585 results about "Paper based" patented technology

The invention discloses a double-PHA barrier system for a paper-based container and a paperboard as well as a preparation method and application of the double-PHA barrier system, and belongs to the technical field of paper-based material surface engineering and green packaging. The system sequentially comprises a paper base material, a water-based PHA dispersion hole sealing layer and a PHA extrusion compact layer from inside to outside. According to the invention, the micron-sized PHA dispersoid without cell debris is utilized, so that an efficient hole sealing effect which is difficult to achieve by a high coating amount in a traditional process can be achieved by only needing an extremely low coating amount, and the pinhole defect of an extrusion layer is eliminated from the source. And in cooperation with the modified PHA extrusion layer with the specific crystallinity, the problem of micro-cracking of a single coating during edge rolling forming is cooperatively solved. According to the system, excellent barrier performance is achieved through a thinner bio-based structure, and meanwhile the system has a wide heat sealing window and excellent repulp recycling performance. Compared with the prior art, on the premise that high performance is guaranteed, the consumption amount of packaging materials and the environmental burden are remarkably reduced.

The invention discloses a bio-based PHA oil-resistant and moisture-permeable coating for hamburger paper, coated paper and a preparation method, and belongs to the technical field of bio-based high polymer materials and paper-based food packaging. The coating is a PHA aqueous dispersion, and mainly comprises a semi-crystalline matrix PHA and a low-crystallinity or amorphous toughening PHA. The core of the coating is that after the coating is dried to form a film, a functional gradient structure can be spontaneously formed in the thickness direction of the coating: an interface layer close to a paper base is rich in toughening PHA so as to enhance toughness and adhesive force; and the surface layer of the coating is rich in matrix PHA so as to maximize the oil resistance. By means of the functional gradient structural design, the packaging material integrates oil resistance, moisture permeability and flexibility of the packaging material, has the degradable environment-friendly characteristic and is suitable for packaging high-grease food.

The invention discloses a paper base-PHA double-sided composite soil biodegradable agricultural mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural mulching materials and green high polymer materials. The mulching film comprises a paper base layer and a homologous polyhydroxyalkanoate covering layer arranged on the surface of the paper base layer. Through double-sided synergy of the water-based PHA coating on the soil sticking surface and the thermoplastic PHA extrusion film layer on the windward and rainy surface, and in combination with a'wet-to-heat 'integrated composite process and trace anhydride grafting, super-strong combination of a paper-plastic interface fiber tearing level is realized, and the problem that traditional paper-plastic is easy to layer is solved. Compared with a traditional fluorine-containing product, on the premise that total organic fluorine is not detected, the excellent barrier and moisture conservation performance is achieved with the thinner coating thickness by means of double barriers. The product has excellent mechanical laying adaptability and long-season weather resistance, is fully biodegradable, thoroughly solves the hidden dangers of micro-plastic residues and persistent organic pollutants, and is an ideal green agricultural covering material.

This invention discloses a bio-based PHA oil-blocking and moisture-permeable coating for hamburger paper, the coated paper, and its preparation method, belonging to the fields of bio-based polymer materials and paper-based food packaging technology. The coating is an aqueous dispersion of PHA, mainly comprising semi-crystalline matrix PHA and low-crystallinity or amorphous toughening PHA. Its core feature is that after the coating dries and forms a film, it spontaneously forms a functional gradient structure along the coating thickness direction: the interfacial layer near the paper substrate is rich in toughening PHA to enhance toughness and adhesion; while the surface layer is rich in matrix PHA to maximize oil-blocking performance. Through this functional gradient structure design, this invention balances the oil-blocking, moisture-permeable, and flexible properties of the packaging material, and possesses biodegradable environmental characteristics, making it suitable for high-oil food packaging.

The invention discloses porous chlorine dioxide slow-release preservative paper and a preparation method thereof.The porous chlorine dioxide slow-release preservative paper comprises a paper base, a porous carrier is fixed to the paper base through oxidized starch glue, and sodium chlorite, an activating agent and a stabilizing agent are loaded on the porous carrier; the porous carrier is one of aluminum oxide, titanium oxide, cobalt oxide, zinc oxide, copper oxide, iron oxide, cerium oxide, zirconium oxide, nickel oxide, manganese oxide, praseodymium oxide and lanthanum oxide with a porous structure. The slow release of chlorine dioxide can be stably and effectively realized, the release period of chlorine dioxide is prolonged, and long-acting stable sterilization and disinfection effects are realized.

