195 results about "Overprinting" patented technology

The invention provides a real-time monitoring control method and system for VOCs release of printing equipment. Real-time parameters in the printing process are monitored in real time, and a VOCs emission prediction value corresponding to the current printing task is obtained according to the real-time parameters in combination with the VOCs emission prediction model; the overprinting error of the current printing process is obtained according to the overprinting error detection strategy in combination with the reaction temperature and the treatment air volume of the current drying oven; the VOCs emission predicted value and the overprinting error are combined with a VOCs emission-printing quality double-target optimization function to obtain the air volume and temperature of a drying oven matched with the current printing quality and VOCs release; and regulating and controlling the air speed and the temperature of the drying oven of the printing equipment according to the air volume and the temperature of the drying oven matched with the current printing quality and the VOCs release. The system comprises a module corresponding to the method.

The invention discloses a method for controlling multi-color printing of a thermal transfer printer. The method comprises the following steps: visually editing and typesetting, displaying a separated preview page according to preset color layer decomposition parameters, performing color separation processing on an original design page according to the preset color layer decomposition parameters, and supporting synchronous printing, asynchronous printing and cross-medium printing. An original design page is decomposed into single-color printing instruction sequences according to color layers through a color separation processing module. Based on the medium position real-time tracking technology, the main control circuit board dynamically coordinates all the single-color printing units to execute color separation printing when the medium moves to the corresponding position, and three modes of same-medium multi-color synchronous printing, asynchronous printing and cross-medium parallel printing are supported. The problems that a traditional heat transfer printing machine is low in multi-color overprinting precision and poor in efficiency are solved, and the flexibility and production efficiency of color mark printing are remarkably improved.

The invention relates to the technical field of printing devices, in particular to a photo-etching positioning paper printing method with an image-text suspension dynamic effect, which comprises the following steps of: performing positioning printing on photo-etching paper, determining whether overprinting deviation is generated or not, and determining whether the overprinting deviation is within an error range of single printing or not; when the rotating angle meets the printing requirement, the paper feeding speed is adjusted, and the rotating speed of the printing cylinder is correspondingly adjusted, or the telescopic distance of the first supporting roller is adjusted; determining whether the deviation degree changes after a plurality of times of overprinting, and predicting whether the photoetching paper has a paper deformation printing hidden danger under the current initial printing pressure according to the temperature and humidity changes; the tension condition of the photoetching paper is reflected according to the actual pressure borne by the first supporting roller, or the paper feeding speed or the initial printing pressure is adjusted according to the comprehensive deformation prediction value. According to the method, the printing parameters of the printing device are correspondingly adjusted by predicting the overprinting deviation of printing, so that precise overprinting of the holographic pattern and the printing content is ensured.

The invention provides a nameplate printing defect detection method and system based on image segmentation. The method comprises the following steps: acquiring a nameplate surface image and carrying out distortion correction and brightness homogenization preprocessing; generating a pixel-level segmentation mask by using the semantic segmentation network; template registration is carried out based on the segmentation result, and a deformation field vector and a registration difference chart are calculated; performing defect area extraction and type identification on the difference image; according to the method, deep learning semantic segmentation is adopted to realize pixel-level analysis of a nameplate printing area, deformation field registration is combined to accurately quantify overprinting offset, defect quantitative evaluation is realized through multi-dimensional scoring, the detection rate reaches 99% or above, and the detection time of a single piece is less than 0.5 second.

The invention discloses a method for rapidly adjusting overprinting offset of main and auxiliary grid patterns, and aims to solve the problems of tedious steps, long time consumption, generation of reworked pieces, high operation difficulty and the like in main and auxiliary grid overprinting debugging in existing solar cell screen printing. A plastic battery piece simulation model consistent with a battery piece produced in a production line in size is manufactured, and the surface of the plastic battery piece simulation model is coated with a preset main grid pattern. By means of the process of screen calibration, simulation printing and offset debugging and repeated debugging, the offset condition of main grid printing is rapidly determined through a simulation model, machine parameters are adjusted, and the steps of drying and auxiliary grid printing in the prior art are omitted. According to the method, the debugging time is shortened to about 3 minutes, no reworked piece is generated, meanwhile, operation is easy and convenient, new employees are easy to master, the efficiency of main and auxiliary grid overprinting debugging on the solar cell production line is greatly improved, the production cost is reduced, and remarkable economic benefits and application prospects are achieved.

The utility model relates to a decorative plate, in particular to an imitated metal texture metalized gauze multilayer plate which comprises a transparent layer, a metalized gauze layer, a bonding layer and a back plate layer which are sequentially arranged, and the metalized gauze layer comprises gauze and a metal coating arranged on the surface of the gauze. The metalized gauze multilayer board imitating the metal texture can achieve the effect of the metal texture, is not prone to color fading, and meanwhile can achieve multicolor overprinting, stereoscopic patterns and the like.

The invention discloses a packaging box printing quality detection method based on image processing, and belongs to the field of printing quality detection. The method comprises the following steps: firstly, carrying out multi-angle image acquisition on a printed packaging box, extracting a color evaluation value, an overprinting deviation value and a defect degree value after preprocessing, and carrying out weighted calculation on a printing quality index; single box and batch qualification is judged based on indexes, and unqualified batches analyze and trace reasons by constructing a printing feature triangle and combining the similarity of the gravity center distance and the angle difference value of a historical fault database; according to qualified batches, analyzing index fluctuation coefficients and trends of nearly Y batches, and constructing a grading early warning mechanism; according to the invention, multi-dimensional quantitative evaluation, intelligent tracing and dynamic early warning are realized, the problems of single index, dependence on manpower and lack of perspectiveness of traditional detection are solved, and the objectivity, efficiency and scientificity of detection are improved.

The invention relates to a TOPCon solar cell and a preparation method thereof, the cell comprises a silicon substrate, and the back surface of the silicon substrate is provided with metallized regions and non-metallized regions which are alternately arranged; a tunneling oxide layer, a doped polycrystalline silicon layer, a back passivation layer and a back metal electrode are sequentially arranged in the metalized region from inside to outside, and the back metal electrode is in ohmic contact with the doped polycrystalline silicon layer; the non-metallization area is recessed inwards and is closer to the silicon substrate than the metallization area; the non-metallization area comprises a mark point area and a non-mark point area; the height difference between the mark point area and the non-mark point area is 0.1 [mu] m-10 [mu] m. The obvious height difference is formed between the mark point area and the non-mark point area, the mark points can be accurately and effectively recognized, guarantee is provided for the printing precision of follow-up overprinting, the yield of solar cell production can be increased, and the production cost is reduced.

The invention belongs to the technical field of ceramic decorative materials and photochromism, and provides a photochromic dynamic pattern design method for multilayer overprinting partition photosensitive ceramic stained paper aiming at the industrial pain points that patterns of traditional ceramic stained paper are fixed, and existing photochromic stained paper is low in overprinting precision, slow in color change response and the like. According to the method, a five-layer composite structure is constructed and sequentially comprises a ceramic substrate layer, a bottom bonding layer, a photochromic functional layer, a partitioned photosensitive control layer and a surface protection layer, multi-region independent photochromism is achieved through the partitioned photosensitive control technology, and the overprinting precision can reach within 5 microns. The photochromic response time of the product does not exceed 0.5 second, the cycle discoloration life is not less than 150 thousand times, the interlayer peeling strength reaches 3N / cm or above, the product can be widely applied to the field of architectural ceramic and domestic ceramic decoration, and the visual expressive force and interactive experience of the product are effectively improved.

The utility model discloses a three-stage tension control unreeling device for an easy-to-deform printing material, which relates to the field of printing machinery and comprises an unreeling device, and a first-stage printing material tension disturbance absorption regulation and control device, a second-stage printing material tension disturbance absorption regulation and control device and a third-stage printing material tension regulation and control device are arranged on a printing material output channel. The third-stage printing material tension regulation and control device comprises a pair of conveying roller sets and a guide roller, a tension sensor is installed on the guide roller, a first fixed guide roller and a second fixed guide roller are arranged in front of and behind the guide roller respectively, a driving roller is driven by a motor controlled by a frequency converter, and the output end of the tension sensor is connected to the input end of the frequency converter; the device is provided with three stages of regulation and control devices, stretching is carried out through the first-stage regulation and control device, shaping is carried out through the second-stage regulation and control device, accurate adjustment is carried out through the third-stage regulation and control device, it is guaranteed that the deformation of a printing material in the subsequent process is minimum, tension is stable, and finally overprinting is accurate when the printing material prone to deformation is printed in the printing unit; and multi-color overprinting high-quality printing can be completed.

