer, an isolation layer, a printing layer, a white ink layer, an adhesive layer and a silicone oil paper layer are sequentially arranged from top to bottom; the special code anti-counterfeiting label can be uncovered and is divided into a stripping part and a bottom retaining part, wherein the stripping part is a PET layer; the bottom-remaining part is sequentially provided with an isolating layer, a printing layer, a white ink layer and an adhesive layer from top to bottom.
And after the mark is used, the silicone oil paper layer is taken as recyclable waste to be recycled.
The anti-counterfeiting information printed on the printing layer consists of printing pictures and texts and special anti-counterfeiting codes converted into pictures.
The special anti-counterfeiting code is used for converting common anti-counterfeiting information into any shape consisting of small black dots in a picture form.
The special anti-counterfeiting code is composed of 23 μm black dots with density of 10 dots/mm2。
The preparation method of the invention is adopted to produce 80 ten thousand plastic film uncovering type special code anti-counterfeit labels, and the method is as follows.
The preparation method of the plastic film uncovering type special code anti-counterfeiting label comprises the following steps:
(1) the common data is converted into special anti-counterfeiting codes in the form of pictures by a digital converter, and the pictures are cartoon puppies.
(2) Writing a special anti-counterfeiting code segmentation program, fusing the special anti-counterfeiting code picture and the printed image-text content by VB or NET language to ensure that the appearance of the anti-counterfeiting label is not influenced by the special anti-counterfeiting code.
(3) And sending the debugged template to an indigo printer to wait for printing by using prepress emission software.
(4) Selecting transparent PET with the thickness of 50 mu m as a base film, coating an isolation solution on the non-corona surface by using a gravure press, and curing to form an isolation layer; the 90-degree peel strength between the isolation layer and the PET is 0.040KN/m, the coating roller is 140 meshes, the temperature is 95 ℃, and the vehicle speed is 35 m/s.
(5) And mirror image printing is carried out on the isolating layer by using indigo, and the printed matter comprises pictures and texts and a special two-dimensional code converted into a picture form, wherein the diameter of black dots forming the special code is 23 mu m, and the density is 10 per square millimeter.
(6) Printing water-based white ink (beneficial to environmental protection) on the printing layer by using a gravure press to obtain a white ink layer; the mesh number of printing roller for printing white ink is 140 meshes, the drying temperature is 90 ℃, and the vehicle speed is 30 m/min;
(7) and coating the silicon-coated surface of the silicone oil paper by using a spreading machine in a blade coating mode, volatilizing a solvent in the adhesive, and compounding the solvent and the white ink layer together. The drying tunnel of the glue spreader is 5 groups, the temperature of each group is set to be 75 ℃, 85 ℃, 100 ℃, 105 ℃, 80 ℃, the speed of the glue spreader is 45 m/min, and the glue spreading amount is 16g/m2。
(8) And cutting into single anti-counterfeit labels by using an automatic die cutting machine.
Wherein: the isolation liquid is a mixed liquid formed by mixing chlorinated polypropylene and absolute ethyl alcohol according to the mass ratio of 1Kg to 10 Kg.
The plastic film uncovering type special code anti-counterfeiting label is irreversible after being uncovered, and as the spacer fluid is in a liquid state when being coated with the spacer fluid, the resin in the plastic film uncovering type special code anti-counterfeiting label has certain adhesion performance to PET, the resin can be completely pasted on the surface of the PET after being dried, and the viscosity disappears after being dried, so that the plastic film uncovering type special code anti-counterfeiting label cannot be restored after being uncovered, the purpose of non-secondary use is achieved, and the benefit of consumers is protected.
According to the plastic film uncovering type special code anti-counterfeiting label, when the anti-counterfeiting code is damaged to 75%, namely when the isolation layer is damaged and the anti-counterfeiting code is incomplete, the anti-counterfeiting code can still be identified and read, the error correction rate is high, and the anti-counterfeiting code is not easy to copy.

Claims (10)

1. The utility model provides a plastic film uncovers special sign indicating number antifalsification label which characterized in that: a transparent PET layer, an isolation layer, a printing layer, a white ink layer, an adhesive layer and a silicone oil paper layer are sequentially arranged from top to bottom; the special code anti-counterfeiting label can be uncovered and is divided into a stripping part and a bottom retaining part, wherein the stripping part is a PET layer; the bottom-remaining part is sequentially provided with an isolating layer, a printing layer, a white film layer and an adhesive layer from top to bottom.
2. The plastic film tamper-evident special code anti-counterfeit label according to claim 1, wherein: the anti-counterfeiting information printed on the printing layer consists of printing pictures and texts and special anti-counterfeiting codes converted into pictures.
3. The plastic film tamper-evident special code anti-counterfeit label according to claim 2, wherein: the special anti-counterfeiting code is used for converting common anti-counterfeiting information into any shape consisting of small black dots in a picture form.
4. The plastic film tamper-evident special code anti-counterfeit label according to claim 2, wherein: the special anti-counterfeiting code consists of black dots with the diameter of 18-25 μm, and the density of the black dots is 10-15/mm2。
5. The preparation method of the plastic film uncovering type special code anti-counterfeiting label according to claim 1 is characterized in that: the method comprises the following steps:
(1) converting common data into special anti-counterfeiting codes in the form of pictures by using a digital converter, wherein the shapes of the pictures can be molded at will;
(2) writing a special anti-counterfeiting code segmentation program, fusing a special anti-counterfeiting code picture and printed image-text contents by using VB or NET language to ensure that the appearance of the anti-counterfeiting label is not influenced by the special anti-counterfeiting code;
(3) sending the debugged template to a printing machine by using pre-printing emission software to wait for printing;
(4) selecting transparent PET as a base film, coating an isolating liquid on the non-corona surface by using a gravure press, and curing to form an isolating layer;
(5) carrying out mirror image printing on the anti-counterfeiting information on the isolating layer by using a printing machine to obtain a printing layer;
(6) printing water-based white ink on the printing layer by using a gravure press to obtain a white ink layer;
(7) coating the silicon-coated surface of the silicone oil paper with an adhesive by using a spreading machine in a blade coating mode, volatilizing a solvent in the adhesive, and compounding the solvent and the white ink layer together;
(8) and cutting the anti-counterfeit label into a single plastic film and uncovering the special code by using an automatic die cutting machine.
6. The preparation method of the plastic film uncovering type special code anti-counterfeiting label according to claim 5, characterized in that: the thickness of the PET base film is 20-50 μm.
7. The preparation method of the plastic film uncovering type special code anti-counterfeiting label according to claim 5, characterized in that: the isolating layer is formed by solidifying an isolating liquid, the isolating liquid is a mixed liquid of chlorinated polypropylene and absolute ethyl alcohol, and the mass ratio of the chlorinated polypropylene to the absolute ethyl alcohol is 1: 10.
8. The preparation method of the plastic film uncovering type special code anti-counterfeiting label according to claim 5, characterized in that: the 90-degree peel strength between the isolation layer and the PET base film is 0.020KN/m-0.040 KN/m; the thickness of the isolation layer is 1.5-2.5 μm.
9. The preparation method of the plastic film uncovering type special code anti-counterfeiting label according to claim 5, characterized in that: the coating plate roller in the step (4) is 110 meshes-180 meshes, the temperature is 75 ℃ to 95 ℃, and the vehicle speed is 25 meters/second to 35 meters/second.
10. The preparation method of the plastic film uncovering type special code anti-counterfeiting label according to claim 5, characterized in that: the drying tunnel of the glue spreader in the step (7) is 5 groups, the temperature of each group is 65-75 ℃, 80-90 ℃, 95-105 ℃, 110-120 ℃, 80-90 ℃ and the speed of the glue spreader is 40-50 m/min; the glue coating amount is 15-18g/m2。
CN201910903928.3A 2019-09-24 2019-09-24 Plastic film uncovering type special code anti-counterfeit label and preparation method thereof Withdrawn CN110766118A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113299182A (en) * 2021-05-30 2021-08-24 蒋天有 Anti-counterfeit label and manufacturing process thereof
CN114103504A (en) * 2021-11-26 2022-03-01 上海美美尚隽印刷有限公司 Printing process of anti-counterfeiting traceable invisible code and color box for printing invisible code

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113299182A (en) * 2021-05-30 2021-08-24 蒋天有 Anti-counterfeit label and manufacturing process thereof
CN114103504A (en) * 2021-11-26 2022-03-01 上海美美尚隽印刷有限公司 Printing process of anti-counterfeiting traceable invisible code and color box for printing invisible code
CN114103504B (en) * 2021-11-26 2024-05-07 上海美美尚隽印刷有限公司 Printing process of anti-counterfeiting traceable invisible codes and color box for printing invisible codes

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