1041results about "Textile testing" patented technology

Process and apparatus for determining properties of a traveling material web. The process includes simultaneously illuminating a plurality of measuring points on the material web with electromagnetic radiation, and imaging, through at least one optical device, the plurality of measuring points on one detection surface of at least one detector. The device includes at least one radiation source for illuminating a plurality of measuring points on the material web, at least one detector having a detection surface, and at least one optical device for imaging of the measuring points on the detection surface of the at least one detector.

Devices, systems and methods are provided for producing a collimated light path. Theses devices, systems and methods may be used to determine an optical property of a small volume sample.

A evaluating and testing device of fabric color difference and color fastness is composed of scanner, illuminating system, video camera equipment, image collecting unit and computer for processing and identifying evaluation ¿C test image of fabric color difference and color fastness. The method of evaluating and testing fabric color difference and color fastness is also disclosed.

The invention relates to a combined measuring device for the mechanics index of the cloth and yarm and it use. It includes a step motor and a computer with a stretching force sensor, a signal gathering and program driving control module and a data collection chart, a pair of clamper which can adjust the position and tension set on the movable board1, a double needle pressing machine4; a single fixed pointed keeping needle suspended on the pull sensor5; two touch touching pachometer. The characteristics of the invention lies in that the overall measurment of the weight, bend, stretching, friction, stretch relaxation, compress thickness and shear property of the cloth and yarm can be completed in mobil way at one time, besides, the invention provides a simple mechanism and compact and light and handy structure, adapting to be fitted onto the stretch test instruments of various types of micromechanics measuring sensors.

The invention discloses a comprehensive permeability testing machine for measuring vertical permeability coefficient and horizontal permeability coefficient. The invention comprises a constant-pressure water tank which is communicated with two water supply pipes, wherein, one water supply pipe is communicated with an upper pressure chamber; the top of the upper pressure chamber is provided with a barometer and an air-bleed hole and the side face of the upper pressure chamber is provided with an inflating device; the upper pressure chamber is communicated with a lower pressure chamber through an assembly member; the upper part of the lower pressure chamber is provided with a bubble exhaust hole and the lower part of the lower pressure chamber is communicated with a graduated flask through an exhaust pipe and a metered valve; the other water supply pipe is connected to the left of the assembly member; and the assembly member is communicated with the graduated flask through the exhaust pipe and the metered valve and consists of an impervious membrane, silicon rubber, a V-shaped slot board and a pressurized plastic membrane. The comprehensive permeability testing machine has the advantages that: firstly, the pressurized plastic membrane can quickly, precisely and uniformly transfer normal pressure to a sample, and the impervious membrane can prevent leakage of the sidewall; secondly, water flow is uniformly infiltrated into the V-shaped slot; thirdly, due to arrangement of the silicon rubber, the border effect is reduced; fourthly, the whole machine realizes measurement of the vertical permeability coefficient and the horizontal permeability coefficient, and is precise, simple and clean, highly efficient, practical and convenient to operate.

A method and an apparatus for detecting foreign fibers in a moving textile material, in particular in moving threads, yarns or slivers, include providing a probe for picking up triboelectric signals from the moving textile material and comparing the output of the probe with a reference value to provide a signal representative of detection of a foreign fiber in the textile material. The apparatus may be used in a card, a drawing bench, a ring spinning machine, an air-jet spinning machine, an open-end spinning machine, a chemical spinning machine, a bobbin winding machine a doubling machine, a combing machine, a bobbin frame, a texturing machine or a loom.

The invention provides a profiled fiber computer automatic device and a method thereof. An automatic recognizing device comprises a computer of a recognizing system, a 3D automatic loading table, an optical microscope and a digital camera. The 3D automatic loading table and the computer of the recognizing system are connected by an R232 serial port to enable the computer recognizing system to control the accurate movement of the 3D automatic loading table by corresponding serial port commands to realize the automatic control of the platform. The digital camera is arranged on the optical microscope, and is connected with the computer by data wires, and the automatic control of the computer on image acquisition is realized by DirectShow. The automatic recognizing method comprises the following steps: step 1, an image acquiring fiber specimen is made; step 2, an original image is preprocessed; step 3, the fiber contour is extracted; step 4, images are spliced; step 5, fiber images are separated; step 6, fiber image characteristics are extracted; and step 7, a classifier of a supporting vector machine is used for classified recognition.

