EP0502240B1 - Verfahren und Vorrichtung zum Waschen und Wechseln von Siebdruckrahmen in eine automatische Siebdruckmaschine - Google Patents

Verfahren und Vorrichtung zum Waschen und Wechseln von Siebdruckrahmen in eine automatische Siebdruckmaschine Download PDF

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Publication number
EP0502240B1
EP0502240B1 EP91113518A EP91113518A EP0502240B1 EP 0502240 B1 EP0502240 B1 EP 0502240B1 EP 91113518 A EP91113518 A EP 91113518A EP 91113518 A EP91113518 A EP 91113518A EP 0502240 B1 EP0502240 B1 EP 0502240B1
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EP
European Patent Office
Prior art keywords
screen frame
screen
washing
conveying passage
printing machine
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
Application number
EP91113518A
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English (en)
French (fr)
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EP0502240A1 (de
Inventor
Shiro Ichinose
Minoru Onda
Katsumi Dohi
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.)
Toshin Kogyo Co Ltd
Original Assignee
Toshin Kogyo Co Ltd
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
Application filed by Toshin Kogyo Co Ltd filed Critical Toshin Kogyo Co Ltd
Publication of EP0502240A1 publication Critical patent/EP0502240A1/de
Application granted granted Critical
Publication of EP0502240B1 publication Critical patent/EP0502240B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/003—Cleaning arrangements or devices for screen printers or parts thereof
    • B41F35/005—Cleaning arrangements or devices for screen printers or parts thereof for flat screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor

Definitions

  • This invention relates to a method and an apparatus for washing and exchanging of screen frames in an automatic screen printing machine, wherein the washing, drying, holding, and taking-out of a screen frame are effected efficiently according to an operation and work cycle of the printing machine.
  • Detaching, washing and moving operations for screen frames have been pointed out as the works which are most delayed in the automation and considered to be irrational in the printing step of an automatic screen printing machine.
  • the washing step alone has been almost automated.
  • the detachment from the printing machine and the mounting on the printing machine, the movement to the washing machine or the movement to a screen frame receiving track, and the water-wiping after washing and the drying are oil carried out by hand.
  • the amount of lots in textile printing decreased in the recent years and the number of colors to be printed tends to be increased.
  • the loss of time in exchanging and washing screen frames for the change of colors or patterns tends to increase, and the work efficiency decreases in the printing machine and as a result, the decrease in the print productivity becomes a problem.
  • Still another object of this invention is to provide an exchange apparatus in which the taking-out and holding of a screen frame can be carried out according to the sequence by which a screen is attached to an automatic screen printing machine.
  • a method of washing and exchanging screen frames in an automatic screen printing machine which comprises arranging a first screen frame conveying passage and a second screen frame conveying passage along the automatic screen printing machine, arranging regions of washing and drying the screen frame between the discharging end of the second screen frame conveying passage and the feed end of the first screen frame conveying passage, a temporary pooling portion through which the screen frame is movable between the discharge end portion and the washing and drying regions, a switch-over feed mechanism for the screen frame between the washing and drying regions and the feed end portion, and a holding portion through which the screen frame is movable and is led to the first screen frame conveying passage, transferring the screen frame used in the automatic printing machine to the second screen frame conveying passage and conveying said screen frame to the temporary pooling portion; feeding the screen frame pooled temporarily in the temporary pooling portion to the washing and drying regions to wash and dry the screen frame and discharging the washed screen frame to a switch-over feed mechanism, at the time of color changing, feeding the washe
  • an apparatus for washing and exchanging screen frames having a first screen frame conveying passage and a second screen frame conveying passage, arranged in the repeat feeding direction of an automatic screen printing machine, and a washing apparatus and a drying apparatus for a screen frame, arranged between the discharge end portion of the second screen frame conveying passage and the feed end portion of the first screen frame conveying passage, wherein a temporary pooling apparatus for the screen frame is arranged for movably supporting the screen frame between the discharge end portion and the washing and drying apparatuses, and a rotating feed apparatus is arranged for half-rotating the screen frame from the temporary pooling apparatus to the washing and drying apparatuses, a screen frame turning round apparatus for turning round the washed screen frame is arranged between the washing and drying apparatuses and the feed end portion, and a switch-over feed mechanism is arranged for switching over the movement of the screen frame, and a holding apparatus for movably holding the screen frame is connected to the switch-over feed mechanism.
  • a first characteristic feature of the screen frame washing and exchanging method and apparatus of this invention resides in that a first screen frame conveying passage and a second screen frame conveying passage are arranged along a repeat feed direction of the automatic screen printing machine, and regions for washing and drying the screen frame are disposed between the discharge end portion of the second screen frame conveying passage and the feed end portion of the first screen frame conveying passage.
  • All of such operations as mounting and dismounting of a screen frame for pattern changing on the automatic screen printing machine, exchanging of a screen frame and pattern changing on the same screen are started on the mounting and dismounting operations of the screen frame to the automatic screen printing machine.
  • the mounting and dismounting operations become possible by a screen frame handling apparatus at any desired position of the automatic screen printing machine. The delivery of the screen to and from this mounting or dismounting position can be conducted easily without a loss of time.
  • the screen frame to be dismounted from the automatic screen printing machine inevitably has a color paste adhering thereto. Hence, when color changing is performed on the same screen or when a screen is held, the adhering paste should be removed.
  • the washing and drying apparatuses for the screen frame are provided in the vicinity of the discharge end of the second screen frame conveying passage. Therefore, the screen frame is washed and dried at the same time as the delivery of the screen, and for washing and drying, particular labors or time is not necessary.
  • the washed and dried screen frame is again fed to an arbitrary position of the automatic screen printing machine through the first screen frame conveying passage.
  • the second characteristic feature of the method and apparatus of this invention is that a temporary pooling portion through which the screen frame is movable is provided between the discharge end portion of the second screen frame conveying passage and the washing and drying regions of the screen frame.
  • This pooling portion makes it possible to separate the screen frame washing and drying steps and the screen frame discharging and feeding steps, and while the discharging of the screen frame used is carried out on one hand, the washing and drying of a screen frame to which a color paste adheres can be carried out sufficiently with an ample time.
  • a third characteristic feature of the method and apparatus of this invention is that the screen frame switch-over feed mechanism is provided between the washing and drying regions and the feed end portion of the first screen frame conveying passage, and the holding portion having a movable screen frame, which joins to the screen frame feed mechanism, is also provided.
  • the screen frames after washing and drying must be re-distributed to the automatic screen printing machine at the time of color changing (A), and at the time of pattern changing, the used screen frames must be held (B). Furthermore, at the time of pattern changing, it is necessary to take out a new screen frame. Since in this invention the screen frame switch-over feed mechanism is provided between the washing and drying regions for the screen frames and the feed end portion of the first screen frame conveying passage, the above-mentioned three operations become possible. Furthermore, since the holding portion where the screen frame is movable or the temporary pooling portion is provided, the screen frames can be held and taken out very smoothly without any time loss.
  • the foregoing features relate to one another, and in color changing, the washed screen frame is fed to a predetermined position of the automatic screen printing machine or its vicinity from the switch-over feed mechanism through the first screen frame conveying passage.
  • the screen frame in the holding portion is fed to a predetermined position of the automatic screen printing machine or its vicinity through the switch-over feed mechanism or the first screen frame conveying passage, and at the same time, the washed screen frame can be received in the holding portion through the switch-over feed mechanism.
  • the foregoing operations are synthetically combined, and the efficiency and labor of operations necessarily involved in the automatic screen printing, such as the exchanging, washing, drying, holding and taking-out of screen frames, particularly the automation thereof, become possible, and increase of the operational efficiency and rationalization of the printing machine can be attained.
  • Figure 1 is a side elevation of a screen frame washing and exchanging apparatus of an automatic screen printing machine according to the present invention.
  • the automatic screen printing device 1 consists of an endless belt 4 for supporting and intermittently or continuously feeding a textile cloth 5 in a repeat feeding direction, a textile cloth introducing apparatus 2 for introducing the textile cloth 5 to the automatic screen printing machine, an adhering roller 3 for making the textile cloth adhere to the endless belt 4, and a screen frame 6 for applying a color paste to the textile cloth 5 on the endless belt 4.
  • a first screen frame conveying passage 9, 10 and a second screen frame conveying passage 7, 8 are provided.
  • the first screen frame conveying passage 9, 10 is composed of an upper guide rail 9, and an upper belt conveyer 10 supporting and driving the screen frame along this guide rail.
  • the second screen frame conveying passage 7, 8 consists of a lower guide rail 7 and a lower belt conveyer 8 which supports and drives the screen frame along this guide rail.
  • a washing apparatus 31 and a drying apparatus 41 for the screen frame are provided between the discharge end portion of the second screen frame conveying passage 7, 8 and the feed end portion of the first screen frame conveying passage 9, 10.
  • the washing apparatus 31 consists of a belt conveyer 32 for holding and conveying the screen frame and washing units 33 provided on the upper and lower sides of the screen frame.
  • a circulating shower pipe 34 is provided on the upstream side and a pure water shower pipe 37 is provided on the downstream side, and intermediate between them, an upper brush roller 35 and a lower brush roller 36 are provided so as to wash out the color paste adhering to the screen surface.
  • the drying apparatus 41 there is disposed the drying apparatus 41.
  • the drying apparatus 41 consists of a belt conveyer 42 for holding and conveying the screen frame and air nozzles 43 provided on the upper and lower sides of the screen frame.
  • the air nozzle is for drying up the water droplets adhering to the screen.
  • the air may be air at room temperature or hot air.
  • a temporary pooling device 11 for the screen frame which device movably supports the screen frames.
  • the temporarily pooling apparatus 11 for the screen frame a so-called lifting stocker
  • This apparatus is provided with a lifting conveyer 12 elevating stepwise a screen frame in its interior and a conveyer driving system 13 for driving the conveyer.
  • a thrust apparatus 14 for thrusting out the screen frame which reaches the highest portion.
  • a rotating feed apparatus (rotary unit) 21 is disposed for half-rotating the screen frame 6 from the temporary pooling apparatus 11 to feed it to the washing and drying apparatuses 31 and 41. Since a color paste adhere in a large amount to the upper surface of the screen, by turning this side and washing it, the removal and washing of the color paste can be performed effectively.
  • the rotating feed apparatus 21 is a rotary unit composed of a pair of belt conveyers 23 holding a screen unit and a rotary frame 22 which rotatably supports the belt conveyer.
  • the pair of belt conveyer 23 receive the screen frame 6 from the temporary pooling apparatus 11, and is half-rotated and is driven to feed the screen frame to the washing and drying apparatuses 31 and 41.
  • a screen frame reversing apparatus rotary frame 52 for reversing a washed screen frame to the original state and a switch-over feed mechanism 51 for switching-over the movement of a screen frame are arranged between the washing and drying apparatuses 31 and 41 and the feed end portion of the first screen frame conveying passage 9, 10.
  • the screen frame reversing apparatus 52 is built in the switch-over feed mechanism (lifting rotary unit) 51.
  • This reversing apparatus 52 is provided with a pair of belt conveyers 53 movable to and fro, which is disposed rotatably to the machine frame of the switch-over feed mechanism 51 and elevatably by a roller chain 55.
  • a driving device 54 is provided to drive the roller chain 55.
  • the switch-over feed mechanism 51 is switched over in the driving so that the following three actions are done.
  • (I) When the screen frame 6 is received from the drying apparatus 41 and the pair of belt conveyers is half-rotated, it is elevated by the roller chain 55 and the screen frame is fed to the feed end portions of the first screen frame conveying passage 9, 10.
  • (II) The pair of belt conveyers 53 receives the screen frame 6 from the drying apparatus 41, and is then half-rotated. It is then driven horizontally and feeds the screen frame to a screen frame holding apparatus (stocker unit) 61.
  • the pair of belt conveyers 53 receives the screen frame 6 from the screen frame holding apparatus 61, and without half-rotation, it is elevatingly driven by the roller chain 55 and feeds the screen frame to the feed end portion of the first screen frame conveying passage 9, 10.
  • the screen frame holding apparatus 61 which supports a screen movably is connected to the switch-over feed mechanism 51 which switches over the movement of the screen frame.
  • the holding apparatus is composed of a stocker unit.
  • a lifting frame 62 supporting the screen frame is provided elevatingly by a ball screw 63 to be driven by a driving apparatus 64.
  • screen frames for pattern changing are received according to the sequence of arrangement to the automatic screen printing machine, and when they are elevated to the uppermost position by the lifting frame, they are transferred to the belt conveyer 53 by the thrust apparatus 65.
  • the used screen frames are received according to the arrangement to the screen printing machine.
  • the stocker unit 61 is fixed, and the laminated screen frames can be mounted or dismounted.
  • the stocker unit 61 may be movably mounted.
  • the structure and operation of the printing machine such as the automatic screen printing apparatus 1 and the cloth introducing apparatus 2, are known, and these known ones may be used.
  • the lower belt conveyor 8, the upper belt conveyor 10 and belt conveyers 23, 32, 42 and 53 are made of a resin belt having a narrow width, and those on which both sides of the screen frame are carried and conveyed are preferred. By this, the receipt and delivery of screen frames among the apparatuses, and their washing and drying can be carried out without any hindrance.
  • a complete cover, not shown, to eliminate dropped color pastes and dirty waters is provided below each of the lower guide rail 7, the lifting stocker 11, the rotary unit 21, the washing apparatus 31, and the drying apparatus 41.
  • Elevating and lowering machines such as the lifting conveyer 12 of the lifting stocker (pooling device) 11, the roller chain 55 of the lifting rotary unit 51, and the ball screw 63 of the stocker unit 61 are not limited to these specific examples, and may be other suitable devices.
  • the specific embodiment shown in the drawing is one in which the apparatus of this invention is disposed in the front portion of the printing machine (on the side of the introduction apparatus), but it may also be disposed in the rear portion of the printing machine (on the side of the dryer).
  • the driving mechanisms and control apparatuses are disposed for driving and controlling every apparatus to cope with the operational and working cycle. These driving mechanisms and control devices may be known ones, and their illustration and explanation is omitted.
  • the screen frame exchanging apparatus of the invention is provided with the above-mentioned mechanisms, and these mechanisms may be operated by manual operation, mechanically, or by a hydraulic circuit or an electrical circuit.
  • the driving of these mechanisms may be automatically controlled by the assistance of a computer or a sequencer, and it is possible to exchange, wash, dry, hold, and take out screen frames automatically according to the operational and working cycle of the automatic screen printing machine. Holding and taking-out of screen frames can be performed at the positions of the first screen frame conveying passage 9, 10, the positions of the second screen frame conveying passage 7, 8, or intermediate portions thereof.
  • the second screen frame conveying mechanisms are arranged in the lower portion and the first screen frame conveying passage are arranged in the upper portion.
  • the exchanging, washing, drying, holding and discharging of screen frames can be carried out efficiently without a loss of time according to the operation and work cycle of the automatic screen printing machine.
  • various operations in the screen printing for example, when colors are changed by using the same pattern, operations of taking out, washing and drying used screen frames and returning them to the same position, or when screen printing of one pattern with all colors is over, operations of taking out the used screen frames, washing and drying them and holding them in the holding rack apparatus, and when screen printing with a new screen is to be begun, operations of taking out the screen frames from the holding rack apparatus, and delivering them to a predetermined position of the screen printing machine, can be carried out with a high efficiency according to the program of the screen printing operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Screen Printers (AREA)
  • Coloring (AREA)

Claims (3)

  1. Verfahren zum Waschen und Wechseln von Siebdruckrahmen (6) in einer automatischen Siebdruckmaschine (1), gekennzeichnet durch
    Anordnen eines ersten Siebdruckrahmen-Transportdurchgangs (9, 10) und eines zweiten Siebdruckrahmen-Transportdurchgangs (7, 8) entlang der automatischen Siebdruckmaschine (1);
    Anordnen von Bereichen zum Waschen und Trocknen des Siebdruckrahmens (6) zwischen dem Entnahmeende des zweiten Siebdruckrahmen-Transportdurchgangs (7, 8) und dem Zufuhrende des ersten Siebdruckrahmen-Transportdurchgangs (9, 10), eines temporären Sammelbereichs, durch den der Siebdruckrahmen (6) zwischen dem Entnahmeendbereich und den Wasch- und Trocknungsbereichen bewegbar ist, eines Umschaltzufuhrmechanismus (51) für den Siebdruckrahmen (6) zwischen den Wasch- und Trocknungsbereichen und dem Zufuhrendbereich und eines Haltebereichs, durch den der Siebdruckrahmen (6) bewegbar ist und zum ersten Siebdruckrahmen-Transportdurchgang (9, 10) geführt wird;
    Überführen des in der automatischen Siebdruckmaschine (1) benutzten Siebdruckrahmens (6) auf den zweiten Siebdruckrahmen-Transportdurchgang (7, 8) und Transportieren des Siebdruckrahmens (6) zum temporären Sammelbereich;
    Zuführen des temporär im temporären Sammelbereich gesammelten Siebdruckrahmens (6) zu den Wasch- und Trocknungsbereichen, um den Siebdruckrahmen (6) zu waschen und zu trocknen und Entladen des gewaschenen Siebdruckrahmens (6) in einen Umschaltzufuhrmechanismus (51);
    zum Zeitpunkt des Farbwechsels Zuführen des gewaschenen Siebdruckrahmens (6) aus dem Umschaltzufuhrmechanismus (51) in eine vorbestimmte Position der automatischen Siebdruckmaschine (1) oder in die Nähe davon durch den ersten Siebdruckrahmen-Transportdurchgang (9, 10); und
    zum Zeitpunkt des Musterwechsels Zuführen des im Haltebereich befindlichen Siebdruckrahmens (6) zu einer vorbestimmten Position der automatischen Siebdruckmaschine (1) oder in die Nähe davon durch den Umschaltzufuhrmechanismus (51) und den ersten Siebdruckrahmen-Transportdurchgang (9, 10) und Überführen des gewaschenen Siebdruckrahmens (6) in den Haltebereich durch den Umschaltzufuhrmechanismus (51) und Halten des gewaschenen Siebdruckrahmens (6) im Haltebereich.
  2. Verfahren nach Anspruch 1, wobei der temporär im Sammelbereich gesammelte Siebdruckrahmen (6) einer Halbdrehung unterzogen wird, um ihn den Wasch- und Trocknungsbereichen zuzuführen, und der gewaschene Siebdruckrahmen (6) gewendet wird, um ihn in den ersten Siebdruckrahmen-Transportddurchgang (9, 10) auszustoßen.
  3. Vorrichtung zum Waschen und Wechseln von Siebdruckrahmen (6) mit einem ersten Siebdruckrahmen-Transportdurchgang (9, 10) und einem zweiten Siebdruckrahmen-Transportdurchgang (7, 8), die in der Wiederholungszufuhrrichtung einer automatischen Siebdruckmaschine (1) angeordnet sind, und einer Waschvorrichtung (31) und einer Trocknungsvorrichtung (41) für einen Siebdruckrahmen (6), die zwischen dem Entnahmeendbereich des zweiten Siebdruckrahmen-Transportdurchgangs (7, 8) und dem Zufuhrendbereich des ersten Siebdruckrahmen-Transportdurchgangs (9, 10) angeordnet sind, wobei
    eine temporäre Sammelvorrichtung (11) zum beweglichen Halten des Siebdruckrahmens (6) zwischen dem Entnahmeendbereich und den Wasch- und Trocknungsvorrichtungen (31, 41) angeordnet ist, und eine Drehzufuhrvorrichtung (21) zur Durchführung einer Halbdrehung des Siebdruckrahmens (6) von der temporären Sammelvorrichtung (11) zu den Wasch- und Trocknungsvorrichtungen (31, 41) angeordnet ist;
    eine Siebdruckrahmen-Wendevorrichtung (52) zum Wenden des gewaschenen Siebdruckrahmens (6) zwischen den Wasch- und Trocknungsvorrichtungen (31, 41) und dem Zufuhrendbereich angeordnet ist;
    ein Umschaltzufuhrmechanismus (51) zum Umschalten der Bewegung des Siebdruckrahmens (6) angeordnet ist; und
    eine Haltevorrichtung (61) zum beweglichen Halten des Siebdruckrahmens (6) mit dem Umschaltzufuhrmechanismus (51) verbunden ist.
EP91113518A 1991-02-22 1991-08-12 Verfahren und Vorrichtung zum Waschen und Wechseln von Siebdruckrahmen in eine automatische Siebdruckmaschine Expired - Lifetime EP0502240B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP48716/91 1991-02-22
JP3048716A JPH07102702B2 (ja) 1991-02-22 1991-02-22 自動スクリーン捺染機におけるスクリーン枠の洗浄交換方法及び交換装置

