15results about "Paper testing" patented technology

This application discloses a method, apparatus, equipment, and storage medium for calculating the moisture content of electrical insulation paperboard, relating to the field of transformer technology. The method for calculating the moisture content of electrical insulation paperboard includes: collecting data on the exposure time and environment of the target transformer body; calculating the moisture absorption rate of the electrical insulation paperboard of the target transformer body based on the exposure time and environmental data combined with a moisture absorption rate calculation model; calculating the stage saturated moisture content of the electrical insulation paperboard of the target transformer body based on the exposure time and environmental data combined with a stage saturated moisture content calculation model; and calculating the moisture content of the electrical insulation paperboard based on the exposure time, moisture absorption rate, and stage saturated moisture content. This method achieves accurate calculation of the moisture content of electrical insulation paperboard based on environmental information and a constructed calculation model without damaging the paperboard, improving the efficiency of moisture content calculation while ensuring real-time performance.

The present disclosure provides a component detection method and device, a storage medium and a program product. The component detection method comprises: collecting detection samples at a predetermined frequency in the production process of a tobacco-containing source functional paper base, wherein the detection samples comprise tobacco pulp samples and paper base samples; detecting the total nitrogen content of the tobacco pulp samples and the total nitrogen content of the paper base samples; determining the component content according to the total nitrogen content of the tobacco pulp samples and the total nitrogen content of the paper base samples, wherein the component content comprises the tobacco pulp content and the commodity pulp content.

The present invention relates to a method of determining the quantitative ratio of melamine-formaldehyde resin and urea-formaldehyde resin in at least one paper ply impregnated with a mixture of these resins, wherein the impregnation is conducted in a system for impregnation of at least one paper ply running through the system, comprising the steps of impregnating multiple paper plies with resin mixtures each with different quantitatively defined ratios of melamine-formaldehyde resin and urea-formaldehyde resin as reference samples; recording at least one NIR spectrum of each of the reference samples using at least one NIR measurement head in a wavelength range between 500 nm and 2500 nm, preferably between 700 nm and 2000 nm, especially preferably between 900 nm and 1700 nm, and particularly advantageously between 1450 nm and 1550 nm; assigning the different quantitative ratios of melamine-formaldehyde resin and urea-formaldehyde resin in the reference samples to the recorded NIR spectra of the reference samples mentioned; and creating a calibration model for the correlation between the spectral data of the NIR spectra and the corresponding quantitative ratios of melamine-formaldehyde resin and urea-formaldehyde resin of the reference samples by means of a multivariate data analysis; impregnating at least one paper ply with a resin mixture of melamine-formaldehyde resin and urea-formaldehyde resin; recording at least one NIR spectrum of the impregnated paper ply using the at least one NIR measurement head in a wavelength range between 500 nm and 2500 nm, preferably between 700 nm and 2000 nm, especially preferably between 900 nm and 1700 nm and particularly advantageously between 1450 nm and 1550 nm; and determining the quantitative ratio of melamine-formaldehyde resin and urea-formaldehyde resin in the impregnated paper ply by comparing the NIR spectrum recorded for the impregnated paper ply with the calibration model created.

The present application relates to the device for testing the cleaning effect of sanitary products wiping the anal region. The bionic model module comprises at least two bionic hip models arranged on the top of the box body, the bionic hip models are made of transparent and elastic material, the bionic hip models comprise simulated anal regions, a catheter is embedded in each bionic hip model, and the outlet of the catheter is located at the simulated anal region of the corresponding bionic hip model. The delivery module comprises a simulated dirt container, a delivery pipe, a peristaltic pump assembly and a distribution module, the inlet of the delivery pipe is in communication with the simulated dirt container, the outlet of the delivery pipe is connected with the distribution module, the outlet of the distribution module is connected with the at least two catheters, the peristaltic pump assembly is arranged on the delivery pipe to drive the quantitative delivery of the simulated dirt, and the transillumination enhancement module is used for enhancing the transillumination or reflection display effect of the corresponding simulated anal region of the bionic hip model, so as to improve the visibility of the simulated dirt residue.