The invention provides a fabric analysis system and method based on biaxial mechanical stretch processing. The fabric analysis system comprises a lighting device, an optical observation imaging system, a signal acquisition control system, a fabric image analysis module and a computer and is characterized in that a biaxial mechanical stretching device is used for performing biaxial mechanical stretching on a fabric sample, so that tissue structures of the fabric sample are clear; the lighting device is used for lighting the fabric sample; the optical observation imaging system is used for photographing an image of the fabric sample; the image is input into the computer through the signal acquisition control system; the signal acquisition control system is used for acquiring and controlling the image of the fabric sample and a signal; the fabric image analysis module is used for performing tissue point region identification, tissue type analysis, dyed yarn arrangement analysis, counting of weft and warp density and proportional recovery calculation on the image of the fabric sample to obtain a total fabric analysis result. The fabric analysis system is convenient for measurement and identification of tissue types, yarn colors and weft and warp densities of fabrics comprising complicated fabrics and can improve the automation degree and the precision of fabric analysis.

The invention relates to a self-adapting testing instrument and a testing method for heat-moisture comfort performance of fabric. The testing instrument comprises a testing main body and a testing accessory body, wherein the testing main body comprises a testing head; the testing head sequentially comprises a heating plate, a copper plate, a simulated skin, a simulated skin and a sample clamp clamped with a sample bottom to top; a temperature and humidity sensor is arranged between the sample and the simulated skin; a membrane couple is attached to the surface of the simulated skin device; multiple sweating micropores connected with a control valve of a peristaltic pump are disposed on the simulated skin device; the testing accessory body comprises a clothed human body heat physiological model module, a control module and a surface heat flow calculation module; the surface heat flow calculation module is used for calculating the surface heat flow according to the sweating amount of the sweating micropores and the temperature of the membrane couple; and the clothed human body heat physiological model module is used for real-time sending signals for controlling the peristaltic pump and the heating plate to the control module by taking the calculated surface heat flow as a boundary condition. The self-adapting testing instrument can simulate human body heat physiological characteristics changing along with the ambient change.

The invention relates to a method for extracting dimensional shape characteristics of profiled fibers; the stepper motor in XYZ direction of an automatic loading table is controlled through a series port to realize the mobile control in horizontal and vertical directions to cause an optical microscope to work in an optimum focusing state. The extracting method comprises the following steps: giving 'cross-sectional samples of the profiled fibers' and 'microscopes for assembling three-dimensional automatic loading table' to judge through 'continuous indirect image acquisition' and 'automatic focusing'; if not, returning to the 'continuous indirect image acquisition'; if yes, going to 'partial image acquisition', then returning to the 'continuous indirect image acquisition' until the partialimage acquisition is ended; going to 'big image splicing'; obtaining 'clear fiber image panoramagram'; carrying out 'image segmentation', 'chain code representation', 'TAR calculation', 'TARN extraction', 'TARP extraction', and 'fiber geometrical shape determination' on the acquired images; and at last, carrying out 'fiber classification and statistics'.

The heat defending performance test equipment for heat defending suit or fabric consists of constant temperature test head and water tank measuring and control system, test head on the frame and surrounded with outer heat insulating layer, heat source layer and movable preheating shield layer sleeve, sample and skin simulator with air layer in between, thermocouples outside the skin simulator and connected to the measuring and control system, and constant column inside the skin simulator and with circular water channel connected to constant temperature water bath. The present invention has high test precision, stable and reliable operation and other advantages, and may be used in industrial production.

The invention relates to an image testing method for fabric dynamic and static drapability. The process includes the following steps: laying the sample on level plane formed by tray and light equal board, covering small disc, the lift structure lifting sample and tray, and stopping at the highest location, the sample is in overhang state; CCD camera sampling the image information into computer and display on screen, the overhang testing software distilling static index; if needing to take dynamic overhang image testing, rotating the sample and imaging, distilling dynamic overhang index; finally, output the result. The device is made up of tray, light equal board, lifting structure, rotating structure, CCD camera and computer. The relative software is stored in the computer. The invention has reliable structure and has high testing accuracy.'