This invention discloses a positioning method, chip, and robot for a mobile printing robot, comprising: the mobile printing robot starting to work on paper, acquiring an image of the current walking surface through a camera, and then determining a first boundary of the paper based on the acquired image of the current walking surface; the mobile printing robot determining a second boundary of the paper based on the first boundary, and then determining an initial printing position based on the first and second boundaries of the paper. The mobile printing robot can independently acquire the paper boundaries for positioning, without the need for additional positioning tools, making it convenient to use and reducing the overall cost of the machine.

The invention discloses a preparation method and application of a cationized composite paper-based material for filtering nano plastic, and belongs to the technical field of nano cellulose. The preparation method comprises the following steps: preparing cationized lignocellulose nanofibers through DES treatment, dissolving out lignin through DES treatment, fully mixing the lignin with a silane coupling agent KH-560 to obtain silanized lignocellulose nanofibers, and then loading a layer of nano lignocellulose material on the surface of a polyvinylidene fluoride filter membrane by adopting a vacuum suction filtration method, and finally, cross-linking polyethyleneimine to obtain the cationized composite paper-based material. The cationized composite paper-based material prepared by the invention is green and environment-friendly, has excellent hydrophilic, antibacterial and recycling performances, and has broad-spectrum effects on the size, concentration and type of carboxylated nano-plastics in efficient capture. The cationized composite paper-based material has the advantages that the carboxylated polystyrene nano-plastic filtering efficiency reaches 97.56%, the filtering flux reaches 1889.99 L.m <-2 >. H <-1 >. Bar <-1 >, the practical application performance of lignocellulose is further widened, and the cationized composite paper-based material has a good application prospect.

The invention discloses a fluorescent / colorimetric dual-mode paper-based sensor for detecting cadmium ions in rhizoma polygonati as well as a preparation method and application of the fluorescent / colorimetric dual-mode paper-based sensor, and belongs to the technical field of detection of heavy metal residues in food with homology of medicine and food. PEI-UCNPs and PtNPs are loaded on a paper base and are mixed and reacted with Apt-AMNPs (at) TMB, H2O2, a PBS buffer solution and a solution containing Cd < 2 + >. The Aptamer specifically recognizes and captures Cd < 2 + >, so that the Apt-AMNPs (at) TMB is dissociated, and the TMB is released from holes of the AMNPs; the PtNPs on the paper base catalyzes colorless TMB (Tetramethylbenzidine) to generate blue oxide (oxTMB) under the action of H2O2, and the oxTMB can quench up-conversion fluorescence of PEI-UCNPs through fluorescence inner filtration. When the fluorescence / colorimetric dual-mode paper-based sensor is used for detecting the content of cadmium ions in rhizoma polygonati, the fluorescence / colorimetric dual-mode paper-based sensor has the characteristics of simplicity and convenience in operation, low detection cost, rapidness, specificity, sensitivity, portability and the like, and the fluorescence / colorimetric dual-mode paper-based sensor can be applied to on-site detection of the cadmium ions in rhizoma polygonati.

The invention discloses an automatic friction plate pasting device which comprises a clamping mechanism and a conveying mechanism. During implementation, a workpiece is conveyed through the conveying mechanism, then is placed on the feeding temporary storage mechanism and then enters the first surface mounting mechanism, a paper base is adhered to the upper surface of the workpiece, then the workpiece is moved to the turnover mechanism, the turnover mechanism can turn over the workpiece, and then the workpiece is placed on the first surface mounting mechanism. Then the overturned workpiece is moved to the second surface mounting mechanism, the second surface mounting mechanism can attach the paper base to the other surface of the workpiece, the workpiece subjected to surface mounting is moved to the pressing mechanism, the pressing mechanism presses the paper base and the workpiece, the workpiece retreats from the pressing mechanism after pressing, and operation is completed; the clamping and transposition mechanism is used for clamping and placing the workpieces located on the conveying mechanism on the feeding temporary storage mechanism, and the clamping and transposition mechanism is used for sequentially moving the workpieces to the next machining mechanism, so that machining operation of the workpieces is completed.

The utility model discloses an aerosol generating product containing a paper-based tobacco shred ordered aerosol generating substrate. The aerosol generating product comprises outer wrapping paper (1), and the aerosol generating substrate (2), a supporting piece (3), a composite cooling filter piece (4) and an end cavity piece (5) which are positioned in the outer wrapping paper (1), the aerosol generating substrate (2) is orderly arranged paper-based hair tobacco shreds, the paper-based hair tobacco shreds comprise a paper base body (22), functional substance layers (23) are arranged on the two faces of the paper base body (22), and coating layers (24) are arranged on the outer sides of the functional substance layers (23). The surface of the paper base body (22) with the functional material layer (23) is coated, the physical strength of the paper-based tobacco shred can be improved from multiple aspects through the coating layer, and therefore the problems that the filling amount of the paper-based tobacco shred is difficult to control, the paper-based tobacco shred is sticky after absorbing moisture, the stiffness becomes low, and consequently an ordered cigarette core rod becomes soft are solved.

The application discloses porous chlorine dioxide slow-release preservative paper and a preparation method thereof. The paper comprises a paper base, a porous carrier is fixed on the paper base through oxidized starch glue, sodium chlorite, an activator and a stabilizer are loaded on the porous carrier, and the porous carrier is one of porous structures of aluminum oxide, titanium oxide, cobalt oxide, zinc oxide, copper oxide, iron oxide, cerium oxide, zirconium oxide, nickel oxide, manganese oxide, praseodymium oxide and lanthanum oxide. The application can stably and effectively realize slow release of chlorine dioxide, prolong the release period of chlorine dioxide, and realize long-acting and stable sterilization and disinfection.

The invention relates to the technical field of manufacturing of coated paperboards, in particular to frame paper for cigarettes and a preparation process of the frame paper. The problem that the mechanical property and the barrier property cannot be considered at the same time in the prior art is solved. According to the frame paper for the cigarettes, the bleached hardwood pulp and the softwood pulp are compounded, and the calcium carbonate and the nanocellulose crystals are added to prepare the high-uniformity modified paper base; then, polycaprolactone diol, isophorone diisocyanate, dimethylolpropionic acid and 1, 4-butanediol are subjected to a reaction, aminopropyltriethoxysilane is used for blocking, obtained polyurethane emulsion is mixed with gelatinized starch and flaky kaolin step by step, and the composite coating is prepared; coating double surfaces of the modified paper base with the composite coating, and performing step-by-step drying, hot-pressing shaping and curing to obtain the paper. Through multi-stage cooperation of paper base-coating-process, the frame paper has excellent mechanical properties, high printing stability and high barrier property, and is suitable for the field of high-grade cigarette packaging with strict performance requirements.

The application discloses a liner paper fixed-point cutting control method and device and electronic equipment. The method comprises the following steps: when a printing instruction is detected, acquiring parameter information of current cigarette production, and identifying a printing pattern on the liner paper; determining a display center of the printing pattern based on image density of each judgment area in the printing pattern; determining a current cutting distance of the liner paper based on the display center and the parameter information, and controlling a cutting object to perform a cutting action based on the current cutting distance. The application can identify the printing image on the liner paper, and determine the current cutting distance at which the cutting object starts to perform the cutting action by determining the display center of the printing pattern, so that no matter what kind of pattern is, the part of the printing pattern on the liner paper which needs to be mainly displayed is in the central part of the cigarette package after packaging according to the cutting trace, and the automatic production demand of the special cigarette is met.

The application discloses a preparation method of a VP@UiO-66-NH2 / Ag NPs composite SERS chip and application thereof in A beta protein detection, and is characterized by comprising the following steps: synthesizing a VP-graphite paper base by a chemical vapor transport method on a surface of a graphite paper to obtain a VP-graphite paper base; synthesizing a UiO-66-NH2 layer on the surface of the VP-graphite paper base by a solvothermal method to obtain a VP@UiO-66-NH2 composite base; and finally, placing the composite base in an ion sputtering instrument, uniformly sputtering silver nanoparticles on the surface of the composite base, taking out the composite base, and obtaining the VP@UiO-66-NH2 / Ag NPs composite SERS chip, wherein the VP@UiO-66-NH2 / Ag NPs composite SERS chip has the advantages of high sensitivity, good stability and uniformity, controllable preparation process, low cost, application in Alzheimer's disease biomarker detection, high specificity in identification and quantitative analysis of A beta 40 and A beta 42 proteins, fast response and good stability.

