EP2755774B1 - Messergiesser für hochviskose beschichtungsmassen - Google Patents

Messergiesser für hochviskose beschichtungsmassen Download PDF

Info

Publication number
EP2755774B1
EP2755774B1 EP12772080.3A EP12772080A EP2755774B1 EP 2755774 B1 EP2755774 B1 EP 2755774B1 EP 12772080 A EP12772080 A EP 12772080A EP 2755774 B1 EP2755774 B1 EP 2755774B1
Authority
EP
European Patent Office
Prior art keywords
distribution chamber
feed gap
feeder head
head according
feed
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.)
Active
Application number
EP12772080.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2755774A1 (de
Inventor
Ludwig Grader
Mustafa Ay
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.)
Bayer Pharma AG
Original Assignee
Bayer Pharma AG
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 Bayer Pharma AG filed Critical Bayer Pharma AG
Priority to SI201230567A priority Critical patent/SI2755774T1/sl
Priority to RS20160415A priority patent/RS54836B1/sr
Publication of EP2755774A1 publication Critical patent/EP2755774A1/de
Application granted granted Critical
Publication of EP2755774B1 publication Critical patent/EP2755774B1/de
Priority to HRP20160620TT priority patent/HRP20160620T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet

Definitions

  • the present invention relates to applicators for the continuous application of viscous coating compositions on film webs and in particular to a coater for producing coatings with uniform layer thicknesses.
  • Coating units for the continuous coating of film webs with viscous coating compositions generally comprise an area where a coating composition of a so-called foundry is applied to the film web in a defined dosage.
  • foundries such as e.g. Extrusion casters, Pflatschg banker, Streichrakelg banker, Antechnikg fabricer, roller or Walzeng banker or Schlitzg corder, and of these in particular knife pourers, for use.
  • Schlitzg fabric foundries are generally referred to, in which the coating material exits through a slit-shaped gap from the casting head.
  • the slot-shaped gap connects a distribution chamber formed in the interior of the casting head and provided with an inlet to the outside of the casting head and serves for the defined supply of a coating material from the distribution chamber to the surface of the casting head.
  • the distribution chamber is connected to a drain different from the slot-shaped feed gap, whereby more coating mass flows through the distribution chamber than exits via the feed gap.
  • Coatings for the preparation of drug depots for transdermal therapeutic systems require a particularly uniform coating order, as this in addition to a homogeneous distribution of active ingredients in the coating composition is a prerequisite for a targeted dosage of transdermally administered drugs.
  • Knife pourers enable a precisely metered, uniform application of coating compositions to film webs and are therefore often used for the production of drug depots for transdermal therapeutic systems.
  • Knife pourers have, as a core element, a pouring head with a tubular distribution chamber arranged in the interior, which is open along its length via a slot-shaped gap to one side of the pouring head.
  • the distribution chamber is flowed through by the coating compound or the coating material in standard knife pourers, the coating chamber being supplied with the coating composition for this purpose at an end designed as an inlet and being discharged via the other end formed as a drain.
  • the pressure of the coating composition in the distribution chamber is higher than the ambient pressure of the casting head, so that part of the coating material supplied via the inlet is guided via the slot-shaped gap to the outside of the casting head.
  • the coating compound emerging from the casting head via this feed gap wets the film web which is guided along adjacent thereto, so that it is carried along by it and forms a layer of coating material thereon as a consequence.
  • the length of the feed gap determines the width of the coating layer applied to the film.
  • the thickness of a coating layer applied as described is essentially determined by the flow of the coating material through the feed gap, the gap between the feed nip and the film web, the viscosity of the coating material and the speed of the film web relative to the feed nip.
  • the flow of coating material through the supply nip in turn is a function of the pressure prevailing in the distribution chamber and the height and width of the supply nip.
  • a uniform coating thickness across the width of the film web requires a uniform material flow of the coating composition over the length of the feed gap. This is given when the pressure drop along the flow direction of the distribution chamber is negligible.
  • the pressure drop between inlet and outlet of the distribution chamber is a function of the distance between inlet and outlet and the viscosity of the coating material. The higher the viscosity of the coating material or the greater the distance between inlet and outlet of the distribution chamber, the greater the pressure difference.
  • a reduction in the layer thickness variation caused by the pressure drop along the longitudinal direction of the distribution chamber can be achieved by pointing to the inlet of the distribution chamber End of the feed gap is arranged closer to the film web than the end of the supply gap facing the end of the distribution chamber.
  • a compensation of the layer thickness variation by a correspondingly inclined alignment of a Meßergelloers is only to a small extent possible, in particular because the pressure along the distribution chamber does not decrease linearly and thus also the introduced from the distribution chamber in the feed gap flux of the coating composition varies non-linearly along the length of the casting head ,
  • the coating composition can be fed centrally to the distribution chamber and then discharged at its two front ends.
  • the reverse case with a feed on both sides and a central discharge of the coating mass is also possible. Since each partial flow of the coating material in such Mehrstromg confuseköpfen covers only half the distance, the pressure drops in the distribution chamber are reduced to half. By using multiple inlets and outlets, the pressure drops along the length of the distribution chamber can be further reduced.
