FR2774156A1 - Accelerated drying of inks, varnishes and paints for water based and flammable bases - Google Patents
Accelerated drying of inks, varnishes and paints for water based and flammable bases Download PDFInfo
- Publication number
- FR2774156A1 FR2774156A1 FR9800765A FR9800765A FR2774156A1 FR 2774156 A1 FR2774156 A1 FR 2774156A1 FR 9800765 A FR9800765 A FR 9800765A FR 9800765 A FR9800765 A FR 9800765A FR 2774156 A1 FR2774156 A1 FR 2774156A1
- Authority
- FR
- France
- Prior art keywords
- air
- heat
- varnishes
- profile
- inks
- 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.)
- Pending
Links
- 238000001035 drying Methods 0.000 title claims abstract description 7
- 239000000976 ink Substances 0.000 title claims description 9
- 239000002966 varnish Substances 0.000 title claims description 8
- 239000003973 paint Substances 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 4
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 2
- 238000007639 printing Methods 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 1
- 238000007645 offset printing Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000007647 flexography Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0406—Drying webs by radiation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
- F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
Abstract
Description
La présente invention concerne un dispositif destiné à l'accélération du séchage des encres et vernis d'imprimerie, et plus particulièrement les encres et vernis à base aqueuse utilisés en flexographie et les encres grasses et vernis aqueux utilisés en offset ainsi que des peintures ne comportant pas de constituants susceptibles de s'enflammer au contact d'une source de chaleur. The present invention relates to a device intended for accelerating the drying of printing inks and varnishes, and more particularly the water-based inks and varnishes used in flexography and the fatty inks and aqueous varnishes used in offset as well as paints not comprising no components liable to ignite on contact with a heat source.
Le séchage de telles encres , vernis ou peintures est traditionnellement effectué au moyen d'émetteurs infra-rouge court devant lesquels défile le support préalablement imprimé ou peint, ces émetteurs ayant la particularité d'émettre, outre le rayonnement infra-rouge, une importante quantité de chaleur. Bien que pouvant comporter un extracteur de chaleur, la température importante régnant aux abords de tels dispositifs est nuisible à certains substrats imprimés ou peints sensibles à la chaleur, tels que les films plastiques, ce qui peut interdire le recours à cette technique dans les cas les plus critiques représentés notamment par les films de très faible épaisseur. The drying of such inks, varnishes or paints is traditionally carried out by means of short infrared emitters in front of which the previously printed or painted support scrolls, these emitters having the characteristic of emitting, in addition to infrared radiation, a large quantity heat. Although it may include a heat extractor, the high temperature prevailing around such devices is harmful to certain printed or painted substrates sensitive to heat, such as plastic films, which may prohibit the use of this technique in the most difficult cases. more critical, represented in particular by very thin films.
Le dispositif selon l'invention permet de remédier à cet inconvénient
Il comporte en effet, selon une première caractéristique, un dispositif permettant d'amener au contact du matériaux préalablement imprimé et au voisinage immédiat de l'émetteur infra-rouge, un important volume d'air à très faible température, celle-ci pouvant être très inférieure à zéro degrés Celsius. Cet air à très faible température est produit par tout moyen approprié dont notamment par utilisation de l'effet de détente adiabatique de l'air.The device according to the invention overcomes this drawback
It indeed comprises, according to a first characteristic, a device making it possible to bring into contact with the previously printed material and in the immediate vicinity of the infrared emitter, a large volume of air at very low temperature, which can be much less than zero degrees Celsius. This air at very low temperature is produced by any suitable means, in particular by using the adiabatic expansion effect of the air.
Selon une seconde caractéristique, il est crée également au voisinage immédiat de l'émetteur, une extraction de l'air froid, de façon à procéder au refroidissement de l'émetteur. Le volume d'air extrait est de quantité supérieure au volume d'air apporté de façon à créer une zone de dépression aux abords du substrat à sécher, cette dépression empêchant la propagation de la chaleur résiduelle aux alentours du dispositif. According to a second characteristic, an extraction of cold air is also created in the immediate vicinity of the emitter, so as to cool the emitter. The volume of extracted air is greater than the volume of air supplied so as to create a zone of depression near the substrate to be dried, this depression preventing the propagation of residual heat around the device.
Selon un mode particulier de réalisation, le dispositif objet de la présent invention, peut comporter: - un premier élément de forme adaptée servant de support à un émetteur infra-rouge long, moyen ou court et assurant la focalisation du rayonnement infra-rouge sur le substrat imprimé ou peint et maintenu à proche distance du substrat. According to a particular embodiment, the device which is the subject of the present invention may include: - a first element of suitable shape serving as support for a long, medium or short infrared emitter and ensuring the focusing of the infrared radiation on the printed or painted substrate and kept close to the substrate.
- deux éléments rapportés de façon symétrique au premier, destinés à canaliser le flux d'air froid et assurer sa répartition de la façon la plus uniforme sur le substrat imprimé. - two elements symmetrically attached to the first, intended to channel the flow of cold air and ensure its distribution in the most uniform way on the printed substrate.
- des générateurs d'air froid basé sur le principe de la détente adiabatique de l'air et capable de produire un volume d'air suffisant à une température très basse.- cold air generators based on the principle of adiabatic air expansion and capable of producing a sufficient volume of air at a very low temperature.
- un système d'extraction d'air pouvant être assuré par une turbine et dont le volume d'extraction est supérieur au volume d'air froid apporté.- an air extraction system which can be provided by a turbine and whose extraction volume is greater than the volume of cold air supplied.
