188 results about "Flexography" patented technology

The invention relates to the technical field of printing, in particular to a flexo printing machine control method and system based on machine vision. The method comprises the following steps: collecting surface image data of a printed matter in a motion state in real time, separating and identifying a preset printing feature region from the image data, and obtaining geometric feature parameters of the region relative to a reference position; generating a multi-axis cooperative position compensation instruction of the printing unit according to the deviation value of the geometrical characteristic parameter and a preset target characteristic; converting the position compensation instruction into an adjusting parameter of a servo driving system in real time, and dynamically adjusting the pressure of a printing roller of a printing unit and the displacement of a registration mechanism; and synchronously outputting a defect type judgment signal and correlating the adjustment parameter correction value based on the form change of the printing feature region in the updated image data. According to the method, the stability and the adjusting efficiency of the printing quality are improved, and the defects that a traditional method is lagged in response and inaccurate in adjustment are overcome.

The invention discloses a production process of an energy-saving and environment-friendly food packaging bag. The production process is realized through the following steps: S1, pretreatment of raw materials: carrying out physical activation treatment on a bio-based composite material; s2, multi-layer co-extrusion film blowing: precisely controlling the extrusion temperature in stages by adopting a gradient temperature control film blowing technology; s3, water-based ink printing, wherein water-based UV ink is used for flexographic printing; s4, ozone-ultraviolet synergetic sterilization: after the packaging bag is formed, the packaging bag enters a closed sterilization cabin to be sterilized; s5, slitting and forming: slitting the film into a customized size by adopting a laser slitting machine in a layered cutting mode, enhancing the interface bonding force through a bio-based composite material pre-activation technology, and reducing the use of an adhesive; the temperature of the three-layer structure is accurately regulated and controlled by adopting a gradient temperature control film blowing process, so that uniform compounding is realized; ozone permeation and ultraviolet photolysis are combined to realize synergistic sterilization, so that secondary pollution is avoided; and a biological enzymolysis recovery system is established to convert the waste into a PLA raw material, so that closed-loop production is formed.

A method for producing a surface finish on an electrically conductive substrate includes transferring an ink having a plurality of electrically conductive particles onto an area of a predetermined form and / or size on a surface of the electrically conductive substrate by gravure and / or flexo printing. The ink is heated to a temperature that is higher than a melting point of the electrically conductive particles to create a melt. The melt solidifies into the surface finish on the electrically conductive substrate.

Adhesive compositions disclosed herein can be applied to substrates using flexo-printing (via, e.g., photopolymer plate); cured to a hardened, tack-free state; and readily be rendered tacky on application of heat and pressure to accurately transfer foil to the substrates. An example adhesive composition includes a monomer component, an oligomer / resin component including one or more oligomers and one or more inert thermoplastic resins that are soluble in the monomers, and, where required, one or more free radical polymerization initiators.

A flexographic printing plate precursor is disclosed in which the size and the number of pinholes in a heat-sensitive mask layer are reduced in a simple manner, and to provide a flexographic printing plate almost free from disadvantages caused by the pinholes, based on the flexographic printing plate precursor. A flexographic printing plate precursor comprising at least a support (A), a photosensitive resin layer (B), a heat-sensitive mask layer (C) and a cover film (D) which are laminated in this order, characterized in that the surface energy and the surface roughness (Ra) of a surface of the cover film (D) which contacts with the heat-sensitive mask layer (C) are 25.0 to 40.0 mN / m and 0.01 to 0.2 μm, respectively, and that a protection layer (E) formed from a polymer compound dispersible in a developing solution is provided between the photosensitive resin layer (B) and the heat-sensitive mask layer (C).

The invention discloses a preparation method and device of a paper environment-friendly product adopting flexographic printing UV glue, the device comprises a gluing device, a die cutting device and a laminating device, the gluing device comprises a transmission assembly, an oil coating device and a gluing assembly, and the oil coating device and the gluing device are sequentially arranged along the transmission assembly; the laminating device comprises a mounting plate, a positioning frame, a pressing device, a lower pushing device and two-side pushing devices, the positioning frame, the pressing device, the lower pushing device and the two-side pushing devices are mounted on the same side face of the mounting plate, the positioning frame is arranged under the pressing device, the lower pushing device is arranged below the positioning frame, and the two-side pushing devices are arranged on the left side and the right side of the positioning frame respectively. The material pushing devices on the two sides obliquely extend from bottom to top. A through hole is formed in the portion, below the forming plate, of the mounting plate, and the through hole is in a long strip shape. A traditional UV adhesive tape is replaced with an online UV glue coating method, the production cost is greatly reduced, the production efficiency is improved, the use flexibility is high, the practicability is high, and high popularization significance is achieved.

Mold cylinder (06), wherein the mold cylinder (06) has a cylinder head (16) and two cylinder pins (17), and wherein the mold cylinder (06) has at least one cylinder channel (21), and wherein at least one holding device (22) for at least one application mold (04) is arranged in the cylinder channel (21), and wherein the at least one holding device (22) has a front fastening device (23) for receiving a beginning (26) of the at least one application mold (04) and a rear fastening device (24) for receiving an end (27) of the at least one application mold (04), and wherein the rear fastening device (24) is designed as a clamping device (24), and wherein the front fastening device (23) is pivotably arranged in the cylinder channel (21), and wherein two adjustable lateral support points (28;29) are arranged, on which the front mounting device (23) is supported in a circumferential direction (U) relative to the cylinder channel (21), characterized in that the two lateral support points (28; 29) are each adjustable by means of a respective eccentric device (32; 33) and that the two eccentric devices (32; 33) are connected to each other via at least one connecting device (36) movable relative to the cylinder channel (21) and that an adjustment mechanism (34) is arranged, by means of which the relative position of the two eccentric devices (32; 33) and the connecting device (36) is adjustable on the one hand to the cylinder channel (21) on the other hand and that in addition to the two lateral support points (28;29) a central support point (31) is arranged at which the front mounting device (23) is supported in the circumferential direction (U) relative to the cylinder channel (21) and that the front mounting device (23) is arranged pivotably about the central support point (31) in the cylinder channel (21).

The utility model relates to the technical field of printing machines, in particular to flexible printing equipment with adjustable cold and hot gold stamping positions. Comprising a rack, a plurality of flexographic printing devices, a guide column arranged at the top of the rack, an adjusting plate which is connected to the top of the rack in a sliding mode and is connected with the guide column in a sliding mode, a locking piece used for locking the adjusting plate to the guide column or / and locking the adjusting plate to the rack, and digital jet printing devices sequentially arranged on the adjusting plate. The gold stamping film placing mechanism and the waste rolling mechanism are arranged on the adjusting plate and located above the hot gold stamping device, the digital jet printing device, the cold gold stamping device and the hot gold stamping device are all arranged above the flexographic printing devices in a suspended mode, and the adjusting plate can be adjusted to the position between any two flexographic printing devices. The digital jet printing position and the cold and hot gold stamping position can be adjusted conveniently, cold gold stamping and hot gold stamping can be integrated for selective use, and practicability is high.

This invention relates to the field of flexographic printing plate-making technology, specifically to a printing plate engraving device and method. The device includes a base, a vacuum adsorption worktable, a gantry frame, an engraving head assembly, and an anti-clogging mechanism. When cleaning is required, the drive assembly rotates the limiting shaft, causing the threaded rod to extend or retract via threaded transmission. This pushes the mounting base and dust collection hood to reciprocate on the upper surface of the vacuum adsorption worktable, simultaneously pushing the mounting arm to reciprocate along a translational track. This activates the external negative pressure dust collection system, allowing the dust collection hood to thoroughly suction the upper surface of the vacuum adsorption worktable, sucking in and collecting resin debris clogged in the adsorption holes and scattered on the surface. This technical solution actively removes debris from the vacuum adsorption worktable, restoring the adsorption holes to unobstructed flow, thereby maintaining a uniform distribution of adsorption force, preventing localized warping of the plate, and ensuring consistent micro-dot engraving depth.

