EP 1188043 A1 20020320 - METHOD AND DEVICE FOR DETECTING FOREIGN MATTER IN A FIBRE COMPOSITE MOVING IN THE LONGITUDINAL DIRECTION
Title (en)
METHOD AND DEVICE FOR DETECTING FOREIGN MATTER IN A FIBRE COMPOSITE MOVING IN THE LONGITUDINAL DIRECTION
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ERKENNEN VON FREMDSTOFFEN IN EINEM LÄNGSBEWEGTEN FASERVERBUND
Title (fr)
PROCEDE ET DISPOSITIF DE DETECTION DE CORPS ETRANGERS DANS UN MATERIAU RENFORCE PAR DES FIBRES ET A DEPLACEMENT LONGITUDINAL
Publication
Application
Priority
- CH 0000285 W 20000522
- CH 100799 A 19990529
Abstract (en)
[origin: WO0073771A1] The invention relates to a method and a device for detecting foreign matter in a fibre composite moving in the longitudinal direction and consisting substantially of wool or cotton fibres. To provide an improved, easier and rapid method of detecting polypropylene in fibres intended for textile products the fibre composite is irradiated with infrared light (2, 3) in a defined wavelength range, the reflected light filtered (13) and the filtered fraction of the light measured (11). Values which significantly deviate from a base value indicate the presence of foreign matter.
IPC 1-7
IPC 8 full level
G01N 21/892 (2006.01); D06H 3/08 (2006.01); G01N 21/89 (2006.01); G01N 33/36 (2006.01)
CPC (source: EP US)
G01N 21/8915 (2013.01 - EP US); G01N 33/365 (2013.01 - EP US)
Citation (search report)
See references of WO 0073771A1
Designated contracting state (EPC)
BE CH DE FR GB IT LI
DOCDB simple family (publication)
WO 0073771 A1 20001207; CN 100387974 C 20080514; CN 1353811 A 20020612; EP 1188043 A1 20020320; JP 2003501623 A 20030114; US 6771365 B1 20040803
DOCDB simple family (application)
CH 0000285 W 20000522; CN 00808205 A 20000522; EP 00925016 A 20000522; JP 2001500845 A 20000522; US 97998601 A 20011231