The present invention belongs to the field of textile measuring instrument, and is one kind image test method and apparatus for the heat shrinkage of chemical fiber. The measuring method includes taking images of single fiber samples hung to cylindrical frame with CCD camera to obtain the length change before and after heating, and calculating in computer the heat shrinkage of chemical fiber. The measuring apparatus includes stepped motor, turntable, positioning pin, sample cylinder, elevator, metering calibration block, upper spring clamp, lower tensile clamp, holding circular ring, CCD camera, pulse distributor, casing, computer, display and printer. The present invention has the advantages of reliable test result, high precision, simple instrument structure and low fault rate.

The device is used for the automatic determination of characteristics on textile test material such as yarns, rovings, and slivers. A path is provided for the test material, through which path the test material is moved in its longitudinal direction. At least one measuring element for measuring a parameter of the test material is arranged along the path. In order to reduce the depositing of loose fibres, dust, or dirt particles, a plurality of suction elements, which are arranged along the path and spaced apart from one another, are provided and generate a vacuum, by means of which the undesired particles are sucked from the path.

The moisture content of a test material may be determined using a microwave-based process and device which is free from interference by multipath standing waves. Multipath signals may be electronically removed from the measured signal.

A method for detecting thermal insulation property of textile product TP includes heating test plate and protective plate as well as base plate to be temperature of 16deg.c higher than ambient one by instrument, judging whether temperature difference TD between test plate and ambient is over 16 minus or plus 0.5deg.c or not and increasing or decreasing duty ratio of square wave if it is to make TD be in scope of set value, detecting actual TD between test plate and average ambient then calculating out thermal insulation index and clausius value of TP according to final duty ration of square wave and heating power of test plate.

The invention discloses a proficiency testing sample for measuring the color fastness to perspiration of a textile and a preparation method of the sample. The proficiency testing sample is formed by dyeing a piece of pure cotton weaving tabby bleaching grey cloth by adopting an active dye or a direct dye, the detection result of the color fastness to acidic perspiration (which comprises an original sample discoloration level number, a cotton lining staining level number and a wool lining staining level number) is within 2 level-5 level and contains the daily detection range of the color fastness to acidic perspiration in the field of existing textile clothing, and the proficiency assessment of the detection items of different laboratories or the quality control usage of the laboratories can be realized. The preparation method of the proficiency testing sample has the advantages of easiness and convenience for operation, high success rate and high practicability; the prepared proficiency testing sample can be stored and transported at normal temperature and meets the uniformity and stability assessment guide requirement of a CNAS0GL03 proficiency testing sample in the aspects of uniformity and stability.

The invention relates to a multifunctional environment simulation test chamber for an on-line detecting textile material total organic volatile, comprising a main chamber body, an ultraviolet lamp, an ultrasonic humidifier, a VOC (Volatile Organic Compounds) sensor, an electric heater, a refrigerating compressor and a circulating fan. The main chamber body is provided with a sample injecting switch at the top end, an airtight door at the front surface, a cleaning drainage valve and an exhaust sampling electromagnetic valve at the bottom and the ultraviolet lamp inside; the ultrasonic humidifier is arranged on one side of the airtight door, the VOC sensor is arranged on the side surface of the main chamber body, the electric heater is connected with the main chamber body by a circulating air pipe, the refrigerating compressor is arranged on the lower part of the main chamber body, and the circulating fan is arranged below the electric heater. The invention has good stability and low cost, is easy to maintain, can detect the air for a long time, and is a fabric photocatalytic activity on-line VOC detection system comprising a special sensor, a basic evaluator, a data program, an on-line detection meter and the like by utilizing an on-line detection method.

The present invention relates generally to lifting gear such as cranes which use high-strength fiber ropes instead of steel ropes. In this respect, the invention in particular relates to an apparatus for recognizing the discard state of a high-strength fiber rope in use at such lifting gear comprising a detection device for detecting at least one rope parameter as well as comprising an evaluation unit for evaluating the rope parameter and for providing a discard signal in dependence on the rope parameter evaluation. In accordance with the invention, the detection device of the apparatus for recognizing the discard state comprises a plurality of differently configured detection means for a magnetic, mechanical, optical and/or electronic detection of a plurality of different rope parameters which can be evaluated by the evaluation unit individually and/or in combination with one another for recognizing the discard state.

