10927 results about "Paper sheet" patented technology

The invention relates to the field of matt films, in particular to a BOPP matt film suitable for a direct coating process and a preparation method of the BOPP matt film. The BOPP matt film suitable for the direct coating process comprises an upper surface layer, a middle core layer and a lower surface layer which are sequentially arranged, the upper surface layer is an extinction layer and comprises polypropylene random copolymer, 40-51 wt% of high-density polyethylene, 2-3 wt% of n-alkyl chain modified hyperbranched polyester and 5-8 wt% of maleic anhydride-styrene melt grafted polypropylene random copolymer; the middle core layer comprises homo-polypropylene; and the lower surface layer comprises homo-polypropylene. According to the matt film, the roughness of the matt layer can be improved by optimizing the components of the matt layer, the problem of whitening'hard spots' on the surface of the matt film in a direct coating process is solved, and then the quality of a coated matt film product is improved, so that the appearance quality of products such as laminated paper, paper boxes and labels which are subsequently laminated is ensured.

The invention discloses an intelligent management method for liquidation receipts based on multi-modal data fusion, and particularly relates to the field of data analysis. Comprising the steps of S1, multispectral data acquisition in a limited illumination environment, S2, cross-modal feature decoupling and recombination, S3, space-time heterograph neural network analysis, S4, multi-scale attention decision fusion, S5, resistance enhancement verification, and S6, incremental management based on knowledge distillation. According to the method, the physical anti-counterfeiting capability is remarkably improved, the paper material, the ink components and the surface structure are deeply analyzed through a multispectral sequence acquisition mechanism, and hidden tampering behaviors such as color fading and chemical altering of the thermo-sensitive paper are accurately identified. Cross-modal deep correlation analysis is achieved in a breakthrough mode, a physical-semantic decoupling technology and a space-time heterogeneous graph network are adopted for modeling, and non-dominant laws such as commodity position offset and tax rate anomaly are effectively captured.

Embodiments of the invention provide a removable marker tip configured for application with an active pen-stylus. The removable marker tip comprises an antenna and an insulator and is designed to be held onto the pen-stylus' writing shaft by a set of crush ribs fitted into a posterior recess on the removable marker tip. The removable marker tip is designed to be a consumable part to improve the paper feeling received by users of the pen-stylus as they draw on the display of a tablet device. The removable marker tip is further designed to be hand-removable by users of the pen-stylus.

The invention discloses a PHA / PVA nano-scale paper-based barrier emulsion as well as a preparation method and application thereof. The water-based emulsion comprises PHA particles with the average particle size ranging from 100 nanometers to 300 nanometers and PVA, the PHA and the PVA are blended according to a specific proportion, and the PVA serves as a main film forming component and a barrier property contribution component and is blended with the PHA to form the nano-emulsion. The preparation method comprises the following steps: mixing PHA particles with an initial average particle size of 1-100 microns with a PVA aqueous solution, and carrying out high-pressure homogenization and other nanocrystallization means to obtain the nano-emulsion. The emulsion can be coated on the surfaces of paper-based materials such as paper and paperboards, and a barrier coating is formed after the emulsion is dried. The obtained emulsion is small in particle size, good in stability and good in leveling property, a uniform and compact barrier film is easily formed on a paper base, the film has excellent water vapor, oxygen and grease barrier performance, and the material is bio-based, biodegradable and environmentally friendly.

An image-forming apparatus includes a housing, a fixing device, a shutter, a link, a circuit board, and a fan. The fixing device includes a heating unit and is configured to thermally fix a toner image to a sheet conveyed in a conveying direction. The shutter is movable relative to the fixing device between a closing position for closing an upstream end of the heating unit in the conveying direction and an opening position for exposing the upstream end of the heating unit. The link is connected to the shutter, and is configured to abut on a cartridge, which is detachably attachable to the housing, to move the shutter between the closing position and the opening position. The circuit board and the fan are spaced apart from each other to provide an airflow path through which air flows. The link is positioned between the circuit board and the fan.

The invention relates to the technical field of packaging, in particular to an intelligent metering method for remnant base paper rolls of a corrugated paper board assembly line. The intelligent metering method for the remnant base paper rolls of the corrugated paper board assembly line comprises steps as follows: a plurality of base paper feeding positions are arranged in the conveying direction of the assembly line at intervals, a base paper feeding frame is arranged in each base paper feeding position, and two base paper feeding rolls located on two sides of each base paper feeding frame are arranged on the base paper feeding frame; each base paper feeding roll is provided with lap recording sensors and incremental encoders, the lap recording sensors are used for monitoring the number of paper feeding laps of base paper clamped on the corresponding base paper feeding roll, the incremental encoders are used for monitoring the length of each lap after the base paper on the base paper feeding roll passes by one lap, and the lap recording sensors and the incremental encoders are connected with a controller. Intelligent metering can be realized, the operation cost of an enterprise is reduced, labor is saved, and the utilization rate of enterprise resources is increased.

