GB1381878A - Apparatus for detecting irregularities in moving webs of material - Google Patents
Apparatus for detecting irregularities in moving webs of materialInfo
- Publication number
- GB1381878A GB1381878A GB4992971A GB4992971A GB1381878A GB 1381878 A GB1381878 A GB 1381878A GB 4992971 A GB4992971 A GB 4992971A GB 4992971 A GB4992971 A GB 4992971A GB 1381878 A GB1381878 A GB 1381878A
- Authority
- GB
- United Kingdom
- Prior art keywords
- web
- feelers
- window
- detecting irregularities
- paper
- 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.)
- Expired
Links
- 239000000428 dust Substances 0.000 abstract 1
- 230000000873 masking effect Effects 0.000 abstract 1
- 230000008719 thickening Effects 0.000 abstract 1
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
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8901—Optical details; Scanning details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
- G01N33/346—Paper sheets
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Textile Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Controlling Sheets Or Webs (AREA)
Abstract
1381878 Detecting irregularities in a moving web P LIPPKE 26 Nov 1971 [26 Nov 1970] 49929/71 Heading G1A In a device for detecting irregularities such as discolouration, holes and thickenings in a web of paper, a light beam passes via a transparent window 7, a radiant heat filter 4, masking members 18, 19 and a window 21, to be incident partly on the end portions of a row of feelers 12 which rest on the paper web moving over a roller 17, and partly on the web itself. The diffuse reflected light is received by a photo-sensitive element 22 and any marked change in the reflected light intensity indicates the presence of an irregularity be it due to a discolouration or a fault in the web's physical structure. The feelers are held in a slot 25 of a mounting 15 to permit adjustment of the feelers into and out of the beam path. A stream of air enters at aperture 9, passes along channel 8 and exits between feelers 12 and window 21 to remove paper dust.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702058101 DE2058101A1 (en) | 1970-11-26 | 1970-11-26 | Device for testing moving webs on paper and the like. for flaws such as discoloration, holes, thickening and similar defects |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1381878A true GB1381878A (en) | 1975-01-29 |
Family
ID=5789133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4992971A Expired GB1381878A (en) | 1970-11-26 | 1971-11-26 | Apparatus for detecting irregularities in moving webs of material |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2058101A1 (en) |
GB (1) | GB1381878A (en) |
IT (1) | IT938569B (en) |
SE (1) | SE363400B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2000285A (en) * | 1977-06-24 | 1979-01-04 | Research Technology | Film thickness detector |
WO2016139179A3 (en) * | 2015-03-02 | 2016-10-27 | BST ProControl GmbH | Method and device for measuring material which substantially extends in two dimensions |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4301598A (en) * | 1980-05-23 | 1981-11-24 | Molins Machine Company, Inc. | Single faced corrugated web thickness sensing apparatus |
US4513613A (en) * | 1983-06-07 | 1985-04-30 | International Business Machines Corporation | Particle detection system |
DE3736293A1 (en) * | 1987-10-27 | 1989-05-11 | Feldmuehle Ag | Method and device for testing a still wet coating on running webs |
DE3736265A1 (en) * | 1987-10-27 | 1989-05-11 | Feldmuehle Ag | Method and device for testing of a still wet coating on running webs |
ATE209781T1 (en) * | 1995-02-28 | 2001-12-15 | Rhodia Industrial Yarns Ag | METHOD AND DEVICE FOR DETERMINING STRUCTURAL DEFECTS ON RUNNING TEXTILE SURFACES |
-
1970
- 1970-11-26 DE DE19702058101 patent/DE2058101A1/en active Pending
-
1971
- 1971-11-02 SE SE1393171A patent/SE363400B/xx unknown
- 1971-11-23 IT IT490671A patent/IT938569B/en active
- 1971-11-26 GB GB4992971A patent/GB1381878A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2000285A (en) * | 1977-06-24 | 1979-01-04 | Research Technology | Film thickness detector |
GB2000285B (en) * | 1977-06-24 | 1982-01-27 | Research Technology | Film thickness detector |
WO2016139179A3 (en) * | 2015-03-02 | 2016-10-27 | BST ProControl GmbH | Method and device for measuring material which substantially extends in two dimensions |
Also Published As
Publication number | Publication date |
---|---|
DE2058101A1 (en) | 1972-06-22 |
IT938569B (en) | 1973-01-25 |
SE363400B (en) | 1974-01-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |