EP0570446A1 - Vorrichtung zur beschichtung einer presskammer mit einem schmiermittel. - Google Patents
Vorrichtung zur beschichtung einer presskammer mit einem schmiermittel.Info
- Publication number
- EP0570446A1 EP0570446A1 EP92904219A EP92904219A EP0570446A1 EP 0570446 A1 EP0570446 A1 EP 0570446A1 EP 92904219 A EP92904219 A EP 92904219A EP 92904219 A EP92904219 A EP 92904219A EP 0570446 A1 EP0570446 A1 EP 0570446A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- gas
- inner nozzle
- gas inlet
- lubricant
- 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
- 239000000314 lubricant Substances 0.000 title claims abstract description 38
- 239000011248 coating agent Substances 0.000 title claims abstract description 20
- 238000000576 coating method Methods 0.000 title claims abstract description 20
- 238000003825 pressing Methods 0.000 title description 3
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 239000006185 dispersion Substances 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000007142 ring opening reaction Methods 0.000 claims description 3
- 239000004480 active ingredient Substances 0.000 claims description 2
- 239000003814 drug Substances 0.000 claims description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims 2
- 235000019359 magnesium stearate Nutrition 0.000 claims 1
- 239000007789 gas Substances 0.000 description 31
- 238000000034 method Methods 0.000 description 6
- 239000000976 ink Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005499 meniscus Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
- B30B15/0011—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses lubricating means
Definitions
- the invention relates to a device for coating a substrate with a liquid, which in particular can be a dispersion or a suspension of a coating material in an evaporable carrier liquid, with a nozzle system which has at least one two-substance nozzle for the intermittent discharge of the liquid and for the discharge of a gas.
- Such devices for microdosing and in particular for introducing an active ingredient into a carrier, such as a tablet, can be used.
- a bale chamber coating device is shown, which is assumed in the formulation of the preamble of claim 1.
- a nozzle system is used which has a two-substance nozzle from which lubricant mixed with air emerges intermittently. For this purpose, lubricant medium and air are metered alternately into the nozzle prechamber.
- this known device allows a drastic reduction in the lubricant required per compact to orders of magnitude of 0.01 to 0.01 mg per compact, it has been recognized according to the invention that this known device also has a significant disadvantage, one there is a further reduction in the amount of lubricant used per compact:
- the invention is based on the object of developing a device for coating a substrate with a lubricant with a nozzle system which has at least one two-substance nozzle for the intermittent discharge of the liquid and for the discharge of a gas in such a way that it is possible among others to obtain annular application images on the substrate, so that, for example, when using the device according to the invention for coating a press chamber, the lubricant is primarily applied to the press chamber peripheral wall (mainly the die).
- the two-substance nozzle has an inner nozzle and an annular space coaxially surrounding it, in the lateral surface of which at least one gas inlet nozzle opens, the longitudinal axis of which does not intersect the longitudinal axis of the inner nozzle.
- the annular space has an outlet opening surrounding the outlet opening of the inner nozzle, a device with which the liquid can be supplied intermittently to the inner nozzle, and a further device is provided with which the gas can be fed continuously to the gas inlet nozzle.
- the gas entering the annular space which can be air in particular (claim 13), but also an inert gas such as nitrogen or a noble gas, is put into a "turbulent ring flow", which due to the metering of the liquid convex meniscus formed at the outlet opening of the inner nozzle then "entrains".
- the liquid is transported to the substrate essentially in a rotating path, which lies approximately on a conical surface.
- the conical path results in a significantly thicker coating of the peripheral surface than the bottom surface, and in particular an excellent coating Lubricant applied to the gap formed between the lower punch and the die.
- a nozzle system is provided for each of the upper and lower tools, which is arranged such that the outlet openings are opposite the respective bottom surface of the tool.
- the "cone angle" depends on the distance (in the direction of the longitudinal axis) of the inner nozzle from the surrounding outlet opening and the dimensions of the individual elements:
- the ring or point diameter is reduced. Conversely, the ring diameter increases when the distance is reduced:
- the suspensions which can be used according to the invention have the advantage that practically all of the alcohol (ethanol) "evaporates” between the outlet opening and the tool surface or substrate, so that the lubricant is applied “dry”.
- the permanent gas flow prevents the lubricant from “falling back” into the nozzle and other causes of contamination.
- the device according to the invention enables the smallest amounts of liquid to be metered, so that it can be used in particular for microdosing (claim 17).
- the gas inlet nozzle has a cross-sectional constriction for increasing the gas velocity, which in particular can at least reach the value 2.
- a turbulent gas flow to provide at least two gas inlet nozzles in the annular space.
- the gas inlet nozzles can be at a distance in the direction of the longitudinal axis of the inner nozzle (claim 8) or lie in the same plane, which is preferably as close as possible to the annular outlet opening.
