Selective on-line measurement of filler components in paper

Details Selective on-line measurement of filler components in paper Selective on-line measurement of filler components in paper

1987-12-18

1989-07-04

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Specific application

Absorption

378 51, G01N 22223, G01N 3334

Patent

active

048457302

ABSTRACT:
By applying infra-red radiation as well as beta-radiation measurement techniques combined with a characteristic x-radiation measurement technique using a mono-energetic and stable x-ray source, it is possible to carry out a very accurate selective filler measurement on a moving paper web containing two fillers, provided that at least one of the two fillers has a distinct absorption band in the infra-red radiation range. The web is irradiated by the individual measurement rays, and the detected measurement signals resulting from the irradiations of the web are processed in a micro-computer.

REFERENCES:
patent: 3904876 (1975-09-01), Arendt
patent: 4696023 (1987-09-01), Kuusi

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