EP0546483B1 - Vorrichtung zum Beschichten eines Substrates mit einer Substanz - Google Patents
Vorrichtung zum Beschichten eines Substrates mit einer Substanz Download PDFInfo
- Publication number
- EP0546483B1 EP0546483B1 EP92120769A EP92120769A EP0546483B1 EP 0546483 B1 EP0546483 B1 EP 0546483B1 EP 92120769 A EP92120769 A EP 92120769A EP 92120769 A EP92120769 A EP 92120769A EP 0546483 B1 EP0546483 B1 EP 0546483B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- counter
- substrate
- pressure roller
- coating
- chambers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000758 substrate Substances 0.000 title claims description 51
- 238000000576 coating method Methods 0.000 title claims description 35
- 239000011248 coating agent Substances 0.000 title claims description 34
- 239000000126 substance Substances 0.000 title claims description 16
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000010408 film Substances 0.000 description 14
- 239000011888 foil Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/12—Advancing webs by suction roller
-
- 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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
-
- 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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
Definitions
- the invention relates to a device for coating a substrate with a substance, in particular a film with an adhesive, the substance being applied via a loading head by perforating a template onto the substrate in cooperation with a counter-pressure roller or the like within a coating gap, the counter-pressure roller has a screen jacket with holes and a radially oriented suction flow is generated in an area in and / or after the coating gap in the counter-pressure roller.
- DE-OS 39 05 342 shows a perforated cylinder in cooperation with a counter-pressure roller, between which a substrate is passed and coated with a substance.
- the substance which can be a thermoplastic, for example, is melted beforehand, so that they are applied to the substrate in the liquid state.
- Such devices are used not only for coating textile substrates, but also for example for coating films with an adhesive or the like. All of these application options are intended to be encompassed by the present invention.
- the coating of foils poses considerable problems.
- the foils are usually very thin webs that are passed between the stencil and the counter-pressure roller. It is not enough that the film is guided in the coating gap, but it should also be subjected to a certain tensile stress so that it does not deform during the coating process. It is particularly important to take into account that heat is applied to the film in the coating gap, since the template is heated due to the melted substance.
- the template usually a metal cylinder, has perforations, the inner surface is usually a multiple of the area with which the substance to be applied is connected to the substrate. These perforations cause very high adhesive forces, so that a considerable force has to be used to pull the substance out of the perforation by means of the substrate. If the film on the counter-pressure roller does not have sufficient hold, ie if there is no sufficient tension and no sufficient friction, the film remains on the template or forms a trailing belly.
- DE-A 29 43 894 discloses a device for the intermittent transport of preferably air-impermeable webs of goods.
- a device for the intermittent transport of preferably air-impermeable webs of goods.
- a web of material can be coated by means of a screen carriage and a roller.
- a device is shown that works with a roller as a suction roller and a pressure cylinder, between which the web is guided.
- the suction roller is provided with a suction segment to at least partially fix a web to the roller.
- the present invention has for its object to provide a device of the above. To develop a way of ensuring that the substrate adheres to the counter-pressure roller and thus reliably pulls the substrate off the stencil.
- the suction flow is eliminated in a draw-off area for the coated substrate and compressed air flows out of the holes for lifting off the coated substrate.
- the design of the counter-pressure roller and template is of secondary importance. It is also within the scope of the invention that, for example, the stencil and / or counter-pressure roller runs as an endless belt over rollers, so that a flat coating gap is formed for the substrate. All of these configurations are intended to be encompassed by the present inventive concept.
- the suction flow it should be sufficient for the suction flow to be applied to the substrate only in a partial peripheral region of the counterpressure roller. This mainly depends on the holding forces that should be exerted on the substrate.
- the substrate is to be pulled off the counterpressure roller after a certain circumferential area, it has proven advisable to release the vacuum at least in this area so that the removal of the substrate from the counter roller is facilitated.
- This lifting can also be supported in that, for example, compressed air is applied in this area through the holes in the screen jacket, which supports lifting of the substrate.
- the chamber walls should be designed to be elastic, at least in the area of this coating gap, since the screen jacket of the stencil lies in this coating gap. As a result, both the coating of the substrate and its guidance are significantly improved.
- a device P according to the invention for coating a substrate 1, in particular a film has, according to. Fig. 1 a template 2, which cooperates with a counter-pressure roller 3.