  • such constructions are not only very expensive to manufacture, but in use require an exact coordination of the individual partial flows.
  • variations in the coating thickness with multi-flow casting heads can indeed be reduced, but not completely avoided due to the reduced but nevertheless always present pressure drops in the distribution chamber.
  • Embodiments of corresponding knife pourers comprise a pouring head with a tubular distribution chamber extending from at least one inlet opening to at least one drain opening and a feed gap which laterally adjoins the distribution chamber arranged at least along part of the length of the distribution chamber arranged in the interior of the pouring head.
  • the feed gap extends to form an opening of the distribution chamber to a surface of the casting head from the distribution chamber to this surface, wherein the cross section of the feed gap varies along the length of the feed gap.
  • document CH 597 928 A5 discloses a casting head according to the preamble of claim 1.
  • the at least one inlet opening, the at least one drain opening and the distribution chamber are arranged such that substantially no dead zones can form.
  • the term "dead zones” here are areas in the distribution chamber to understand that are not flowed through during operation of the casting head of the coating material or not so that they are part of the directed from the inlet opening to the drain port and the feed main flow Are to be considered coating.
  • substantially no dead zones is to be understood as meaning that the volume of possibly existing dead zones, for example in the area around an inlet and outlet opening, is so small that they do not lead to the formation of deposits of the coating composition and the main flow of the coating composition is not negative affect.
  • a part of the distribution chamber located outside the part of the distribution chamber connecting the discharge opening and the inlet opening is arranged, whose extent in which the discharge opening and the Inlet opening connecting direction is a maximum of 5 mm.
  • the pouring heads are designed so that the inlet opening, the outlet opening and the distribution chamber are arranged such that a coating material emerging from the discharge opening has the pouring head flowing through in a substantially U-shaped manner.
  • U-shaped is to be understood as meaning at least a first planar geometry in which a straight or curved middle region adjoins each of the two ends of a straight or curved middle region, both leg regions extending away from the middle element towards the same side
  • Embodiments of the casting head may include two non-identical plates and optionally at least one intermediate shim foil.
  • the term "plate” here is to be understood to mean a planar, in a first approximation, flat component whose thickness dimensions are substantially smaller than its dimensions transversely to the thickness direction. However, the thickness of the plate may, for example, due to formed in the plate recesses or due to projections on different places of the plate be different.
  • Shim foil is a thin, flat-shaped object to be understood, which is used as an intermediate layer.
  • one of the two plates comprises neither a drain opening nor an inlet opening, so that both openings are formed on the other of the two plates and thus results in a particularly simple and easy-to-clean construction of the casting head.
  • the variation of the cross-section of the feed gap is preferably formed as a variation of the height-to-width ratio of the feed gap along its longitudinal direction, whereby a flow resistance varying with respect to the longitudinal direction of the feed gap is achieved.
  • Embodiments of such embodiments advantageously have a constant width of the feed gap and a varying along the longitudinal direction of the feed gap height of the feed gap, whereby the feed gap can be made particularly simple.
  • Preferred embodiments thereof have a progression shape of the height of the feed gap which decreases in the direction of the flow of the distribution chamber, whereby the pressure drop in the distribution chamber can be compensated in a simple manner.
  • Solutions of the above problems comprise a plate partially covered with a shim foil for producing a casting head as previously described, wherein both the shim foil and the plate each have an inlet opening and a drain opening, and wherein the arrangement of the shim foil and said openings enables the production of a casting head whose feed gap is a height has, which has a decreasing in the direction of the flow of the distribution chamber shape.
  • Solutions of the above problems further comprise a plate partially covered with a shim foil for producing a casting head as described above, wherein the plate has an elongated depression for forming the distribution chamber, and wherein the depression and the shim foil are arranged such that after the casting head has been produced a supply gap can be formed, the height of which has a decreasing in the direction of the flow of the distribution chamber shape.
  • An "elongated depression” here is to be understood as a recess which does not form an opening connecting the two main side surfaces of the plate and whose longitudinal extent is substantially greater than its width extension.
  • Solutions of the above problems further comprise a plate partially covered with a shim foil as aforesaid or a two non-identical plates and optionally at least one intermediate shim foil, wherein the shim foil has a thickness of less than 3 mm, preferably less than 2 mm and most preferably less than 1 mm.
  • Solutions to the above problems also comprise a plate partially covered with a shim foil or a non-identical plate as previously indicated and optionally at least one intermediate shim foil, wherein the shim foil is suitable for the manufacture of transdermal therapeutic systems (TTS) Solvent is insoluble and the solvent is preferably heptane.
  • suitable solvents are all solvents which are suitable for dissolving the matrix material used in each case for the formation of a TTS, and which remain in the matrix material on completion of a TTS remaining residues in users cause no significant skin irritation.
