WO2011110059A1 - 一种印刷工艺及其所使用的印刷助剂 - Google Patents

一种印刷工艺及其所使用的印刷助剂 Download PDF

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Publication number
WO2011110059A1
WO2011110059A1 PCT/CN2011/070191 CN2011070191W WO2011110059A1 WO 2011110059 A1 WO2011110059 A1 WO 2011110059A1 CN 2011070191 W CN2011070191 W CN 2011070191W WO 2011110059 A1 WO2011110059 A1 WO 2011110059A1
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WO
WIPO (PCT)
Prior art keywords
printing
substrate
aid
liquid
normal temperature
Prior art date
Application number
PCT/CN2011/070191
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English (en)
French (fr)
Inventor
郑旭东
陈善忠
Original Assignee
上海东星环保油墨有限公司
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 上海东星环保油墨有限公司 filed Critical 上海东星环保油墨有限公司
Priority to US13/577,574 priority Critical patent/US9365065B2/en
Priority to EP11752802.6A priority patent/EP2546069B1/en
Priority to JP2012524104A priority patent/JP5552535B2/ja
Publication of WO2011110059A1 publication Critical patent/WO2011110059A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0011Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00Inking and printing with a printer's forme
    • B41M1/26Printing on other surfaces than ordinary paper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/10Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00Inking and printing with a printer's forme
    • B41M1/26Printing on other surfaces than ordinary paper
    • B41M1/30Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
    • B41M1/305Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials using mechanical, physical or chemical means, e.g. corona discharge, etching or organic solvents, to improve ink retention
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0011Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
    • B41M5/0017Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying

Definitions

  • the present invention relates to the field of printing, and more particularly to a printing process and the use of a printing aid used therein.
  • the printing technology of one of the four inventions has made great progress since its invention.
  • the existing printing process generally includes the following steps: 1.
  • the substrate is conveyed, prepared, and ready to enter a monochrome or multi-color printing process.
  • the first color (or background) printing Transfer the ink from the first printing station to the substrate through the printing plate (or net).
  • Drying (forced or naturally evaporated and dried): Use moisture, ventilation, etc. to make the moisture and organic solvent in the ink as volatile as possible.
  • Second color printing The ink of the second printing station is transferred to the substrate through the printing plate (or net), printed to a suitable position and then dried.
  • the object of the present invention is to overcome the deficiencies in the prior art and to provide a printing process and a printing aid used therein to solve the problem of cracking on the surface of a substrate having a rough surface, Technical problems with white or missing paint.
  • the present invention employs the following printing process: a printing process including plate loading, inking, substrate transport and embossing, characterized by prior to the embossing point of an optional printing station A printing aid is applied separately to the substrate to be embossed (i.e., the substrate waiting for the printing of the selected printing station), the printing aid containing water and/or organic matter which is liquid at normal temperature and pressure.
  • the loading, the inking, the conveyance of the substrate, and the imprinting are all carried out by a conventional method.
  • the printing station refers to: a unit having functions of substrate conveyance, inking, embossing, drying, etc. on a printing press, having printing plates, pressure rollers, inking devices, drying devices, transmission devices, etc., printing
  • the machine will generally have one or more printing stations.
  • the embossing point is a position in the printing station where the printing plate and the pressure roller come into contact with the substrate.
  • the application of a printing auxiliary agent alone means that the printing auxiliary agent is applied to the printing substrate by itself, and the application method of the auxiliary agent is different from the conventional application of the printing auxiliary agent as an auxiliary material to the ink to be applied to the printing substrate. the way.
  • the application of a printing aid alone on the substrate to be embossed prior to the optional printing station embossing point means any of the following: in a printing process with only one printing station Applying a printing aid separately to the partial or full area of the substrate to be embossed before the substrate to be embossed reaches the embossing point of the printing station; or, printing at a plurality of printing stations In the process, one or more printing stations are selected, and any one of the selected printing stations is imprinted without the printing station before the printing substrate that has not been imprinted by the printing station reaches the printing station A printing aid is applied separately on a partial or full area of the substrate.
  • the method of applying a printing aid separately on the substrate may be selected from printing, coating, spraying or dipping. After application of a printing aid to the substrate, it should be kept as wet as possible, and the printing of the selected printing station can be carried out without the printing aid being completely dried.
  • the total amount of the liquid in the printing aid is 0. 5-105 g / square meter of the substrate in the case of the substrate. Embossing.
  • the total amount of the water and the organic substance which is liquid at normal temperature and normal pressure is preferably 2. 5-30 g/m 2 of the substrate.
  • the preferred total holding amount of the substrate of different materials is slightly changed.
  • the nonwoven material substrate the preferred total holding amount is l_96g/m 2 substrate; for the textile material substrate, the preferred total holding amount 5-15 ⁇ / ⁇
  • the preferred total holding amount is 0.5-20 g/m 2 substrate; for the ceramic substrate, the preferred total holding amount is 5-50 g/m 2 substrate.
  • the control of the total amount of possession can be achieved by a person skilled in the art by the amount of the printing aid applied or by appropriate drying after application.
  • the order of printing, coating, spraying or dipping of the printing assistant and before the embossing point of the first printing station can be changed according to the characteristics of the printing color and the order of various monochrome printing. This process produces a large effect before the printing station embossing process which is most likely to be missed or missed.
  • the printing, coating, spraying or dipping of the printing aid is not limited to one time, and may be additionally or partially added at a suitable position as necessary.
  • the substrate may be various conventional substrates, and may be selected from the group consisting of a nonwoven material substrate, a textile material substrate, a paper substrate, a plastic substrate, a rubber substrate, and a ceramic substrate.
  • a nonwoven material substrate such as kraft paper, newsprint, printed paper, decorative paper, Daolin paper, coated paper, wrapping paper, poster stickers, raw paper, banknote paper, fiber fabric, non-woven fabric, building board, floor tiles, wall tiles, etc.
  • the printing process of the present invention is particularly suitable for use with the above-described substrates on uneven surfaces.
  • the printing process of the present invention can be applied to printing fields such as letterpress printing, gravure printing, orifice printing (screen or rotary screen), flexographic printing, and the like.
  • the key to the printing process of the present invention is the use of a key printing aid prior to the printing station imprinting process.
  • the printing aid can greatly increase the transfer rate of the ink.
  • the ink may be a variety of conventional inks, and the ink is a generic term for solvent inks, water-based inks, UV inks, and other liquid inks, and may be colored or colorless.
  • the printing aid needs to satisfy the following characteristics: 1.
  • the surface (layer) of the substrate can be wetted.
  • the present invention provides a printing aid which satisfies the above characteristics, and which comprises one or more of an organic substance which is liquid at normal temperature and pressure and water.
  • the printing aid can be a solution, a suspension or an emulsion.
  • the printing aid containing water and/or an organic substance which is liquid at normal temperature and normal pressure means that the printing auxiliary agent contains water or an organic substance which is liquid at normal temperature and normal pressure, or the printing auxiliary agent contains water and an organic substance which is liquid at normal temperature and normal pressure. .
  • the printing aid is water or a single organic substance which is liquid at normal temperature and pressure, or a plurality of organic substances which are liquid at normal temperature and normal pressure, and of course may also contain water and one or more liquids at normal temperature and pressure.
  • Organic matter Water and/or organic substances which are liquid at normal temperature and normal pressure may be mixed in any ratio.
  • the sum of the weight percentage of the water and the organic substance which is liquid at normal temperature and pressure in the printing aid is 50-100%, preferably 70-100%, more preferably 80-100%.
  • the printing aid is a homogeneous liquid.
  • the organic substance which is liquid at normal temperature and normal pressure is an organic solvent which is liquid at normal temperature and normal pressure.
  • the organic solvent which is liquid at normal temperature and pressure is selected from the group consisting of: aromatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbons, halides, alcohols, ethers, esters, ketones, phenols, diol derivatives which are liquid at normal temperature and pressure. Or a variety.
  • the organic solvent which is liquid at normal temperature and pressure may be selected from the group consisting of: methanol, ethanol, isopropanol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, dipropylene glycol methyl ether, dipropylene glycol diethyl ether, two Propylene glycol propyl ether, dipropylene glycol butyl ether, diethylene glycol methyl ether, diethylene glycol diethyl ether, diethylene glycol propyl ether, diethylene glycol butyl ether, and benzene, toluene, diphenylbenzene, acetone, butanone, One or more of cyclohexanone, ethyl acetate, propyl acetate, butyl acetate. Since the listed solvents alone can improve the printing quality of the uneven substrate, the selected solvents can be mutually miscible, which can improve the printing quality of the uneven substrate.
  • a resin, a cosolvent, a surfactant, an antifoaming agent, a masking agent, and a rheological agent may be added to the printing aid as needed.
  • the printing aid may or may not contain a resin for ink.
  • the printing aid is one of water, one of liquid organic substances at normal temperature and normal pressure, a plurality of homogeneous organic liquids in a liquid state at normal temperature and normal pressure, or an organic substance which is liquid at normal temperature and pressure.
  • One or more homogeneous mixtures with water A printing aid containing water and/or the organic substance which is liquid at normal temperature and pressure can improve the printing quality of various non-flat surface substrates.
  • the proportion of each component in the printing auxiliaries is not constant, and can be changed according to the characteristics of the substrate, the heating temperature of the printing machine, the hot air condition, the smear thickness, the printing speed, the spacing of the smear-printing machine, and the like.
  • a printing aid containing a plurality of components can be prepared by uniformly mixing the selected materials in proportion.
  • the printing aid and printing process described in the present invention can be applied to the printing of various substrates, and is particularly suitable for improving the printing quality of substrates.
  • the substrate is a non-woven material substrate, a textile material substrate, a paper substrate, a plastic substrate, a rubber substrate or a ceramic substrate, such as kraft paper, news paper, printing paper, Daolin paper, decorative paper, coated paper. , wrapping paper, placards, edging paper, banknote paper, fabrics, non-woven fabrics, building boards, floor tiles and wall tiles.
  • the printing aid can improve the transfer of the ink on the substrate, thereby improving the printing quality of the substrate.
  • the problem of improving the printing quality of the substrate refers to an improvement in the quality of the printed or leaked coating due to surface irregularity when the substrate is printed.
  • the printing aid can be applied prior to optional printing station embossing points in various substrate printing.
  • the printing aid is used by: applying a printing aid to the substrate separately prior to the printing point of any of the selected printing stations, the application method being selected from printing, coating, spraying or dipping.
  • the printing of the substrate to be embossed (waiting for the substrate imprinted by the selected printing station) is additionally applied before the embossing point of the printing station where the original printing process produces a missing or missing coating is added.
  • the process of additives After application of a printing aid to the substrate, it should be kept as wet as possible, and the printing of the selected printing station can be carried out without the printing aid being completely dried.
  • the water in the printing aid and the organic substance in the normal temperature and pressure are liquid.
  • the substrate is embossed with a total holding amount of 0.5-105 g/m 2 of substrate.
  • the preferred total holding amount is slightly changed.
  • the preferred total holding amount is l_96g/m 2 substrate; for textile material substrates, the preferred total retaining 5-15 ⁇ / ⁇
  • the amount of the substrate is 0. 5-15g / square meter, the total amount of the substrate is 0. 5-15g / square meter Substrate;
  • the preferred total holding amount is 0. 5-20g/m2 substrate; for ceramic substrates, the preferred total holding amount is 5-50g/m2 substrate.
  • the control of the total amount of possession can be achieved by a person skilled in the art by the amount of printing aid application or by appropriate drying.
  • the application of the printing aid can be carried out by printing, using an existing or additional printing station or apparatus of the printing press, or by hand, or by means of a conventional or additional means of the printing press.
  • the printing method of the substrate may be selected from various printing methods such as letterpress printing, gravure printing, flexographic printing or orifice printing (screen and screen printing).
  • the use of printing auxiliaries can greatly improve the printability of the substrate, and the transfer of the ink on the substrate is greatly improved.
  • the printing auxiliaries take into account the physical chemistry of the printing ink and the substrate.
  • Characteristics as long as the printing aid and the material and characteristics of the substrate are used, select the appropriate printing auxiliaries; and adjust the smudge according to the temperature and humidity of the printing site, heating and drying conditions, printing speed and other conditions to obtain the best of different substrates. Modification effect.
  • FIG. 1 Printing result of Example 2 25 times magnification ratio No drawing aid is applied to the left drawing, printing aid is applied to the right figure
  • FIG. 2 Printing result of Example 3 25 times magnification ratio Printing aid is applied, the printing aid is applied to the right.
  • Figure 3 Printing result of Example 4 25 times magnification ratio No printing aid is applied to the left figure, printing aid is applied to the right
  • the printing auxiliaries were prepared in the following weight percentage formulations.
  • Preparation method Mix the raw materials in proportions evenly.
  • Example 2 Using kraft paper as a substrate, printing with WA-20 color ink, printing with a gravure machine, printing speed of 60 m/min.
  • the printing process used was:
  • printing and printing of the printing aid using the first printing station of the printing machine, the printing aid of the formula 1 in the embodiment 1 printing 5. 3g / square meter onto the substrate, without drying, Then enter 3.
  • Example 3 The printing aid of the formula 3 of Example 1 is used. 2. 5g/, using a printing aid of the formula 3 of Example 1
  • the printing process is the same as that of the second embodiment except for the square meter, and the comparative printing process is also the same as the second embodiment.
  • the printed results are shown in Figure 2.
  • the coloring ratio of the printed matter after application of the printing aid was 100%, and the coloring ratio of the printed matter without using the printing aid was only 76% (please refer to the comparative photograph, and the X-Rite SP-62 spectrophotometer was used for the relative coloring power detection). .
  • the results show that the use of printing auxiliaries can significantly improve the problem of white spots and missing marks on the surface after printing.
  • Example 4 Using newsprint as a substrate, WA-20 plus 2% blue water-based color ink was used, and printing was performed by a gravure machine at a printing speed of 50 m/min. Except that the printing aid of Formulation 2 of Example 1 was used. The printing process was the same as in Example 2 except for lg/m 2 , and the comparative printing process was also the same as in Example 2. The printed results are shown in Figure 3. The coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 80% (please refer to the comparative photograph, and the X-Rite SP-62 spectrophotometer is used for the relative coloring power detection). . The results show that the use of printing auxiliaries can significantly improve the problem of white spots and missing marks on the surface of rough substrates after printing.
  • Example 5 Printing paper gravure printing A monochrome (blue) printing was performed on a 90 gram printing paper using a 4-color gravure printing machine. Before the coloring printing, the first position of the same gravure printing machine is used, 180-gauge gravure roll is installed, and the printing auxiliary agent (100% water) is printed in the ordinary printing mode. 6. 2g/m2, without drying, then enters the second position. The plate was fully printed with a 180-mesh gravure roll, and the finished print was a full, uniform blue color with no visible white-out. On the printed matter without the first printing aid, the visual inspection showed significant whitening. The coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without using the printing aid was only 57% (the X-Rite SP-62 spectrophotometer was used for the detection of the coloring power).
  • Example 6 Gravure printing of non-woven fabric Monochrome (brown) printing was carried out on a 147 g nonwoven fabric using a 4-color gravure printing machine. Before the coloring printing, the first position of the same gravure printing machine was used, 100-mesh gravure roll was installed, the printing auxiliary agent (ethanol) was 12g/m2 in the ordinary printing mode, the printing auxiliary was not dried, and then the second version was used. The gravure cylinder of the gravure plate was completely printed in brown, and the finished printed matter was a comprehensive, uniform brown color, and no visible whitening was observed by the naked eye. On the printed matter without the first printing aid, the visual inspection showed significant whiteout.
  • the printing auxiliary agent ethanol
  • the coloring ratio of the printed matter after application of the printing aid was 100%, and the coloring ratio of the printed matter without using the printing aid was only 39% (X-Rite SP-62 spectrophotometer was used for the detection of the coloring power).
  • the printing agent has a coloring rate of only 35-65%.
  • Example 7 Screen printing of non-woven fabric A dark blue color was printed on a non-woven fabric using a screen printing machine using a 300-mesh screen. Spraying the printing aid on the surface of the non-woven fabric before the coloring printing (Formulation 6 in Example 1) 12g/m2 causes the surface of the printing substrate to infiltrate, and then enters the normal dark blue full-print without drying, and immediately uses hot air. Blow dry, the finished printed matter has a clear color, and there is no leakage in the naked eye. On the printed matter without using the printing aid, the phenomenon of whitening can be clearly seen. The coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 54%.
  • Example 8 Flexographic printing of kraft paper was carried out using a three-color single-sheet flexographic printing press with a 200-mesh anilox roll on a kraft paper. Use the same before printing The first position of the flexographic printing machine, the printing auxiliaries are transferred to the printing part by ordinary flexographic printing (Formulation 4 of Example 1) 6. 7g/m2, without drying the printing auxiliaries, then in the first The second edition is overprinted in black. The finished color block is clear and full, with no whiteout at all. The coloring ratio of the printed matter after the pre-coating of the printing aid was 100, and the coloring ratio of the printed matter without the printing aid was only 51%. (The X-Rite SP-62 spectrophotometer was used for relative tinting strength detection).
  • Example 9 Circular Screen Printing of Nonwoven Fabric A six-color gravure rotary screen printing press was used to print a deep red color on a nonwoven fabric using a 150 mesh rotary screen. Before the color printing, using the first position of the same rotary screen printing machine, an 80-mesh gravure roll was installed, and the printing aid (Formulation 6 in the example) was applied by lifting the scraper 30 g/m 2 without drying. Then, it enters the second printing station and prints red with a 150-mesh circular net and immediately blows it with hot air. The finished printed matter is comprehensive and uniform red, and there is no obvious whitening in the naked eye. On the printed matter without using the printing aid, the whitening phenomenon is clearly seen.
  • the printing aid Formulation 6 in the example
  • the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 63%.
  • the X-Rite SP-62 spectrophotometer was used for relative tinting strength detection).
  • the coloring ratio of the printed matter without using the printing aid is only 52-74%.
  • Example 11 In the same manner as in Example 3, except that the substrate was replaced with 120 cotton cloths, the results showed that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 82. %.
  • Example 11 In the same manner as in Example 3, except that the substrate was replaced with an uneven foamed PVC coated paper, the results showed that the printing matter after the application of the printing aid had a coloring ratio of 100%, and the printing material without the printing aid was used. The coloring rate is only 65%.
  • Example 13 In the same manner as in Example 7, except that the substrate was replaced with a tile, the results showed that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 78%.
  • Example 13 In the same manner as in Example 7, except that the substrate was replaced with a tile, the results showed that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 78%.
  • Example 14 In the same manner as in Example 3, only the printing aid was changed to Formulation 7 in Example 1. As a result, it was found that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 93%.
  • Example 14
  • Example 15 In the same manner as in Example 3, only the printing aid was changed to Formulation 8 in Example 1. As a result, it was found that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 86%.
  • Example 15
  • Example 16 In the same manner as in Example 3, only the printing aid was changed to Formulation 9 in Example 1. As a result, it was found that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 79%.
  • Example 16
  • Example 4 In the same manner as in Example 4, only the printing aid was changed to Formulation 10 (3.5 g/m 2 ) in Example 1. As a result, it was found that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 76%.
  • Example 18 In the same way, after printing with benzene, toluene, diphenylbenzene, acetone, butanone, cyclohexanone, ethyl acetate, propyl acetate and butyl acetate, the printing results obtained are coated and printed.
  • the coloring ratio of the printed matter after the auxiliary agent was 100, and the coloring ratio of the printed matter without using the printing aid was 73-88%.
  • Example 17 In the same manner as in Example 4, only the printing aid was changed to Formulation 11 (3.3 g/m 2 ) in Example 1. As a result, it was found that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without the printing aid was only 79%.
  • Example 18 Example 18
  • Example 4 In the same manner as in Example 4, only the printing aid was changed to Formulation 12 (4 g/m 2 ) in Example 1. As a result, it was found that the coloring ratio of the printed matter after the application of the printing aid was 100%, and the coloring ratio of the printed matter without using the printing aid was only 83%.
  • those skilled in the art can further adjust the formulation of the printing auxiliary agent to obtain the best according to the printing process of the present invention according to the printing machine speed, the heating condition and the sending and discharging conditions.
  • the effect of this adjustment is also within the scope of the present invention.

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  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

一种印刷工艺及其所使用的印刷助剂
技术领域: 本发明涉及印刷领域, 尤其涉及一种印刷工艺及其所使用的印刷助剂的应用。
背景技术: 四大发明之一的印刷技术自发明以来, 已经有了长足的进步。 现有的印刷工序一般包括下列步骤: 1, 承印物输送、 备印, 准备进入单色或多色印刷过程。 2, 第一色 (或底色) 印刷: 将第一印刷站的印墨通过印版 (或网) 转印到承印物上。 3, 干燥 (强制或自然挥发干燥): 利用加温、 通风等手段, 使印墨中的水分和有机溶剂尽可能地挥发干燥。 4, 第二色印刷: 将第二印刷站的印墨通过印版 (或网) 转印到承印物上, 印刷到合适的位置并随即进行干 燥。
5, 而后进行其他印刷工序。 现有的印刷工艺中, 如果承印物 (纸张、 织物、 无纺纸、 塑料薄膜等) 的表面平整度较 差, 将直接影响着印刷质量。 对于牛皮纸、 纺织物、 无纺纸等表面粗糙的承印物, 由于其表 面不能与印版完全接触, 印刷后必然会出现断线、 留白等现象, 严重地影响着印刷的精度, 妨碍着它们向高端发展。 一般情况下, 人们通过改善造纸工艺, 提高纸张平整度来解决上述问题。 但是这种对策 不但提高了纸张的成本, 而且也无法完全解决印刷的质量问题。 处于建筑装饰行业高端产品的无纺织物材料的印刷也遇到同样的问题, 因为该材料表面 是不规则的纤维结构, 给人以高雅艺术品的感觉。 但是正因为其表面的高低凹凸, 导致承印 物着墨时其表面的低凹部与印辊接触不良, 被印刷部分出现细小的断裂或大片的白点, 尤其 对深色背景的图案, 会明显影响总体的印刷效果。
发明内容: 本发明的目的是为了克服现有技术中的缺陷,提供一种印刷工艺及其所使用的印刷助剂, 以解决现有技术中, 在表面粗糙的承印物表面印刷会出现断裂、 留白或漏涂的技术问题。 为了解决上述技术问题, 本发明采用了下述印刷工艺: 一种印刷工艺, 包括装版、 上墨、 承印物的输送及压印, 其特征在于, 在任选的印刷站 的压印点之前, 在待压印的承印物 (即为等待所选印刷站压印的承印物) 上单独施加一种印 刷助剂, 所述印刷助剂含有水和 /或常温常压下呈液态的有机物。
所述装版、 上墨、 承印物的输送及压印均采用常规方法。
所述印刷站 (Printing Station) 是指: 印刷机上具有承印物输送、 上墨、 压印、 干燥等 功能的单元, 具有印版、 压辊、 上墨装置、 干燥装置、 传动装置等部件, 印刷机一般会有一个 或多个印刷站。
所述压印点为印刷站中, 印版和压辊与承印物发生接触的位置。
所述单独施加一种印刷助剂, 是指印刷助剂是被独自施加到承印物上的, 这种助剂的施 加方法不同于常规需将印刷助剂作为辅料混入印墨施加于承印物的方式。
所述的在任选的印刷站压印点之前, 在待压印的承印物上单独施加一种印刷助剂, 是指 以下情况之中的任一: 在仅有一个印刷站的印刷工艺中, 在待压印的承印物到达该印刷站的压印点之前, 在待压 印的承印物的局部或全面积上, 单独施加一种印刷助剂; 或者, 在有多个印刷站的印刷工艺中, 选择一个或多个印刷站, 对所选的任一印刷站, 均 在未经该印刷站压印的承印物到达该印刷站的压印点之前, 在未经该印刷站压印的承印物的 局部或全面积上, 单独施加一种印刷助剂。 在承印物上单独施加一种印刷助剂的方法可选自印刷、 涂布、 喷淋或浸渍。 在承印物上施加一种印刷助剂后,应尽可能保持其湿润状态,在所述印刷助剂没有被完全 干燥的情况下进行所选印刷站的压印。
