EP0703076A1 - Procédé pour congeler des encres - Google Patents
Procédé pour congeler des encres Download PDFInfo
- Publication number
- EP0703076A1 EP0703076A1 EP94115030A EP94115030A EP0703076A1 EP 0703076 A1 EP0703076 A1 EP 0703076A1 EP 94115030 A EP94115030 A EP 94115030A EP 94115030 A EP94115030 A EP 94115030A EP 0703076 A1 EP0703076 A1 EP 0703076A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- colors
- underside
- screen printing
- station
- 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- Withdrawn
Links
Images
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
Definitions
- the invention relates to a method according to the preamble of claim 1 and a device according to claim 19.
- Such methods and devices are e.g. known from WO 92/14610. There - also for viscose colors - it is recommended to bring the printing ink into direct contact with the cooling device.
- the object of the invention is to prevent smearing of the colors, although short processing times are possible.
- a freeze drying station 11 has a cooling plate 12, which is penetrated by cooling coils 14 near its underside 13. There is liquid nitrogen in the cooling coil 14. Water is in the gaseous state and / or as water vapor and / or as mist in the ambient air 16.
- a hoarfrost layer 17 is deposited on the underside 13.
- "hoarfrost” is understood to mean solid, essentially crystallized water - be it frost, snow, etc.
- the area of the underside 13 is at least as large as the motif to be printed on a textile 18.
- the hoarfrost layer 17 is between 1 and 8 mm thick and is made up of loose ice crystals.
- the hoarfrost layer 17 is the densest on the underside 13 and decreases in its density downwards. It essentially consists of water. This has been reflected there because the ambient air 16 contains water vapor and / or gaseous water and / or mist, which vaporous and / or gaseous and / or misty water, the closer it comes to the bottom 13, the more it cools down and then as Precipitation of ice crystals. However, the ice crystals can also be precipitated by means of resublimation, i.e. without first going through the liquid phase. The thermal conductivity of the hoarfrost layer 17 decreases from top to bottom.
- the freeze drying station 11 is stationary. In the cycle shown there is a pallet 19 and three sandwich layers below the freeze drying station 11, namely an upper aluminum layer 21, a middle plastic layer 22 and a lower aluminum layer 23.
- the pallet 19 can be moved up and to the right alone or in cycles with others.
- a tubular textile 24 is pushed tightly onto the pallet 19, so that at least its upper textile layer 26 lies horizontally and below the underside 13 evenly and without folds.
- the pallet 19 including the textile 18 was moved to the right by a screen printing station, not shown, arranged on the left, so that it lies below the underside 13.
- the upper layer 26 is at its upper area 28 have been printed with a certain water-soluble ink, which, however, essentially remains in the surface area of the upper layer 26 according to FIG seeped down.
- the pallet 19 is pressed upwards according to the arrow 27 with the lifting movement, and pressed against the hoarfrost layer 17 with 0 to 8 bar.
- water molecules from the partial volume of the hoarfrost layer 17 enter the upper region 28 and suddenly freeze there. None remains of the color in the upper area 28 on the hoarfrost layer 17, let alone on the underside 13.
- the palette 19 is first downward, then to the right and then again according to the arrow 29 moved upwards so that it lies directly under a screen printing station 31, which has a screen 32 according to the pattern.
- the second color can then be printed on top layer 26, which color is also water soluble.
- the screen is held in the usual way by a screen printing frame 33.
- the plastic layer 22 splits the aluminum mass of the pallet 19 into smaller partial masses and furthermore the heat transfer from the pallet 19 to the sieve 32 deteriorates. If one presses the upper layer 26 against the hoarfrost layer 17, the aluminum mass naturally also becomes cold. In the screen printing station 31 this metal mass would have the tendency to cool the screen 32.
- the sieve 32 freezes without special measures. The measures could, however, also consist in placing a further layer on the aluminum layer 21, e.g. made of plastic or textile. If the upper layer 26 is now printed a second time, the pallet 19 together with the textile 18 is moved into the second freeze drying station 34 and the second color is frozen there again.
- the upper layer 26 does not become cold at around -200 ° C., for example when operating with liquid nitrogen, but remains much warmer.
- the very cold nitrogen causes the hoarfrost layer 17 to grow again and again even at relatively high cycle speeds.
- the ambient air 16 is hardly or no water is withdrawn, because the water of the respective melting rime layer is not carried out, or in any case insignificant for this process, in which the machine stands.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94115030A EP0703076A1 (fr) | 1994-09-23 | 1994-09-23 | Procédé pour congeler des encres |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94115030A EP0703076A1 (fr) | 1994-09-23 | 1994-09-23 | Procédé pour congeler des encres |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0703076A1 true EP0703076A1 (fr) | 1996-03-27 |
Family
ID=8216315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94115030A Withdrawn EP0703076A1 (fr) | 1994-09-23 | 1994-09-23 | Procédé pour congeler des encres |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0703076A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114475037A (zh) * | 2021-11-22 | 2022-05-13 | 上达电子(深圳)股份有限公司 | 一种冷冻固化油墨产品加工工艺 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH277621A (de) * | 1949-09-12 | 1951-09-15 | Kuesters Eduard | Vorrichtung zum Drucken von Farben auf Warenbänder. |
WO1992014610A1 (fr) * | 1989-06-27 | 1992-09-03 | Poul Schack Petersen | Procede et machine d'impression pour l'impression polychrome, realisee de preference sur du tissu |
-
1994
- 1994-09-23 EP EP94115030A patent/EP0703076A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH277621A (de) * | 1949-09-12 | 1951-09-15 | Kuesters Eduard | Vorrichtung zum Drucken von Farben auf Warenbänder. |
WO1992014610A1 (fr) * | 1989-06-27 | 1992-09-03 | Poul Schack Petersen | Procede et machine d'impression pour l'impression polychrome, realisee de preference sur du tissu |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114475037A (zh) * | 2021-11-22 | 2022-05-13 | 上达电子(深圳)股份有限公司 | 一种冷冻固化油墨产品加工工艺 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE DK ES FR IT |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT DE DK ES FR IT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19960928 |