CA2099272A1 - Marking element - Google Patents

Marking element

Info

Publication number
CA2099272A1
CA2099272A1 CA002099272A CA2099272A CA2099272A1 CA 2099272 A1 CA2099272 A1 CA 2099272A1 CA 002099272 A CA002099272 A CA 002099272A CA 2099272 A CA2099272 A CA 2099272A CA 2099272 A1 CA2099272 A1 CA 2099272A1
Authority
CA
Canada
Prior art keywords
marking element
barrier layer
temperature
prede
terial
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.)
Granted
Application number
CA002099272A
Other languages
French (fr)
Other versions
CA2099272C (en
Inventor
Terence Colley
Stephen Minter
John Carnie
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.)
Food Guardian Ltd
Original Assignee
Terence Colley
Stephen Minter
John Carnie
Food Guardian Limited
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 Terence Colley, Stephen Minter, John Carnie, Food Guardian Limited filed Critical Terence Colley
Publication of CA2099272A1 publication Critical patent/CA2099272A1/en
Application granted granted Critical
Publication of CA2099272C publication Critical patent/CA2099272C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
    • G01K3/04—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values in respect of time

Abstract

A marking element for indicating whether a pre-defined temperature condition has been maintained. The marking element (1) comprises a first material (8) capable of flowing above a pre-determined temperature separated from a second absorbent ma-terial (b) by a barrier layer (7). The first and second materials are such that when the barrier layer (7) is punctured and the prede-termined temperature is exceeded the first material (8) flows along the second material (6) to produce a detectable change.
CA002099272A 1990-10-26 1991-10-28 Marking element Expired - Fee Related CA2099272C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909023393A GB9023393D0 (en) 1990-10-26 1990-10-26 Marking element
GB9023393 1990-10-26
PCT/GB1991/001879 WO1992008113A1 (en) 1990-10-26 1991-10-28 Marking element

Publications (2)

Publication Number Publication Date
CA2099272A1 true CA2099272A1 (en) 1992-04-27
CA2099272C CA2099272C (en) 2002-09-17

Family

ID=10684444

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002099272A Expired - Fee Related CA2099272C (en) 1990-10-26 1991-10-28 Marking element

Country Status (6)

Country Link
JP (1) JP3056786B2 (en)
AU (1) AU660154B2 (en)
CA (1) CA2099272C (en)
GB (2) GB9023393D0 (en)
WO (1) WO1992008113A1 (en)
ZA (1) ZA918573B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1228366T3 (en) 1999-10-11 2015-07-06 Keep It Technologies As Full historical time-temperature indicator system
PL2412579T3 (en) * 2010-07-26 2014-07-31 Johnson Controls Gmbh Vehicle interior section with an indicator
ES2472721B1 (en) * 2014-04-15 2015-01-21 Cartonajes Santorromán, S.A. LABEL FOR TEMPERATURE AND TIME CONTROL, PROCEDURE FOR MANUFACTURE OF SUCH LABEL AND MACHINE FOR PRACTICE OF SUCH PROCEDURE

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055759A (en) * 1959-04-13 1962-09-25 John C Busby Temperature indicators
US3414415A (en) * 1965-10-22 1968-12-03 Robert L. Broad Jr. Thaw indicator
US3420205A (en) * 1966-03-23 1969-01-07 Miles Lab Indicating device
US3479877A (en) * 1968-08-28 1969-11-25 Minnesota Mining & Mfg Time-temperature indicator
US3751382A (en) * 1969-03-13 1973-08-07 Food Control Enzymatic indicator and method of making it
DE2130926C3 (en) * 1971-06-22 1973-11-15 Baumgartner Papiers S.A., Lausanne (Schweiz) Optical control indicator for frozen products
US4148272A (en) * 1978-04-10 1979-04-10 Paula Mann Thaw duration detector
IT1125893B (en) * 1979-12-04 1986-05-14 Sergio Marcialis THERMOMETRIC CONTROL DEVICE OF THE CONSTANCE OF A PREFIXED TEMPERATURE, SUITABLE TO INDICATE EVEN TEMPORARY INCREASES OF THAT TEMPERATURE
WO1982004478A1 (en) * 1981-06-09 1982-12-23 Bisgaard Hans Flinker A disposable maximum reading thermometer and a method for the production thereof
DE3210907C2 (en) * 1982-03-25 1984-07-19 Schwan-Stabilo Schwanhäußer GmbH & Co, 8500 Nürnberg Indicator for the display of a time / temperature load
NL8402181A (en) * 1983-12-23 1985-07-16 Draegerwerk Ag TEST TUBE WITH FRAGILE AMPOUL AS A TEMPERATURE LOAD INDICATOR.
NZ236469A (en) * 1989-12-14 1993-04-28 Food Guardian Ltd Temperature-sensitive indicator containing a fusible polymer

Also Published As

Publication number Publication date
GB9310864D0 (en) 1993-07-28
AU8750891A (en) 1992-05-26
AU660154B2 (en) 1995-06-15
WO1992008113A1 (en) 1992-05-14
JP3056786B2 (en) 2000-06-26
CA2099272C (en) 2002-09-17
GB9023393D0 (en) 1990-12-05
JPH06504117A (en) 1994-05-12
ZA918573B (en) 1992-08-26
GB2266954B (en) 1995-01-18
GB2266954A (en) 1993-11-17

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed