GB1494426A - Measuring defects in seals - Google Patents

Measuring defects in seals

Info

Publication number
GB1494426A
GB1494426A GB1323175A GB1323175A GB1494426A GB 1494426 A GB1494426 A GB 1494426A GB 1323175 A GB1323175 A GB 1323175A GB 1323175 A GB1323175 A GB 1323175A GB 1494426 A GB1494426 A GB 1494426A
Authority
GB
United Kingdom
Prior art keywords
cap
seal
rotation
wavelength
light
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
Application number
GB1323175A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PHYSITRONIK GERAETEBAU GmbH
Original Assignee
PHYSITRONIK GERAETEBAU GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PHYSITRONIK GERAETEBAU GmbH filed Critical PHYSITRONIK GERAETEBAU GmbH
Publication of GB1494426A publication Critical patent/GB1494426A/en
Expired legal-status Critical Current

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
    • G01N21/88—Investigating the presence of flaws or contamination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/38—Investigating fluid-tightness of structures by using light

Landscapes

  • Physics & Mathematics (AREA)
  • General 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)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

1494426 Inspecting cap seals photo-electrically PHYSITRONIK GERATEBAU GmbH 1 April 1975 [30 March 1974] 13231/75 Heading G1A To inspect a seal formed in a cap, e.g. a bottle cap, the cap is rotated while being illuminated with mono-chromatic light; light reflected from the seal is detected and compared with a pre-set value so that if there is a defect in the seal the cap is rejected. The seal 2, Fig. 1, is formed in the cap by applying a sealing composition over the bottom of the cap; in use, an annular portion 4 of the seal will contact the rim of the bottle to be closed, and it is this portion which is illuminated by a suitably sized light spot or line, 5 or 6 respectively. The defects to be detected are generally holes in the seal, and the illuminating wavelength is chosen so that the seal and the cap have differing reflectivities at that wavelength. The incident and reflected rays may travel along separate paths, Fig. 3, (not shown), or may be combined by a beam-splitter 12, Fig. 4 (not shown); an equivalent of (Fig. 4) may be formed using fibre optics, Fig. 7 (not shown). The detector signal is gated so that it is used only when the cap has built up to full rotational speed, and the cap is' preferably examined for more than 360 degrees rotation. The light source may be continuous or pulsed, the latter case requiring a relationship between pulse rate and speed of rotation so that enough pulses occur during cap rotation. When the illumination is not of a visible wavelength, a visible source may be provided to aid initial alignment so that a desired annular region of the seal can be inspected.
GB1323175A 1974-03-30 1975-04-01 Measuring defects in seals Expired GB1494426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742415592 DE2415592C3 (en) 1974-03-30 1974-03-30 Method for measuring imperfections in an annular sealing zone provided with a sealing compound on the bottom of a rotationally symmetrical cover

Publications (1)

Publication Number Publication Date
GB1494426A true GB1494426A (en) 1977-12-07

Family

ID=5911750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1323175A Expired GB1494426A (en) 1974-03-30 1975-04-01 Measuring defects in seals

Country Status (5)

Country Link
JP (1) JPS519893A (en)
DE (1) DE2415592C3 (en)
FR (1) FR2266165B1 (en)
GB (1) GB1494426A (en)
NL (1) NL7503868A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2227091A (en) * 1988-08-25 1990-07-18 American National Can Co Detecting the application of sealing compound
WO2011051488A1 (en) 2009-10-30 2011-05-05 Sencon Europe Limited Application and inspection system

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52143982U (en) * 1976-04-26 1977-10-31
US4030835A (en) * 1976-05-28 1977-06-21 Rca Corporation Defect detection system
IT1143463B (en) * 1981-03-27 1986-10-22 Bonotto Snc Di Bonotto Giovann EQUIPMENT FOR IN-LINE CONTROL OF SEALING OF THE CAP IN VIALS
DE3144379C2 (en) * 1981-11-07 1987-01-02 Carl Schenck Ag, 6100 Darmstadt Procedure for carrying out crack investigations and test specimens for carrying out the procedure
JPS6391539A (en) * 1986-10-06 1988-04-22 Ueno Hiroshi Apparatus for inspecting through-hole of thin plate
FR2643149B1 (en) * 1989-02-16 1994-10-21 Elmetherm METHOD AND DEVICE FOR CHECKING THE SEALING OF ENCLOSING PRODUCTS SUCH AS LATEX GLOVES
DE10235658B4 (en) * 2002-08-02 2007-01-11 Helmut Kappner Testing device and test method for seals of closures
DE102018209365A1 (en) * 2018-06-12 2019-12-12 Henkel Ag & Co. Kgaa Method for quality control of a closure of a washing and washing-up liquid bottle
CN110867390A (en) * 2018-08-28 2020-03-06 三星显示有限公司 Method for manufacturing display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2227091A (en) * 1988-08-25 1990-07-18 American National Can Co Detecting the application of sealing compound
WO2011051488A1 (en) 2009-10-30 2011-05-05 Sencon Europe Limited Application and inspection system

Also Published As

Publication number Publication date
FR2266165A1 (en) 1975-10-24
DE2415592A1 (en) 1975-10-09
FR2266165B1 (en) 1977-07-22
JPS519893A (en) 1976-01-26
DE2415592C3 (en) 1979-06-21
DE2415592B2 (en) 1976-10-21
NL7503868A (en) 1975-10-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee