FR2416461A1 - Dispositif pour mesurer la porosite d'une bande en mouvement en papier ou en un materiau analogue permeable a l'air - Google Patents
Dispositif pour mesurer la porosite d'une bande en mouvement en papier ou en un materiau analogue permeable a l'airInfo
- Publication number
- FR2416461A1 FR2416461A1 FR7901489A FR7901489A FR2416461A1 FR 2416461 A1 FR2416461 A1 FR 2416461A1 FR 7901489 A FR7901489 A FR 7901489A FR 7901489 A FR7901489 A FR 7901489A FR 2416461 A1 FR2416461 A1 FR 2416461A1
- Authority
- FR
- France
- Prior art keywords
- esp
- polarisers
- light detector
- optical beam
- display circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/86—Investigating moving sheets
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Paper (AREA)
- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
L'invention est relative à un dispositif pour mesurer la porosité d'une bande en mouvement, comportant de part et d'autre de la bande une source lumineuse d'une part et, d'autre part un récepteur photo-électrique. Selon l'invention, il est prévu entre la source 3 de lumière et la bande 2 un premier polarisateur 6 et entre la bande et le récepteur 9 un second polarisateur 7. Le dispositif est utilisable pour mesurer la porosité d'une bande de papier ou analogue servant au gainage des cigarettes ou articles analogues.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782804975 DE2804975A1 (de) | 1978-02-06 | 1978-02-06 | Vorrichtung zum messen der porositaet einer bewegten bahn aus papier oder einem aehnlichen luftdurchlaessigen material |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2416461A1 true FR2416461A1 (fr) | 1979-08-31 |
Family
ID=6031266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7901489A Withdrawn FR2416461A1 (fr) | 1978-02-06 | 1979-01-22 | Dispositif pour mesurer la porosite d'une bande en mouvement en papier ou en un materiau analogue permeable a l'air |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS54108684A (fr) |
DE (1) | DE2804975A1 (fr) |
FR (1) | FR2416461A1 (fr) |
IT (1) | IT1110091B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7224447B2 (en) | 2004-03-08 | 2007-05-29 | Philip Morris Usa Inc. | System and method for measuring the permeability of a material |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4684256A (en) * | 1983-12-30 | 1987-08-04 | Nitto Electric Industrial Co., Ltd. | Apparatus and method for continuously measuring polarizing property |
DE3430439A1 (de) * | 1984-08-18 | 1986-05-07 | Hoechst Ag, 6230 Frankfurt | Verfahren und anordnung zur steuerung von verfahrensparametern bei der herstellung verstreckter folien |
DE4302137C2 (de) * | 1993-01-27 | 1999-09-02 | Micro Perforation Engineering | Verfahren und Vorrichtung zur optischen Porositätsmessung an einer laufenden Bahn |
DE4421962C1 (de) * | 1994-06-23 | 1996-01-04 | Mpe Micro Perforation Engineer | Verfahren und Vorrichtung zur optischen Vermessung von Mikroperforationsspuren in bewegtem Bahnmaterial |
DE19616018C2 (de) * | 1996-04-23 | 2002-10-24 | Mpe Micro Perforation Engineer | Verfahren und Vorrichtung zur optischen Porositätsmessung in einer laufenden Bahn |
WO2017136404A1 (fr) * | 2016-02-05 | 2017-08-10 | The Procter & Gamble Company | Procédé et appareil de détection de trous dans des substrats dans des lignes de conversion d'articles absorbants |
-
1978
- 1978-02-06 DE DE19782804975 patent/DE2804975A1/de not_active Withdrawn
-
1979
- 1979-01-09 JP JP174179A patent/JPS54108684A/ja active Pending
- 1979-01-22 FR FR7901489A patent/FR2416461A1/fr not_active Withdrawn
- 1979-02-02 IT IT19832/79A patent/IT1110091B/it active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7224447B2 (en) | 2004-03-08 | 2007-05-29 | Philip Morris Usa Inc. | System and method for measuring the permeability of a material |
Also Published As
Publication number | Publication date |
---|---|
DE2804975A1 (de) | 1979-08-09 |
JPS54108684A (en) | 1979-08-25 |
IT7919832A0 (it) | 1979-02-02 |
IT1110091B (it) | 1985-12-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |