GB1323567A - Process and apparatus for detecting pinholes in dielectric webs - Google Patents

Process and apparatus for detecting pinholes in dielectric webs

Info

Publication number
GB1323567A
GB1323567A GB4305970A GB4305970A GB1323567A GB 1323567 A GB1323567 A GB 1323567A GB 4305970 A GB4305970 A GB 4305970A GB 4305970 A GB4305970 A GB 4305970A GB 1323567 A GB1323567 A GB 1323567A
Authority
GB
United Kingdom
Prior art keywords
web
electrode
detector electrode
detector
supply
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
GB4305970A
Other languages
English (en)
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB1323567A publication Critical patent/GB1323567A/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
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/20—Investigating the presence of flaws
    • G01N27/205—Investigating the presence of flaws in insulating materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
GB4305970A 1969-09-10 1970-09-09 Process and apparatus for detecting pinholes in dielectric webs Expired GB1323567A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85657769A 1969-09-10 1969-09-10

Publications (1)

Publication Number Publication Date
GB1323567A true GB1323567A (en) 1973-07-18

Family

ID=25323989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4305970A Expired GB1323567A (en) 1969-09-10 1970-09-09 Process and apparatus for detecting pinholes in dielectric webs

Country Status (3)

Country Link
JP (1) JPS5039547B1 (enrdf_load_stackoverflow)
CA (1) CA919775A (enrdf_load_stackoverflow)
GB (1) GB1323567A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517489A (ja) * 1974-07-05 1976-01-21 Fujikura Ltd Zetsuendensenhifukufuryobuno kenshutsuhoho
US5844406A (en) * 1995-08-23 1998-12-01 Gormley; Gregory J. Method and apparatus for testing and measuring for porosity and anomalies of materials using electron beams
WO2003027657A3 (en) * 2001-09-28 2004-02-12 Polaroid Corp Method and apparatus for detecting pinhole defects in a dielectric layer
EP1022106A4 (en) * 1997-08-14 2006-10-11 Asahi Chemical Ind ARAMID FILM AND ITS USE, MANUFACTURING METHOD THEREOF, DETECTION OF PIN HOLE IN THE FILM, AND DETECTION DEVICE
CN110794031A (zh) * 2019-11-13 2020-02-14 山东天海新材料工程有限公司 一种土工膜在线渗漏点检测装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5341460U (enrdf_load_stackoverflow) * 1976-09-14 1978-04-10
US5204632A (en) * 1989-07-05 1993-04-20 Leach Eddie D Apparatus and method for detecting leaks in surgical and examination gloves
US5351008A (en) * 1993-01-25 1994-09-27 Associated Enterprises, Inc. Portable and disposable device for detecting holes or leaks in a surgical or examination glove

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321703A (en) * 1963-12-09 1967-05-23 Northern Electric Co Method and apparatus for testing a dielectric material in the presence of a gas by moving the material with a sufficient velocity to ionize the gas

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517489A (ja) * 1974-07-05 1976-01-21 Fujikura Ltd Zetsuendensenhifukufuryobuno kenshutsuhoho
US5844406A (en) * 1995-08-23 1998-12-01 Gormley; Gregory J. Method and apparatus for testing and measuring for porosity and anomalies of materials using electron beams
EP1022106A4 (en) * 1997-08-14 2006-10-11 Asahi Chemical Ind ARAMID FILM AND ITS USE, MANUFACTURING METHOD THEREOF, DETECTION OF PIN HOLE IN THE FILM, AND DETECTION DEVICE
WO2003027657A3 (en) * 2001-09-28 2004-02-12 Polaroid Corp Method and apparatus for detecting pinhole defects in a dielectric layer
US6707055B2 (en) 2001-09-28 2004-03-16 Polaroid Corporation Method and apparatus for detecting pinhole defects in a dielectric layer
CN110794031A (zh) * 2019-11-13 2020-02-14 山东天海新材料工程有限公司 一种土工膜在线渗漏点检测装置

Also Published As

Publication number Publication date
CA919775A (en) 1973-01-23
JPS5039547B1 (enrdf_load_stackoverflow) 1975-12-17

Similar Documents

Publication Publication Date Title
GB1149650A (en) Method for detecting changes in thickness of sheet materials
GB1335963A (en) Detection of electrostatic charge in flowing materials
GB876925A (en) Improvements in the coating of photographic emulsions
GB1323567A (en) Process and apparatus for detecting pinholes in dielectric webs
GB1415695A (en) Method and apparatus for locating faults in power lines
GB1166500A (en) Process and Apparatus for Coating a Moving Support
GB1320898A (en) Strip measuring unit and split edge detector
ES455316A1 (es) Aparato para perforar una banda en movimiento de material por descarga electrica.
US3790854A (en) Apparatus for removing static charge from webs of material
JPS52118135A (en) Misspark detecting apparatus
ES452115A1 (es) Perfeccionamientos introducidos en un aparato para neutrali-zar la carga electrica estatica de una lamina o banda que semueve con respecto a dicho aparato neutralizador.
US4233562A (en) Apparatus and method for monitoring web conductivity
GB1327148A (en) Method and apparatus for controlling the electrostatic condition of moving sheet or web material
US3321703A (en) Method and apparatus for testing a dielectric material in the presence of a gas by moving the material with a sufficient velocity to ionize the gas
GB1326472A (en) Apparatus and methods for controlling the electrostatic condition of moving sheet or web material
US3919635A (en) Apparatus and method for detecting holes in dielectric sheet materials
GB1248414A (en) Improvements in selective detection of ions
GB1325580A (en) Method and apparatus for increasing the charge density on the surface of non-conductive materials in industrial processes
GB1055911A (en) Improvements in or relating to the measurement of the water content of flexible sheet materials
US3757163A (en) Web treatment apparatus and methods
US3489895A (en) Regulated electrostatic charging apparatus
FR2366563A1 (fr) Detecteur de fumee
DE2224660C3 (de) Vorrichtung zur verhinderung einer flamm- oder explosionsgefahr in elektrostatischen beschichtungsanlagen
GB1121784A (en) Continuous friction measurement of moving web surfaces
GB1042049A (en) Treatment of plastics surfaces

Legal Events

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