FR2239677A1 - Verifying correct freezing of food prod - using seal that deforms if temp. exceeds upper limit - Google Patents
Verifying correct freezing of food prod - using seal that deforms if temp. exceeds upper limitInfo
- Publication number
- FR2239677A1 FR2239677A1 FR7328054A FR7328054A FR2239677A1 FR 2239677 A1 FR2239677 A1 FR 2239677A1 FR 7328054 A FR7328054 A FR 7328054A FR 7328054 A FR7328054 A FR 7328054A FR 2239677 A1 FR2239677 A1 FR 2239677A1
- Authority
- FR
- France
- Prior art keywords
- temp
- prod
- seal
- deforms
- upper limit
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/06—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using melting, freezing, or softening
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
Verification that a prod., and partic. a food prod., has been preserved below a given limiting temp. is assured by moulding the prod. into a special indicating shape; this becomes deformed if the temp. rises too high and it can not return to its original shape whatever the subsequent temp. changes. Another form of indicator is in the form of a seal; this is made from body whch is solid below below -18 degrees C and liq. above this temp. It can be made from a mixt. of water and glycol and is frozen in a mould at the same time as the prod. It is then introduced into a plastic pocket with the prod. to be verified so that it can be seen from the outside of the package. If the temp. should rise too high the seal is irreversibly deformed and cannot be re-modelled. Method of verification is easy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7328054A FR2239677A1 (en) | 1973-07-31 | 1973-07-31 | Verifying correct freezing of food prod - using seal that deforms if temp. exceeds upper limit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7328054A FR2239677A1 (en) | 1973-07-31 | 1973-07-31 | Verifying correct freezing of food prod - using seal that deforms if temp. exceeds upper limit |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2239677A1 true FR2239677A1 (en) | 1975-02-28 |
FR2239677B3 FR2239677B3 (en) | 1976-07-16 |
Family
ID=9123411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7328054A Granted FR2239677A1 (en) | 1973-07-31 | 1973-07-31 | Verifying correct freezing of food prod - using seal that deforms if temp. exceeds upper limit |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2239677A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2472741A1 (en) * | 1979-12-28 | 1981-07-03 | Cardon Jean Pierre | Indicator to reveal temp. rise of refrigerated prod. - esp. frozen food uses indicator material which melts at critical temp. |
US4998827A (en) * | 1987-05-20 | 1991-03-12 | Walter Holzer | Cold indicator for controlling the cooling or freezing of foods, medicines and the like |
US5301632A (en) * | 1989-01-09 | 1994-04-12 | Jean-Luc Berry | Control sample of a deep-frozen product or a product, whose keeping temperature must be checked |
-
1973
- 1973-07-31 FR FR7328054A patent/FR2239677A1/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2472741A1 (en) * | 1979-12-28 | 1981-07-03 | Cardon Jean Pierre | Indicator to reveal temp. rise of refrigerated prod. - esp. frozen food uses indicator material which melts at critical temp. |
US4998827A (en) * | 1987-05-20 | 1991-03-12 | Walter Holzer | Cold indicator for controlling the cooling or freezing of foods, medicines and the like |
US5301632A (en) * | 1989-01-09 | 1994-04-12 | Jean-Luc Berry | Control sample of a deep-frozen product or a product, whose keeping temperature must be checked |
Also Published As
Publication number | Publication date |
---|---|
FR2239677B3 (en) | 1976-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |