1. A positioning frame of anti-counterfeiting holographic positioning paper is characterized in that the positioning frame is arranged on a nickel plate and transferred onto the anti-counterfeiting holographic positioning paper in a mould pressing mode, and comprises a rectangular frame, cursor blocks, tracking lines, corner lines and gauge lines;

the rectangular frame is used for judging whether four corners of the anti-counterfeiting holographic positioning paper are right angles or not, and if not, judging that the anti-counterfeiting holographic positioning paper is deformed;

the cursor blocks are distributed on two sides of the same side of the rectangular frame and used for positioning the rectangular frame and changing deformation of the anti-counterfeiting holographic positioning paper;

the corner lines are positioned on the upper surface of the rectangular frame and correspond to four corners of the rectangular frame, each corner line comprises a single mark or a plurality of marks and is used for positioning the laser holographic pattern and detecting deviation values of the upper transverse, the lower transverse, the left longitudinal and the right longitudinal of the laser holographic pattern;

the tracking line is positioned on one side of the rectangular frame, the side of the tracking line is intersected with one side with the cursor block, and the tracking line is used for performing deviation rectifying tracking on the anti-counterfeiting holographic positioning paper and ensuring that the anti-counterfeiting holographic positioning paper is positioned at the same horizontal position; the length of the tracking line is greater than the side length of the rectangular frame;

the gauge lines are positioned on the cursor block side and the tracking line side of the rectangular frame and are arranged in a step shape, the gauge line positioned in the middle of each set of gauge lines is overlapped with the rectangular frame, and the rest gauge lines are parallel to the rectangular frame; the method is used for evaluating the squareness of the transverse cutting process in the preparation of the anti-counterfeiting holographic positioning paper.

2. The positioning bezel of claim 1, wherein the cursor block is a solid rectangle having a length of 5mm to 60mm and a width of 3mm to 10 mm.

3. The positioning bezel of claim 1 or 2, wherein the width of the corner line is 0.1mm to 0.3 mm.

4. The preparation method of the anti-counterfeiting holographic positioning paper based on the positioning frame of claim 1 is characterized by comprising the following steps:

continuously coating on a polyester film, and volatilizing through a drying tunnel to obtain a resin coating;

transferring the laser holographic pattern and the positioning frame arranged on the nickel plate to the resin coating by adopting a die pressing process to form a PET holographic transparent film;

carrying out evaporation on the surface of the PET holographic transparent film to form a coating film with a laser surface;

cutting the coated film according to the specification of the product, removing inferior films after cutting, and keeping a finished film;

coating a water-based adhesive on the surface of the finished product film according to the position of the corner line and the tracking line on the finished product film, compounding and drying the water-based adhesive and the base paper, and transferring the laser information layer on the finished product film to the base paper;

if the positioning paper is composite paper, cutting the positioning paper into a plurality of anti-counterfeiting holographic positioning papers according to specifications based on gauge lines; if the positioning paper is transfer paper, the PET film is peeled by utilizing the binding force of the adhesive and the coating film, and then the PET film is cut into a plurality of anti-counterfeiting holographic positioning papers according to specifications based on gauge lines.

5. The preparation method according to claim 4, wherein the surface of the PET holographic transparent film is evaporated with metal aluminum to form an aluminum-plated film; or depositing zinc sulfide by vapor deposition to form a zinc sulfide plated film.

6. The production method according to claim 4 or 5, wherein the resin coating layer is produced to have a thickness of 1 μm to 3 μm.

7. The detection method based on the preparation method of claim 4, which is characterized by comprising the following steps:

comparing the film calibrated by the standard pattern with the positioning frame of the anti-counterfeiting holographic positioning paper, and displaying the actual deformation of the anti-counterfeiting holographic positioning paper;

if the actual deformation degree exceeds the preset acceptable deformation degree, the anti-counterfeiting holographic positioning paper is unqualified, otherwise, the anti-counterfeiting holographic positioning paper is qualified.

Background

The holographic anti-counterfeiting positioning paper has excellent anti-counterfeiting performance, and can be used for packaging commodities such as cigarettes, wines, daily necessities, health care products, medicines and the like. With the increasingly wide application of holographic anti-counterfeiting positioning paper in life, in order to improve the printing efficiency, a printing factory has higher and higher requirements on the positioning precision of the holographic anti-counterfeiting positioning paper, but because a PET base film as a raw material is easy to be heated and deformed, whether a borne holographic anti-counterfeiting pattern is distorted or deformed is unknown. The precision of the holographic anti-counterfeiting positioning paper can not meet the requirement, the qualification rate of the positioning paper product can not be ensured, and the printing efficiency can not be ensured.

Patent document CN201811551643.X discloses a transfer platinum cat eye positioning paper and a preparation process thereof, and the technical scheme of the patent document mainly discloses that the combination of a paper aluminum layer and paper is firm through processes such as UV coating and mould pressing, the pattern information of a platinum cat eye plate can be completely reduced, and the deviation of the precision nesting is within +/-0.5 mm. The process has the following defects: the paper squareness control precision in the transverse cutting process is less than 1mm, the precision range is large, no specific positioning control method is provided, and the high-precision requirement cannot be met.

Patent document CN105599473B discloses a holographic positioning precision printing method and a holographic positioning precision printing apparatus, and the technical directions provided by this patent document are: the printer judges the position of the holographic pattern to be registered with the printed pattern by identifying the laser triangular mark on the paper. And a paper positioning and stretching device is arranged before the printing color group, so that the paper plate width is matched with the printing plate width. The method changes the distance of the paper plate through the printing tension to achieve the purpose of accurate registration of the holographic image and the printed image. The method has certain defects that the paperboard is thick, the requirement on the tension of equipment is high, the tensile deformation of the paper is small, and only the deviation of the plate width of the paper can be finely adjusted. When the deviation between the paper plate width and the printing plate width is large or the size fluctuation is frequent, the accurate overprinting cannot be realized.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a positioning frame of anti-counterfeiting holographic positioning paper, a preparation method and a detection method, and aims to improve overprinting precision and detection efficiency by detecting and adjusting the distortion of the holographic anti-counterfeiting positioning paper in the production process.

In order to achieve the above object, in one aspect, the present invention provides a positioning frame of an anti-counterfeit holographic positioning paper, which is disposed on a nickel plate and transferred onto the anti-counterfeit holographic positioning paper by a mold pressing method, including: the device comprises a rectangular frame, cursor blocks, tracking lines, corner lines and gauge lines;

the rectangular frame is used for judging whether the anti-counterfeiting holographic positioning paper is deformed, and when the four corners of the anti-counterfeiting holographic positioning paper are not right angles, the anti-counterfeiting holographic positioning paper is judged to be deformed;

the cursor blocks are distributed on two sides of the same side of the rectangular frame and used for positioning the rectangular frame and changing the deformation of the anti-counterfeiting holographic positioning paper;

the corner lines are positioned on the upper surface of the rectangular frame and correspond to four corners of the rectangular frame, each corner line comprises a single mark or a plurality of marks and is used for positioning the laser holographic pattern and detecting the deviation values of the upper transverse, the lower transverse, the left longitudinal and the right longitudinal of the image;

the tracking line is positioned on one side of the rectangular frame, the side of the tracking line is intersected with one side with the cursor block, and the tracking line is used for performing deviation rectifying tracking on the anti-counterfeiting holographic positioning paper and ensuring that the anti-counterfeiting holographic positioning paper is positioned at the same horizontal position; the length of the tracking line is greater than the side length of the rectangular frame;

the gauge lines are located on the cursor block side and the tracking line side of the rectangular frame and are arranged in a ladder shape, the gauge line located in the middle is overlapped with the rectangular frame, and the rest gauge lines are parallel to the rectangular frame and used for evaluating the squareness of a transverse cutting process in the preparation of the anti-counterfeiting holographic positioning paper.

Preferably, the cursor block is a solid rectangle with a length of 5 mm-60 mm and a width of 3 mm-10 mm.

Preferably, the width of the angular line is 0.1mm to 0.3 mm;

on the other hand, the invention provides a preparation method of anti-counterfeiting holographic positioning paper, which comprises the following steps:

continuously coating on a polyester film, and volatilizing through a drying tunnel to obtain a fixed resin coating;

transferring the laser holographic pattern and the positioning frame arranged on the nickel plate to the resin coating by adopting a die pressing process to form a PET holographic transparent film;

carrying out evaporation on the surface of the PET holographic transparent film to form a coating film with a laser surface;

cutting the coated film according to the specification of the product, removing inferior films after cutting, and keeping a finished film;

coating a water-based adhesive on the surface of the finished product film according to the position of the corner line and the tracking line on the finished product film, compounding and drying the water-based adhesive and the base paper, and transferring the laser information layer on the finished product film to the base paper;

if the positioning paper is the composite paper, cutting the positioning paper into a finished flat paper card product according to specifications based on the gauge; if the positioning paper is transfer paper, the resin coating and the PET film are peeled off by utilizing the binding force of the adhesive and the coating film, and the film is cut into a finished flat paper card product according to specifications based on a gauge line.

Preferably, metal aluminum is evaporated on the surface of the PET holographic transparent film to form an aluminum-plated film; or depositing zinc sulfide by vapor deposition to form a zinc sulfide plated film.

Preferably, the thickness of the prepared resin coating is 1 μm to 3 μm.

On the other hand, the invention provides a detection method of anti-counterfeiting holographic positioning paper, which specifically comprises the following steps:

comparing the obtained film with the positioning frame of the anti-counterfeiting holographic positioning paper by the standard pattern calibration, and displaying the actual deformation of the anti-counterfeiting holographic positioning paper;

if the actual deformation degree exceeds the preset acceptable deformation degree, the anti-counterfeiting holographic positioning paper is unqualified, otherwise, the anti-counterfeiting holographic positioning paper is qualified.

Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

the invention provides a positioning frame of anti-counterfeiting holographic positioning paper, which is designed to a nickel plate according to the preparation of the anti-counterfeiting holographic positioning paper, and is transferred to the anti-counterfeiting holographic positioning paper in a mould pressing mode, so that the loss of the positioning frame and the difficulty in positioning and positioning during detection can be avoided; the frame of fixing a position simultaneously includes: the device comprises a rectangular frame, cursor blocks, tracking lines, corner lines and gauge lines; the rectangular frame is used for judging whether the anti-counterfeiting holographic positioning paper is deformed or not only by detecting whether one corner is a right angle or not; the cursor block can more intuitively identify and judge the deformation of the anti-counterfeiting holographic positioning paper and simultaneously plays a role in electric eye identification; the angular line can be used for measuring deformation of the irregular image; the tracking line can perform deviation rectifying tracking on the anti-counterfeiting holographic positioning paper, so that the anti-counterfeiting holographic positioning paper is ensured to be in the same horizontal position; the gauge lines can be used for detecting whether the cutting of the anti-counterfeiting holographic positioning paper is standard or not, so that the positioning frame provided by the invention can be used for detecting whether the anti-counterfeiting holographic positioning paper is deformed or not from various aspects, and in the manufacturing process, the yield can be effectively improved according to the positioning frame, and the operation of the manufacturing process is facilitated. During detection, the anti-counterfeiting holographic positioning paper can be compared with a mask calibrated by a standard pattern to position the frame, so that the actual deformation of the anti-counterfeiting holographic positioning paper is obtained, and the detection efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a positioning frame according to an embodiment of the present invention;

FIG. 2 is a detailed schematic view of a gauge wire provided by an embodiment of the present invention;

FIG. 3 is a flowchart of a method for preparing anti-counterfeiting holographic positioning paper according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The holographic patterns of various products are different, and if the anti-counterfeiting holographic positioning paper is positioned only by the holographic patterns in the manufacturing process, the deformation quantity of the anti-counterfeiting holographic positioning paper is difficult to detect, and the dimensional accuracy is difficult to control. Therefore, the invention provides a positioning frame applied to anti-counterfeiting holographic positioning paper and a preparation method thereof, wherein the positioning frame is photoetched to a nickel plate and is impressed on a coating along with a holographic pattern; whether the holographic pattern is deformed or not or the size of the holographic pattern does not reach the standard can be measured by utilizing the positioning frame; the mould pressing process and the composite process are key processes, the precision of the product is controlled by the two processes, and the two processes need to adopt positioning frames for control.

Example 1

As shown in fig. 1, the embodiment provides a positioning frame of anti-counterfeit holographic positioning paper, which is disposed on a nickel plate and transferred to the anti-counterfeit holographic positioning paper by mold pressing, and comprises: the device comprises a rectangular frame, cursor blocks, tracking lines, corner lines and gauge lines;

the rectangular frame is used for judging whether the anti-counterfeiting holographic positioning paper is deformed, and when the four corners of the anti-counterfeiting holographic positioning paper are not right angles, the anti-counterfeiting holographic positioning paper is judged to be deformed;

specifically, according to the characteristics of a rectangle, a parallelogram with one corner being a right angle is ensured to be a rectangle; in the production process, whether the anti-counterfeiting holographic positioning paper is deformed can be judged only by detecting whether one corner is a right angle; other figures, such as circles, diamonds and the like do not have the characteristic and cannot be used as positioning frames;

the cursor blocks are distributed on two sides of the same side of the rectangular frame and used for positioning the rectangular frame and changing the deformation of the anti-counterfeiting holographic positioning paper;