The invention discloses an overprinting device and method for flexible packaging in the technical field of printing, and aims to solve the problems that in the prior art, due to the fact that a flexible packaging plate is printed firstly and then subjected to auxiliary processing, product overprinting is inaccurate, and the process is tedious. The device comprises a conveying line, a plurality of registration printing assemblies are arranged on the conveying line, each registration printing assembly comprises a support and a printing roller rotationally arranged on the support, the support is further provided with a first driving assembly used for driving the printing roller to rotate, and the printing roller is provided with an ink printing area and a mark stamping area. Each support is provided with an ink supply assembly, and the ink supply assemblies are used for supplying ink to an ink printing area. The method is used for achieving efficient printing of the packaging product and manufacturing of the anti-fake technology, optimization of the packaging product technology can be achieved without adopting extra complex equipment, the overprinting accuracy of the auxiliary technology can be effectively guaranteed, and therefore the product yield can be effectively increased.

The utility model relates to the technical field of printing machinery, in particular to a multi-face turnover seal which comprises a base. The shell is arranged on the base in a sliding mode, and the shell can slide relative to the base in the vertical direction; the spring is arranged between the base and the shell and is used for providing reset elastic force; the sensor is arranged on the shell and is used for detecting the position of the shell relative to the base; the multi-face seal penetrates through the base and is rotationally arranged in the shell; and the multi-surface seal can be automatically overturned to another seal surface after the seal operation is completed by pressing the shell. The inconvenience of frequently replacing stamps or carrying a plurality of stamps is avoided, and the office and operation efficiency is greatly improved. The seal template is ensured to be accurately positioned after being overturned each time, so that high-precision and high-efficiency automatic overprinting is realized.

This invention discloses a method for preparing printing ink for smooth, hard food surfaces, comprising the following steps: preparing a mixed solution of plant protein; mixing it with shellac in anhydrous ethanol, then adding polyol and pigment for dispersion, followed by grinding and filtration to obtain the final product. This invention enables gravure printing on the hard, smooth surfaces of food, exhibiting good adhesion, excellent ink transfer properties, clear and smooth printing, and a certain degree of water resistance. Furthermore, it controls the ink drying speed; black and white inks dry at a moderate speed to avoid cracking and peeling; color inks dry at a moderate speed to avoid clumping. It also allows for overprinting of two or more colors, and the ink has good abrasion resistance, preventing color fading during transportation after packaging.

The application provides a kind of carbon fiber mandrel main leaded soft plate overprint process, belong to soft plate printing technical field. Symmetrical, even arrangement each mandrel around center impression cylinder, start the air supply and exhaust unit of mandrel, anilox roll is sleeved on mandrel, close air supply and exhaust unit, anilox roll contracts and tightly and in mandrel. Wrap the printing material on the center impression cylinder, start the closed double doctor inking system for anilox roll quantitative ink supply, and by servo motor control mandrel and anilox roll relative center impression cylinder front and back displacement. Start the drive unit of printing material, while the printing material rotates around the center impression cylinder, each mandrel drives corresponding anilox roll to approach the center impression cylinder, and complete impression and overprint under the preset printing pressure. After completing overprint, start the air supply and exhaust unit again to replace each anilox roll, enter the next cycle of soft plate overprint. The application can realize the accurate overprint of soft printing material.

The invention relates to the technical field of textile printing and after-finishing, and discloses a gauze printing imitation sand washing process which comprises the following steps: performing chemical activation pretreatment on a gauze base material to provide a suitable surface for subsequent treatment; the split type printing paste with the interpenetrating network characteristic and the dual response function is prepared, and the binding force with a base material is enhanced; a pressure grading response type superposition overprinting process is adopted, and preliminary construction of patterns is achieved; an interpenetrating polymer network is constructed through a thermally induced chain reaction, and a printing structure is stabilized; and performing purification treatment and shaping finishing on the gauze to obtain a finished product. Chemical activation pretreatment is carried out on a gauze base material, functional printing paste containing dual-response microcapsules is cooperatively adopted, pressure and heat energy are used for carrying out grading and response type printing and curing on the paste, and in the single technological process, a finished product is endowed with excellent durability and fastness, soft hand feeling and controllable sand washing imitating appearance.

The utility model relates to the technical field of overprinting machines, and discloses an overprinting fountain solution dosage control device which comprises a solution box, a control mechanism is fixedly connected to the surface of the solution box, and a sealing mechanism is arranged at the top of the solution box. The control mechanism comprises a control seat, the control seat is fixedly connected to the left side of the liquid tank, a limiting plate is arranged in the control seat, a circular ring is fixedly connected to the right end of the limiting plate, sliding blocks are fixedly connected to the four ends of the surface of the circular ring correspondingly, and a supporting ring frame is fixedly connected to the bottom end of the circular ring; the middle of the bottom of the supporting ring frame is fixedly connected with a conical plug block, and the top of the limiting plate is fixedly connected with a supporting strip. According to the overprinting fountain solution dosage control device, the circular ring can be driven to slide correspondingly under the limitation of the circular ring in the solution box, finally, the conical plug block is driven to slide up and down, the gap between the conical plug block and the bottom end in the solution box is changed, operation is quite convenient, and therefore the overprinting fountain solution dosage control effect is achieved.

This invention provides an automated control method, system, and related equipment for screen printing, used to achieve automated alignment and improve the efficiency and accuracy of screen printing. The method in this invention may include: calculating a critical pixel value based on automatic block distance and resolution parameters, and generating a dilation kernel based on the critical pixel value to perform dilation processing on the overprinted image, so that adjacent black graphics with a pixel spacing not greater than a corresponding threshold form a connection; performing connected component detection on the dilated image, and iteratively merging the bounding rectangles of overlapping regions to obtain each independent block region in the overprinted image and recording the original coordinates of each independent block region; performing feature matching in the printed image and recording the matching coordinates of successfully matched regions; calculating the true positional deviation between the original coordinates and the matching coordinates, and adjusting the position of each independent block region in the overprinted image along the same direction as the true positional deviation to generate a corrected image.

The multicolor adhesive-edge-free heat transfer printing technology comprises the following steps that S1, a composite release film is prepared, and a release surface comprises a bottom layer printing area A, a pattern printing area B and an adhesive layer bearing area C of which the release force is sequentially increased; s2, the area A is coated with waterborne polyurethane-acrylic acid hybrid bottom layer slurry, hot air drying and ultraviolet light curing are sequentially carried out, and a high-elastic bottom layer is formed; s3, carrying out multicolor overprinting on the B area by using at least two aqueous slurries in nano pigment dispersion liquid, and immediately carrying out photocuring after each color is printed; s4, the pattern layer of the area C is coated with water-based bonding slurry, and pre-drying is carried out; and S5, the treated transfer printing film and the fabric are overlapped for transfer printing, the release film is torn off after cooling, and the multicolor adhesive-edge-free transfer printing product is obtained. According to the sectional type multicolor printing curing process, the multicolor transfer printing effect of high performance, high environmental protection performance and high water resistance is achieved.

This invention provides a method, apparatus, and coating machine for adaptive intercoating in secondary overprinting, relating to the field of lithium battery processing. The method includes: detecting the printing position during the secondary overprinting process using a color mark group; calculating the position deviation between the printing position and the target position; adjusting the phase of the gravure roller based on the position deviation; detecting the new printing position based on the phase-adjusted gravure roller; measuring the actual intercoating value based on the new printing position; comparing the actual intercoating value with the process setting value to obtain the secondary overprinting result; the secondary overprinting result is used to indicate whether the printing position is ahead or behind; and adjusting the speed of the gravure roller based on the secondary overprinting result to complete the secondary overprinting. This application improves the accuracy of intercoating in secondary overprinting by real-time correction of the gravure roller speed to match the material feed speed, forming a closed-loop adjustment.

The present invention provides a transfer film for holographic graphic printing, which has a layered structure consisting of a plastic base film layer [1], a release layer [2], and a transfer layer. The transfer layer is composed of transfer units arranged in a longitudinal and transverse manner. Each transfer unit contains a pattern used on a piece of board material for a package. The transfer layer has a holographic laser layer [4] and an aluminum plating layer [5]. The holographic laser layer has a laser effect pattern. The transfer layer also has a printed graphic layer [3]. The printed graphic layer has a blank space that is in a registration relationship with the laser effect pattern, and the registration deviation between the blank space and the laser effect pattern is ≤±10um. Since the release layer, printed graphic layer and holographic laser layer in the above-mentioned transfer layer are completed online in one go on the printing press, its high precision, integrated features and novelty, creativity and practicality have changed the defects of the existing iron printing process, such as multiple processes, difficulty in controlling the registration accuracy and high loss.