- un capot de protection permettant l'isolation thermique de l'ensemble du dispositif pour les faces pouvant être accessibles par les opérateurs.- a protective cover allowing thermal insulation of the entire device for the faces that can be accessed by operators.
En fonction de la quantité d'énergie nécessaire au séchage des encres ou peintures et dans le cas de la recherche de la plus grande vitesse de défilement du substrat, plusieurs dispositifs tels que décrits précédemment peuvent être accolés. Depending on the amount of energy required for drying the inks or paints and in the case of finding the highest running speed of the substrate, several devices as described above can be combined.
Le dessin annexé illustre en coupe le dispositif. The attached drawing illustrates in section the device.
En référence à ce dessin, un profilé (1) de longueur adaptée à la dimension du substrat à sécher, fermé à ses deux extrémités et ouvert à sa base, reçoit un émetteur infra-rouge fixé par ses extrémités. La partie supérieure du profilé est percée d'un ou plusieurs orifices (3) permettant à l'aide d'une turbine (4) et d'un conduit d'évacuation (5) d'extraire l'air contenu dans le profilé (1). With reference to this drawing, a profile (1) of length adapted to the dimension of the substrate to be dried, closed at its two ends and open at its base, receives an infrared emitter fixed by its ends. The upper part of the profile is pierced with one or more orifices (3) allowing, using a turbine (4) and an exhaust duct (5) to extract the air contained in the profile ( 1).
Les profilés (6), de longueur identique au profilé (1) et également fermés à leurs extrémités diffusent , sur toute leur longueur, par l'ouverture (7)l'air froid produit par les générateurs (8) fonctionnant selon le principe de la détente adiabatique de l'air comprimé arrivant par les orifices (9)
Un capot (10), contenant un isolant thermique (11) assure la sécurité des opérateurs face à l'échauffement produit par le dégagement de chaleur de l'émetteur (2) sur la partie supérieure du profilé (1).The profiles (6), of identical length to the profile (1) and also closed at their ends diffuse, over their entire length, through the opening (7) the cold air produced by the generators (8) operating according to the principle of the adiabatic expansion of the compressed air arriving through the orifices (9)
A cover (10), containing a thermal insulator (11) ensures the safety of the operators in the face of the heating produced by the release of heat from the transmitter (2) on the upper part of the profile (1).
L'ensemble est maintenu à une distance (D) la plus faible qui soit du substrat (12) à sécher. Le volume d'air extrait par la turbine (4) étant supérieur au volume d'air produit par les générateurs (8) il se crée dans la zone (13) une dépression d'air empêchant la chaleur générée par l'émetteur infra-rouge de se propager au-delà du dispositif. The assembly is kept at the smallest distance (D) from the substrate (12) to be dried. The volume of air extracted by the turbine (4) being greater than the volume of air produced by the generators (8) there is created in the area (13) an air depression preventing the heat generated by the infrared emitter. red to spread beyond the device.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9800765A FR2774156A1 (en) | 1998-01-26 | 1998-01-26 | Accelerated drying of inks, varnishes and paints for water based and flammable bases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9800765A FR2774156A1 (en) | 1998-01-26 | 1998-01-26 | Accelerated drying of inks, varnishes and paints for water based and flammable bases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2774156A1 true FR2774156A1 (en) | 1999-07-30 |
Family
ID=9522131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9800765A Pending FR2774156A1 (en) | 1998-01-26 | 1998-01-26 | Accelerated drying of inks, varnishes and paints for water based and flammable bases |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2774156A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019201960A1 (en) | 2018-04-20 | 2019-10-24 | Koenig & Bauer Ag | Processing machine comprising a radiation dryer and method for operating said dryer |
| DE102018206152A1 (en) * | 2018-04-20 | 2019-10-24 | Koenig & Bauer Ag | Drying device for a printing material processing machine and method for operating a drying device |
| EP4205865A4 (en) * | 2021-11-05 | 2024-04-03 | Jiangsu Contemporary Amperex Tech Ltd | Air nozzle and coating machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2258296A (en) * | 1991-07-25 | 1993-02-03 | G E W | U.v. dryers |
| GB2274430A (en) * | 1993-01-08 | 1994-07-27 | G E W | Air-cooled U.V.dryers in printing machine |
-
1998
- 1998-01-26 FR FR9800765A patent/FR2774156A1/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2258296A (en) * | 1991-07-25 | 1993-02-03 | G E W | U.v. dryers |
| GB2274430A (en) * | 1993-01-08 | 1994-07-27 | G E W | Air-cooled U.V.dryers in printing machine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019201960A1 (en) | 2018-04-20 | 2019-10-24 | Koenig & Bauer Ag | Processing machine comprising a radiation dryer and method for operating said dryer |
| DE102018206154A1 (en) * | 2018-04-20 | 2019-10-24 | Koenig & Bauer Ag | Drying device for a printing material processing machine and method for operating a drying device |
| DE102018206152A1 (en) * | 2018-04-20 | 2019-10-24 | Koenig & Bauer Ag | Drying device for a printing material processing machine and method for operating a drying device |
| US11046070B2 (en) | 2018-04-20 | 2021-06-29 | Koenig & Bauer Ag | Processing machine comprising a radiation dryer and method for operating said dryer |
| DE102018206154B4 (en) | 2018-04-20 | 2021-10-28 | Koenig & Bauer Ag | Drying device for a printing material processing machine and method for operating a drying device |
| EP4098447A1 (en) | 2018-04-20 | 2022-12-07 | Koenig & Bauer AG | Processing machine with a drying device and method for operating a drying device |
| EP4205865A4 (en) * | 2021-11-05 | 2024-04-03 | Jiangsu Contemporary Amperex Tech Ltd | Air nozzle and coating machine |
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