EP0108274A1 - Installation permettant d'apporter une mousse et d'en enduire une bande textile - Google Patents

Installation permettant d'apporter une mousse et d'en enduire une bande textile Download PDF

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Publication number
EP0108274A1
EP0108274A1 EP83110119A EP83110119A EP0108274A1 EP 0108274 A1 EP0108274 A1 EP 0108274A1 EP 83110119 A EP83110119 A EP 83110119A EP 83110119 A EP83110119 A EP 83110119A EP 0108274 A1 EP0108274 A1 EP 0108274A1
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EP
European Patent Office
Prior art keywords
slot
distribution body
application
foam
distribution
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.)
Withdrawn
Application number
EP83110119A
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German (de)
English (en)
Inventor
Mathias Mitter
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.)
Ramisch Kleinewefers GmbH
Original Assignee
Ramisch Kleinewefers GmbH
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
Priority claimed from DE19823238084 external-priority patent/DE3238084A1/de
Application filed by Ramisch Kleinewefers GmbH filed Critical Ramisch Kleinewefers GmbH
Publication of EP0108274A1 publication Critical patent/EP0108274A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0088—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor
    • D06B19/0094—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor as a foam

Definitions

  • Device for uniformly feeding, distributing and applying a foamed application fleet to a preferably textile web or the like.
  • the invention relates to a device according to the preamble of claim 1.
  • Such devices are known per se. Such a device is shown and described in DE-OS 25 23 062.
  • This device consists of a foam generator and a feed line to a box-like applicator are disposed in the uftragsflotte for distributing the foamed A transverse, mutually partially overlapping plates.
  • the known device does not enable a distribution in the direct application area, but only the distribution of the foam supplied over the entire application area, the last stumbling stage being at a considerable distance above the application area.
  • the foam supplied drips from the trip level onto the web, with the bottom trip, parallel to the web level prevents foam from getting onto the underlying surface. To achieve this, the box must be filled to at least the upper trip level.
  • a slot doctor blade is already known from US Pat. No. 2,800,075, with which ink can be applied to a web of material through a stencil over a certain working width.
  • the application slot is not continuous, since multi-color printing is desired, but slot doctor blades with a continuous application slot are also known.
  • a slot doctor is an application device, preferably with a doctor housing which is closed on all sides, as is shown in US Pat. No. 2,800,075 in a section within which liquid or pasty, in the present case foamed media are under atmospheric pressure or a higher than atmospheric pressure and the Application device has a.
  • Slit-shaped exit area directed against the web or the template, for applying the medium to flat webs or flat flat parts, preferably with screen printing machines, the screens of which can be patterned or unpatterned, the doctor blade housing with feed pipes or the like. is provided for the medium.
  • the slot doctor blade is adjustable outside the template in doctor blade holders, in particular height adjustable, stored.
  • foam is an extremely inert medium. Foam remains where it is placed and flows away, especially when a relatively high degree of foaming has been achieved, hardly at all.
  • the advantage of the foam application is, however, that relatively small amounts of liquor are given a larger volume by the foaming, so that you can use small amounts of liquor, which are otherwise very difficult to ver divide, can work over a large working width if the inflow of foam takes place over this working width.
  • the problem is to achieve an even distribution of the foam over the entire working width, without the foam being able to escape into areas in which it can get stuck and age there. Old foam has the disadvantage of uncontrolled release and disintegration of liquid, which can lead to irregularities in the printing or dyeing job.
  • the present invention is therefore based on the object directly in or shortly before the application area to provide a stowage and distribution stage for the supplied foam in order to force the foamed medium to flow precisely channeled to the application area, so that a uniform foam application, preferably by a stencil or can be done through a sieve.
  • the foam flowing in from the doctor blade housing is channeled again directly in the area of or in the vicinity of the application slot, that is to say immediately shortly before the application level, and at the same time being brought into motion.
  • the foam in the squeegee is under higher than atmospheric pressure, the pressure over the entire working width is equalized by the distribution body, which at the same time jams a little.
  • the foam is distributed and the "distribution" body also acts as a displacement body.
  • Your foam request can be made through a sieve or through a stencil. It is also possible to apply the foam directly to the substrate. Sieves or stencils can be patterned or unpatterned. When used in screen printing machines or in screen printing-like machines, the subject matter of the invention can be used particularly advantageously, since the non-uniform removal of the foam forces the inflowing foam through the distribution body or displacement body where more foam is consumed.
  • each part can be designed as a precision part, these parts being lined up according to claim 14, which together form an elongated body.
  • These parts can be connected to one another, where they can be attached to the slot doctor blade housing or simply inserted into an extension of the application slot and supported therein on the walls by means of spacers. In order to form a unit, they can be connected to one another, possibly even pressed together from the ends.
  • the device 1 according to the invention for evenly feeding, distributing and applying a foamed application fleet is designed as a slotted doctor blade and, in the embodiment shown, consists of the feed part 10 with its feed tubes 11 and a squeegee foot 12, which is attached to the feed part 10, for example can be fixed by screws 13.
  • the shape of the squeegee 12 adapts to a rotating screen cylinder 2, which can be designed as a screen template.
  • Such screen cylinders are shown and described for example in DE-PS 20 26 492.
  • DE-PS 22 58 892 There is also the possibility of placing this device on a rotating belt template or a rotating screen according to DE-PS 22 58 892.
  • the g srohre by the Zugarun 11 supplied foam is g through a static or dynamic foam enerator211 generated.
  • a static foam generator is shown and described in the aforementioned DE-OS 25 23 062.
  • a dynamic foam generator with a downstream pump is shown in U.S. Patent No. 4,193,762.
  • the foam thus flows through the feed pipes 11 to a respective distributor head 14, crosses narrowed areas 110 inside the pipe-like feed part 10 and reaches the interior 210, which has a large displacement body 15 and smaller displacement bodies 115 can be filled.
  • These smaller displacement bodies 115 are prevented from the lower region by a sieve 215, in which rows of passage cross sections 310 are arranged, for example rows of bores arranged offset from one another.
  • the widened area forms with the distribution body 17, which is approximately teardrop-shaped in cross section, channels 316. It is possible to arrange the distribution body 17 at a distance from the central passage cross sections 3 10 , it always acts as a displacement body.
  • the distribution body has an upper plate-shaped surface 117 and lateral bevels 217 adjoining it, vertical surfaces 317 and surfaces 417 converging at an acute angle, which is shown in more detail in FIG. 3. This is a possible formation of the distribution body. This extends in the form of a bar over the entire working area or over the respective length of the application slot 16 or is composed of sections 16. This distribution body is screwed to the underside of the feed part 10.
  • the supplied foam thus penetrates through the passage cross sections 310, which can be designed as bores, reaches the surface 117 of the distribution body 17, is pushed here to the right and left and reaches the channels 316, which initially run vertically parallel to one another, but then converge. whereby the resulting inflows unite.
  • the channels 316 provided on the side of the distribution bodies correspond in their width summation exactly or approximately to the width of the lower region, that is to say of the narrowed region 116 of the application slot.
  • the application can take place through a sieve or a stencil, e.g. the rotating screen cylinder 2, or directly on the goods 3.
  • the stencils or the cylinders can be patterned or unpatterned and any liquor can be used as the application medium, preferably a dye liquor for dyeing or printing, which is foamed.
  • finishing agents can also be foamed or a fold water. Is essentially thought of foamed paint or dyes or handlun possibly also to any other loading g schemikalien.
  • Material webs with a fibrous structure such as textiles of all kinds, including carpets, pile goods, such as velvet, also nonwovens, but also felts and also nonwovens and paper are suitable as substrates.
  • films and plastics can be coated in such a way, flat products of any kind.
  • the feed part 10 can again be tubular and again has rows of in the lower area and in turn has rows of passage cross sections 310 in the lower area, which can be designed as bores.
  • the application slot 16 again has a narrowed area 116 and an enlarged area 216 with walls 416 tapering towards one another in the lower part, which continue upwards in walls 516 which are parallel to one another.
  • the distribution body 17 can be inserted, which in the exemplary embodiment shown can be rod-shaped or consists of partial sections, as shown in FIG. 4.
  • the distribution body 17 carries rings 517, which serve as spacers.
  • a thread can also be provided instead of the rings.
  • threads have the disadvantage that the distribution of the distribution body 17 into sections according to FIG. 4 is not readily possible. Cutting grooves or leaving rings 517 as spacers is more advantageous.
  • the application slot is again in the squeegee 12th
  • FIG. 3 shows the exemplary embodiment of a distribution body 17 according to FIG. 1 in more detail.
  • the diagram clearly shows the individual surfaces and the possibility of arranging a cylinder head screw bore 617 in order to fasten the rod-shaped distribution body 17 from below in the jacket of the feed part 10.
  • the upper surface 117 can be provided as a baffle and distribution surface.
  • FIG. 4 shows an exemplary embodiment of a distribution body 17 which consists of sections, specifically rod-like sections. These have recesses 717 on one side and elevations 817 on the other side, it being possible to string them together in a kind of tongue and groove connection and to compress them axially from the ends by any means.
  • the individual rod sections 17a, 17b, 17c are axially aligned with one another and, even if they span only a few centimeters, can be put together to form a long device which serves as a distribution body. This training forms many small channels.
  • Fig. 5 the side view of the application device or the slot doctor blade is shown in section.
  • the feed part 10 carries the displacement body 15 on the inside and it can be clearly seen in this figure that the feed tubes 11 are guided to different sections of the overall device.
  • the distributor heads 14 are thus preferably at a uniform distance from one another.
  • the displacement body 15 opens into a foot region 315 at a distance from the region in which the passage cross sections 310 lie.
  • the squeegee 12 has the long inside Distribution body 17 bears with its screw holes 617, which is an embodiment according to the Fig. 1 and 3
  • a b-cut 17a, 17b may be made so forth. These can also be lined up with recesses 717 and elevations 817 if the entire length is not to be used in one piece.
  • the interior 210 of the device is kept closed in the area of the feed part 10 by a side seal 410.
  • the feed pipes 11 can be provided with adjustable valves 111 which change the inflow and can be fed by a single foam generator 211.
  • Distribution bodies 17, for example, are conceivable and possible which have a different cross section than shown and which are equipped with arbitrarily shaped spacers 517.
  • the individual sections 17a, 17b, 17c can also not be provided with slots and webs as elevations and depressions, but rather, for example, with pins and bores. Any other claw connection can also be used. It is very important that allow the individual sections 17a, 17b, 17c to be lined up without changing the cross section. As a result, the separation area lies between the spacers 517 and between the narrow rings, which are provided as circumferential spacers.
  • the idea of the invention is also not limited to a tubular feed part that has a round cross section.
  • the cross section can be rectangular, square, polygon or the like. to get voted.
  • a container holding the foam will always extend over the working width of, for example, 5 meters and more or less.
  • the cross section of the distribution bodies which can also be referred to as displacement bodies, can also be freely selected.
  • the walls of the distribution body 17 which adapt to the walls of the expanded area of the application slot preferably form uniformly running channels which lead to the application area. However, it may also be possible for the channel walls to be designed to narrow or widen in order to brake or accelerate the flow rate of the foam.
  • the round cross section in the embodiment of FIGS. 2 and 4 for the rod-like parts of the or the distribution body 17 is very advantageous because the foam flows past the base part without destroying the bubbles - even through the small channeling through the spacers 517,. are trained, the foam is distributed evenly, evenly and pushed where, for example is increased decreased.
  • the many small flow channels give a strong equalization for the foam. It should not be destroyed in the area of the application slot, but only in or above the template area in order to be applied to the product 3.
  • the device extends over the entire working width. This does not exclude that partial working widths are provided, for example, by slots that are lined up. Furthermore, it is not necessary for the merged area 116 to be very large.
  • the distribution body 17 or the lined-up distribution bodies can be arranged up to just before the application area.
  • FIG. 6 shows a further exemplary embodiment of arranging a distribution body which extends over the working width in the vicinity of the application slot. It has already been mentioned that it is possible that the channel walls should be designed to narrow or widen in order to brake or accelerate the flow rate of the foam. There is therefore also the possibility of designing the channel walls in such a way that they have distribution bodies 17, in that projecting lugs are provided as distribution bodies 17.
  • FIG. 6 shows such an embodiment, wherein one of the channel walls 716 is designed to spring back, namely in a round shape, while the other channel wall 816 carries the molded-on distribution body 17 as a nose.
  • the application slot 16 is thus formed in a zigzag shape.
  • the nose 17 has an impact surface 917 lying transversely to the exit region of the passage cross sections 310.
  • the foam emerging from the passage cross section 310 thus reaches the baffle 917, is distributed thereon and is forced into the application slot 16 and then gets into the oblique calming zone 916.
  • FIG. 6 corresponds essentially and also with respect to the reference numerals to the representations of FIGS. 1 and 5.
  • the device 1 again has a feed part 10.
  • the feed parts 11 are indicated schematically as a single feed tube, and the foam generator is also only indicated.
  • the squeegee 2 is made of rubber-elastic material and has a plastic pad in the lower area, as is known under the trademark "Teflon". These conditions are designated 112 in the drawing.
  • the calming zone 916 of the application slot 16 runs at an acute angle to the inlet side in the direction of the template or rotating screen cylinder 2.
  • a textile web such as carpet or the like
  • an endlessly running printing blanket 4 as is known in screen printing machines.
  • a suction box 5 with a suction slot attachment 50 is arranged below the air-permeable printing blanket 4, which is only indicated.
  • the suction slot opens in length and width, preferably directly below the application slot 16 or the calming zone 916 of the same.
  • the suction box 5 is connected via a line 52 to a vacuum pump 53.
  • FIG. 7 corresponds essentially to the embodiment of FIG. 2.
  • the distribution body 17 is embedded in the squeegee foot 2, which is made of rubber-elastic material and the application slot 16 is also in its design holder for the distribution body 17.
  • Der Distribution body 17 corresponds approximately to the embodiment of FIG. 4. However, it will generally be a continuous rod shape with slightly wider rings 517.
  • the rubber-elastic squeegee foot 2 in turn has plastic pads 112 that have good conductivity.
  • the shape of the squeegee foot 12 is in turn adapted to a circular template, but this is not shown.
  • Fig. 8 an embodiment is shown similar to the embodiment of Fig. 6, but here not a nose shape of the distribution body 17 formed at an acute angle, but a simple projection, which projection is in turn worked out in one piece from the channel wall and again a plate-shaped Surface 117 which also corresponds to the impact surface 917.
  • impact surface is perhaps chosen too strongly, because the foam gets on this surface, becomes resistance here and the strands flowing out of the passage cross sections 310 lose their boundary layers and mix.
  • Fig. 9 it is shown how the foam emerges from the passage cross sections 310 in strands which are absolutely separate from one another, it being necessary for them to unite in order to then be guided back and forth in the meander or zigzag shape of the application slot 16 get the substrate.
  • the design of the foot 12 with plastic pads 112 corresponds to the other exemplary embodiments.
  • the foot is again preferably elastic.
  • FIGS. 10 and 11 show the possibility of not only arranging the distribution bodies 17 in the more or less large application slot 16, but for example directly above the application slot.
  • the distribution bodies 17 are simply rod-shaped.
  • the passage cross-sections or the sewage system then result automatically in relation to the inner lateral surface 510 of the feed part 10, which is again shown as a tube.
  • the application slot 16 is also not provided with bores in the area of the feed part 10, but with a slot-like through opening as a passage cross-section 310, so that after leaving the distribution body 17 and the space between the distribution body 17 and the inner surface area 510 does not form strands, as shown in FIG. 9.
  • the distribution body 17 arranged above the flow cross sections 310 is preferably rod-like and extends over the entire working width.
  • distribution bodies 17 can also be provided here. A plurality of such distribution bodies can be provided above the passage cross sections 310.
  • the idea of the invention is also not limited to the exemplary embodiments shown in FIGS. 6 and 8.
  • the baffles formed by the embodiments can be provided several times, that is to say there can also be a plurality of molded-on distribution bodies 17, which in whole or in part preferably engage under the passage cross sections 310.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP83110119A 1982-10-14 1983-10-11 Installation permettant d'apporter une mousse et d'en enduire une bande textile Withdrawn EP0108274A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19823238084 DE3238084A1 (de) 1982-10-14 1982-10-14 Vorrichtung zum gleichmaessigen zufuehren, verteilen und auftragen einer verschaeumten auftragsflotte auf eine vorzugsweise textile warenbahn od.dgl.
DE3238084 1982-10-14
US49894983A 1983-05-27 1983-05-27
US498949 1995-07-06