The utility model relates to the technical fields of special paper detection, especially to a special paper detection device, which is provided with a roller pressing restraint mechanism with damping rotation arranged outside, can keep the paper tension in the detection box and improve the reliability, comprising a paper detection box, further comprising a connecting frame, a rotary damper, a lower pressing roller, a guide sleeve, a sliding rod, a pull tab, a connecting spring, a top frame and an upper pressing roller, the input side of the paper detection box is connected with the outside of the front side of the connecting frame, the middle inner side of the top of the connecting frame is connected with the outside of the guide sleeve, the inner wall of the guide sleeve is vertically slidingly connected with the outer wall of the sliding rod, the top end of the sliding rod is connected with the middle part of the bottom side of the pull tab, the connecting spring is connected between the outside of the bottom of the pull tab and the outside of the guide sleeve on the top end of the connecting frame, the bottom side of the sliding rod is connected with the middle part of the top side of the top frame, the upper pressing roller is rotatably arranged in the top frame, the lower pressing roller is rotatably arranged in the connecting frame through the rotary damper, the upper pressing roller corresponds to the lower pressing roller horizontally, and the front side of the paper detection box is provided with a winding mechanism.

A method of producing a microfibrillated cellulose, MFC, film from an MFC dispersion, comprises subjecting a wet MFC film on a support to at least one drying step to form a dry MFC film (F'), measuring at least one parameter indicative of the dry solids content in the wet MFC film (F) and / or in the dry MFC film (F') at at least two data points which are laterally spaced across at least a width of the MFC film (F, F'), and varying drying conditions of at least one of said at least one drying step across a width of the wet MFC film (F, F') in response to said parameter. There is also disclosed a device for producing MFC film, use of such device and an MFC film.

This invention relates to the field of polymerization degree detection technology, and discloses a method and system for detecting the polymerization degree of insulating paper in transformers. The method includes acquiring viscosity data of insulating paper samples and corresponding solvent type, temperature change rate, and concentration difference; constructing a multi-dimensional feature vector and merging it into an original dataset; grouping and statistically analyzing by solvent, temperature, and concentration to obtain a set of correction factors and performing three corrections sequentially: when the temperature change exceeds a threshold, the viscosity is corrected using a temperature correction factor; when the solvent influence exceeds a threshold, the viscosity is corrected using a solvent correction factor; when the concentration difference from the standard value exceeds a threshold, the viscosity is adjusted using a concentration correction factor. Finally, a final viscosity set after multi-factor correction is obtained, and the polymerization degree value is obtained through the conversion relationship between viscosity and polymerization degree. This method can accurately establish a correction and calculation mechanism reflecting the true aging state of insulating paper under complex and variable experimental conditions, achieving high-precision detection of the polymerization degree.

The invention relates to a friction measuring system (10) for measurement of friction of a fiber web (W) in connection with an unwinder of a slitter-winder, which unwinder is configured to unwound the fiber web (W), which fiber web (W) is configured to be run forward over at least one roll (12), which roll (12) is configured to support the run of the fiber web (W). The friction measuring system (10) comprises a friction measuring device (20), which friction measuring device (20) comprises a sample holding part (27) for holding a sample (15) cut from the fiber web (W). The friction measuring system (10) further comprises movable support elements (30-33) to support and transfer the friction measuring device (20), that the friction measuring device (20) is configured to press the sample (15) against surface of the fiber web (W) to measure the friction between the surface of the sample (15) and the surface of the fiber web (W) and a measurement movement between surfaces of the sample (15) and the fiber web (W) is provided by moving the sample (15) by the friction measuring device (20) and / or by moving the fiber web (W).

The utility model discloses a kind of paper pH automatic measuring instrument, it is related to pH measurement equipment technical field, including mainframe pedestal, heating container component, refrigeration container component, paper shredder, paper outlet guide frame, liquid extraction component and pH detection component.In the utility model, the paper to be measured is put into paper shredder to carry out paper shredding treatment, heating container component carries out heating treatment to paper shredding and water liquid, forms hot water extraction of the paper to be measured;Liquid extraction component extracts and conveys paper water extraction in heating container component into refrigeration container component, then immediately carries out pH detection to hot water extraction;Refrigeration container component carries out refrigeration cooling treatment to hot water extraction, obtains cold water extraction of the paper to be measured, now carries out pH detection to cold water extraction of the paper to be measured;The utility model can be disposable to realize the paper shredding of the paper to be measured, heating water extraction, pH detection of hot water extraction, refrigeration cooling and cold water extraction pH detection work.