- Fig. 2 shows a cross section at I-I in Fig. 1st
- the device according to the invention for coating a press chamber 1 with a lubricant has an inner nozzle 2 with a longitudinal axis 2 ', to which the lubricant is fed intermittently.
- a body 3 forms, together with the inner nozzle, an annular space 4 surrounding it.
- two gas inlet nozzles 51 and 52 with longitudinal axes 51 'and 52' are provided, which are diametrically opposed to one another with respect to the axis of the inner nozzle -
- In the embodiment shown - have a distance in the direction of the axis of the inner nozzle 2.
- the axis of the gas inlet nozzles do not intersect the axis of the inner nozzle 2.
- the axes of the gas inlet nozzle lie approximately in the tangent to the outer boundary wall of the annular space.
- a gas for example air
- the gas inlet nozzles 51 and 52 have a cross-sectional constriction, by means of which the cross-sectional area is typically reduced by a factor of at least 2. This makes it possible to supply small gas flows with low overpressures, typically in the range from 100 to 500 mbar. Nevertheless, there is good swirling of the gas in the annular space 4.
- An outlet opening 33 for the gas surrounding the inner nozzle 2 is provided in the end face 32 of the body 3.
- Outer diameter of the inner nozzle approx. 0.7 mm
- inner diameter of the inner nozzle approx. 0.4 mm
- Diameter of the outlet opening surrounding the inner nozzle approx. 1 mm
- the boundary surface of the inner nozzle is preferably ground conically at a 30 ° to 45 ° angle.
- the lubricant container can be a diffusion-proof bag with inlet and outlet and visual inspection.
- the liquid is preferably metered intermittently into the rotating gas stream with a high-speed microvalve.
- the dosing and dispensing process takes about 0.5 to 1 msec.
- An almost unpressurized liquid is applied to the valve, so that it can be controlled at frequencies of 100 to approximately 300 Hz or more. Nevertheless, the gas consumption is only about 2 1 / min.
- the lubricant is conveyed on a rotating path that runs obliquely to the nozzle axis by the inventive design.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4103413A DE4103413C1 (de) | 1991-02-05 | 1991-02-05 | |
DE4103413 | 1991-02-05 | ||
PCT/DE1992/000075 WO1992013643A1 (de) | 1991-02-05 | 1992-02-05 | Vorrichtung zur beschichtung einer presskammer mit einem schmiermittel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0570446A1 true EP0570446A1 (de) | 1993-11-24 |
EP0570446B1 EP0570446B1 (de) | 1997-05-07 |
Family
ID=6424405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92904219A Expired - Lifetime EP0570446B1 (de) | 1991-02-05 | 1992-02-05 | Verfahren zum Auftragen einer Flüssigkeit auf ein Substrat |
Country Status (5)
Country | Link |
---|---|
US (1) | US5609908A (de) |
EP (1) | EP0570446B1 (de) |
AT (1) | ATE152641T1 (de) |
DE (2) | DE4103413C1 (de) |
WO (1) | WO1992013643A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4400111C2 (de) * | 1994-01-04 | 2003-06-18 | Gunter M Voss | Verfahren zur Herstellung von Tabletten |
DE4400112A1 (de) * | 1994-01-04 | 1995-07-06 | Gunter M Voss | Verfahren zur Herstellung von Tabletten |
ES2130005B1 (es) * | 1995-06-05 | 2000-05-01 | Mangra S A | Dosificador de enzimas liquidas. |
US6620358B2 (en) * | 1996-07-03 | 2003-09-16 | Gunter Voss | Process for manufacturing tablets |
DE19647089A1 (de) * | 1996-11-14 | 1998-05-28 | Bayer Ag | Vorrichtung zum kontrollierten Aufsprühen von pulverförmigen Schmiermitteln auf Stempel und Matrizen von Tablettenpressen |
US6461812B2 (en) * | 1998-09-09 | 2002-10-08 | Agilent Technologies, Inc. | Method and multiple reservoir apparatus for fabrication of biomolecular arrays |
US6623785B2 (en) * | 2001-06-07 | 2003-09-23 | Hewlett-Packard Development Company, L.P. | Pharmaceutical dispensing apparatus and method |
US6962715B2 (en) * | 2001-10-24 | 2005-11-08 | Hewlett-Packard Development Company, L.P. | Method and dosage form for dispensing a bioactive substance |
US6702894B2 (en) | 2001-10-24 | 2004-03-09 | Hewlett-Packard Development Company, L.P. | Fluid ejection cartridge and system for dispensing a bioactive substance |