specifically, because the common PET base film is still in a transparent state after being coated, in the practical application process, the rectangular frame can only identify that the anti-counterfeiting holographic positioning paper is deformed, but the specific deformation degree cannot be obtained; the cursor block is solid and is displayed as white after being molded on the base film with the coating, and the cursor block is easy to identify because the PET base film and the coating are transparent, so that the size of deformation can be easily observed by naked eyes based on the cursor block, and the precision of the anti-counterfeiting holographic positioning paper is easy to regulate and control; in addition, the cursor block also plays a role in electric eye recognition in each process of preparing the anti-counterfeiting holographic positioning paper, and aims to detect the stability of the plate distance;

specifically, the cursor blocks are solid rectangles, are positioned on the same side of the rectangular frame and are distributed on two sides, are 5-60 mm long and 3-10 mm wide, and are used for clearly identifying whether the holographic anti-counterfeiting positioning paper is distorted in the production process, so that the positioning accuracy of the rectangular frame is ensured;

the corner lines are positioned on the upper surface of the rectangular frame and correspond to four corners of the rectangular frame, each corner line comprises a single corner line or a plurality of corner lines and is used for positioning the image position and detecting deviation values of upper, lower, transverse, left, longitudinal and right longitudinal directions of the image;

specifically, the angular lines are positioned at four corners of the rectangular frame, each angular line is in a right-angle shape and is perpendicular to the rectangular frame, usually, one or more angular lines are arranged at each position, each angular line is unlimited in length, and the width is 0.1 mm-0.3 mm; in practical application, the outermost frame of the laser holographic pattern is aligned with the innermost frame of each corner line, when the laser holographic pattern is an irregular pattern, the deformation quantity of the laser holographic pattern is not easy to be accurately measured, and at the moment, the specific deviation value of the laser holographic pattern can be obtained only by measuring the deviation of the corner line aligned with the outermost frame of the laser holographic pattern, so that the dimensional accuracy can be ensured when each procedure is subjected to dimensional adjustment, and the precision is ensured to be +/-0.15 mm;

the tracking line is positioned on one side of the rectangular frame intersected with one side with the cursor block and is used for performing deviation rectifying tracking on the anti-counterfeiting holographic positioning paper to ensure that the anti-counterfeiting holographic positioning paper is in the same horizontal position; the length of the tracking line is greater than the side length of the rectangular frame;

specifically, the tracking line is parallel to one side of the rectangular frame, is intersected with one side of the rectangular frame with the cursor block, is longer than the rectangular frame, has the width of 1-5 mm, and is used for performing deviation rectifying tracking on the anti-counterfeiting holographic positioning paper to ensure that the anti-counterfeiting holographic positioning paper is in the same horizontal position;

when no positioning frame or tracking line exists, the equipment is subjected to deviation rectification and tracking by a film edge or a paper edge, so that the condition of losing marks due to fluctuation is easy to occur, and defective products can be generated due to poor stability; the design of the tracking line has a certain width, and the deviation correcting and tracking device is easy to recognize and track, so that the stability of the product can be ensured;

the gauge lines are positioned on the cursor block side and the tracking line side of the rectangular frame and are arranged in a step shape, the gauge line positioned in the middle is superposed with the rectangular frame, and the rest gauge lines are parallel to the rectangular frame and are used for evaluating the squareness of a transverse cutting process in the preparation of the anti-counterfeiting holographic positioning paper; even if a square is not used for measurement, whether the cutting of the anti-counterfeiting holographic positioning paper is standard or not can be judged by observing the gauge line during inspection;

specifically, as shown in fig. 2, the gauge lines are located on both sides of the rectangular frame, namely: one side with cursor block and one side with tracking line; 1-5 groups of gauge wires exist on each side, and 3-15 gauge wires exist in each group; each thickness is 0.1 mm-0.3 mm; each group of gauge lines are arranged in a ladder shape, the length is not limited, the gauge line in the middle is superposed with the rectangular frame, and the other gauge lines are parallel to the rectangular frame; the number of each group of gauge lines is the same for the same corresponding surface of each rectangular frame, the precision of a transverse cutting process in the preparation of the anti-counterfeiting holographic positioning paper is mainly detected, and the paper squareness is usually controlled to be less than 0.5 mm.