The invention discloses a carbon fiber paper-based material and a continuous calendering enhancement method thereof. The preparation method specifically comprises the following steps: repulping, grinding, defibering and sieving meta-aramid pulp, and then mixing with defibered and dispersed short carbon fibers to prepare paper pulp; sequentially carrying out forming, dewatering, squeezing and drying treatment on the slurry to obtain a carbon fiber base paper coiled material; and carrying out continuous calendaring enhancement treatment on the carbon fiber raw paper coiled material to obtain the carbon fiber paper. According to the method, the purpose that the temperature is higher than the glass transition temperature (larger than or equal to 273 DEG C) of the meta-aramid pulp can be achieved, the purpose of conducting hot pressing on the carbon fiber base paper can be achieved, the large-batch and continuous production requirements of the carbon fiber paper can be met, and the production efficiency is greatly improved.

This invention discloses a method, apparatus, equipment, medium, and product for correcting the deviation of tipping paper in a cigarette manufacturing machine, relating to the field of cigarette manufacturing technology. The method includes: determining a first offset information detector for the tipping paper based on the machine's operating data; determining reference contour data for the tipping paper based on the machine's tipping paper baseline and dimensional information; and determining the tipping paper tray to be adjusted and its displacement data based on the offset threshold, the reference contour data, and the measured contour data of the tipping paper; and adjusting the position of the tipping paper tray based on its displacement data to reduce the offset of the tipping paper. This invention adjusts the position of the tipping paper tray based on its offset, thereby changing the paper output range of the tray and correcting the deviation of the tipping paper, thus ensuring cigarette production quality while reducing production costs.

The invention discloses a preparation method of a portable paper-based ratiometric fluorescence sensor APBA-CsPbBr3 at-UiO-66 / Ru, which comprises the following steps: 1, adding lead bromide and cesium bromide into N, N-dimethylformamide, then adding 5-bromovaleric acid and an oleylamine ligand, and stirring; 2, perfluorooctyltriethoxysilane is added, and a precursor solution is obtained; 3, adding zirconium chloride and terephthalic acid into N, N-dimethylformamide to obtain a homogeneous solution; 4, after heating, UiO-66 is obtained; 5, stirring the precursor solution, APBA, UiO-66 and tris (2, 2-dipyridyl) ruthenium chloride hexahydrate to obtain a composite material; and 6, dropwise adding the composite material solution into the filter paper. The APBA modified material is adopted as a recognition unit, the APBA modified material and the paper base construct a fluorescence sensing platform, visual quantitative analysis of oxytetracycline in water is achieved, and the device is convenient to carry, low in detection limit, high in anti-interference performance, easy and convenient to operate and suitable for on-site rapid detection of oxytetracycline.

The application discloses a kind of composite super-hydrophobic paper based on alkyl ketene dimer and metal polyphenol network and preparation method thereof, belong to functional paper-based material field.The method is first immersed in 0.25%~5% alkyl ketene dimer emulsion in cellulose paper, is dried at 90~110 DEG C and is cured 48-96h to prepare modified paper;Then, the pH is 8.0-9.0 of tris-hydroxymethyl aminomethane hydrochloride buffer solution, hydrochloric acid dopamine is dissolved in the buffer solution to form dopamine solution, and the concentration is 0.25~20mg / mL of metal ion solution;Finally, the modified paper is immersed in dopamine solution and metal ion solution in turn, and is dried to obtain composite super-hydrophobic paper.The obtained composite super-hydrophobic paper uses cellulose paper-based material as substrate, and hydrophobic layer and metal polyphenol network layer are formed on the surface in turn, the composite paper has super-hydrophobic performance, water barrier performance and photo-thermal response performance, the preparation process is simple, and is suitable for waterproof packaging, self-cleaning surface, anti-icing and deicing and photo-thermal antibacterial and other fields.