Embodiments of the invention provide an active pen-stylus that emulates a paper feeling for users of the active pen-stylus. The active pen-stylus comprises a writing shaft that receives physical forces arising from use of the pen-stylus by a user. The active pen-stylus also includes a force sensor that receives forces from the writing shaft, the force sensor configured to convert received forces into an electronic signal. A writing spring receives forces from the force sensor and reflects back to the user a reactionary force that emulates a paper feeling. The writing spring compresses and undergoes geometric deflection in creating the reactionary force that emulates the paper feeling. The geometric deflection produced by the writing spring arises from deformation of the writing spring by the received forces.

An inflatable bed includes an inflatable body having a top sheet, a bottom sheet, and a lateral confining sheet connected to the top sheet and the bottom sheet. A covering that covers the top sheet includes at least one outer layer and an inner layer connected to the outer layer. The periphery of the outer layer is fixedly or detachably connected to the inflatable body, and the periphery of the outer layer extends to the periphery of the top sheet. The inflatable bed with the covering according the advantages that the overall structure of the covering is simple, and the covering is convenient to manufacture and low in cost. The outer layer of the covering can be conveniently connected to the inflatable body of the inflatable bed in a fixed or detachable manner, so that the covering will not slip during use and meets the need for good comfort.

The invention relates to a method and a machine for producing a fibrous web, preferably a tissue, paper or cardboard web or a nonwoven web, with a low-water raw material preparation of cellulose-containing fibers, preferably virgin pulp as bales and / or recycled fibers, into individual fibers and / or fiber bundles; wherein the individual fibers and / or fiber bundles are formed and solidified in an air stream into a planar fiber layup on a, preferably permeable, forming belt by a dry forming process; and wherein a fluid, preferably water and / or a water-additive mixture, is applied to the, preferably planar, fiber layup and the fibrous web is dried. The invention is characterized in that the total amount of fluid applied is distributed over at least two application steps.

The present invention discloses a PHA / PVA nanoscale paper-based barrier emulsion, and its preparation method and application. The aqueous emulsion comprises PHA particles with an average particle size of 100 nanometers to 300 nanometers and PVA, wherein PHA and PVA are blended in a specific ratio, and PVA is blended with PHA as the main film-forming component and barrier performance contributing component to form the nanoemulsion. The preparation method comprises mixing PHA particles with an initial average particle size of 1 micron to 100 microns with a PVA aqueous solution, and processing the nanoemulsion by nano-processing means such as high-pressure homogenization. The emulsion can be applied to paper-based materials, such as paper and cardboard surfaces, and forms a barrier coating after drying. The emulsion obtained by the present invention has small particle size, good stability, good leveling properties, and is easy to form a uniform and dense barrier film on the paper base. The film has excellent water vapor, oxygen and grease barrier properties, and the material is bio-based, biodegradable, and environmentally friendly.

The invention provides an online detection method and system for paper defects, and the method comprises the steps: obtaining an infrared thermal imaging data sequence of to-be-detected paper under the dynamic thermal excitation effect; generating a temperature response characteristic distribution diagram corresponding to the to-be-detected paper according to the temperature gradient change rate of different coating areas of the to-be-detected paper in the infrared thermal imaging data sequence; the temperature response characteristic distribution diagram is input into a pre-trained machine learning model, thickness distribution data of the to-be-tested paper is output, and the machine learning model is constructed based on a random forest algorithm; based on the thickness distribution data, a paper coating thickness detection result synchronous with the speed of the paper production line is generated, and when the paper coating thickness detection result shows that the paper coating thickness is abnormal, the dynamic thermal excitation parameter adjustment action is triggered, so that the thicknesses of all pattern layer areas of other paper in the paper production line are normal. According to the invention, the precision of online detection of the paper coating thickness and the production regulation and control efficiency are improved.

The invention discloses a double-sided printer, and relates to the technical field of printing equipment. The double-sided printer comprises a first conveying mechanism, a first printing mechanism, a guide mechanism, a second conveying mechanism and a second printing mechanism, the first conveying mechanism is used for conveying paper in the first direction, the paper comprises a first surface and a second surface which are opposite, and the first surface of the paper located on the first conveying mechanism is arranged upwards; the first printing mechanism is used for printing a first surface; the guide mechanism is used for receiving the paper after the first surface is imaged and turning over the paper until the second surface faces upwards; the second conveying mechanism is used for receiving the paper overturned by the guide mechanism and conveying the paper along a second direction opposite to the first direction; the second printing mechanism is used for printing the second surface. The double-sided printer provided by the invention can improve the double-sided printing efficiency and ensure the image quality.

The invention relates to the technical field of papermaking, in particular to a papermaking filler wrapping agent and a preparation method and application thereof. The papermaking filler wrapping agent comprises a cationic polyester polyacrylamide emulsion and a high molecular weight water-soluble polymer. The papermaking filler wrapping agent has the advantages that the papermaking filler wrapping agent is insensitive to shearing action, the retention rate of filler such as calcium carbonate is high, the paper strength is not reduced, and produced paper products are good in batch stability.

The invention provides a micro-fluidic chip for combined detection of C-reactive protein and ferritin and application thereof.The micro-fluidic chip comprises a substrate and a cover plate pressed on the substrate, a micro-channel is defined by the substrate and the cover plate, the left end of the micro-channel is communicated with a buffer solution sample adding hole formed in the cover plate, the right end of the micro-channel is communicated with a waste liquid area, and the left end of the micro-channel is communicated with a buffer solution sample adding hole formed in the cover plate. The waste liquid area is provided with a movable water-absorbing paper sheet, the microchannel is sequentially provided with a marking area, a detection area and a sample adding area from left to right, the marking area is provided with a marked anti-human CRP antibody, a marked anti-human SF antibody, a marked second antibody and a marked antigen, the first detection site is provided with an anti-human CRP antibody, and the second detection site is provided with an anti-human SF antibody. The first reference point is provided with a first antibody which reacts with the labeled second antibody, the second detection site is provided with an anti-human SF antibody, and the second reference point is provided with an antibody which reacts with the labeled antigen. The detection process of C-reactive protein and ferritin can be simplified, and the detection time is shortened.

The invention discloses a biomass-based reinforcing agent for paper and application of the biomass-based reinforcing agent. The reinforcing agent comprises a biomass-based material, the biomass-based material comprises a micron-sized structure and a nano-sized structure distributed on the micron-sized structure. The reinforcing agent prepared by the invention has abundant nanostructures, is beneficial to physical crosslinking such as entanglement and bridging of fibers in paper pulp, and improves the wet strength of paper; the preparation of the reinforcing agent is a simple physical process, and a complex synthesis chemical process for synthesizing a polymer in a traditional organic reinforcing agent is avoided; the reinforcing agent is prepared by a dissolution regeneration method, so that the energy consumption is low, the solvent can be recycled and reused, no chemicals are consumed, and the reinforcing agent is environment-friendly; the reinforcing agent prepared by the invention can achieve a satisfactory wet strength effect at a lower content.

The invention relates to the technical field of touch control, and discloses a composite material, a touch control pen point, a touch control pen point assembly, a touch control pen and a forming method. The composite material at least comprises a mixture of fibers and thermoplastic resin, the fibers and the thermoplastic resin are mutually bonded to jointly form a first porous structure, a second porous structure is formed in the fibers, and the first porous structure and the second porous structure have rebound resilience. According to the composite material, the writing amplitude can be effectively improved, so that sand sound and granular sensation are generated in the writing process, and then a user can feel the vivid texture similar to that of writing on paper.

The invention relates to a paper surface defect detection method and system based on multi-modal data fusion. The method mainly comprises the following steps: collecting data of to-be-detected paper at the same time by using a laser radar and an image acquisition device; preprocessing the to-be-detected paper data acquired by the laser radar, and performing multi-modal fusion on the preprocessed to-be-detected paper data and the to-be-detected paper data acquired by the image acquisition equipment; collecting paper surface defect data and data labels, and training the defect model by adopting an improved YOLOv7 algorithm in combination with a double-layer template algorithm to obtain a paper surface defect model; the target paper is detected and recognized, and defective paper is removed; and visual interface display: visually displaying the detection and identification result of the target paper. The image processing and deep learning technologies are introduced, the paper surface defect detection method and system are efficient and reliable, the limitation of a traditional manual detection method is overcome, and the quality and production efficiency of printed matter are improved.

The invention relates to a method for detecting pyridine in air, a test paper sheet is placed in an air environment to be detected, the color change of the test paper sheet is observed, the pyridine concentration is qualitatively judged or quantitatively judged according to the color change of the test paper sheet, and the test paper sheet is made of a filter paper sheet and a zinc-based organic-inorganic hybrid halide material. According to the method, qualitative or semi-quantitative judgment of the pyridine concentration in the air can be performed by adopting a test paper sheet and a color card or a linear correlation model standard curve graph, so that whether the pyridine content in the air exceeds the standard or not or the exceeding amplitude can be monitored, and the method has the advantages of convenience in operation and more convenience in detection.

The invention relates to the technical field of papermaking, and particularly provides high-strength tipping base paper for cigarettes and a preparation process of the high-strength tipping base paper. The tipping paper base paper for the cigarettes comprises a fiber raw material; functionalizing the nano cellulose; a cellulase; a dry strength agent; a wet strength agent; and a sizing agent. Nano cellulose is functionalized and a synergistic stepped enhancement mechanism is constructed, so that the synergistic breakthrough of the high-strength raw tipping paper for cigarettes in the aspects of strength, wet strength and air permeability is realized; after the functionalized nanocellulose is subjected to carboxylation treatment, the hydrogen bond and electrostatic adsorption between the functionalized nanocellulose and the fiber are enhanced, and the bonding strength in a dry state and a wet state is remarkably improved; meanwhile, the wet strength agent is added in stages, and the adsorption sequence of the dry strength agent is optimized, so that the reinforcing agent constructs a stable three-dimensional network framework in the paper sheet, and the end breaking risk under high-speed winding is effectively reduced.

The invention relates to the technical field of printing and typesetting, and provides a method and system for creating a printing template through a user-defined report. Template elements and typesetting instructions input by a user are received through a graphical interface; constructing an API (Application Program Interface) port in which the template element is dynamically associated with the heterogeneous data source; configuring a programmable logic judgment mechanism at an API port, and determining medium characteristics corresponding to the template elements; wherein the programmable logic judgment mechanism is used for determining a display / hiding state and a style parameter of a template element based on a preset compilable rule; according to the medium characteristics and the typesetting instruction, a paging strategy is determined, the element spacing and the typesetting proportion are dynamically adjusted, and a target printing template is generated. Through an API port and a programmable logic judgment mechanism, business rules are embedded into template generation logic, intelligent decision of element display / hiding is realized, element spacing is calculated in real time based on medium physical attributes such as paper size and material expansion and contraction rate, and the problem of content truncation during cross-medium printing is solved.

The invention discloses a cationic core-shell PHA nano-emulsion reinforcing agent as well as preparation and application thereof, and belongs to the technical field of papermaking chemicals. The problems that a traditional wet strength agent is poor in environmental protection property and difficult to recycle, and a conventional bio-based material needs high-temperature curing and is high in energy consumption are solved. According to the reinforcing agent, low-MFFT bio-based polyhydroxyalkanoate is used as a core, and a positive ion shell layer with strong positive charges is wrapped outside the core. The method has the core advantages that extra high-temperature curing is not needed, the film can be efficiently formed under the conventional 105 DEG C drying condition, and the energy consumption is remarkably reduced; meanwhile, high dry and wet strength and water resistance are achieved, the treated paper has excellent re-pulping recycling suitability, and the industrial pain point that traditional wet strength paper is difficult to recycle is solved.

A booklet creating apparatus includes a heating-and-pressing unit and a controller. The heating-and-pressing unit heats and presses adhesive layer in a state in which plural sheets, with the adhesive layer formed thereon, are stacked. The controller performs control in such a way as to make a predetermined temperature and / or pressure lower when heating and pressing sheets of minimum size than when heating and pressing sheets of maximum size.

The invention relates to the technical field of artificial intelligence, in particular to a digital printer control system based on artificial intelligence and a control method thereof. The system comprises a data collection simulation unit used for collecting historical printing data, generating ink diffusion simulation data and actual ink diffusion images under different conditions, and establishing a defect database at the same time; the prediction model building unit is used for building a space-time prediction model of ink diffusion, training the space-time prediction model by using ink diffusion simulation data, and finally generating a total loss function; and the feedback optimization unit is used for monitoring the change trend of the total loss function in real time. According to the digital printing machine control system based on artificial intelligence and the control method thereof, the prediction precision and the control effect of printing quality can be improved, fine ink diffusion differences caused by paper adsorbability changes can be effectively captured, and therefore accurate prediction of various defects possibly occurring in the printing process is achieved; the printing efficiency and the product quality are improved.

The invention discloses a polyhydroxyalkanoate-containing multi-component water-based ink binder system, a water-based ink composition and a preparation method and application thereof, and belongs to the technical field of environment-friendly printing materials and water-based ink. According to the invention, a microscopic two-phase or core-shell structure taking the second film-forming resin as a continuous phase and polyhydroxyalkanoate as a dispersed and enriched phase is constructed. Compared with the prior art, a printing layer can be endowed with excellent anti-blocking property, smooth touch feeling and barrier property under an extremely thin dry film only by using an extremely small amount of bio-based components, and meanwhile, excellent adhesive force and abrasion resistance are ensured. In addition, the water-based ink composition also shows excellent household compost and industrial compost degradation performance. The system not only greatly reduces the cost, but also has excellent paper repulping and deinking characteristics, and provides a high-performance solution for environment-friendly printing.

A sheet supply device that supplies a sheet from a roll, includes: a first roll support portion which rotatably supports the roll on one end side in a width direction of the roll; a second roll support portion which rotatably supports the roll on the other end side of the roll by opposing the first roll support portion; and a guide portion which extends in the width direction and movably supports the second roll support portion in the width direction; wherein below a first space in which the roll between the first roll support portion and the second roll support portion is installed, a second space into which a cart which transports the roll enters is formed.

The invention discloses environment-friendly high-barrier packaging paper and a preparation method thereof, and belongs to the technical field of paper product manufacturing. The method comprises the following steps: dispersing bleached sulfate softwood pulp in an aqueous solution of TEMPO and NaBr, adding a NaClO solution, adjusting the pH value, carrying out a reaction, washing the product obtained by the reaction, and carrying out high-pressure homogenization to obtain TEMPO oxidized nanocellulose (TOCNF); mixing the bleached sulfate softwood chemical pulp, hardwood pulp and viscose fibers, pulping, papermaking and the like to obtain original paper; then, TOCNF and waterborne epoxy modified acrylic emulsion are mixed, and a mixed coating is prepared; and finally, coating the surface of original paper with the coating according to a certain mass ratio, and carrying out hot-pressing curing to obtain the environment-friendly high-barrier packaging paper. The packaging paper is excellent in mechanical property, high in barrier property, good in surface uniformity and printing property, environment-friendly and degradable in raw materials, simple to prepare and low in cost.

The utility model provides an intelligent operating system of paper deacidification equipment, which relates to the technical field of paper deacidification and comprises a paper preparation part, a paper storage part and a paper deacidification part, the deacidification part is used for supplying deacidification liquid through a deacidification liquid processing device, a constant-pressure quantitative module is used for controlling the dosage and the pressure intensity of the deacidification liquid, a spray head is fixed on a planar motion module to spray the deacidification liquid to the paper, and a negative-pressure base is used for adsorbing the paper; the drying part comprises a heating device and is used for increasing the paper drying speed and improving the drying efficiency; the carrying part comprises a mechanical arm, a paper support clamp and a suction cup and is used for transferring the paper support and the paper; the paper preparation part, the deacidification part and the drying part are arranged around the carrying part, and the working area is located within the movement range of the mechanical arm so that reuse of the mechanical arm can be achieved. According to the utility model, high-efficiency and high-quality deacidification can be realized, the integrated operation of paper taking, deacidification and paper conveying is realized by the same mechanical arm, the working efficiency is improved, and the mechanical damage to paper is reduced.

A supporting program for a printer supports multiple sheet sizes. The supporting program, when executed by a controller of an information processing device, causes the information processing device to, in response to receiving a request from a universal printing program, obtain sheet size data representing a sheet size list including a first-type sheet size, and generate document size data including available document sizes including the first-type sheet size and a second-type sheet size. When the universal printing program receives a print instruction from an application program, the supporting program causes the information processing device to determine whether a document size of an image to be printed is included in the first-type sheet size; when the document size is not included in the first-type sheet size, scale the image to fit the first-type sheet size; and cause the printer to print the image to be printed or a scaled image.

The invention relates to the field of food packaging, in particular to food packaging barrier transfer paper with high damage resistance. The food packaging barrier transfer paper comprises a base paper layer 1, and an adhesive layer 2, a composite barrier layer and a composite heat sealing layer from bottom to top. Wherein the composite barrier layer comprises a metal dielectric layer 3, a buffer layer 4, a metal dielectric layer 5, a barrier layer 6 and a transfer layer 7 from bottom to top. And the composite heat-sealing layer comprises a double-layer structure including a heat-sealing layer 8 and an isolating layer 9 from bottom to top. The transfer paper provided by the invention has the characteristics of no plastic, high barrier, heat sealability, degradability and direct food contact, meanwhile, the barrier layer of the food packaging barrier transfer paper has higher damage resistance due to the design of the multi-layer barrier structure and the buffer layer, and the temperature resistance and weather resistance of the paper are improved due to the addition of the isolation layer; the factors are superposed, so that the food packaging barrier transfer paper has stable quality performance.