Example 2

As shown in fig. 3, the embodiment provides a method for preparing anti-counterfeiting holographic positioning paper, which comprises the following steps:

(1) a coating process:

continuously coating an imaging release layer on a Polyester (PET) film by using a high-speed coating machine; after the solvent is completely volatilized through a drying tunnel, a fixed resin coating with the thickness of 1-3 mu m is obtained; the resin coating is an imaging release layer;

the imaging release layer has three characteristics: the PET film has certain binding force, good printing adaptability and hardness which can adapt to specific mould pressing;

the softening point of the coating resin is about 140 degrees generally, and the coating resin is used as a carrier of a die pressing information layer and is suitable for die pressing laser effect;

for the selection of the base film, only a PET film can be used as positioning paper in the prior art;

(2) and (3) a die pressing procedure:

the die pressing is a technological process of impressing laser holographic patterns on the nickel plate onto the resin coating by utilizing the thermal change performance of the chemical coating; the laser pattern is generated, the mould pressing process is not separated, and the key process of positioning the finished film is also influenced by the mould pressing;

in the embodiment, a die pressing procedure is adopted, and the laser holographic pattern and the positioning frame arranged on the nickel plate are transferred to the resin coating to form the PET holographic transparent film;

(3) an aluminum plating process:

performing metal vacuum evaporation on the surface of the PET holographic transparent film on a vacuum aluminum plating machine to form an aluminum plating film with a laser surface effect of metallic luster;

at present, media such as aluminum, zinc sulfide and the like are adopted for evaporation, other metals with metallic luster can be evaporated theoretically, but from the aspects of economy and stability, aluminum and zinc sulfide are most used at present;

(4) slitting:

the aluminizer is cut on a cutting machine according to the product specification, the defective films can be removed while the required specification of the film products is ensured, and the quality of the finished film is ensured; the working procedure is not only a production working procedure but also an inspection working procedure;

(5) a compounding procedure:

coating a water-based adhesive on the surface of the aluminizer and compounding and drying the aluminizer with base paper according to the position of an angle line and a tracking line on the aluminizer, wherein the step is to transfer a laser information layer on a film product to the base paper;

it should be pointed out that in the prior preparation of the anti-counterfeiting holographic positioning paper, a deviation-rectifying tracking device is also arranged on the equipment, but the equipment is usually used for tracking the edge of the PET film or the edge of paper, so that the label is easily lost due to the fluctuation of the edge of the PET film or the edge of paper, the stability is not good, and the qualification rate of film products is low; in the embodiment, the tracking line is designed on the nickel plate and is molded on the PET film, and has a certain width, so that the tracking line is very easy to identify and can ensure the stability of the film product;

if the positioning composite paper is prepared, directly carrying out a transverse cutting process;

if the positioning transfer paper is prepared, the PET film needs to be peeled off and then the transverse cutting process is carried out;

(6) a transverse cutting process:

if the positioning composite paper is prepared, cutting the paper into a finished flat paperboard product according to specification requirements based on gauge lines after the compounding process is finished; if the transfer paper is prepared in a positioning mode, the PET film is peeled by utilizing the binding force of the adhesive and the aluminized film, and then the PET film is cut into a finished product of the plain paperboard according to the specification requirement.

Based on the preparation method of the anti-counterfeiting holographic positioning paper, the method for detecting whether the anti-counterfeiting holographic positioning paper is qualified is as follows:

the film calibrated by the standard pattern and the prepared anti-counterfeiting holographic positioning paper are used for registration, and the deformation condition of the anti-counterfeiting holographic positioning paper can be clearly displayed by comparing the positioning frames printed on the film and the anti-counterfeiting holographic positioning paper.

In summary, compared with the prior art, the invention has the following advantages:

the invention provides a positioning frame of anti-counterfeiting holographic positioning paper, which is designed to a nickel plate according to the preparation of the anti-counterfeiting holographic positioning paper, and is transferred to the anti-counterfeiting holographic positioning paper in a mould pressing mode, so that the loss of the positioning frame and the difficulty in positioning and positioning during detection can be avoided; the frame of fixing a position simultaneously includes: the device comprises a rectangular frame, cursor blocks, tracking lines, corner lines and gauge lines; the rectangular frame is used for judging whether the anti-counterfeiting holographic positioning paper is deformed or not only by detecting whether one corner is a right angle or not; the cursor block can more intuitively identify and judge the deformation of the anti-counterfeiting holographic positioning paper and simultaneously plays a role in electric eye identification; the tracking line can measure deformation corresponding to the irregular image; the gauge lines can be used for detecting whether the cutting of the anti-counterfeiting holographic positioning paper is standard or not, so that the positioning frame provided by the invention can be used for detecting whether the anti-counterfeiting holographic positioning paper is deformed or not from various aspects, and in the manufacturing process, the yield can be effectively improved according to the positioning frame, and the operation of the manufacturing process is facilitated. During detection, the anti-counterfeiting holographic positioning paper can be compared with a mask calibrated by a standard pattern to position the frame, so that the actual deformation of the anti-counterfeiting holographic positioning paper is obtained, and the detection efficiency is improved.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.