The application discloses a low-cost hepatitis B (HBV) virus nucleic acid rapid detection method based on a functionally modified paper base, and can realize rapid detection of HBV virus nucleic acid.The method comprises the following steps: (1) pre-amplifying HBV virus nucleic acid to obtain Texas red-labeled nucleic acid; (2) capturing and enriching the Texas red-labeled nucleic acid by using a functionally modified paper base; and (3) performing signal detection.The functionally modified paper base is modified with a fusion protein containing a TR512 polypeptide.The protein functionally modified paper base is simple in preparation, fast in nucleic acid detection time and low in detection cost.

The invention discloses difunctional catalysis-adsorption Chinese art paper based on fiber structure modification and application of the difunctional catalysis-adsorption Chinese art paper in baijiu aging, and belongs to the technical field of baijiu production. According to the Xuan paper, raw Xuan paper serves as a base body, a catalytic function layer containing metal ions, an organic acid catalyst and nano bentonite is formed through an impregnation technology, and esterification reaction can be promoted; an adsorption layer containing a modified ZSM-5 molecular sieve or activated carbon fiber is formed on the surface through electrostatic spinning, and C3-C5 aldehydes, sulfides and other impurities can be selectively adsorbed. A micro-aerobic environment is maintained by utilizing a Chinese art paper porous structure, a synergistic effect of catalysis and adsorption is realized, the ageing period of a white spirit ceramic jar can be shortened, the quality of a white spirit body is improved, and the problems of low efficiency and difficulty in flavor regulation and control of a traditional jar sealing mode are solved.

This invention belongs to the field of cigarette packaging testing technology and discloses a bending degree measuring device and method. The bending degree measuring device includes a support structure, an image acquisition structure, and a detection system. The support structure is used to place the label paper, provide illumination to the label paper, and flatten the label paper. The image acquisition structure is located on top of the support structure and is used to acquire original images of the front and back sides of the label paper, as well as an image of the flattened label paper. The detection system is connected to both the support structure and the image acquisition structure. The detection system receives the original images of the front, back, and flattened sides of the label paper acquired by the image acquisition structure and obtains the bending degree of the label paper based on these images. This bending degree measuring device can measure the bending degree of label paper, select label paper with acceptable bending degree for processing, and avoid reduced production efficiency due to poor bending degree.

The utility model provides a cut sticker based on PVC (polyvinyl chloride) materials, which comprises a soft PVC base material, a plurality of detachable sticker sheets arranged on the soft PVC base material, a thin film layer, a pattern layer and a bottom glue arranged at the bottom of the sticker sheets, the thin film layer is attached to the soft PVC base material, the pattern layer covers the thin film layer, the bottom glue is arranged at the bottom of the sticker sheets, and the bottom glue is arranged at the bottom of the sticker sheets. And the three-dimensional sticker can be formed among the sticker sheets through the primer. Based on the cutting paster made of the PVC material, the effect of a traditional acrylic vertical board is achieved through the structure, however, the production cost of the soft PVC base material and the thin film layer is far lower than that of acrylic, the production cost of the PVC base material is relatively simple, batch production is easy to achieve, and therefore the production cost of products is greatly reduced. Meanwhile, based on the material characteristics of the soft PVC, the possibility of product damage can be greatly reduced compared with an acrylic standing board in the transportation process, and then the market competitiveness of the product is improved.

We provide decorative sheets that reproduce the texture of genuine materials while offering superior durability. Furthermore, we offer high-quality decorative materials incorporating such decorative sheets. [Solution] A decorative sheet comprising a paper base layer, a pattern layer provided on one surface of the base layer, a partial pattern layer provided on the surface of the pattern layer and partially covering the pattern layer, and a surface protection layer provided on the surfaces of the pattern layer and the partial pattern layer and covering both surfaces, wherein the surface protection layer has a first protective layer with at least a portion of its surface exposed, the first protective layer does not contain a gloss adjuster, the surface of the first protective layer has an uneven structure, the uneven structure has a load length ratio Rmr(10%) at a cutting level of 10% of 0.4 or more and a root mean square slope Rdq of 0.15 or more and 0.4 or less.

