EP0221932B2 - Procede et dispositif pour appliquer des substances liquides, eventuellement mousseuses, d'impregnation et/ou de revetement - Google Patents

Procede et dispositif pour appliquer des substances liquides, eventuellement mousseuses, d'impregnation et/ou de revetement Download PDF

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Publication number
EP0221932B2
EP0221932B2 EP86902767A EP86902767A EP0221932B2 EP 0221932 B2 EP0221932 B2 EP 0221932B2 EP 86902767 A EP86902767 A EP 86902767A EP 86902767 A EP86902767 A EP 86902767A EP 0221932 B2 EP0221932 B2 EP 0221932B2
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EP
European Patent Office
Prior art keywords
application
substrate
substance
applicator
outlet orifice
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EP86902767A
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German (de)
English (en)
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EP0221932B1 (fr
EP0221932A1 (fr
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Johannes Zimmer
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Individual
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Individual
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    • 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
    • B05C5/0295—Floating coating heads or nozzles
    • 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
    • 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
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a device is known from US-A-4 090 469.
  • a web of material is guided over part of the circumference of a roller, this roller being brought into a predetermined position via a swivel arm and a hydraulic cylinder.
  • the application device with its outlet opening and the application surface is brought into a certain position via a swivel arm and a hydraulic cylinder, the distance between the roller surface and the outlet opening being arbitrarily determined and thus also the thickness of the layer applied to the web.
  • application doctor blades both coating gap doctor blades and thin-coating or impregnating air doctor blades, are arranged rigidly (stationary); this also applies to the aforementioned US-A-4 090 469.
  • the profile shapes are different; in general, the doctor blade profiles are relatively narrow, this is because otherwise the application surface pressure would be too high.
  • coating and impregnating doctor blade devices have to be dimensioned very vigorously even with a relatively small width of the profile surface causing the application, and accordingly have to be dimensioned in terms of material and cost.
  • the coating or impregnating doctor blades are usually attached at both ends or stationary or in relation to the position of the web to be coated mounted precisely adjustable, whereby great stability against deflection or the possibility of correcting unavoidable deflection phenomena must be taken into account in the design.
  • an aqueous liquid substance is to be applied in an amount of 50 g / m 2 , this corresponds to a layer thickness of 5/100, ie five hundredths of a millimeter. If this application is to be carried out with an application accuracy of plus / minus 10%, this corresponds to the amount plus / minus 5 grams and the layer thickness plus / minus 5/1000 mm. Since the application widths are usually about 2 to 3 m and more in practice, the requirements for the stability and processing and setting accuracy of such devices are very high. Each application process creates or makes an application print dependent on various parameters. Since its size cannot be calculated in advance, almost every application process requires readjustments on the squeegee device. It is therefore obvious to keep the edges or surfaces of the doctor blade profiles that cause the application process and thus exposed to the application pressure as narrow as possible (the doctor blade knife commonly used in practice makes this clear).
  • the present invention excludes all of the aforementioned disadvantages and moreover has some advantages which are unknown or unthinkable according to the prior art, such as e.g. full security against the risk of bending at any working width and the automatic adjustment of the optimal gap thickness in accordance with the respective application conditions, whereby the surface pressure of the application device can be adjusted as required and can also be changed during the application process, without thereby reducing the straightness of the application device or the Application uniformity across the entire web width at risk.
  • the device according to the invention based on an area unit, works with a considerably lower application pressure than the previously known application doctor blades, but this application pressure, due to the large width of the effective application area or surface-parallel or approximately surface-parallel arrangement of the application surface and the surface to be applied results in a relatively high total application force which, due to the substance layer located between the two surfaces, causes an effect which can be referred to as "swimming"; the application area of the device according to the invention which brings about the application and uniformity effect can float freely on the area to be applied or, if the application device is arranged in a fixed position, the sheet-like material web pressed onto the device can float on the application area.
  • the device according to the invention makes it possible to handle a large number of different high-quality applications with the same device, only the setting parameters being changed, if need be.
  • the adjustability is mechanical effective application force, i.e. surface contact pressure of the application surface on the substance layer and through it acting on the material web to be applied, of particular importance, because in this way the depth of penetration in the case of impregnating applications and the uniformity of the layer to be applied and the intensity of the connection of the substance to be applied with coating applications the material surface can be controlled very effectively.
  • This control option is of great importance and has a positive effect, especially for applications with a combined effect, in which a certain amount of substance is pressed in to a certain depth and also a certain amount of substance is to be applied to the surface to coat it.
  • the possibility with the device according to the invention of being able to increase or change the working pressure of the application area, preferably with the device's own weight, during a running application process by means of magnetic technology, has a favorable effect on fine corrections for optimizing the respectively required application results.
  • the outlet opening of the device according to the invention does not necessarily have to be designed as a continuous outlet gap, but can also consist of closely adjoining or overlapping tubular, channel-shaped or slit-shaped outlet openings, bores or the like, especially in the case of low-viscosity application substances.
  • the risk of a strip-shaped application resulting from strip-shaped substance outlet is relatively low.
  • the possibility provided according to the invention of arranging the application surface at a slight inclination deviating from the parallelism of the surface and, seen in the direction of movement, of having a flat wedge gap tapering in the application process has a beneficial effect on applications on voluminous material for the gradual penetration of the substance under a gently acting surface pressure. If the application surface, which is inclined and forms a tapering wedge gap, is dimensioned very generously in length (viewed in the direction of movement), then a relatively thick or voluminous and relatively less absorbent material web can also be impregnated with full penetration.
  • the extension of the application area can also be understood as an extension of the exposure time of the application pressure caused by the application area.
  • Some material webs sometimes have thick spots or foreign body inclusions that stick to the conventional doctor blades that are set in a narrow gap or with pressure and can therefore cause web tears.
  • the wedge-shaped inclination of the application surface and also the contact surface which is optionally arranged in the area in front of the outlet slot and possibly forms a somewhat wider gap, has a risk-reducing effect.
  • the wedge gap which is open to the front, in particular the foremost part (contact surface), also has a favorable effect on applications on very thick or voluminous material.
  • FIG. 1 shows the application device with a concave application surface
  • FIG. 2 shows another exemplary embodiment, the application surface being flat
  • FIG. 3 shows a further exemplary embodiment, also with a flat application surface
  • FIG 4 shows an embodiment with a convex application surface
  • FIGS. 5 to 9 are further possibilities for carrying out the invention
  • FIG. 10 shows a special embodiment in which two application devices are present.
  • 11 shows a further embodiment of the invention.
  • FIG. 1 shows the application device 1, which is fastened via a rotatable fastening 2 by means of a connection 3 to a pivot point or pivot axis 4 which is mounted in a fixed position and, if appropriate, can be ascertained thereon.
  • the two arrows 5a and 5b show the possibility of pivoting the device 1, the arrow 6 shows the possibility of pivoting the device 1 around the attachment 2.
  • the device 1 in the embodiment according to FIG. 1 has a closed cavity 7 in its interior for the application substance with a Connection option 8 for the substance supply from the outside.
  • the application substance reaches the application area from the cavity 7 via an outlet opening 9, which can be formed by a gap or channels lying closely next to one another.
  • the preferably gap-shaped and extending over the entire application width outlet opening 9 is surrounded or limited by a nozzle body 10 designed according to the invention, which has sections 10a and 10b and whose underside the gap edges or the web 14 to be commissioned facing surfaces 11a and 11b.
  • the device 1 rests with its own weight, which may be by additional aids such as Weighting can be reinforced by a weight bar 12 attached to it.
  • This weight bar 12 can consist of magnetizable material, so that the contact force of the device 1, in particular the surface 11b, can additionally be increased by magnetic force caused by the magnet 13.
  • the surface or material web 14 to be applied is fed to the application device 1 in the direction of movement 15 by means of a counter roller 16 which rotates about an axis 17, it being possible to use a conveyor belt 18 as an aid for the transport of the material web 14 to use.
  • the device 1 and the counter roller 16 are arranged axially parallel to one another, accordingly the roller jacket or the material web 14 to be applied is also parallel to the surface in the axial direction and, viewed in the direction of movement, with a slight inclination, forming a flat wedge gap converging in the direction of movement, approximately parallel to one another arranged.
  • the device 1 In the idle state, the device 1 can rest against the material web 14 with the outermost end of its application surface 11b, as seen in the direction of movement. These concerns can also be maintained in the operating state if impregnating application is desired and the contact force is sufficiently large.
  • the device 1 begins to float with its application surface 11b on the substance layer located in a wedge-shaped layer between the application surface 11b and the material web 14, as a result of which the substance layer is distributed uniformly over the width of the material web 14 and one of them Strength of the substance corresponding gap is formed.
  • Reference numeral 20 indicates that the device 1 can be changed in any direction via the pivot point or the pivot axis 4 while maintaining the parallel adjustment of this axis 4 to the roller axis 17 in any direction.
  • This setting option supplements the existing setting option by pivoting around the attachment 2.
  • the gap height as the most important application parameter is set beforehand and has a determining effect on the application quantity or layer thickness to be applied, which corresponds to the state of the art and works by means of a gap
  • the application quantity is mainly determined by the substance supply system and the application area 11b or its end region is only used for the equalization or injection of the substance or the optimal connection of the substance to the web, and in the case of coating application for smoothing the surface of the substance.
  • the device 1 according to the invention or its application-active surface 11b can be optimally adapted to any application requirement by shaping this surface, by the pivoting of the device around the attachment 2, by, in the direction of movement, sufficient length dimensioning of the application surface 11b and by setting the most favorable contact pressure .
  • the depth of penetration of the substance into the web 14 can be determined optimally, ie for applications for which an impregnating effect is desired, whereas in the case of applications which are intended to have a coating effect, undesired penetration of substances is prevented and the layer thickness is determined can; in any case, ie, regardless of whether the application is impregnating or coating or a combination of both, the application quantity can be set precisely and reproducibly using the setting parameters according to the invention.
  • the device according to the invention allows a differentiation between the liquid pressure which can be determined by the substance supply system and that which can be determined by the formal design, by the dimensioning of the application surface 11b and by the contact pressure of the device 1 or the application surface 11b against the material web surface to be ordered or against the substance layer located therebetween Application pressure caused by the application device.
  • FIGS. 2 to 5 show further embodiment variants of the device according to the invention, in which the substance space 7 is drawn in a trough-shaped manner open upwards or torn off above. If the substance is supplied from an open trough, the liquid pressure of the supply system acting on the application area is determined by the fill level, by the dimensioning of the outlet area and by the viscosity of the application substance.
  • the variant shown in Fig. 2 is characterized by a flat design of the parts 10a and 10b or the surfaces 11a and 11b. 2, a counter-roller 16 with a preferably large diameter is used, as a result of which, parallel to the surface, a wedge gap between the surfaces 11a and 11b of the device 1 and the surface of the counter-roller 16 has a similarly shaped wedge gap with the same function as in FIG Fig. 1 shown and described, arises.
  • the web 14 was not shown in Fig. 2 to indicate that the device according to the invention also enables indirect-acting applications, which means that a substance layer is first applied to a sheet-like carrier (e.g. roller or conveyor belt) and from there to the web is applied.
  • a sheet-like carrier e.g. roller or conveyor belt
  • FIG. 3 differs from that previously described in that instead of a counter roller 16, a sliding table 16a is used, in which a magnet system 13a can be installed.
  • a possibly elastic conveyor belt 18a slides over the sliding table, on which the material web 14 to be ordered rests or is temporarily fastened.
  • the end region 19a of the application surface 11b is configured with sharp edges in this variant of the device 1.
  • the parts 10a and 10b or their surfaces 11a and 11b facing the web are convexly curved outwards.
  • the application area 11b is in its front, on the outlet opening 9 adjoining area is stepped, that is to say set back against the surface 11a. This is necessary in view of the fact that the web 14, which is flexible, continues to rest against the surface 11a even in the operating state.
  • the markings according to the invention are essentially concentrated on the application surface 11b and are also fully preserved in this embodiment variant according to FIG. 4.
  • the end region 19b of the application surface 11b is formed at an acute angle.
  • the surface 11a is additionally loaded during a pivoting in the direction 6a and the surface 11b is relieved by the same amount.
  • an opposite change in load occurs.