US6786591B2 (en) * | 2002-10-24 | 2004-09-07 | Hewlett-Packard Development Company, L.P. | Fluid ejector apparatus and methods |
US20040081689A1 (en) * | 2002-10-24 | 2004-04-29 | Dunfield John Stephen | Pharmaceutical dosage form and method of making |
JP2004298891A (ja) * | 2003-03-28 | 2004-10-28 | Mitsubishi Materials Corp | 粉末成形金型装置及び粉末成形体の成形方法 |
US8609198B2 (en) * | 2004-07-21 | 2013-12-17 | Hewlett-Packard Development Company, L.P. | Pharmaceutical dose form with a patterned coating and method of making the same |
DE102005037773B3 (de) * | 2005-08-10 | 2007-01-18 | Voss, Gunter M. | Verfahren zum Befilmen einer Oberflächenform mit einer Lösung |
US20070231435A1 (en) * | 2006-03-29 | 2007-10-04 | Wm Wrigley Jr. Company | Non-contact printed edible product and method for producing same |
US8733274B2 (en) * | 2006-10-20 | 2014-05-27 | Hewlett-Packard Development Company, L.P. | Tube mounted inkjet printhead die |
US7867548B2 (en) * | 2006-10-27 | 2011-01-11 | Hewlett-Packard Development Company, L.P. | Thermal ejection of solution having solute onto device medium |
EP2257279B1 (de) | 2008-02-28 | 2016-08-17 | AbbVie Inc. | Tablettenherstellungsverfahren |
DE102016123279B4 (de) * | 2016-12-01 | 2019-02-21 | Fette Compacting Gmbh | Verfahren und System zum Zuführen eines Schmier- oder Trennmittels zu Presswerkzeugen einer Tablettenpresse |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3857363A (en) * | 1972-08-14 | 1974-12-31 | Olivetti & Co Spa | Device for the mist lubrication of dies for sintering |
CH571365A5 (de) * | 1974-07-22 | 1976-01-15 | Fischer Ag Georg | |
DE2717438A1 (de) * | 1977-04-20 | 1978-10-26 | Gunter M Voss | Verfahren zum beschichten der presskammer von tablettiermaschinen |
DE2808342A1 (de) * | 1978-02-27 | 1979-09-06 | Gerd W Dr Ing Seifert | Verfahren zum erzeugen eines kegelfoermigen spruehstrahles sowie drallduesen- kapsel zur ausuebung des verfahrens |
ES485764A1 (es) * | 1978-11-15 | 1980-10-01 | Thomae Gmbh Dr K | Procedimiento para el recubrimiento de utiles de moldeo pa- ra la fabricacion de cuerpos moldeados. |
IT1134153B (it) * | 1979-11-21 | 1986-07-31 | Siv Soc Italiana Vetro | Ugello per depositare in continuo su un substrato uno strato di una materia solida |
DE3020764C2 (de) * | 1980-05-31 | 1984-05-17 | Kollross, Günter, 6080 Groß-Gerau | Verfahren und Vorrichtung zum innenseitigen Ölen von schlauchförmigem Verpackunsmaterial |
DE3312634A1 (de) * | 1983-04-08 | 1984-10-11 | Dr. Karl Thomae Gmbh, 7950 Biberach | Verbessertes verfahren und vorrichtungen zum bepunkten von formwerkzeugen mit troepfchen fluessiger oder suspendierter schmiermittel bei der herstellung von formlingen in pharma-, lebensmittel- oder katalysatorenbereich |
US4619597A (en) * | 1984-02-29 | 1986-10-28 | General Electric Company | Apparatus for melt atomization with a concave melt nozzle for gas deflection |
JPS62269767A (ja) * | 1986-04-28 | 1987-11-24 | ウエスタン パツケ−ジング システムス リミテツド | ノズル・アツセンブリ−及び物質排出方法 |
DE3902293A1 (de) * | 1989-01-26 | 1990-08-02 | Gunther M Voss | Neues verfahren zur presskammerbeschichtung mittels schmiermittelringbildung an der matrizenwand von tablettenpressen |
JPH02274559A (ja) * | 1989-04-18 | 1990-11-08 | Komori Corp | 画像印刷装置のヘッド |
-
1991
- 1991-02-05 DE DE4103413A patent/DE4103413C1/de not_active Expired - Lifetime
-
1992
- 1992-02-05 DE DE59208462T patent/DE59208462D1/de not_active Expired - Fee Related
- 1992-02-05 US US08/122,486 patent/US5609908A/en not_active Expired - Lifetime
- 1992-02-05 EP EP92904219A patent/EP0570446B1/de not_active Expired - Lifetime
- 1992-02-05 AT AT92904219T patent/ATE152641T1/de not_active IP Right Cessation
- 1992-02-05 WO PCT/DE1992/000075 patent/WO1992013643A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9213643A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4103413C1 (de) | 1992-11-12 |
DE59208462D1 (de) | 1997-06-12 |
US5609908A (en) | 1997-03-11 |
WO1992013643A1 (de) | 1992-08-20 |
ATE152641T1 (de) | 1997-05-15 |
EP0570446B1 (de) | 1997-05-07 |
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