The invention belongs to the technical field of paper production, and discloses dry-wet mixed absorbent paper production equipment which comprises a double-end mechanical arm assembly and a dry-wet mixed absorbent paper assembly, two sets of synchronous opposite-pressure feeding arm assemblies are arranged at one end of the double-end mechanical arm assembly, and two sets of negative-pressure feeding arm assemblies are arranged at the other end of the double-end mechanical arm assembly; a structure used for synchronously adsorbing and synchronously oppositely pressing a mixed paper base material and a dry paper base material is formed on the synchronous oppositely-pressing feeding arm assembly, in the actual use process, the dry paper base material on the second oppositely-pressing suction cup and the mixed paper base material on the first oppositely-pressing suction cup are synchronously oppositely pressed on adhesive layers on the two faces of an isolating membrane base layer, and in this way, the adhesive layers on the two faces of the isolating membrane base layer are synchronously and oppositely pressed. Synchronous gluing and opposite pressing of a dry paper base material and a mixed paper base material are achieved, meanwhile, in the synchronous gluing and opposite pressing process, the top face and the bottom face of the isolation film base layer are both subjected to opposite pressing force, and through the double-face stress, the isolation film base layer cannot be collapsed or wrinkled in the gluing process, and therefore the production quality is guaranteed.

To provide a lid body which is used for a packaging container for food, which includes a paper base material, and which has excellent openability.SOLUTION: A laminated sheet for a lid body is used for the lid body of a packaging container for food, which includes a container body in which an opening is provided and a lid body covering the opening, and includes a paper base material, a coating layer, and a heat seal layer in this order. The ratio of the paper base material occupying the laminated sheet for the lid body is equal to or greater than 50 mass% with respect to the total mass of the laminated sheet for the lid body. In the coating layer, a composite elastic modulus of a cross section is within a range of 400 to 3600 MPa, and a stress relaxation degree is equal to or greater than 0.20.SELECTED DRAWING: Figure 1

The utility model discloses a multi-bin paper-based micro-fluidic chip for visual detection of bacterial drug resistance. The multi-bin paper-based micro-fluidic chip comprises a hydrophilic paper base, the detection mechanism is a hydrophilic channel established on the hydrophilic paper base; the detection mechanism comprises a sample adding bin and an anti-overflow bin, and the appearance of the anti-overflow bin is circular; one end of the anti-overflow channel is communicated with the sample adding bin, and the other end of the anti-overflow channel is communicated with the anti-overflow bin; the appearance of each reaction bin is an isosceles trapezoid; the plurality of reaction bins are uniformly distributed in a fan shape by taking the circle center of the sample adding bin as a central original point; one end of each diffusion channel is communicated with the reaction bin, and the other end of each diffusion channel is communicated with the sample adding bin; wherein the diffusion channels and the reaction bins are arranged in a one-to-one correspondence manner; the hydrophobic barrier structure is a hydrophobic area formed on the hydrophilic paper base through wax spraying printing along the outer edge of the detection mechanism. According to the multi-bin paper-based micro-fluidic chip for visual detection of bacterial drug resistance, provided by the utility model, rapid, high-throughput and low-cost detection of multiple bacterial drug resistance can be realized.

The utility model relates to a friction plate with a riveting structure, which belongs to the technical field of clutch brake structures and comprises a core plate steel sheet, an assembly inner ring is arranged in the center of the core plate steel sheet, reinforcing sheets are arranged on two sides of the core plate steel sheet, paper-based linings bonded with the end face of the core plate steel sheet are arranged on the peripheries of the reinforcing sheets, and the paper-based linings are arranged on the periphery of the core plate steel sheet. An inner gear ring communicated with the assembling inner ring is arranged in the center of the reinforcing piece, a plurality of rivet holes distributed annularly are formed in the reinforcing piece and the core plate steel piece, and rivets for fixedly connecting the reinforcing piece and the core plate steel piece are arranged in the rivet holes. The core plate steel sheet is located in the center of the friction plate and provided with an assembly inner ring, and the reinforcing sheet is provided with an inner gear ring used for being connected with a clutch driven disc. The connection strength of the friction plate and the driven disc is enhanced, and the stability of power transmission is ensured. And by optimizing riveting and heat dissipation structures, the service life and performance of the clutch are improved. Efficient heat dissipation, high-strength connection and long service life of the friction plate are achieved.