EP1817159A1 - Method and device for applying adhesive to corrugated cardboard - Google Patents
Method and device for applying adhesive to corrugated cardboardInfo
- Publication number
- EP1817159A1 EP1817159A1 EP04787023A EP04787023A EP1817159A1 EP 1817159 A1 EP1817159 A1 EP 1817159A1 EP 04787023 A EP04787023 A EP 04787023A EP 04787023 A EP04787023 A EP 04787023A EP 1817159 A1 EP1817159 A1 EP 1817159A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- adhesive
- corrugated cardboard
- ribs
- distance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
- B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
- B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
- B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
- B31F1/2818—Glue application specially adapted therefor
Definitions
- Corrugated cardboard is typically a lightweight construction
- Corrugated cardboard is defined by the size of the corrugations (also called ribs), the corrugation layers and the quality of the ceiling papers.
- Conventional devices for making corrugated cardboard typically work with a system of rollers, one of which is provided with an adhesive film. When the corrugated cardboard runs around this roller, the adhesive film is transferred to the rib side of the cardboard.
- Corrugated cardboard can cause problems, which are partly due to the fact that the glue application on the rib side cannot be dosed very precisely. Among other things, this can lead to situations where the quality of the corrugated cardboard is impaired by too little or too much adhesive application. It is obvious that too little adhesive can cause the cover paper to easily detach from the corrugated cardboard. If the adhesive is applied too strongly, the adhesive consumption is high and too much moisture is introduced into the cardboard.
- Moisture content is within predetermined limits, since individual elements are made from the sandwich, for example by punching.
- punching the sandwich must be flat and must not have any irregularities due to moisture.
- the task is to develop a corresponding method and to create a device that allow the production of high quality corrugated cardboard.
- the object is achieved by a device according to claim 1 and a method according to claim 17.
- the amount of adhesive can be greatly reduced compared to conventional devices.
- the invention can be designed so that the adhesive consumption is approximately half that of conventional systems.
- ceiling paper can be used according to the invention, which is thinner than before, since there is less moisture in the sandwich after the adhesive application.
- a device according to the invention is advantageous because it consumes less adhesive.
- a closed adhesive circuit can be implemented in which adhesive only exits at the nozzle.
- a device according to the invention can be operated at higher speeds, which results in a higher throughput.
- a device according to the invention can start and stop much faster.
- the glue is applied in a controlled manner. This eliminates intermediate storage and further steps.
- Embodiment self-cleaning.
- Figure 1 shows a first embodiment of the invention in a highly schematic representation.
- FIG. 3A shows a part of a further embodiment of the invention in plan view
- FIG. 3B shows a part of the embodiment according to FIG. 3A, the nozzle being set at an angle
- Fig. 5 shows a further embodiment of the invention in side view. Detailed description of the exemplary embodiments
- the invention relates to a device for use in the
- FIG. 1 shows a first device 10 according to the invention.
- the device 10 is specially designed for applying adhesive to the rib side of a corrugated cardboard 16.
- the device 10 comprises a (slot) nozzle 15 which dispenses liquid adhesive while the rib side of the corrugated cardboard 16 is moved past at a distance A below the nozzle 15, as indicated by the arrow X.
- the distance A (with A> 0) can be set so that adhesive is only applied to the rib side in the upper area of the ribs.
- the device 10 has an adhesive tank 11, a
- a system for flow measurement and control which preferably comprise a flow controller 13 and an actuator 14 in order to be able to measure and adjust the flow.
- adhesive is conveyed from the tank 11 into the nozzle 15.
- the nozzle 15 is shown in a highly schematic section. The adhesive enters the nozzle 15 on the top.
- the (slit) nozzle 15 shown has an elongated outlet opening 15.1 which faces in the direction of corrugated cardboard 16.
- the elongated outlet opening 15.1, as well as the ribs of the corrugated cardboard 16, run essentially perpendicular to the plane of the drawing, the outlet opening 15.1 preferably being set slightly in relation to the ribs (not shown in FIG. 1).
- FIG. 2 shows a further device 20 according to the invention.
- This device 20 is a so-called nozzle chair, which can be used, for example, in a production line.
- the corrugated cardboard 16 runs as a web over two plates 28 or suitable guide elements.
- the contact pressure of the plates 28 can be adjusted by springs or hydraulic means, as indicated by the double arrows 30 in FIG. 2.
- the actual nozzle 25 is located above the corrugated cardboard 16.
- the nozzle 25 can be adjusted by means of adjustment mechanisms. With this setting, for example, the relative position (distance A and / or angle of attack W) of the nozzle 25 in Relation to the corrugated cardboard 16 are specified.
- means can be provided to mechanically adjust the nozzle width or the width of the nozzle outlet opening.
- Said shaft can, for example, be mounted in a thread of the nozzle 25 in order to move in or out of a nozzle chamber depending on the direction of rotation. Depending on the position of the shaft, the nozzle chamber is enlarged or reduced, which also changes the outlet opening.
- the shaft can also carry a sliding element which is displaced by rotating the shaft in order to change the outlet opening.