Publications (1)

Publication Number Publication Date
EP0108274A1 true EP0108274A1 (fr) 1984-05-16

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EP83110119A Withdrawn EP0108274A1 (fr) 1982-10-14 1983-10-11 Installation permettant d'apporter une mousse et d'en enduire une bande textile

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993005224A2 (fr) * 1991-09-05 1993-03-18 Minnesota Mining And Manufacturing Company Production et application en continu de mousse sur un substrat poreux en mouvement
WO1994013875A1 (fr) * 1991-04-15 1994-06-23 Vidalis, Laura, M., A. Appareil et procede de teinture en continu avec de la mousse

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2053288A1 (fr) * 1969-07-30 1971-04-16 Bleiche Ag
US3610201A (en) * 1969-04-21 1971-10-05 Anetsberger Bros Inc Viscous material spreader

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610201A (en) * 1969-04-21 1971-10-05 Anetsberger Bros Inc Viscous material spreader
FR2053288A1 (fr) * 1969-07-30 1971-04-16 Bleiche Ag

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994013875A1 (fr) * 1991-04-15 1994-06-23 Vidalis, Laura, M., A. Appareil et procede de teinture en continu avec de la mousse
WO1993005224A2 (fr) * 1991-09-05 1993-03-18 Minnesota Mining And Manufacturing Company Production et application en continu de mousse sur un substrat poreux en mouvement
WO1993005224A3 (fr) * 1991-09-05 1993-04-15 Minnesota Mining & Mfg Production et application en continu de mousse sur un substrat poreux en mouvement

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