- a loading head 4 via which a melted substance, not shown, is applied to the substrate 1 through perforations 5.
- the feed head 4 is provided with corresponding channels and a nozzle mouth 6, a further embodiment of the feed head 4, provided that it is known, is not to be described in more detail here.
- the template 2 is designed as a preferably metallic cylinder, the perforations 5 being formed in this metallic cylinder, and this metallic cylinder rotating in the direction z about an axis of rotation A.
- Corresponding drive elements for the template 2 are also neglected for the sake of clarity. However, it has a radius r which is so large that the feed head 4 can be accommodated in any case.
- the counter-pressure roller 3 interacts with the template 2 and rotates about its axis B in the direction z 1.
- the counter-pressure roller 3 has a jacket 7, which is designed as a sieve, i.e. also perforated.
- the radius r 1 denotes the radius of the counter-pressure roller 3, i.e. the distance of the axis of rotation B from the screen jacket 7.
- the axis of rotation A of the template 2 is arranged below the axis of rotation B of the counter-pressure roller 3.
- the concept of the invention also includes an inverted arrangement.
- the axis of rotation A should maintain a distance a from the axis of rotation B which is less than the sum of the two radii r and r 1. This causes, as is shown in particular in FIG. 2, that the screen jacket 7 in a certain area b when interacting with the template 2 of this template 2 and in this way an extended coating gap 8 is formed. In the area of this coating gap 8, the substrate 1 is guided between the template 2 and the counter-pressure roller 3.
- a ring 9 is formed within the counter-pressure roller 3 and is divided into chambers 10.
- chamber walls 11 are provided.
- 10 holes 12 are provided in the screen jacket 7 in the region of the chambers, through which either air can be sucked into the chambers 10 or air can be blown out of the chambers 10. The meaning of air intake or air blowing is described below.
- the interior of the counter-pressure roller 3 is a rubberized roller 13, in the rubber jacket 14 of which the chamber walls 11 are embedded as strips of material, for example made of sheet metal.
- the screen jacket 7 is then pushed onto this sheet metal strip and rotates in the direction z 1.
- the chamber walls 11 are connected to the screen jacket 7 and graze along the roller 13.
- the area b described above is formed, within which the screen jacket 7 of the stencil 2 rests over a wider coating gap 8, it must be ensured in any case that the chamber walls or their holder yields. This is indicated in Fig. 2 and can be solved with the rubber jacket 14 of the rubberized roller 13 in a simple manner, the chamber walls 11 then being inclined in the direction of rotation.
- the substrate 1 is guided over a roller 15 before it enters the coating gap 8.
- the substrate 1 of the counter-pressure roller 3 then lies against it and is guided over a substantial part of the circumference of the counter-pressure roller 3 before it lifts off from the counter-pressure roller 3 and is fed to further processing or recycling.
- the substance to be applied is pressed out of the feed head 4 through the nozzle mouth 6 into a perforation 5 and comes into contact with the substrate 1.
- the contact area 16 is relatively small in relation to the area with which the substance is in contact with the template 2 within the perforation 5. That is, the adhesive forces of the perforations 5 are very high. The result of this is that the substrate 1 tends to adhere to the template 2, so that further options must be sought so that the substrate 1 can be removed from the template 2 after coating the substance can be lifted off together with the coating.
- the substrate 1 wraps around the counter-pressure roller 3 to a large extent.
- the force that holds the substrate 1 on the counter-pressure roller 3 results from the web tension when the substrate 1 is pulled off the counter-pressure roller 3 and the friction of the substrate 1 on the counter-pressure roller 3. If, for example, the web tension approaches zero, the friction of the Substrate on the counter-pressure roller 3 towards zero.
- the force that holds the substrate 1 on the counter-pressure roller 3 is absent and the substrate 1 remains on the template 2 for an undesirably long time, and considerable bulges can form.
- a vacuum is generated in the chambers 10 in the region b of the coating gap 8 and thereafter so that radially directed forces act on the substrate 1 and hold this substrate 1 firmly on the counter-pressure roller 3. It is sufficient in itself if only a few chambers in and after the coating area are subjected to a vacuum, practice showing how many such chambers are necessary within the counter-pressure roller 3. It goes without saying that the more chambers are subjected to vacuum become, the more firmly the substrate 1 is held on the counter-pressure roller 3.