To provide a water-based flexographic ink capable of obtaining a printed matter having good storage stability and good leveling property and blocking resistance and a laminate having good laminate strength.SOLUTION: There is provided a water-based flexographic ink comprising a pigment, an aqueous urethane resin and / or an aqueous acrylic urethane resin, water and an organic solvent, wherein the organic solvent includes two or more alcohol solvents (A) having different boiling points, the alcohol solvents (A) includes an alcohol solvent (a1) which is a glycol monoalkyl ether having a boiling point of 115 to 180°C and an alcohol solvent (a2) having a boiling point lower than the boiling point of the alcohol solvent (a1) and the water-based flexographic ink contains 0.5 to 9.5 mass% of the alcohol solvent (a1) and 0.5 to 8.5 mass% of the alcohol solvent (a2) in the total mass of the water-based flexographic ink and has a surface tension of 28 to 35 mN / m.SELECTED DRAWING: None

The invention discloses a preparation method of coated gift packaging paper. The preparation method comprises the following operation steps: S1, pulping: respectively pulping bleached sulfate softwood chemical pulp, bleached sulfate broadleaf wood chemical pulp and alkaline hydrogen peroxide bleached poplar chemimechanical pulp, and mixing to form mixed pulp; s2, auxiliary material adding, wet paper sheet forming and pre-drying; s3, coating and sizing are conducted, specifically, the front face and the back face of the paper sheet are coated with a coating respectively, and the coating comprises coating-grade light calcium carbonate, coating-grade talcum powder, a dispersing agent, sodium hydroxide, modified acrylic copolymer emulsion, polyvinyl acetate latex, coating starch, sodium carboxyl cellulose, a lubricating agent and a defoaming agent; s4, carrying out post-drying and carrying out super-soft calendering treatment by adopting eight rollers and seven pressing areas; the invention also provides the coated gift packaging paper prepared by adopting the preparation method, the smoothness of the coated gift packaging paper is greater than 1200s, the roughness of the coated gift packaging paper is less than 1.2 microns, and the coated gift packaging paper completely meets the requirements of the coated gift packaging paper for absorbing and drying gravure or flexographic printing water-based ink.

An object of the present invention is to provide a method for producing printed matter that has excellent plate fogging, impression cylinder staining, edge staining of printed matter, and ink adhesion to substrates. [Solution] A method for producing printed matter by gravure printing or flexographic printing using an aqueous printing ink, comprising: adding a dropping solvent to the aqueous printing ink during printing; and maintaining the liquid temperature of the aqueous printing ink within the range of 30°C to 50°C during printing, wherein the dropping solvent comprises water, an alcohol-based organic solvent, and an amine compound.

A method and apparatus are provided for drying a flexographic plate previously subjected to washing with a water-based or solvent-based liquid. The method involves providing a support member made of a thermo-conductive material, wherein the support member comprises at least a first main surface adapted to allow the support of the plate to be dried. The method involves positioning the plate to be dried on the support element so that a base face of the plate rests on the first main surface. The method further provides the step of heating the support element to a preestablished temperature so that the thermal energy supplied to the support element is transferred by conduction to the plate resting on the support element so as to cause evaporation of residual liquid contained in the plate. The apparatus is provided for carrying out the drying method.

The utility model relates to a flexographic printing machine with double groups of gloss oil machine mechanisms, which comprises an oil storage box, extension tables are arranged on two sides of the oil storage box, a sealing cover is arranged at the top ends of the oil storage box and the extension tables, and a roller support is fixedly arranged at the upper end of the oil storage box. The utility model relates to the technical field of gloss oil mechanisms of flexo printing machines. According to the flexographic printing machine with the two sets of gloss oil machine mechanisms, the rotating rolling shafts rotate, oil in the oil storage box is lifted through the gloss oil conveying belt, the surface of the gloss oil rolling brush is coated with gloss oil when the gloss oil conveying belt makes contact with the gloss oil rolling brush, and the three transmission rolling shafts are arranged in the shape like the Chinese character'pin '; the outer peripheral wall of the gloss oil conveying belt can be infinitely close to the bottom end wall of the oil storage box, so that the gloss oil conveying belt can effectively convey gloss oil upwards, the surface of the gloss oil rolling brush can be in full contact with the gloss oil all the time, and the uniformity of gloss oil coating is improved.

