EP0990510B1 - Verfahren zur Produktionsüberwachung bei der Herstellung von Tabletten in einer Rundläufertablettiermaschine - Google Patents
Verfahren zur Produktionsüberwachung bei der Herstellung von Tabletten in einer Rundläufertablettiermaschine Download PDFInfo
- Publication number
- EP0990510B1 EP0990510B1 EP99118500A EP99118500A EP0990510B1 EP 0990510 B1 EP0990510 B1 EP 0990510B1 EP 99118500 A EP99118500 A EP 99118500A EP 99118500 A EP99118500 A EP 99118500A EP 0990510 B1 EP0990510 B1 EP 0990510B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- production
- tablets
- readings
- mean value
- pressing force
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 6
- 238000012544 monitoring process Methods 0.000 title claims description 5
- 238000003825 pressing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims 2
- 238000005259 measurement Methods 0.000 description 6
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/005—Control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
- B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0094—Press load monitoring means
Definitions
- the invention relates to a method for production monitoring in the manufacture of tablets in a rotary tablet machine.
- the invention is therefore based on the object, a method for production monitoring in the production of compacts in rotary tableting machines to indicate the variations in the weight of the tablet in extremely small limits.
- Outliers for the pressing force measurements can be caused by, for example Double pressing, signal disturbances in the measuring chain, damage of Press surfaces, unwanted coatings on the stamp, etc.
- the ordinal number of the stamp pair whose readings led to elimination, stored. It can be that outliers are caused by permanent defects, for example Break of a stamp, too big or too small stamp length etc .. With the invention it is recognized in which pair of stamps the error occurs, so that it can then be eliminated.
- the statistical method that can be used in the invention and also referred to as the Shapiro-Wilks test or the Nalimov test known in itself. Thereafter, a table is set up which the measured values per series of measurements, for example the complete number of pairs of stamps per rotary press, assigning a value that will be reached at least must be 95% of all readings in the middle range.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Description
Claims (2)
- Verfahren zur Produktionsüberwachung bei der Herstellung von Tabletten in einer Rundläufertablettiermaschine, mit einer Reihe von paarweise angeordneten Ober- und Unterstempeln, die mit Matritzenbohrungen zusammenwirken, bei dem für jedes Stempelpaar das Maximum der Preßkraft gemessen wird, über eine vorgewählte Anzahl von Meßwerten, auch Meßreihe genannt, ein Ist-Mittelwert berechnet und mit einem Soll-Mittelwert verglichen wird und die Zufuhr von Material zu den einzelnen Matrizenbohrungen, d.h. der Füllgrad geändert wird, wenn die Abweichung ein vorgegebenes Maß überschreitet, dadurch gekennzeichnet, daß vor der Mittelwertbildung diejenigen Preßkraftmeßwerte jeder Meßreihe eliminiert werden, die gegenüber den anderen Meßwerten signifikant abweichen, d.h. es wird ein Ausreißertest vorgenommen.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Ordnungszahl des Stempelpaars, dessen Meßwert eliminiert wird, gespeichert wird und die Produktion unterbrochen wird, wenn die Ordnungszahl eine vorgegebene Häufigkeit erreicht.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19844390A DE19844390B4 (de) | 1998-09-28 | 1998-09-28 | Verfahren zur Herstellung von Tabletten in einer Rundläufertablettiermaschine |
| DE19844390 | 1998-09-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0990510A2 EP0990510A2 (de) | 2000-04-05 |
| EP0990510A3 EP0990510A3 (de) | 2000-04-12 |
| EP0990510B1 true EP0990510B1 (de) | 2005-02-16 |
Family
ID=7882485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99118500A Expired - Lifetime EP0990510B1 (de) | 1998-09-28 | 1999-09-18 | Verfahren zur Produktionsüberwachung bei der Herstellung von Tabletten in einer Rundläufertablettiermaschine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6319435B1 (de) |
| EP (1) | EP0990510B1 (de) |
| DE (2) | DE19844390B4 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050200038A1 (en) * | 2004-03-12 | 2005-09-15 | Courtoy Nv | Method for controlling a rotary tablet press and such a press |
| DE102005007790B4 (de) | 2005-02-19 | 2007-06-28 | Fette Gmbh | Verfahren und Vorrichtung zur Versuchspressung von Mehrschichttabletten oder Manteltabletten |
| US8361360B2 (en) * | 2006-05-15 | 2013-01-29 | Courtoy Nv | Method for controlling a tablet press |
| WO2008016183A1 (fr) * | 2006-08-04 | 2008-02-07 | Brother Kogyo Kabushiki Kaisha | Appareil de formation d'image |
| CN108572602B (zh) * | 2018-07-23 | 2024-03-15 | 上海海得控制系统股份有限公司 | 一种压片机的控制装置 |
| DE102022131493A1 (de) * | 2022-11-29 | 2024-05-29 | Fette Compacting Gmbh | Verfahren zum Bewerten des Zustands von Pressstempeln einer Rundläuferpresse sowie Rundläuferpresse |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6025277B2 (ja) | 1979-06-18 | 1985-06-17 | 三井東圧化学株式会社 | 感熱記録シ−ト |
| US4570229A (en) * | 1983-09-19 | 1986-02-11 | Pennwalt Corporation | Tablet press controller and method |
| US4817006A (en) * | 1986-03-28 | 1989-03-28 | Thomas Engineering, Inc. | Pharmaceutical tablet press control mechanism |
| DE3628757A1 (de) * | 1986-08-23 | 1988-03-03 | Fette Wilhelm Gmbh | Verfahren zur qualitaetssicherung bei der herstellung von tabletten |
| DE3823417A1 (de) * | 1988-07-11 | 1990-01-18 | Fette Wilhelm Gmbh | Verfahren und einrichtung zum ueberwachen der presskraefte der stempel einer tablettenpresse |
| DE3939956A1 (de) * | 1989-12-02 | 1991-06-06 | Fette Wilhelm Gmbh | Verfahren und einrichtung zum ueberwachen der presskraefte einer tablettiermaschine |
| US5838571A (en) * | 1996-01-29 | 1998-11-17 | Alza Corporation | Tablet press monitoring and controlling method and apparatus |
-
1998
- 1998-09-28 DE DE19844390A patent/DE19844390B4/de not_active Expired - Lifetime
-
1999
- 1999-09-18 EP EP99118500A patent/EP0990510B1/de not_active Expired - Lifetime
- 1999-09-18 DE DE59911636T patent/DE59911636D1/de not_active Expired - Lifetime
- 1999-09-27 US US09/406,585 patent/US6319435B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US6319435B1 (en) | 2001-11-20 |
| EP0990510A3 (de) | 2000-04-12 |
| EP0990510A2 (de) | 2000-04-05 |
| DE19844390B4 (de) | 2005-09-22 |
| DE59911636D1 (de) | 2005-03-24 |
| DE19844390A1 (de) | 2000-04-06 |
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