EP 0723656 A1 19960731 - SPECTROPHOTOMETRIC METHOD TO MEASURE QUALITY AND STRENGTH PARAMETERS IN TREES, LUMBER, TIMBER, CHIPS, SAW DUST, PULP AND PAPER
Title (en)
SPECTROPHOTOMETRIC METHOD TO MEASURE QUALITY AND STRENGTH PARAMETERS IN TREES, LUMBER, TIMBER, CHIPS, SAW DUST, PULP AND PAPER
Title (de)
SPEKTROPHOTOMETRISCHE METHODE ZUM MESSEN DER PARAMETER FÜR QUALITÄT UND FESTIGKEIT VON BÄUMEN, BAUHOLZ, SPÄNEN, SÄGEMEHL, PAPIERBREI UND PAPIER
Title (fr)
PROCEDE SPECTROPHOTOMETRIQUE POUR MESURER DES PARAMETRES DE QUALITE ET DE RESISTANCE DANS DES ARBRES, DU BOIS DE CONSTRUCTION, DES COPEAUX, DE LA SCIURE DE BOIS, DE LA PATE ET DU PAPIER
Publication
Application
Priority
- SE 9500560 W 19950517
- SE 9401707 A 19940518
Abstract (en)
[origin: WO9531710A1] The present invention relates to a process to determine quality properties, qualitative and quantitative parameters on cellulose fibre products such as trees, lumber, timber, chips, saw dust, pulp and paper before, during and after processing or parts thereof to a final product, crucial for product classification, sorting and monitoring and additions during different process steps characterised by treating data from spectroscopy in the wavelength region of 200-15400 nm of named fibre products by multivariate methods so-called chemometrics. The invention is not limited to the cellulose fibre products given above. Several parameters can be determined at the same time, chemical as well as physical as latent and collective parameters as processability. Further the status and changes in a process such as ageing or chemical conversion can be determined. Parameters and properties today taking hours and days to determine now can be made in minutes, seconds or parts thereof.
IPC 1-7
IPC 8 full level
G01N 21/35 (2006.01); G01N 33/34 (2006.01)
CPC (source: EP)
G01N 21/3563 (2013.01); G01N 21/359 (2013.01); G01N 33/343 (2013.01)
Citation (search report)
See references of WO 9531710A1
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
WO 9531710 A1 19951123; AU 2582795 A 19951205; EP 0723656 A1 19960731; SE 9401707 D0 19940518; SE 9401707 L 19951119
DOCDB simple family (application)
SE 9500560 W 19950517; AU 2582795 A 19950517; EP 95920348 A 19950517; SE 9401707 A 19940518