  • Solutions of the above problems also include a casting head having a partially covered with a shim foil plate with openings formed therein for the inlet and outlet of coating material.
  • embodiments of embodiments of casting heads as described above advantageously have a constant height of the feed gap at a width of the feed gap varying along the longitudinal direction of the feed gap, whereby the width of the feed gap can also change along the direction pointing from the distribution chamber to the surface of the pouring head.
  • Zuschspaltgeometrien are by conventional material removal methods such. B. milling easy to produce.
  • the width of the feed gap preferably has a progression shape which increases in the direction of the outlet of the distribution chamber.
  • the width of the feed gap on the surface of the casting head is constant and widens, possibly apart from the inlet end of the feed gap, both towards the distribution chamber and toward the downstream end of the feed gap.
  • Such a geometry allows a variation of the flow resistance along the feed gap without altering the wetting conditions along the discharge opening of the feed gap.
  • preferred embodiments have a non-linear characteristic of the shape of the height-to-width ratio of the supply nip.
  • a non-linear characteristic is determined using a mathematical model of the fluid mechanics of a coating material in the casting head, whereby experimental determinations may be used.
  • the non-linear characteristic is determined purely experimentally.
  • the casting head comprises two non-identical plates and an intermediate shim foil, the width of the feed gap being determined by the dimensions of the shim foil.
  • the term "dimension" of the shim foil is to be understood here as meaning its thickness extent, which can assume different values at different points, for example in order to realize a supply gap width varying in the longitudinal direction and / or height direction of the feed gap.
  • the at least one inlet opening and / or the at least one drain opening and / or the at least one tubular distribution chamber and / or the feed gap is at least partially filled with an active ingredient-containing coating material.
  • Solutions of the above problems further comprise a device comprising a casting head as described above, wherein the drain opening is connected to a collecting container so that the coating material emerging from the drainage opening can pass into said collecting container.
  • Solutions of the above problems further comprise a method for the uniform application of a non-Newtonian coating composition to a film web, wherein a casting head as described above is flowed through during the coating process with the non-Newtonian coating composition.
  • a "non-Newtonian coating composition” is to be understood as meaning a liquid fluid which has a behavior deviating from that of a Newtonian fluid, ie a fluid with a linear, inelastic flow behavior, in which the shear rate is proportional to the shear stress.
  • the non-Newtonian coating composition is a drug-containing composition for the preparation of transdermal therapeutic systems (TTS).
  • TTS transdermal therapeutic systems
  • the method of varying the width of the feed channel along its longitudinal extent may include a step of applying compressive forces varying along the longitudinal extent of the feed channel to the shim foil.
  • Solutions of the above problems also include the use of a pouring head as described above in the production of transdermal therapeutic systems (TTS).
  • TTS transdermal therapeutic systems
  • FIG. 1 illustrates a pouring head 10 for a Meßerg corder not shown in a, containing a cross-sectional view 11, schematic perspective view of the casting head.
  • a tubular distribution chamber 1 is formed inside the housing 3 of the casting head 10.
  • an embodiment of the distribution chamber is to be understood in this document, an embodiment of the distribution chamber as an elongated cavity. A limitation to certain cross-sectional geometries of the distribution chamber does not exist here.
  • the longitudinal direction of the distribution chamber extends substantially in the direction of the longitudinal extension 1 of the casting head 10.
  • On one of the end sides of the casting head is the inlet opening 4, on which the opposite end face the drain opening 5.
  • the side surface 6 of the pouring head 10 towards the distribution chamber 1 via a feed slot 2 is opened.
  • the feed slot 2 of in FIG. 1 featured pouring head 10 has a constant width b over its length and at the inlet end a height h.
  • the height of the feed slot is generally understood to mean the distance between the distribution chamber 1 and the coating surface 6 of the pouring head 10, in each case at the transition to the feed slot 2.
  • the coating mass flows through the distribution chamber 1 from the inlet opening 4 to the outlet opening 5 in the arrow 7 of FIG. 1 indicated direction.
  • the pressure of the coating composition in the distribution chamber 1 exceeds the ambient pressure of the pouring head, so that escapes through the supply gap 2, a portion of the distribution chamber flowing through the coating composition from the distribution chamber 1 to the surface 6 of the pouring head 10 out there and emerging from the gap 2, in of the figure illustrated by arrows 21, coating mass flow generated.
  • the pressure p1 of the coating material at the inlet end 4 of the distribution chamber 1 must be greater than the pressure p2 at the outlet end 5 thereof. From this pressure difference results in a pressure gradient of the coating material along the adjoining the distribution chamber 1 inlet opening of the supply gap 2, wherein the pressure from the inlet end to the expires drain end of the inlet opening decreases.
  • FIG. 2 an applicator 30 using a casting head 10 is illustrated.
  • a film web 32 to be coated is guided around a partial circumference of a rotating roller or roller 31.
  • the direction of rotation of the roller 31 and the direction of movement of the film web 32 are in the figure illustrated by corresponding arrows.
  • the casting head 10 is arranged in the region of the roller 31 looped by the film web 32 at a distance from the film web 32, wherein the coating surface 6 in the illustrated embodiment of the casting head 10 is curved to the diameter of the roller 31.
  • the coating surface 6 referred to in the jargon as G manerlippe can be designed without such a curvature, in other words even.
  • a portion of the coating mass 20 flowing through the distribution chamber 1 passes through the feed gap 2 into the area formed between the coating surface 6 and the surface of the film web 32 lying opposite this.
  • the viscosity of the coating composition 20 the pressure of the coating compound 20 in the distribution chamber and the geometry of the feed gap 2, the area between the surface 6 and the film web 32 becomes only partially or as in FIG FIG. 2 is completely filled by the coating material 20.
  • the wetting meniscus 22 of the coating composition 20 may extend from the outer edge of the surface 6 towards the supplied film web, or be positioned within the area between the surface 6 and the film web 32 as shown.
  • the thickness of the coating material 20 generally tapers to the resulting thickness d of the coating layer 24, so that the coating material 20 also forms a meniscus 23 at this edge.
  • the width of the coating layer 24 substantially corresponds to the length of the feed gap 2, wherein the length of the feed gap 2, as in the FIGS. 1 . 4 and 5 shown is shorter than the length of the distribution chamber between the inlet opening 4 and drain opening 5 may be.
  • the coating thicknesses d achieved in the illustrated arrangement generally have values of about 50 to 100% of the working distance in the case of the coating materials 20 used for forming agent depots.
  • FIG. 3 shows a longitudinal section through an embodiment of a casting head 10 according to FIG. 1 in which the distance of the distribution chamber 1 to the surface 6 and thus the respective height h of the feed gap 2 in the direction of the discharge opening 5 is reduced.
  • the distribution chamber 1 is curved, so that the height of the feed gap 2 from the inlet side 4 to the discharge side 5 decreases non-linearly.
  • a linearization of the pressure drop along the inlet opening of the feed gap 2 and thus of its height h (x) can be achieved in embodiments by changing the cross section of the distribution chamber 1 in the flow direction of the coating mass 20, wherein the distribution chamber cross section for this purpose continuously changing between inlet 4 and drain opening 5 is to execute.
  • the contour of the formed at the transition from distribution chamber 1 to the feed gap 2 edge 8 can be calculated using mathematical models for fluid mechanics of the coating material 20 in the casting head, with known methods of numerical Fluid mechanics such as the finite element method (FEM) can be used. The numerical calculations can be carried out with the help of quantitative experiments.
  • the characteristic of the height profile h (x) which in the present case is a uniform width of the feed gap 2 determined by the contour of the edge 8, can be determined by means of experimental approximation.
  • the reduction of the feed gap height h (x) in the direction of the discharge side of the pouring head 10 results from the fact that the flow resistance a flow channel formed between two parallel walls with a shortening of the flow channel is lower. Because the lower flow resistance at a point of the supply channel ensures that despite the prevailing lower pressure of the coating composition 20 as it enters the supply channel 2 per unit time the same amount of coating material 20 can flow through this point of the supply channel, as in another place, where the coating material penetrates under higher pressure in the feed gap 2, but this has a greater height.
  • the local flow resistance of the feed gap 2 can also be varied over its gap width b.
  • the width of the supply gap 2 in this case increases in the direction of the discharge side of the casting head 10 continuously.
  • FIG. 4 A corresponding embodiment of a feed gap 2 is shown in FIG FIG. 4 illustrated.
  • the width of the supply nip 2 at the coating surface 6 is constant, but increases in the direction Distribution chamber, based on the relative position between the inlet and outlet side to different degrees.
  • the side walls are generally curved to form a uniform coating mass flow 21 along the length of the exit opening of the supply nip 2.
  • the curvature of the sidewalls may be approximated by short contiguous planar sections.
  • the shape of the sidewalls for forming a feed gap 2 having a variable gap width may also be determined experimentally with a numerical modeling as stated above.
  • a varying configuration of the gap height curve h (x) may be combined with a varying configuration of the gap width curve b (x) and b (x, y), respectively, such that a variation of the height-to-width ratio the feed gap along the longitudinal direction receives.
  • a casting head 10 is constructed of two with respect to distribution chamber 1 and feed gap 2 mirror-symmetrically constructed housing parts 3a and 3b, so that the variation of the height-to-width ratio of the feed gap 2 by z. B. corresponding milling of Verteilhunt- and Zubuchspaltrich professionn can be easily realized.
  • FIGS. 6 and 7 is a particularly inexpensive to produce casting head 10 illustrated.
  • the schematic perspective view of FIG. 6 shows the essential components of the casting head in an exploded view; the perspective view of FIG. 7 shows the casting head in assembled condition.
  • the casting head has a first plate-shaped element 60, a second plate-shaped element 61 and an interlayer element 62 referred to as a shim foil.
  • the two plate-shaped elements 60 and 61 are hereinafter referred to as plate.
  • the second plate has a recess 70, the longitudinal ends of which are each arranged at a location which allows fluid communication with apertures 71 and 72 formed in the plate 61 and over their entire cross-section.
  • One of the two openings acts as an inlet opening, the other as a drain opening.
  • the elongate recess 70 forms the distribution chamber.
  • the spacing of the distribution chamber 70 to the leading edge 73 of the second plate 61 varies along the length of the distribution chamber 70.
