METHOD FOR DETECTING DEFECTS IN A NONWOVEN SUBSTRATE
The present invention relates to a method for detecting defects in a web (30) of nonwoven fibrous material, wherein the nonwoven fibrous material comprises natural fibres, regenerated cellulose fibres, and mixtures thereof, comprising the steps of:advancing the nonwoven web (30) in contact with a ro...
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| creator | VARGA, Stephen Michael GABER, René FLOETER, Stefan |
| description | The present invention relates to a method for detecting defects in a web (30) of nonwoven fibrous material, wherein the nonwoven fibrous material comprises natural fibres, regenerated cellulose fibres, and mixtures thereof, comprising the steps of:advancing the nonwoven web (30) in contact with a roll through a detection zone (40);providing a sensor (20) in the detection zone (40) which detects variations in pressure between the nonwoven web (30) and the surface of the sensor (20);generating a signal from the sensor (20) when variations in pressure indicate the presence of a defect. |
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| language | eng ; fre ; ger |
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| subjects | BANDAGES, DRESSINGS OR ABSORBENT PADS BRAIDING COTTON-WOOL DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL MEASURING MEASURING ANGLES MEASURING AREAS MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEDICAL OR VETERINARY SCIENCE NON-WOVEN FABRICS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PHYSICS PROSTHESES TESTING TEXTILES TREATMENT OR PROTECTION OF EYES OR EARS TRIMMINGS WADDING |
| title | METHOD FOR DETECTING DEFECTS IN A NONWOVEN SUBSTRATE |
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