- the ring 9 is divided into chambers 10 as a whole. This should only be understood as an example, since only one or a few chambers after the coating gap 8 can suffice. However, it is also contemplated that in order to lift the substrate from the counter-pressure roller 3, the vacuum is not only released, if any, in the chambers provided there, but that the corresponding chamber or chambers are pressurized with compressed air in this extraction area 17, so that the substrate 1 is virtually blown off from the counter-pressure roller 3 from the inside.
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Adhesive Tapes (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4140652A DE4140652A1 (de) | 1991-12-10 | 1991-12-10 | Vorrichtung zum beschichten eines substrates mit einer substanz |
DE4140652 | 1991-12-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0546483A2 EP0546483A2 (de) | 1993-06-16 |
EP0546483A3 EP0546483A3 (en) | 1993-07-14 |
EP0546483B1 true EP0546483B1 (de) | 1997-03-12 |
Family
ID=6446685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92120769A Expired - Lifetime EP0546483B1 (de) | 1991-12-10 | 1992-12-05 | Vorrichtung zum Beschichten eines Substrates mit einer Substanz |
Country Status (4)
Country | Link |
---|---|
US (1) | US5360481A (es) |
EP (1) | EP0546483B1 (es) |
DE (2) | DE4140652A1 (es) |
ES (1) | ES2099192T3 (es) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5607508A (en) * | 1995-06-07 | 1997-03-04 | Westphal; Scott K. | Apparatus for selectively coating corrugated sheet material |
US5938106A (en) * | 1996-08-01 | 1999-08-17 | International Business Machines Corporation | Method and apparatus for applying solder and forming solder balls on a substrate |
DE29712377U1 (de) * | 1997-07-12 | 1998-06-10 | Planatol Klebetechnik GmbH, 83101 Rohrdorf | Querleimwerk für laufende Bahnen |
CH693870A5 (de) * | 1998-04-21 | 2004-03-31 | Schaetti Ag | Absaugvorrichtung fuer eine Doppelpunkt-Beschichtungsanlage. |
DE10110633A1 (de) * | 2001-03-06 | 2002-09-19 | Voith Paper Patent Gmbh | Auftragsvorrichtung |
US6887312B1 (en) | 2001-03-06 | 2005-05-03 | Voith Paper Patent Gmbh | Applicator |
US7367264B2 (en) * | 2004-07-30 | 2008-05-06 | Beaudry Wallace J | Method and apparatus for treating sheets including a vacuum roller for retaining sheets in curved configuration |
CN108340630B (zh) * | 2018-03-27 | 2020-04-10 | 深圳市君兴精机纸箱机械有限公司 | 一种双层纸板自动贴合装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2943894C3 (de) * | 1979-03-19 | 1982-08-05 | Gerhard Ing.(grad.) 4800 Bielefeld Klemm | Vorrichtung zum Transport von luftundurchlässigen Warenbahnen, wie Papier- oder Folienbahnen |
DE3100814A1 (de) * | 1981-01-13 | 1982-07-29 | Günter O. 7432 Urach Stumpf | Vorgabewalze |
US4341580A (en) * | 1981-01-27 | 1982-07-27 | Nazeer Ahmed | Method of forming an elongated composite laminate tube |
FI71081C (fi) * | 1984-05-11 | 1986-11-24 | Waertsilae Oy Ab | Bestrykningsanordning |
US4761309A (en) * | 1987-01-05 | 1988-08-02 | Beloit Corporation | Coating apparatus and method |
US5094886A (en) * | 1989-01-17 | 1992-03-10 | Npd Corporation | Method and apparatus for pattern impregnation of paper and other non-woven web |
-
1991
- 1991-12-10 DE DE4140652A patent/DE4140652A1/de not_active Withdrawn
-
1992
- 1992-12-05 ES ES92120769T patent/ES2099192T3/es not_active Expired - Lifetime
- 1992-12-05 DE DE59208176T patent/DE59208176D1/de not_active Expired - Fee Related
- 1992-12-05 EP EP92120769A patent/EP0546483B1/de not_active Expired - Lifetime
- 1992-12-09 US US07/988,186 patent/US5360481A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5360481A (en) | 1994-11-01 |
EP0546483A3 (en) | 1993-07-14 |
DE4140652A1 (de) | 1993-06-17 |
EP0546483A2 (de) | 1993-06-16 |
DE59208176D1 (de) | 1997-04-17 |
ES2099192T3 (es) | 1997-05-16 |
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