Pre-treatment liquid and ink set

A technology of pretreatment liquid and water-based inkjet ink, applied in the direction of ink, duplication/marking method, application, etc., can solve the problems of unsuitable for actual use, long-term printing, poor operability, etc., and achieve excellent storage stability, durability Excellent blocking and drying properties

Active Publication Date: 2020-08-21
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned printing method cannot print for a long time, and the operability is also very poor, so there is a high possibility that it is not suitable for practical use.

Method used

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  • Pre-treatment liquid and ink set
  • Pre-treatment liquid and ink set
  • Pre-treatment liquid and ink set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～67

[0326] [Examples 1-67, Comparative Examples 1-14]

[0327] 1. Manufacture of pretreatment solution

[0328]

[0329] The following materials were put into a mixing container equipped with a mixer, and mixed and stirred (premixed) for 1 hour. Thereafter, main dispersion was performed using a 0.6-L Dyno Mill filled with 1,800 g of zirconia beads with a diameter of 1 mm to obtain a titanium oxide dispersion (50% pigment concentration).

[0330]

[0331]

[0332] In the above production examples, TIPAQUE CR-50-2 is titanium oxide manufactured by Ishihara Sangyo Co., Ltd., and BYK-190 is an aqueous solution of styrene-maleic acid resin manufactured by BYK Chemical Corporation.

manufacture example

[0334] After putting the following materials into the mixing container equipped with the stirrer, mixing and stirring for 1 hour, it heated to 90 degreeC, and mixed for 1 hour further. Thereafter, it was left to cool to room temperature, and adjusted with ion-exchanged water so that the solid content became 25%, thereby obtaining a PVA103 varnish.

[0335] Kuraray Poval PVA103 25 parts

[0336] 75 parts of ion-exchanged water

[0337] In the above production example, Kuraray Poval PVA103 is a polyvinyl alcohol resin (water-soluble resin, melting point: 200° C.) manufactured by Kuraray Corporation.

[0338]

[0339] The following materials were put into the mixing container equipped with the stirrer, and after mixing at room temperature (25 degreeC) for 1 hour, it heated to 50 degreeC, and further mixed for 1 hour. Next, the mixture was cooled to room temperature, and then filtered through a membrane filter with a pore size of 1 μm to obtain a pretreatment liquid 1 .

[03...

Embodiment 68～160、 comparative example 15～28

[0415] 3. Production example of membrane base material with pretreatment solution

[0416] After coating the pretreatment solution prepared above with a wet film thickness of 4.0 ± 0.2 μm on the following film substrates using the K control coater K202 manufactured by Matsuo Sangyo Co., Ltd., wire bar No. 0, the pretreatment solution coated with the above The film base material was put into an air oven at 70° C. and dried for 3 minutes to prepare a film base material to which the pretreatment liquid was applied.

[0417]

[0418] OPP: Biaxially oriented polypropylene film "OPU-1" (thickness 20 μm) manufactured by Mitsui Chemicals East Cello Co., Ltd.

[0419] PET: Polyethylene terephthalate film "LUMIRROR T60" (thickness: 25 μm) manufactured by Toray Corporation

[0420]

[0421] Install an inkjet head KJ4B-QA (manufactured by Kyocera Corporation, design resolution 600dpi) on the upper part of the conveyor belt capable of conveying the substrate, and place the water-based...

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Abstract

This pre-treatment liquid can be used together with an aqueous inkjet ink containing a pigment and water, and contains resin fine particles (A), a surfactant (B), a coagulant (C) and water. The surfactant (B) contains a polyoxyalkylene alkyl ether (b-1). The coagulant (C) contains a polyvalent metal salt and / or a cationic polymer compound which has a moisture absorption rate of 75 mass% or less ata temperature of 40 deg C and a relative humidity of 80%.

Description

technical field [0001] The present invention relates to a pretreatment liquid and an ink set containing the same. Background technique [0002] The difference between digital printing and existing plate printing such as offset printing and gravure printing is that it does not require a plate-making film or a printing plate. Therefore, using digital printing, it is possible to reduce costs and cope with printing of small batches and multiple varieties. [0003] In inkjet printing, which is one type of digital printing, characters or images are obtained by directly discharging and adhering ink droplets from very fine nozzles on a printing substrate. The inkjet printing method has the advantages of low noise, good operability, and easy colorization of the device used, and is widely used as an output machine in offices and homes. In addition, due to the improvement of inkjet technology, it has also begun to be used as a digital printing output machine in industrial application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/00B41J2/01C09D11/322C09D11/54
CPCB41J2/01B41M5/00C09D11/322C09D11/54B41M5/0017B41M5/52B41M5/5218B41M5/5245B41M5/5227B41M5/502C09D123/30
Inventor 杉原真广佐佐木佑树手塚俊博小池隆明今里安纪子菊田直也田边朋惠
Owner TOYO INK SC HOLD CO LTD
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