The invention discloses a laser transfer paper gravure cursor recognition system which comprises a transfer equipment body, a visual detection system and a central control system, and the transfer equipment body is sequentially provided with an unwinding unit, a plurality of transfer color cells and a winding unit in the paper feeding direction of a printing material. The visual detection system comprises at least one first visual detection device and a second visual detection device, and the first visual detection device is installed behind a transfer printing color group serving as a reference and used for capturing an original pattern on a printing material and a reference color pattern transferred by the reference color group in real time. The second visual inspection device is arranged behind the last transfer printing color group and in front of the winding unit and is used for detecting the overprinting precision and color quality of a final transfer printing finished product; the visual detection system is in signal connection with the central control system to form a closed-loop control loop; a storage module is arranged in the central control system and used for storing standard pattern data.

The invention discloses full-automatic roll-to-roll screen printing equipment. The equipment comprises a printing platform; the screen printing plate assembly is arranged on the printing platform and comprises a screen printing plate frame, a fixed outer frame and a movable inner frame, the fixed outer frame and the movable inner frame are connected to the screen printing plate frame, the screen printing plate frame is connected to the printing platform through a first vibration reduction part, the movable inner frame is connected to the screen printing plate frame and located in the fixed outer frame, and a second vibration reduction part is arranged between the fixed outer frame and the screen printing plate frame; the tension regulation and control assembly is located between the printing unit and the automatic discharging unit and connected to the printing unit, a coiled material enters the printing unit after passing through the tension regulation and control assembly, the tension regulation and control assembly comprises a tension feedback piece for detecting the tension of the coiled material in real time and a driving regulation and control roller set, and the tension feedback piece is used for detecting the tension of the coiled material in real time; and when the tension fluctuation is greater than a critical value, the driving regulation and control roller group is started, and the driving regulation and control roller group adaptively regulates and controls the tension of the coiled material in a high-speed printing scene, so that the tension of the coiled material is kept balanced, and the printing quality of overprinting precision is improved.

This invention discloses a fully automated screen printing method for labels based on CCD visual alignment, specifically including the following steps: material feeding control, substrate pretreatment, CCD visual alignment, dual CCD compensation printing, continuous alignment and overprinting, low-temperature curing, cooling, shaping and leveling, CCD visual final inspection, slitting and rewinding, and packaging output. This fully automated screen printing method for labels based on CCD visual alignment achieves precise alignment and real-time offset compensation between the screen and the substrate through dual CCD visual monitoring, improving overprinting accuracy. It employs ambient pressure low-temperature plasma pretreatment to enhance substrate adhesion, and three-stage low-temperature curing to prevent PET substrate deformation. Combined with full-width CCD final inspection to automatically remove defective products, this method achieves fully automated, high-precision, and high-stability label printing production, offering advantages such as precise alignment, uniform curing, strict quality control, and high production efficiency.

The application provides a paper blocking mechanism of a printer, which comprises a tray assembly, a paper blocking assembly, a paper taking assembly and a transmission assembly, the tray assembly comprises a tray which is arranged obliquely, opposite sides of the tray are provided with paper guide plates which are movably connected with the tray, the paper blocking assembly is arranged below the tray assembly, the paper blocking assembly comprises a blocking block which can rotate up and down, the paper taking assembly is arranged on one side of the tray assembly, and the transmission assembly is arranged at one end of the paper blocking assembly. The paper blocking mechanism has the beneficial effects that the positioning error of the paper head is reduced through the closed loop control of the transmission assembly and the paper blocking assembly, the overprint precision requirement of the color laser printing is met, the distance between the paper guide plates is adjusted, the mechanism is suitable for various media such as common copy paper, thick card paper, envelopes and labels, the gap of the transmission assembly is small, the friction of the paper blocking slider is low, the buffer structure prevents collision, the mechanism is not easy to deviate or wear during long-term operation, and the structure is simple and the operation is convenient.

The invention relates to the technical field of gravure printing machinery, and discloses a rapid locking and accurate positioning device for a gravure printing machine plate roller, the rapid locking and accurate positioning device comprises a bottom plate and a printing roller body, a mounting rod is arranged on the inner wall of the printing roller body, a second locking mechanism is arranged on one side of the upper part of the bottom plate, and a bearing seat is fixedly connected to the other side of the upper part of the bottom plate; a first locking mechanism is arranged in the bearing seat, a second locking mechanism is arranged in the bearing seat, the first locking mechanism comprises an outer sleeve, the outer wall of the outer sleeve is arranged on the inner wall of the bearing seat, a first bearing sleeves the outer wall of the outer sleeve, a vertical sliding groove is formed in the inner wall of the outer sleeve, and a pressed table is arranged on the middle side in the outer sleeve. By means of the first main locking and axial positioning mechanism, a fixing groove in the conical column is accurately meshed with a fixing block on the inner sleeve, the stable and reliable axial positioning effect is achieved, the printing roller is fundamentally prevented from shaking left and right in the high-speed running process, and a solid foundation is provided for high-precision overprinting.

The utility model discloses a carton color register printing calibration device, and particularly relates to the technical field of printing calibration, the carton color register printing calibration device comprises a mounting base and a first longitudinal frame, the top end of the mounting base is fixedly provided with two transverse sliding seats which are symmetrically distributed, and the top ends of the transverse sliding seats are slidably clamped with a second longitudinal frame; a printing roller is arranged between the first longitudinal frame and the second longitudinal frame, and a calibration mechanism is arranged between the first longitudinal frame and the printing roller and between the second longitudinal frame and the printing roller. The calibration mechanism comprises two first bearings which are symmetrically distributed, and the first bearings are fixedly connected to the top of the first longitudinal frame and the top of the second longitudinal frame in a clamped mode respectively. Therefore, the printing roller is automatically calibrated, the center line of the printing plate of the paper box is aligned with the scribed line in the middle of the printing roller, inaccurate overprinting caused by misalignment of the position of the printing plate is prevented, and then the quality of color-register printing of the paper box is improved.

This application discloses a method, apparatus, system, and storage medium for enhancing the quality of digital printed materials, relating to the field of digital enhancement technology. The method includes: acquiring a printed image of the material to be enhanced; segmenting and extracting multiple printed image features from the printed image; performing matching calculations on each printed image feature and a preset enhanced image matching template to obtain the mean absolute difference and weighted Euclidean distance between the printed image feature and the enhanced image matching template; when the mean absolute difference equals a preset absolute difference threshold and the weighted Euclidean distance equals a preset Euclidean distance threshold, using the printed image feature corresponding to the mean absolute difference and weighted Euclidean distance as the enhanced target image; determining the enhanced position based on the enhanced target image, and performing an enhanced operation on the enhanced position of the enhanced printed material. This application enables accurate matching between the enhanced image and the target image on the printed material, reducing registration errors and improving registration accuracy.

The application discloses a polyethylene film material suitable for high-speed gravure printing and a preparation method. The polyethylene film material is prepared from polyethylene with a density of 0.92-0.97 g / cm3 as raw material by adopting a 'five-layer co-extrusion blow molding+online longitudinal stretching' process, through step density layer design, the thickness ratio between layers is 1:1:2:1:1, and the polyethylene film material with a thickness of 20-25 mu is prepared through online twelve-roll longitudinal stretching. The polyethylene film material prepared by the application has high tensile strength (longitudinal), good elongation at break, and a 1% quadratic modulus (longitudinal) of 1356 MPa, and has good material rigidity. The polyethylene film material can meet the printing speed of 300-500 m / min in an ester-soluble ink system of a high-speed gravure printing machine, and the overlay precision is less than or equal to 0.2 mm. The polyethylene film material can provide technical guidance for the realization of polyethylene single material packaging.

The invention relates to a natural argil particle texture tipping paper printing system based on touch recognition and a preparation method, and relates to the technical field of printing. The system comprises a gravure plate roller 45-60 line 50-75 [mu] m engraving process special for a gravure printing unit, a touch recognition overprinting system laser or piezoelectric sensor processing control machine, a high-precision impressing system and a tension drying system. During preparation, the ratio of clay ink 1500-2200 meshes to water-based resin is 18-25: 72-80, the viscosity is 12-18 seconds, a coating of 0.2-0.3 g / cm < 3 > is formed through intaglio printing, and a touch recognition overprinting system achieves accurate overprinting with particle textures as color codes. The finished product has the roughness Ra of 3.5-4.2 microns, the water absorption rate of 3.2-4.5%, the aroma retention rate of 88-92% and the quantification of 30-34 g / m < 2 >, and is suitable for high-end tobacco packaging.

Disclosed herein are biorenewable adhesives for inks and varnishes, as well as methods of synthesizing and using adhesive compositions.