Publications (2)

Publication Number Publication Date
EP0502240A1 EP0502240A1 (de) 1992-09-09
EP0502240B1 true EP0502240B1 (de) 1995-11-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113518A Expired - Lifetime EP0502240B1 (de) 1991-02-22 1991-08-12 Verfahren und Vorrichtung zum Waschen und Wechseln von Siebdruckrahmen in eine automatische Siebdruckmaschine

Country Status (4)

Country Link
EP (1) EP0502240B1 (de)
JP (1) JPH07102702B2 (de)
KR (1) KR960012754B1 (de)
DE (1) DE69115022T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106042622A (zh) * 2016-06-12 2016-10-26 绍兴市天基印刷材料厂 一种蓝色色浆制备及印花烘干工艺

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0728637U (ja) * 1993-11-09 1995-05-30 株式会社シンワ製作所 型枠類洗浄機
AT403029B (de) * 1994-12-12 1997-10-27 Zimmer Maschinenbau Gmbh Speichereinrichtung für rundschablonen
AU2000243937A1 (en) * 2000-05-10 2001-11-20 Holdt Repro A/S Method for introducing and removal of printing blocks into and out from a washing machine for printing blocks and device for performing the method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2722060C2 (de) * 1977-05-16 1982-10-07 Mathias 4815 Schloss Holte Mitter Rahmen für ebene Siebschablonen zur übereinander gestapelten Anordnung mehrerer Schablonen in einer Siebdruckmaschine
JPS60184850A (ja) * 1984-02-13 1985-09-20 Toshin Kogyo Kk フラツトスクリ−ン捺染機におけるスクリ−ン型枠の洗浄方法及び洗浄ユニツト

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106042622A (zh) * 2016-06-12 2016-10-26 绍兴市天基印刷材料厂 一种蓝色色浆制备及印花烘干工艺

Also Published As

Publication number Publication date
KR920016252A (ko) 1992-09-24
JPH07102702B2 (ja) 1995-11-08
DE69115022D1 (de) 1996-01-11
JPH04267154A (ja) 1992-09-22
DE69115022T2 (de) 1996-04-18
KR960012754B1 (ko) 1996-09-24
EP0502240A1 (de) 1992-09-09

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