  • FIG. 5 shows a device 1 according to the invention combined from the characteristic shaped elements already contained in FIGS. 1 to 4.
  • the application surface 11b is stepped back against the surface 11a and, in addition, is also stepped obliquely in itself.
  • FIG. 6 shows a further combination variant of a device 1 according to the invention, the characteristic details of which have already been described in earlier drawings.
  • the web 14 is guided over two rollers 21 and 22, possibly lying on an endless conveyor belt 18, which was only partially shown in the drawing.
  • FIG. 7 shows a further embodiment variant of the device according to the invention, the cavity 7 of the device 1 being divided into an upper region 7a and a lower region 7b, which can be pressurized by the toothed roller pumps 23a and 23b.
  • the closed cavity 7b merges into the outlet opening 9, through which the application substance is pressed out, the pressure generated by the pump system and the movement of the roller 16 or a fabric web lying thereon, not shown in this figure, into the area between the roller surface 16 and surface 11b arrives.
  • Fig. 8 shows an application device 1 essentially, as already shown and described, and an application device 1a opposite this, which is connected in this example to a cylindrical, high sliding body 16b, the shape of which matches the application device 1.
  • the web 14 slides over the fixedly arranged sliding body 16b.
  • Conveyor belt 18 are used for a material web 14 that is sensitive to the substance.
  • the two application devices 1 and 1a can be supplied by separate delivery systems which together convey the desired total application amount, or both application devices 1 and 1a can be supplied by a common substance delivery system which delivers the total amount to be applied on both sides, either by additional aids or automatically , by pressure equalization, is distributed to both devices.
  • FIG. 9 shows a device 1 according to the invention, which rests on a counter roller 16, this counter roller 16, which has a relatively large diameter, being provided with a relatively soft, pressure-elastic covering 24.
  • the device marking according to the invention is achieved by pressing the device 1 against the rotating roller 16 and by deforming the soft roller covering 24.
  • FIGS. 4 and 6 show a variant or a device according to the invention, which is applied on both sides and, similarly to FIGS. 4 and 6, fabric webs 14 freely guided past it.
  • the arrow 25 shows the direction of movement of the fabric web
  • the arrow 26 shows the tensile forces
  • Arrow 27 shows the forces counteracting the tensile forces.
  • FIG. 10 only the outlet openings 9 and the parts 10 or 10a and 10b surrounding them and causing the application process are shown with the surfaces 11a and 11b facing the web 14.
  • each of the devices according to the invention arranged on both sides of the web both generates the double-acting application pressure and also absorbs the application back pressure of the opposite application device.
  • the web is passed in a flat S-shaped curve between the two application devices or their surface pairs 11a and 11b.
  • the variant shown in Fig. 10 is additionally characterized in that in the same application device either one of the two surfaces 11a or 11b can be concavely curved and the other surface 11b or 11a can be convexly curved, the two surfaces with the intermediate outlet opening 9 in the same plane or can be staggered in a step-like manner.
  • the two outlet openings 9 can, as shown, be offset from one another or arranged exactly opposite one another.
  • Fig. 10 the goods routing is drawn vertically, but it is possible in any spatial arrangement, provided that the cavities 7 are designed according to the spatial arrangements or in a closed design.
  • Another marking according to the invention is whether, in the case of application on both sides, both devices are designed to be freely movable relative to one another or one is stationary and the other is movable.
  • a further, according to the invention, among other things, still possible, new equipment-technical embodiment variant in connection with the application of foamed substances is that both with coating as well as with impregnating applications, the application quantity and possibly also the penetration depth of the substance only by changing the substance content, i.e. the amount of liquid mixed into the application foam can be determined.
  • the air pressure of the foam generation system or the resulting foam pressure can also be used to control the penetration depth.
  • the process technology or application device according to the invention offers the possibility, unknown to the prior art, to achieve differently large application quantities or different penetration depths with only one application device and with the same setting of this device, only by changing the foam density and possibly also the foam pressure can.
  • a further variant consists in a one arranged on both sides according to FIG. 10 Feed device from one side of the substance and air from the other side, so that this creates an air cushion which favors the sliding of the material web.
  • This variant is preferably intended for coating applications of air-impermeable material; in the case of impregnating application on air-permeable material, it is also possible, instead of blowing air in on the back, to draw air out of the back, in order to promote the penetration of the substance.
  • an air extraction zone and an air injection zone or substance application zone one behind the other in succession.
  • Another additional identification of the invention consists in the fact that the contact surface 11a is not only curved, but also has profiles which have a spreading effect on the inlet side.
  • the application device can be in a range from exactly parallel to a flat inclined position, e.g. up to about 5 °.
  • the convex-shaped application surface acts similar to a so-called air knife, but offers the additional advantage over the air knife that the application performance is not as dependent on the fabric tension as is the case with the air knife, because the device according to the invention has its own weight or is additionally weight-loaded or relieved, freely laid on the material web to be ordered and can also be used as a tension regulator.
  • the device according to the invention has its own weight or is additionally weight-loaded or relieved, freely laid on the material web to be ordered and can also be used as a tension regulator.
  • there is also no danger that voltage differences lead to differences in the application mainly because the application substance can be dosed in accordance with the invention.
  • FIG. 11 shows an application device 30, which cooperates here with a magnetic roller 34 as the counter surface.
  • a roller 34 e.g. an endless conveyor belt, can be used, the material web to be commissioned lying either directly or indirectly via the conveyor belt on a flat or possibly curved table surface, into which a magnet is inserted or under which a magnet is arranged.
  • the application device 30 which extends over the respective application width, consists of a part 31, preferably plate-shaped in the direction of movement, a rear part 32, as seen in the direction of movement, and a part 33 connecting these two parts 31, 32. As already mentioned, it acts this application device 30 together with a counter roller 34, the direction of rotation is indicated by the arrow 35.
  • the three device parts 31, 32, 33 are connected to one another in a sealing manner by means of the screws 40, thereby creating a Cavity 41 is formed, which is fed through one or more openings 50 with pressurized application substance.
  • the cavity 41 merges in a funnel shape into a nozzle gap 42, from which the application medium can emerge in uniform quantities, overcoming the counterpressure formed by the application device. When exiting the nozzle gap 42, the application substance comes into contact with the material web 36.
  • the two front ends of the application device 30 are each sealed with an end plate or approximately sealed against the material web 36 to be applied or the roller or the conveyor belt or the table.
  • the shape of the end plates corresponds to the device parts 31, 32, 33, but the two end plates project slightly beyond the application area 48 in the application areas 50 and 37.
  • the application surface 48, which extends over a part 50 of the application device 30, has the effect that the liquid pressure of the leaked substance is maintained in this area or is possibly increased by the additional dynamic forces arising from the kinetic energy and only from this flat closed cavity against the material web 36 or can be broken down or partially broken down by any penetration into the material web 36.
  • the application surface 48 ends at a recess 44 in which a roller 43 is arranged in the manner of a slide bearing and rotates according to the arrow 45.
  • This roller 43 is made of a magnetizable material and preferably has a length that corresponds to the application width, but can also be greater than this.
  • This roller 43 is opposed to a magnet or a magnetic strip 46, as a result of which the roller can be pressed onto the material web 36 with a force P which can be adapted to the application requirement.
  • the application surface 48 and also the roller 43 not only cause the substance to be pressed in or pressed in, but also to maintain the flow through the supply system or the nozzle outlet gap 42 predetermined uniformity of width distribution and even improve this width distribution, in addition to strengthening the connection between the material web and the application substance, the surface being evened out or smoothed.
  • the part 32 of the application device 30, viewed in the direction of movement, has a further region 38 to the two regions 50 and 37.
  • This region 38 can also be subdivided into subsections a, b, c.
  • the lower surface 47 of this area 38 can be arranged either parallel in width and length or only in width parallel to the material web 36 or its base, or can be designed or arranged such that between the surface 47 and the material web 36 a weakly wedge-shaped flat cavity is formed, the tip of which is assigned to subsection c and the largest extent of which is subsection a.
  • the application device 30 When the application penetrates fully into the web 36, the application device 30 rests in the subsection c with adjustable weight on the web 36, in the case of coating or combined penetration and coating application, a layer of substance remains on the surface of the product after leaving the application areas 50 and 37 Surface 47, and in particular its last sub-area c is finally made uniform, whereby the application device 30 in the area 38 or the subsection c can no longer touch the structure of the web 36 introduced into the application device 30 in the area of the part 31, but on the surface the substance layer located on the application side of the material web 36 virtually floats.
  • the part 32 can also be produced from magnetizable material and, either additionally or also instead of the roller 43, can effect or increase the contact force of the application device 30 via its part 32 by means of magnetic force. It is possible to press both the roller 43 and the application device 30 independently of one another. It is also possible to dispense with the roller 43 and then to apply magnetic force to the freely movable application device 30 via its part 32.
  • the cavity 44 remaining due to the omission of the roller 43 can then have another auxiliary function, such as fiber or foreign matter removal using a vacuum or heat shock using an infrared heating rod, to name just two examples.
  • the cavity can also be closed with a thin wall against the material web 36 and accommodate a heating or cooling medium.
  • the vacuum zone can be preceded by a magnetic roller pressure similar to that in part 32, which can make a further contribution to quality improvement by compressed venting and sealing of the suction area.
  • the pressure roller 43 attached in the part 32 can also be provided with a structured surface to improve and even out certain, in particular impregnating, applications, e.g. with axially or diagonally grooved or with cup-like depressions.
  • application area 48 can be both wider and narrower, as drawn in FIG. 11.
  • the invention is not limited to the examples shown; any spatial arrangement of the device parts is possible and the application device can also be doubled, which is particularly advantageous in the case of double-sided application. Both application devices can work without contact with the areas to be applied.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Dans le procédé et le dispositif pour appliquer des substances liquides, éventuellement mousseuses, d'imprégnation et/ou de revêtement, les parties du dispositif (10a, 10b) effectuant l'opération de revêtement sont montées flottantes et forment une surface approximativement parallèle à la surface à revêtir (14). Entre le dispositif de revêtement (1) et la surface à revêtir (14) une pression hydrostatique est exercée afin de produire un effet d'imprégnation respectivement d'homogénéisation de la couche de revêtement.

Claims (12)

  1. Dispositif (1, 30) comportant un orifice de sortie (9, 42) pour l'application de substances liquides, le cas échéant, mousseuses de viscosité et d'épaisseur arbitraires, sur des substrats (19) de surfaces planes ou bombées comme p.ex. laizes de matériaux planiformes (14, 36), étant prédisposé à l'orifice de sortie (9, 42) une surface de rapprochement (11a), vue dans le sens de deplacement (15, 35) du substrat (19) une surface d'application (11b; 47, 48) est adjacente à l'orifice de sortie (9) et s'étend approximativement parallèle au substrat (19) resp. support de substrat (18) et, selon les conditions opératives (état de fonctionnement) une fente d'application est ajustable entre la surface d'application (11b; 47, 48) et le substrat (19), caracterisé en ce que la surface d'application (11b; 47, 48) laquelle en sens de mouvement est adjacente à l'orifice de sortie (9, 42) est configurée, en relation à l'envergure ou taille de l'orifice de sortie (9) à titre de long(ue), dans le sens du mouvement s'étendant section d'application, qui, sous la force de gravité du dispositif ou par forces additionnelles exercées moyennant moyens auxiliaires soit mécaniques ou magnétiques se pose librement sur le substrat (19)et à partir de cette position se trouve librement disposée, mouvable flottant, contre lesdites forces, le cas échéant sur une couche de substrat , dont l'épaisseur, pendant le fonctionnement (lors de la production) s'adapte automatiquement aux conditions respectives, étant formé, dans la libre position de pose sur le substrat (19) au moins une, de la parallèlité de surface en légère inclination se déviant, plane fente ou angle conique d'application confluant en sens de mouvement du substrat.
  2. Dispositif selon la revendication 1 caractérisé en ce que les parties (10a) du dispositif d'enduction (1) qui, vues dans le sens de déplacement (15), sont situées devant l'orifice de sortie (9), sont planiformes ou approximativement parallèles à la surface à enduire, que celles-ci soient concave, convexe ou plane, et que la surface (11a) devant l'ouverture de sortie (9) est desaxée par échelons par rapport à la surface d'enduction (11b).
  3. Dispositif selon la revendication 1, caractérisé en ce que le dispositif (1) n'entre pas en contact avec la surface du substrat (19) en cas d'application d'un revetement .
  4. Dispositif selon la revendication 1 caractérisé en ce que la surface d'enduction (11b) entre en contact avec le substrat (19) en cas d'application d'une couche de revete-ment mince et/ou d'imprégnation dans la zone d'extremité (vue dans le sens de deplacement).
  5. Dispositif selon l'une des revendications précedentes, caractérisé en ce qu'une reglette de poids (12) de préférence en matériau magnétisable, est appliquée sur le dispositif d'enduction (1).
  6. Dispositif selon la revendication 5, caractérisé en ce que la partie (10b) portant la surface d'enduction (11b) se compose au moins partiellement d'un matériau magnétisable.
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la surface d'enduction (11b) est de forme convexe ou concave .
  8. Dispositif selon l'une des revendications précédentes, caracterisé en ce que la surface d'enduction (11b) est plane.
  9. Dispositif selon l'une des revendications précédentes, caractérisé en ce que, dans le cas d'application sans contre-rouleau (16) ni table de travail, le poids d'appui du dispositif d'enduction (1) est utilisé simultanément pour établir ou pour commander la tension exercée sur la nappe.
  10. Dispositif selon l'une des revendications précédentes, caractérisé en ce que pour réaliser une application sur les deux cotés, la nappe d'étoffe planiforme (14) est passée, en formant une courbe en forme de S plat, entre deux dispositifs d'enduction (1a, 1b) respectivement entre la paire de surfaces d'enduction (11a, 11b).
  11. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la surface d'application (11a) située devant l'orifice de sortie (9) peut-etre courbe, mais également presenter des profils ou structurations (formes) agissant en tant qu'élargisseur du support enduit.
  12. Dispositif selon l'une des revendications précédentes, caractérisé en ce que dans la surface d'appui (48) est usiné un évidement (44) dans lequel un rouleau (43) en matériau magnétisable est inséré de manière analogue à un palier à glissement, et que le rouleau 843) pressé magnétiquement fait pénétrer par pression la substance, qui se trouve le cas échéant sous effet d'une pression amplifiée du fait de la surface d'application (48).
EP86902767A 1985-05-08 1986-05-06 Procede et dispositif pour appliquer des substances liquides, eventuellement mousseuses, d'impregnation et/ou de revetement Expired - Lifetime EP0221932B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1390/85 1985-05-08
AT0139085A AT386762B (de) 1985-05-08 1985-05-08 Verfahren und vorrichtung zum impraegnierenden und/oder beschichtenden auftragen auf eine warenbahn
PCT/AT1986/000040 WO1986006656A1 (fr) 1985-05-08 1986-05-06 Procede et dispositif pour appliquer des substances liquides, eventuellement mousseuses, d'impregnation et/ou de revetement

Publications (3)

Publication Number Publication Date
EP0221932A1 EP0221932A1 (fr) 1987-05-20
EP0221932B1 EP0221932B1 (fr) 1990-10-31
EP0221932B2 true EP0221932B2 (fr) 1996-07-31

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EP86902767A Expired - Lifetime EP0221932B2 (fr) 1985-05-08 1986-05-06 Procede et dispositif pour appliquer des substances liquides, eventuellement mousseuses, d'impregnation et/ou de revetement

Country Status (7)

Country Link
US (1) US4943451A (fr)
EP (1) EP0221932B2 (fr)
JP (1) JPS62503019A (fr)
AT (1) AT386762B (fr)
BR (1) BR8606664A (fr)
DE (1) DE3675333D1 (fr)
WO (1) WO1986006656A1 (fr)

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Also Published As

Publication number Publication date
DE3675333D1 (de) 1990-12-06
EP0221932B1 (fr) 1990-10-31
EP0221932A1 (fr) 1987-05-20
ATA139085A (de) 1988-03-15
WO1986006656A1 (fr) 1986-11-20
AT386762B (de) 1988-10-10
US4943451A (en) 1990-07-24
JPS62503019A (ja) 1987-12-03
BR8606664A (pt) 1987-08-11

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