- a piston can also be used to adjust the nozzle orifice.
- the nozzle chair can be moved up and down parallel to the axis 29 in order to be able to adjust the distance A between the nozzle 25 and the ribs of the corrugated cardboard 16.
- the nozzle chair 20 is preferably adjustable by an angle W, the setting angle W being between 0 and 20 degrees, preferably between 2 and 10 degrees, as indicated in the highly schematic plan view in FIGS. 3A and 3B.
- the nozzle 15 in FIG. 1 can also be made adjustable.
- FIGS. 3A and 3B A further embodiment is shown in the highly schematic plan view in FIGS. 3A and 3B.
- the nozzle 35 can, as optionally also in FIGS. 1 and 2, be turned on.
- the angle W of the nozzle 35 is zero degrees with respect to the course of the ribs, and the outlet opening 35.1 of the nozzle 35 thus runs parallel to the ribs of the corrugated cardboard 16.
- the angle W is greater than zero degrees and the outlet opening 35.1 of the nozzle 35 extends obliquely to the ribs of the corrugated cardboard 16.
- the inclined position has the advantage that the nozzle 35 is always in contact with at least one shaft over its entire length when the Device is operated in contact mode. In this case, the nozzle 35 meshes obliquely over the ribs of the corrugated cardboard 16.
- the devices according to the invention can be operated as required in two different operating modes (contactless mode and contact mode).
- Either an embodiment can be designed in such a way that it can be switched from one mode to the other. Or the embodiment can be specially designed for one of the two modes.
- the first mode contactless mode
- a type of intermittent adhesive application results from the fact that the outlet opening 45.1 of the nozzle 45 is arranged at a distance A so close above the ribs 16.1 that a continuous emerging adhesive film 16.4 each briefly leaves and thus only covers the uppermost regions of the ribs 16.1 with adhesive 16.2.
- FIG. 4 shows a moment in which the adhesive film 16.4 is tearing off after an adhesive strip 16.3 has been applied to a rib.
- the angle W is preferably set to zero degrees or to an angle less than 5 degrees.
- the second mode (contact mode) is shown in Fig. 5.
- An adhesive film 16.4 is continuously dispensed from the nozzle 45. Since the corrugated cardboard 16 moves to the left relative to the nozzle, as indicated by the arrow X, the adhesive film 16.4 is stripped or cut off by touching or approaching the outlet opening 45.1 to the uppermost region of the rib 16.1.
- the adhesive on the ribs 16.1 turns out somewhat shorter and thinner than in the first mode, but this depends on the settings (feed rate, amount of adhesive / unit of time, toughness of the adhesive, shape and nature of the corrugated cardboard, etc. ) depends. 5, an adhesive strip 16.3 is being created by tearing off the adhesive film 16.4.
- the angle W is preferably set to be greater than zero degrees, the angle W preferably being between 2 and 10 degrees.
- a device according to the invention can be equipped with various control and monitoring elements in order to be able to monitor the method according to the invention.
- a is parallel to the nozzle
- Ionizing rod or the like arranged in order to be able to influence / deflect the adhesive film 16.4 after it emerges from the outlet opening 45.1.
- the adhesive film 16.4 can be attracted and thus influenced.
- the nozzles can have cleaning lips or others
- Lips can be used to clean the nozzles, since contamination can occur from inside (through glue) and from outside (through parts of the cardboard). Lips can also be arranged in the region of the outlet opening, which allow the adhesive film to be wiped off when touching or approaching a rib. These lips can be flexible to prevent damage to the rib structure. It can also be trailing lips, which are pulled over the ribs and thereby release the adhesive film.
- a cleaning element is arranged inside the nozzle, which prevents the formation and / or setting of impurities by moving it back and forth.
- the nozzle is a surface nozzle or a slot nozzle which has an elongated outlet opening.
- the nozzle is preferably arranged such that the distance A to the corrugated cardboard 16 is essentially the same over the entire length L (see FIG. 3B) of the outlet opening.
- the nozzle can preferably be inclined
- the corrugated cardboard 16 can be moved past the nozzle either as a corrugated cardboard web or in the form of individual corrugated cardboard sheets. It is also conceivable to move the nozzle past the corrugated cardboard 16.
- the device comprises means for applying cover paper or cover paper to the ribs 16.1 provided with adhesive, in order thereby to produce a sandwich structure.
- the device is preferably implemented in such a way that there is a closed course of adhesive, in which adhesive only penetrates outward in the region of the nozzle.
- a nozzle is used
- the self-cleaning nozzle can have, for example, a cleaning lip, cleaning elements or the like, as described.
- An embodiment is preferred in which the nozzle performs an oscillating transverse movement which is directed essentially in the direction of expansion of the outlet opening. This transverse movement prevents contamination from sticking to the outside of the nozzle.
- the distance A can be set manually or by motor according to the invention and depending on the embodiment.
- the device according to the invention can preferably be designed with means for intermittent adhesive application, the means preferably having a controlled lip or a controlled slide in order to interrupt the adhesive film which exits at the outlet opening or to influence the amount of adhesive that escapes.