  • the variation may be linear, partially linear or non-linear as described above.
  • the edge of the distribution chamber 70 facing the plate leading edge 73 forms a straight line in the region provided for the slot nozzle, in the second case a line consisting of a plurality of straight line segments which abut one another at an angle. composed, in the latter case a curved line.
  • the distance of the distribution chamber 70 to the front edge 73 of the second plate has a decreasing in the direction of the drain opening shape.
  • the mop foil 62 is U-shaped so as to cover the area of the side of the second plate 61 facing the first plate 60, which is not used as a side wall of the feed gap 2.
  • the shim foil therefore covers the regions of the distribution chamber 70 which extend from the inlet opening 71 or 72 or the drain opening 72 or 71 up to an edge of the feed gap.
  • corresponding openings 71 and 72 are provided in the shim foil.
  • the first plate in the illustrated embodiment has no structuring of the surfaces with respect to a formation of a part of the distribution chamber. However, in other embodiments, a portion of the distribution chamber may be provided in the first plate 60.
  • the coating composition may be delivered via an opening in one of the two plates 60 or 61 and removed via an opening in the other plate.
  • both plates each have an inlet and a drain opening, so that the inlet and outlet of the coating mass can be carried out in each case through both plates.
  • connection of the two plates 60 and 61 with the intermediate shim foil 62 is preferably carried out by means of releasable fastening means, such. B. with the in FIG. 6 illustrated screws 66 which engage through correspondingly formed in the first plate 60 and the shim 62 holes 65 in threads 67 which are formed in the second plate 61.
  • releasable fastening means such. B. with the in FIG. 6 illustrated screws 66 which engage through correspondingly formed in the first plate 60 and the shim 62 holes 65 in threads 67 which are formed in the second plate 61.
  • FIG. 7 shows the pouring head 10 of FIG. 6 in assembled condition.
  • the two openings 71 and 72 opening into the distribution chamber 70, via which a coating composition is passed through the distribution chamber.
  • a U-shaped course of the coating composition is effected by the casting head 10.
  • the openings 71 and 72 are exactly attached to the respective ends of the distribution chamber 70.
  • the openings 71 and 72 are offset from the respective ends of the distribution chamber 70 in the direction of the center thereof. The offset can be up to 5 mm, without the casting behavior affecting cavities arise.
  • the coating composition is circulated so that it is conveyed from the collecting container back to the reservoir, or the reservoir simultaneously forms the collecting container.
  • both plates at the exit of the feed channel 2 have a projection extending along the length of the feed channel, the width of which is less than the thickness of the respective plate at the leading edge.
  • the casting lip 6 can be designed according to the application conditions of the coating composition.
  • the formation of corresponding projections does not constitute a mandatory embodiment of a casting lip.
  • the width of the feed channel 2 is not determined exclusively by the thickness of the shim foil, but can also be influenced to a certain extent via the tightening torques of the fastening screws or the pressure forces exerted on the arrangement by other suitable fastening means. At higher compressive forces or torques, the shim foil is pressed more strongly and thus results in a relatively narrower supply channel.
  • the width of the feed gap 2, along its longitudinal extent and assuming suitably arranged attachment means can also be varied along the flow direction of the coating agent in the feed gap.
  • FIGS. 6 and 7 illustrated construction of a casting head 10 allows a change in slot length and slot width of the feed gap 2 by simply replacing the shim foil.
  • the cutout in the shim foil is shorter, and in the case of larger ones chosen to be larger, whereby the maximum length of the slot given by the construction of the distribution chamber 70 must not be exceeded.
  • thicker shims are used, or two or more shims are overlaid.
  • the width of the feed gap can be determined by the dimension of the shim foil.
  • the thickness of the shim foil or the thickness of a shim foil stack is less than 3 mm in embodiments, less than 2 mm in preferred embodiments and less than 1 mm in particularly preferred embodiments.
  • pouring head 10 can be quickly disassembled and cleaned, so that the necessary when changing the coating material changeover time can be kept low.
  • a casting head as described above is flowed through with a coating composition.
  • the coating composition preferably completely fills the cavity in the casting head, which is in communication with the openings for the inlet and the outlet of the coating compound, but at least as far as possible, in order to prevent the formation of bubbles in the coating.
  • the casting lip of the casting head is arranged in a distance to the film web surface as described above.
  • the coating composition usually consists of one active ingredient-containing matrix material which is diluted in a suitable solvent, for example heptane.
  • the coating composition may be a Newtonian or non-Newtonian liquid.
  • the casting head 10 is flowed through by a non-Newtonian coating composition in order to achieve a uniform application of the non-Newtonian coating composition.
  • a casting head 10 designed as described above, as well as a knife pourer equipped with a corresponding pouring head, it is possible to realize a coating mass flow 21 that is uniform over the length of the outlet opening of the feed gap 2.
  • the exact course of the height-to-width ratio is dependent on this from the flow behavior of the respective coating compound 20, so that a casting head 10 in each case has a profile of the height-to-width ratio adapted to the viscosity range or the flow behavior of a coating composition 20 to be used herewith.
  • Casting heads formed as described are preferably used in the manufacture of transdermal therapeutic systems (TTS).

Landscapes

  • Coating Apparatus (AREA)
  • Polymerisation Methods In General (AREA)
  • Medicinal Preparation (AREA)
EP12772080.3A 2011-09-13 2012-09-11 Messergiesser für hochviskose beschichtungsmassen Active EP2755774B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI201230567A SI2755774T1 (sl) 2011-09-13 2012-09-11 Dozirna naprava za sestavke za oplaščenje z visoko viskoznostjo
RS20160415A RS54836B1 (sr) 2011-09-13 2012-09-11 Dozirni aplikator za visokoviskozne mase za premaz
HRP20160620TT HRP20160620T1 (hr) 2011-09-13 2016-06-07 Mjerni uređaj za prevlačenje za pripravke za premaz velike viskoznosti

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110082630 DE102011082630A1 (de) 2011-09-13 2011-09-13 Messergießer für hochviskose Beschichtungsmassen
PCT/EP2012/067741 WO2013037776A1 (de) 2011-09-13 2012-09-11 Messergiesser für hochviskose beschichtungsmassen

Publications (2)

Publication Number Publication Date
EP2755774A1 EP2755774A1 (de) 2014-07-23
EP2755774B1 true EP2755774B1 (de) 2016-04-27

Family

ID=47016686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12772080.3A Active EP2755774B1 (de) 2011-09-13 2012-09-11 Messergiesser für hochviskose beschichtungsmassen

Country Status (11)

Country Link
EP (1) EP2755774B1 (pt)
DE (1) DE102011082630A1 (pt)
DK (1) DK2755774T3 (pt)
ES (1) ES2575708T3 (pt)
HR (1) HRP20160620T1 (pt)
HU (1) HUE029180T2 (pt)
PL (1) PL2755774T3 (pt)
PT (1) PT2755774E (pt)
RS (1) RS54836B1 (pt)
SI (1) SI2755774T1 (pt)
WO (1) WO2013037776A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6655479B2 (ja) * 2016-06-22 2020-02-26 東レ株式会社 塗布器及び塗布装置
CN108620288B (zh) * 2017-03-22 2020-02-14 深圳市腾盛精密装备股份有限公司 一种点胶高度的补偿方法及装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH597928A5 (en) * 1975-07-24 1978-04-14 Ciba Geigy Ag Cascade distributor head for coating substances
JP2684485B2 (ja) * 1992-02-13 1997-12-03 富士写真フイルム株式会社 塗布装置
JP3205460B2 (ja) * 1994-03-25 2001-09-04 ティーディーケイ株式会社 塗布装置
US5702527A (en) * 1995-02-22 1997-12-30 Minnesota Mining And Manufacturing Company Restricted flow die
JP4040144B2 (ja) * 1996-08-07 2008-01-30 松下電器産業株式会社 塗布装置
US5843530A (en) * 1997-01-21 1998-12-01 Minnesota Mining And Manufacturing Company Method for minimizing waste when coating a fluid with a slide coater
US6813820B2 (en) * 2001-12-19 2004-11-09 3M Innovative Properties Company Method of improving coating uniformity
JP3957640B2 (ja) * 2002-02-21 2007-08-15 アイシン化工株式会社 幅広スリットノズル及び幅広スリットノズルによる塗装方法
EP1663510A1 (en) * 2003-09-17 2006-06-07 3M Innovative Properties Company Methods for forming a coating layer having substantially uniform thickness, and die coaters
JP4185084B2 (ja) * 2005-09-26 2008-11-19 本田技研工業株式会社 水性塗料の塗布方法及び同塗布ノズル
JP4758189B2 (ja) * 2005-09-28 2011-08-24 パナソニック株式会社 ダイ
JP4826320B2 (ja) * 2006-04-07 2011-11-30 大日本印刷株式会社 ダイヘッド
US8092207B2 (en) * 2007-05-03 2012-01-10 Cloeren Incorporated Decoupled transverse flow metering gap and lip gap
JP5090109B2 (ja) * 2007-09-01 2012-12-05 ロンシール工業株式会社 塗布具

Also Published As

Publication number Publication date
PL2755774T3 (pl) 2016-09-30
WO2013037776A1 (de) 2013-03-21
SI2755774T1 (sl) 2016-07-29
HRP20160620T1 (hr) 2016-07-01
DK2755774T3 (en) 2016-06-20
HUE029180T2 (en) 2017-02-28
RS54836B1 (sr) 2016-10-31
PT2755774E (pt) 2016-06-16
EP2755774A1 (de) 2014-07-23
ES2575708T3 (es) 2016-06-30
DE102011082630A1 (de) 2013-03-14

Similar Documents

Publication Publication Date Title
AT394667B (de) Streicheinrichtung
DE69924956T2 (de) Vorrichtung und Verfahren zum streifenförmigen Auftragen von Bechichtungsmaterial
EP0739704B1 (de) Vorrichtung zum Herstellen eines Objektes mittels Stereolithographie
EP0147536B1 (de) Einrichtung zum gleichmässigen Verteilen fliessfähiger Medien in vorgegebener Breite
DE2713453C3 (de) Verfahren und Vorrichtung zum Pastieren eines Gittersubstrats
DE2756133A1 (de) Vorrichtung zum aufbringen einer viskosen fluessigkeit auf einem substrat
WO2010007033A1 (de) Vorrichtung zur klebstoffapplikation
DE3920774A1 (de) Giessvorrichtung zum giessen transparenter kunststoffschichten mit einem eingefaerbten filterband
DE2228685A1 (de) Streichleiste
DE3931793A1 (de) Ein geraet zur beschichtung einer fahrenden bahn
EP2755774B1 (de) Messergiesser für hochviskose beschichtungsmassen
EP2284315A1 (de) Vorhang-Auftragswerk
DE102007020095A1 (de) Vorrichtung und Verfahren zum Schaumauftrag auf Substrate mit großer Breite
DE4402108A1 (de) Maschine zum Streichen einer laufenden Bahn, insbesondere einer Papierbahn
EP2674364B1 (de) Kapillardosierer und Verfahren zum Betrieb eines solchen Kapillardosierers
DE3942590C2 (de) Streicheinrichtung
DD156050A3 (de) Dosiereinrichtung fuer ein farbwerk,insbesondere an offsetdruckmaschinen
DE3612248A1 (de) Streicheinrichtung
EP2017012A2 (de) Vorhangstreichmaschine
EP2975487B1 (de) Vorrichtung zum Dosieren und Mischen zweier fließfähiger Komponenten
DE1965673C3 (de) Verfahren und Vorrichtung zum Herstellen von Schaumstoffprodukten aus einem flüssigen Gemisch miteinander reaktonsfähiger Materialien
WO2010063429A1 (de) Vorrichtung zum beschichten von bahnförmigen materialien
DE3232388A1 (de) Vorrichtung zum auftragen viskoser substanzen auf in bewegung befindliches, bandfoermiges material
WO2007101752A1 (de) Extruder-/spritzgiessschnecke
DE4404446C2 (de) Vorrichtung zum Ausgeben von Flüssigkeiten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140317

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20151006

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BAYER PHARMA AKTIENGESELLSCHAFT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BAYER PHARMA AKTIENGESELLSCHAFT

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 794132

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160515

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: HR

Ref legal event code: TUEP

Ref document number: P20160620

Country of ref document: HR

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502012006948

Country of ref document: DE

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20160608

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20160617

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2575708

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20160630

REG Reference to a national code

Ref country code: HR

Ref legal event code: T1PR

Ref document number: P20160620

Country of ref document: HR

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20160427

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

REG Reference to a national code

Ref country code: EE

Ref legal event code: FG4A

Ref document number: E012175

Country of ref document: EE

Effective date: 20160715

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 21109

Country of ref document: SK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160728

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502012006948

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160427

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E029180

Country of ref document: HU

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160427

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160427

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160427

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20160620

Country of ref document: HR

Payment date: 20180824

Year of fee payment: 7

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502012006948

Country of ref document: DE

Representative=s name: ZEHETNER PATENTANWAELTE, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 502012006948

Country of ref document: DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 502012006948

Country of ref document: DE

Representative=s name: MEINKEN ZEHETNER PATENTANWAELTE, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160427

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: EE

Payment date: 20180831

Year of fee payment: 7

Ref country code: LT

Payment date: 20180904

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CZ

Payment date: 20180828

Year of fee payment: 7

Ref country code: IS

Payment date: 20180823

Year of fee payment: 7

Ref country code: BG

Payment date: 20180831

Year of fee payment: 7

Ref country code: SK

Payment date: 20180903

Year of fee payment: 7

Ref country code: FI

Payment date: 20180910

Year of fee payment: 7

Ref country code: SE

Payment date: 20180910

Year of fee payment: 7

Ref country code: RS

Payment date: 20180906

Year of fee payment: 7

Ref country code: TR

Payment date: 20180906

Year of fee payment: 7

Ref country code: DK

Payment date: 20180911

Year of fee payment: 7

Ref country code: HR

Payment date: 20180824

Year of fee payment: 7

Ref country code: HU

Payment date: 20180906

Year of fee payment: 7

Ref country code: SI

Payment date: 20180831

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20180910

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MT

Payment date: 20180918

Year of fee payment: 7

REG Reference to a national code

Representative=s name: ZEHETNER PATENTANWAELTE, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 502012006948

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502012006948

Country of ref document: DE

Representative=s name: ZEHETNER PATENTANWAELTE, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502012006948

Country of ref document: DE

Owner name: LUYE SUPPLY AG, CH

Free format text: FORMER OWNER: BAYER PHARMA AKTIENGESELLSCHAFT, 13353 BERLIN, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502012006948

Country of ref document: DE

Owner name: LUYE PHARMA SWITZERLAND AG, CH

Free format text: FORMER OWNER: BAYER PHARMA AKTIENGESELLSCHAFT, 13353 BERLIN, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502012006948

Country of ref document: DE

Representative=s name: ZEHETNER PATENTANWAELTE, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502012006948

Country of ref document: DE

Owner name: LUYE PHARMA SWITZERLAND AG, CH

Free format text: FORMER OWNER: LUYE SUPPLY AG, BASEL, CH

REG Reference to a national code

Ref country code: HR

Ref legal event code: PBON

Ref document number: P20160620

Country of ref document: HR

Effective date: 20190911

REG Reference to a national code

Ref country code: EE

Ref legal event code: MM4A

Ref document number: E012175

Country of ref document: EE

Effective date: 20190930

REG Reference to a national code

Ref country code: FI

Ref legal event code: MAE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20190930

Ref country code: LT

Ref legal event code: MM4D

Effective date: 20190911

Ref country code: NO

Ref legal event code: MMEP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190912

Ref country code: LV

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200311

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

Ref country code: RS

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200316

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 21109

Country of ref document: SK

Effective date: 20190911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

Ref country code: EE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

Ref country code: NO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 794132

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190912

Ref country code: HU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190912

Ref country code: BG

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200531

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

Ref country code: HR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20200724

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190911

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20230920

Year of fee payment: 12

Ref country code: IE

Payment date: 20230920

Year of fee payment: 12

Ref country code: GB

Payment date: 20230920

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230928

Year of fee payment: 12

Ref country code: DE

Payment date: 20230930

Year of fee payment: 12

Ref country code: BE

Payment date: 20230920

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20231124

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230927

Year of fee payment: 12

Ref country code: CH

Payment date: 20231001

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502012006948

Country of ref document: DE

Representative=s name: ZEHETNER, ANDREA, DIPL.-CHEM. UNIV. DR. RER. N, DE