The utility model relates to the technical field of coating white surface kraft paper production, provide a kind of coating white surface kraft paper production equipment, including water pool, further include: support assembly, support assembly includes crosspiece and two support plates, crosspiece is set in the top of water pool, two support plates are respectively fixedly connected with the both ends of crosspiece;Lifting assembly, lifting assembly includes stand, top plate, movable plate, lead screw and motor, stand is fixedly installed on crosspiece, top plate is fixedly installed on the top of stand, movable plate is set on stand, and with stand sliding connection, lead screw is threadedly connected with movable plate, the both ends of lead screw are respectively connected with top plate and crosspiece rotation, motor is used to control lead screw rotation;Fixed plate, fixed plate is fixedly installed on the bottom of crosspiece;Detection component, at least two detection components are provided on movable plate, at least one detection component is provided on fixed plate, and detection component includes detection cylinder and filter screen;Water adding component, water adding component is used to add water to all detection cylinders simultaneously.

The present invention relates to an arrangement for determining the permeability of a sample, said arrangement comprising a source of fluid medium arranged such that at least a fraction of said medium can be brought into contact with a first surface of said sample to be tested; means for measuring the electrical properties at a second surface of said sample, wherein the second surface is opposite said first surface of said sample; and a controller for recording said electrical properties, and for determining the transmission rate of the fluid medium through the sample based on the recorded electrical properties.

This utility model belongs to the field of adhesive coating detection technology and discloses a device for detecting adhesive coating on spliced ​​paper. The device includes a housing, a profilometer, and an adjustment assembly. The housing is fixedly connected to external components and has an installation space to accommodate the profilometer. The profilometer has a detection section for detecting the adhesive coating on the spliced ​​paper. A detection port is provided at the bottom of the housing, communicating with the installation space. The detection section is positioned opposite to the detection port. The adjustment assembly is located between the inner wall of the installation space and the profilometer, allowing the position of the detection section relative to the housing to be adjustable, thereby adjusting the detection angle of the detection section. By adjusting the detection angle to be perpendicular or parallel to the limiting direction of the spliced ​​paper, the measurement accuracy of the profilometer is ensured.

The invention relates to a method for analyzing a coating (1a) on a coated material web (1) with respect to moisture contained therein, wherein: a) a measuring chamber (3) is filled with measuring chamber air (AI) which has a predetermined relative humidity (HU) and a predetermined temperature (TP) at the beginning of a time interval (IN) that begins after the measuring chamber (3) is filled; b) the coated material web (1) is transported through the filled measuring chamber (3) and during the transport of the material web (1) one or more parameters of the measuring chamber air (AI) including the relative humidity (HU') of the measuring chamber air (AI) are measured at least at the end of the time interval (IN);c) from the change in the relative humidity of the measuring chamber air (AI) within the time interval (IN) using the specified temperature (TP) of the measuring chamber air (AI) and / or using a temperature (TP') of the measuring chamber air (AI) measured in step b) at the end of the time interval (IN), a moisture information (HI) is determined which describes the water content in the coating (1a) of the coated material web (1).

The invention relates to a method for analyzing a coating (1a) on a coated material web (1) with respect to moisture contained therein, wherein: a) a measuring chamber (3) is filled with measuring chamber air (AI), which has a predetermined relative humidity (HU) and a predetermined temperature (TP) at the start of a time interval (IN) which begins after the filling of the measuring chamber (3); b) the coated material web (1) is transported through the filled measuring chamber (3) and, during the transport of the material web (1), one or more parameters of the measuring chamber air (AI) comprising the relative humidity (HU') of the measuring chamber air (AI) are measured at least at the end of the time interval (IN); c) moisture information (HI) describing the water content in the coating (1a) of the coated material web (1) is determined from the change in the relative humidity of the measuring chamber air (AI) within the time interval (IN) with the aid of the predetermined temperature (TP) of the measuring chamber air (AI) and / or with the aid of a temperature (TP'), measured in step b), of the measuring chamber air (AI) at the end of the time interval (IN).