The invention belongs to the textile fabric anti-crease performance measuring instrument field, in particular relates to a textile fabric crease elasticity tester which is characterized in that: the tester also comprises a camera, a microcomputer and a display unit, wherein the camera, which is arranged above a clamping device and can slide, is used to shoot the image when a textile fabric sample restores from bending; the microcomputer is used to process the image shot by the camera and to measure and calculate the numeric value of the crease recovery angle of the textile fabric sample in the image; the display unit is used to display the numeric value calculated by the microcomputer, and the numeric value is equal to the numeric value of the practical crease recovery angle of the textile fabric sample. The tester shoots the image after the textile fabric sample restoring from bending through adopting the camera with the image processed by the microcomputer, and the crease recovery angle of the textile fabric sample is automatically calculated by program, thereby ensuring the accuracy of measurement; in addition, because the tester does not adopt manual measurement basis, manual workload is also reduced.

A system and method for determining the orientation of fibers in a fibrous material web. The system includes at least one source of electromagnetic radiation disposed on one side of the fibrous material web, at least one sensor for sensing the electromagnetic radiation emitted by the at least one source disposed on another side of the fibrous material web, and at least one optical device disposed between the at least one source and the at least one sensor, wherein the electromagnetic radiation travels through the at least one optical device and the fibrous material web such that the at least one optical device influences a propagation of the electromagnetic radiation as a function of its polarization properties. The method includes exposing a first side of the fibrous material web to electromagnetic radiation from at least one source, allowing the electromagnetic radiation to penetrate to a second side of the fibrous material web, influencing a propagation of the electromagnetic radiation as a function of its polarization properties with at least one optical device disposed between the at least one source and at least one sensor, and sensing the electromagnetic radiation on the second side with the at least one sensor.

A system for analyzing the surface appearance of fabric is composed of a feeding mechanism for carrying a fabric to pass through a space, an image acquiring device to take multiple profiles of said fabric, and a computer, which can process the acquired images to obtain 3D data about the fabric surface, extracting the specific data, and comparing them with the reference to obtain the class and characteristic data of the fabric.

The invention relates to a simulated touch evaluation method for the surface quality of a material. The simulated touch evaluation method is characterized by comprising the steps of constructing a simulation measurement platform; suspending a textile test sample to generate deformation; enabling a bionic skin to do controlled multidirectional and multipoint contact motion relative to the textile test sample; simulating contact friction conditions under different touch speeds and different average touch forces; and calculating a simulated touch sensing signal. The simulated touch evaluation method can be used for vividly simulating a process of obtaining surface quality information when a human body touches a fabric with a finger and vividly simulating a real contact friction process between the skin of the human body and the fabric; tested force and vibration signals are analyzed through a human body touch sensing mechanism, and a corresponding relation of the signals is found according to the sensitivity of different touch sensors to different stimulations, and therefore, quantification and evaluation of touch of the human body on the surface quality of the fabric are realized.

<heading lvl="0">Abstract of Disclosure</heading> Machines for ultra-rapidly conditioning cotton fiber. In one embodiment, a machine includes a conditioning chamber for receiving cotton fiber formed into a sheet-like body. The conditioning chamber is defined on one side by an impervious plate and on an opposite side by a perforated plate. The sheet-like body of cotton fiber is pressed between the impervious and perforated plates. An air conditioner is connected for driving a conditioned gas flow through the perforations and then laterally through the sheet-like body of cotton fiber. In another embodiment, a conditioning chamber is defined on one side by an impervious plate and on an opposite side by a distribution plate having a series of alternating passages connected for respectively delivering gas flow to the cotton and for allowing gas flow to exit from the cotton. As a result, relatively short path lengths are achieved. An air conditioner is connected for driving a conditioned gas flow through the passages for delivering gas flow. In a processing embodiment for conditioning fiber being pneumatically transported by a gas flow, fibers are collected to form a thin mat. Aerosolized liquid is delivered to the thin mat, and then conditioned fiber from the thin mat is re-delivered into the gas flow.