- This influencing preferably takes place synchronously with the ribs of the corrugated cardboard moving past. Such synchronization can take place by optical scanning of the corrugated cardboard.
- the device preferably has an adhesive distributor in order to introduce the adhesive uniformly (with respect to the length L) into the nozzle.
- an adhesive application amount between 5 g / m 2 and 20 g / m 2 can be achieved with the present invention.
- the amount of adhesive applied is preferably set between 8 g / m 2 and 14 g / m 2 .
- the present invention can be any suitable material. Depending on the embodiment, the present invention can be any suitable material.
- Corrugated cardboard are moved past the nozzle at a speed between 100 m / min and 300 m / min, preferably at a speed between 120 m / min and 180 m / min.
- a standstill pressure is the
- Preset adhesive in the nozzle in order to be able to dispense adhesive in the desired amount immediately after starting the device.
- the device can be stopped at any time and then restarted. This significantly reduces the amount of waste.
- the device is automatic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Making Paper Articles (AREA)
- Coating Apparatus (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2004/010805 WO2006034720A1 (en) | 2004-09-27 | 2004-09-27 | Method and device for applying adhesive to corrugated cardboard |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1817159A1 true EP1817159A1 (en) | 2007-08-15 |
EP1817159B1 EP1817159B1 (en) | 2009-03-04 |
Family
ID=34958943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04787023A Expired - Lifetime EP1817159B1 (en) | 2004-09-27 | 2004-09-27 | Method and device for applying adhesive to corrugated cardboard |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080268145A1 (en) |
EP (1) | EP1817159B1 (en) |
CN (1) | CN101094766B (en) |
AT (1) | ATE424293T1 (en) |
DE (1) | DE502004009107D1 (en) |
WO (1) | WO2006034720A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2364250B1 (en) | 2008-11-13 | 2020-03-18 | Packsize, LLC | Box gluing device |
CN105058871A (en) * | 2015-07-29 | 2015-11-18 | 浙江大胜达包装有限公司 | Homogeneous multilayer real-time composite corrugated paperboard equipment and paperboard making method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE515605C (en) * | 1929-03-23 | 1931-01-08 | Cartonnagenindustrie Ag F | Process and machine for the production of corrugated cardboard with wavy lines running diagonally to the cut edges |
DE677758C (en) * | 1934-08-18 | 1939-07-13 | Oswald Kaeppler | Method and device for the production of cardboard, cardboard or similar material with corrugations that run obliquely to the trimmed edges |
US3518142A (en) * | 1965-07-21 | 1970-06-30 | Sun Oil Co | Process for applying hot melt adhesive to corrugated paperboard |
US4343259A (en) * | 1980-07-11 | 1982-08-10 | Weyerhaeuser Company | Apparatus for applying adhesive in corrugated board manufacture |
US5609711A (en) * | 1994-06-21 | 1997-03-11 | Miller; Ray R. | Method of bonding laminates using pregelatinized starch |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1087857A (en) * | 1992-12-11 | 1994-06-15 | 刘为成 | Corrugated case gluing method and equipment |
CN2611141Y (en) * | 2003-04-09 | 2004-04-14 | 李明山 | Multi-purpose corrugated glue device |
-
2004
- 2004-09-27 WO PCT/EP2004/010805 patent/WO2006034720A1/en active Application Filing
- 2004-09-27 CN CN2004800444740A patent/CN101094766B/en not_active Expired - Fee Related
- 2004-09-27 EP EP04787023A patent/EP1817159B1/en not_active Expired - Lifetime
- 2004-09-27 US US11/663,918 patent/US20080268145A1/en not_active Abandoned
- 2004-09-27 DE DE502004009107T patent/DE502004009107D1/en not_active Expired - Lifetime
- 2004-09-27 AT AT04787023T patent/ATE424293T1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE515605C (en) * | 1929-03-23 | 1931-01-08 | Cartonnagenindustrie Ag F | Process and machine for the production of corrugated cardboard with wavy lines running diagonally to the cut edges |
DE677758C (en) * | 1934-08-18 | 1939-07-13 | Oswald Kaeppler | Method and device for the production of cardboard, cardboard or similar material with corrugations that run obliquely to the trimmed edges |
US3518142A (en) * | 1965-07-21 | 1970-06-30 | Sun Oil Co | Process for applying hot melt adhesive to corrugated paperboard |
US4343259A (en) * | 1980-07-11 | 1982-08-10 | Weyerhaeuser Company | Apparatus for applying adhesive in corrugated board manufacture |
US5609711A (en) * | 1994-06-21 | 1997-03-11 | Miller; Ray R. | Method of bonding laminates using pregelatinized starch |
Also Published As
Publication number | Publication date |
---|---|
DE502004009107D1 (en) | 2009-04-16 |
CN101094766B (en) | 2010-08-11 |
WO2006034720A1 (en) | 2006-04-06 |
ATE424293T1 (en) | 2009-03-15 |
EP1817159B1 (en) | 2009-03-04 |
US20080268145A1 (en) | 2008-10-30 |
CN101094766A (en) | 2007-12-26 |
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