A treatment method for a waste aqueous development liquid generated through development of a flexographic printing original plate by using an aqueous development liquid, the method including: a first filtration step of filtering the waste aqueous development liquid at 5° C. or more and 48° C. or less through a microfiltration membrane to give a recovered liquid and a concentrated waste liquid; and a reuse step of reusing the recovered liquid for development of a flexographic printing original plate.

To provide a paperboard with excellent flexographic printing quality.SOLUTION: A paperboard includes a coating layer on at least one surface of a paper substrate, wherein the coating layer contains an epichlorohydrin compound.SELECTED DRAWING: None

A processing system for processing flexographic printing plates may include a processing path for processing flexographic printing plates. A hollow tube may be positioned to extend across the processing path. A pressurized processing liquid supply system is provided. A plurality of pressure compensation emitters are coupled to the hollow tube. Each pressure compensation emitter may include a casing having a fluid flow path fluidly coupled to the hollow tube and having an outlet. Each emitter may also include a resilient planar member positioned within the casing to form at least one resilient surface of the fluid flow path. Each pressure compensation emitter is configured to control a flow rate of pressurized processing liquid to generate droplets of processing liquid from the outlet. The resilient planar member may be positioned to provide a variable outlet cross-sectional shape at the outlet in response to pressure within the casing.

The invention discloses a valve terminal type centralized ink supply system which comprises a box body, a double-valve terminal is fixedly installed in the box body, and the double-valve terminal is externally communicated with an ink return pump and an ink inlet pump; the double-valve terminal structurally comprises a large valve terminal and a small valve terminal which are connected into a whole, the outer end faces of the large valve terminal and the small valve terminal are respectively provided with corresponding control interfaces and liquid inlets and outlets, each control interface is respectively provided with an angle seat valve, and each liquid inlet and outlet is correspondingly communicated with an ink or cleaning liquid inlet and outlet pipeline; each angle seat valve, the ink inlet pump and the ink return pump are correspondingly provided with a two-position three-way electromagnetic valve, the ink inlet pump is further provided with a speed regulating valve, and the ink return pump is further provided with another speed regulating valve. The invention belongs to the technical field of flexographic printing equipment, the assembly efficiency is greatly improved, the later maintenance is clearer, the utilization rate of ink and a cleaning agent is greatly improved, and the printing quality is more stable.

A processing apparatus for processing a photosensitive flexographic printing plate precursor is disclosed which includes a novel and improved filter system and allows continuous processing by re-using used processing solution without requiring frequent user intervention to replace clogged filter material. The filter system includes three tanks in a cascade configuration whereby the solution in the third tank can suitably be used for rinsing the processed plate so that no separate rinsing station is required.

The invention relates to the technical field of printing auxiliary tools, in particular to an auxiliary pasting device and method for a cylinder printing plate for flexographic printing. The auxiliary pasting device comprises a rack, a display amplification unit is installed on the rack, and a printing cylinder is rotationally connected to the rack and located in a camera shooting area of the display amplification unit; the adjusting frame is connected with the machine frame, a containing frame is rotationally connected to the adjusting frame, the rotating axis of the containing frame is parallel to the rotating axis of the printing cylinder, and a positioning area used for containing a flexible printing plate is formed on one side of the containing frame; the adjusting and aligning unit is used for enabling the placing frame to move in the axial direction of the printing cylinder, the adjusting and aligning unit is connected with the rack, and the adjusting and aligning unit is connected with the placing frame; the device has the effects that the pasting efficiency and pasting alignment precision of the flexible printing plate are improved, the influence of human factors such as the proficiency of operators on the pasting precision of the flexible printing plate is reduced, and the later cigarette case printing quality is improved.

1. Name of the designed product: printed rubber sleeve (full-plate without carving type). 2. Use of the designed product: used for flexographic printing and printing. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

1. Name of the designed product: Flexographic printing press (LF series). 2. Use of the designed product: for printing. 3. Design points of the designed product: in shape. 4. Picture or photograph best indicating the design points: perspective view.

To provide an expanded color gamut water-based printing (preferably, flexographic printing) ink set which enables printing of a printed matter having a low migration property even after exposure to temperatures in excess of 150°C.SOLUTION: There is provided a method for providing a packaged food, which comprises: printing on a substrate with a water-based printing ink composition; providing a printed substrate by drying the ink composition; and packaging a food with the printed substrate, wherein the method does not include printing or coating any layer on the dried ink composition and the ink composition comprises water and a polyester resin. Further, there is provided a use of a water-based printing ink for printing on a substrate, wherein the printed substrate has less than 50 ppb of migration species when heated to a temperature in excess of 150°C and a water-based ink composition comprises water and a polyester resin.SELECTED DRAWING: None

A method for inline offset flexographic printing of tactile ink involves using an offset color printing unit to print a base color on the surface of a paper packaging box, followed by two or more flexographic printing steps to print the tactile ink onto the paper packaging box, resulting in a tactile ink thickness of ≥6μm on the packaging box surface. After finishing the paper packaging box using this method, the surface exhibits a matte gloss effect, and a subtle velvety feel can be detected by touch, enhancing the packaging box's aesthetics. Compared to single-pass printing of tactile ink, this invention uses a two-step flexographic printing process, improving the leveling effect of the tactile ink on the paper packaging box surface, increasing the ink thickness, and effectively reducing the accumulation of tactile ink during printing due to increased ink thickness and viscosity. Inline production results in less product deformation, smoother subsequent processes, and improved efficiency and product yield in later stages.

The utility model discloses a quick replacement device for an ink roller of a six-color flexo printing machine, and belongs to the technical field of printing machinery. The quick replacing device for the ink roller of the six-color flexographic printing machine comprises a bottom plate, universal wheels are installed at the four corners of the bottom end of the bottom plate, a stand column is installed on one side of the top end of the bottom plate, a top frame is installed at the top end of the stand column, a height adjusting mechanism is connected to the bottom end of the top frame and comprises a one-way threaded rod, and the top end of the one-way threaded rod is rotationally connected with the bottom end of the top frame; the bottom end of the one-way threaded rod is rotationally connected with a holding seat, the bottom end of the holding seat is rotationally connected with the top end of the bottom plate, the outer side of the one-way threaded rod is sleeved with a lifting arm, a frame is installed on the side, away from the one-way threaded rod, of the bottom end of the lifting arm, and clamping seats are arranged on the two sides of the bottom end of the frame; the height of the ink roller can be effectively and rapidly adjusted, the ink roller can be conveniently and rapidly positioned and installed, and the ink roller adjusting device has high practical value.

The utility model discloses an anilox roller transmission device of a flexographic printing machine, which relates to the technical field of conveying structures and comprises an anilox roller mechanism, the anilox roller mechanism comprises an anilox roller body, anilox roller shafts are arranged at two ends of the anilox roller body, gear mechanisms are arranged on the outer walls of the anilox roller shafts, and the anilox roller shafts are meshed with the gear mechanisms. Four key grooves are formed in the outer wall, located at the position of the gear mechanism, of the anilox roller shaft, the gear mechanism comprises two half gears, the whole gear is divided into the two half gears, and the two half gears can be directly arranged on the outer wall of the anilox roller shaft in a sleeving mode. According to the connecting mode, the gear mechanism and the anilox roller shaft are convenient to disassemble and assemble, meanwhile, the connecting mode has the beneficial effects that the structure is simple, the manufacturing cost is low, other equipment does not need to be disassembled during replacement, and the replacement time is saved.

The invention relates to a rotary printing press (1), in particular a gravure printing press or a flexographic printing press, for printing on material webs (2), comprising at least one inking unit (4) for the exchangeable mounting of a screen roller (6), further comprising an impression cylinder (8) assigned to the inking unit (4), and further comprising a control unit (10) for carrying out a printing job for printing on the material web (2), wherein the control unit (10) can be connected / is connected to at least one data memory (12), wherein individual specific data values of available mountable screen rollers (6) can be stored in the data memory (12). The invention is characterised by at least one measuring and / or evaluation device (14) for detecting at least one individual specific data value of at least one screen roller (6) used in the printing job during the printing job, wherein the control unit (10) is designed in such a way that, during or upon completion of the printing job, the detected individual specific data value of said screen roller (6) can be stored in the data memory (12) and / or individual specific data values already stored in the data memory (12) can be updated and / or supplemented for the screen roller (6).