在承印物上单独施加一种印刷助剂后,在印刷助剂中的水和常温常压下为液态的有机物的 总保有量为 0. 5-105g/平方米承印物的情况下对承印物进行压印。所述水和常温常压下为液态 的有机物的总保有量优选 2. 5-30g/平方米承印物。 对不同材质的承印物, 其优选的总保有量 略有变化, 对无纺材料承印物, 较佳的总保有量为 l_96g/平方米承印物; 对纺织材料承印物, 较佳的总保有量为 5-105g/平方米承印物;对纸张承印物,较佳的总保有量为 l_20g/平方米承 印物; 对塑料承印物, 较佳的总保有量为 0. 5-15g/平方米承印物; 对橡胶承印物, 较佳的总 保有量为 0. 5-20g/平方米承印物; 对陶瓷承印物, 较佳的总保有量为 5-50g/平方米承印物。 对于总保有量的控制,本技术领域的技术人员可以通过印刷助剂施加量或者施加后进行适当干 燥等方式来实现。
本发明的印刷工艺中, 印刷、 涂布、 喷淋或浸渍印刷助剂的顺序并首个印刷站的压印点 之前, 可根据印刷花色的特点、 各种单色印刷的顺序进行变更。 该工艺放在最容易漏印或漏 涂的印刷站压印工序前能产生较大的效果。 此外, 印刷助剂的印刷、 涂布、 喷淋或浸渍也不 局限于一次, 必要时可以根据需要在合适的位置进行全面或局部的追加。 在所有印刷站压印工序结束后, 还可进行各种常规的后续工序, 如干燥、 固化、 切边、 分卷、 包装等等步骤。 本发明中, 所述承印物可为各种常规承印物, 可选自无纺材料承印物、 纺织材料承印物、 纸张承印物、 塑料承印物、 橡胶承印物和陶瓷承印物等。 如牛皮纸、 新闻纸、 印书纸、 装饰 纸、 道林纸、 铜版纸、 包装纸、 招贴纸、 毛边纸、 钞券纸、 纤维织物、 无纺织物、 建筑板材、 地砖、 墙砖等等。 本发明的印刷工艺尤其适用于不平整表面的上述承印物。 本发明的印刷工艺可以应用于凸版印刷、 凹版印刷、 孔板印刷 (丝网或圆网)、 柔版印刷 等印刷领域。 本发明的印刷工艺的关键在于在印刷站压印工序前使用了一种关键的印刷助剂。 该印刷 助剂能够极大提高印墨的转移率。 所述印墨可为各种常规印墨, 印墨为溶剂油墨、 水性油墨、 UV油墨及其它液体油墨的通 称, 可以是有色或无色的。 所述的印刷助剂需满足以下特性: 1, 能润湿承印物的表面 (层)。
2, 具有适当的挥发性, 可以配合承印物在正式印刷时其干燥状况适中, 从而保证印刷改性效 果。
3, 具有适当的表面张力, 能有效地承载印墨并及时地将墨传输到承印物的凹陷处, 从而实现 改善印刷质量的目的。 本发明提供了一种满足上述特性的印刷助剂, 该印刷助剂含有常温常压下呈液态的有机 物和水中的一种或多种。 所述印刷助剂可以为溶液、 悬浮液或乳液。 所述印刷助剂含有水和 /或常温常压下呈液态的有机物是指印刷助剂含有水或常温常压下 呈液态的有机物,或者印刷助剂含有水和常温常压下呈液态的有机物。例如印刷助剂为水或者 单一的常温常压下呈液态的有机物,或者为多种常温常压下呈液态的有机物, 当然也可以同时 含有水和一种或多种常温常压下呈液态的有机物。 水和 /或常温常压下呈液态的有机物可以任 意比例混合。
所述水和常温常压下呈液态的有机物在印刷助剂中的重量百分比之和为 50-100%, 优选 70-100%, 更佳为 80-100%。 较佳的, 所述印刷助剂为均相液体。 所述常温常压下呈液态的有机物为常温常压下呈液态的有机溶剂。 常温常压下呈液态的 有机溶剂选自: 常温常压下呈液态的芳香烃、 脂肪烃、 脂环烃、 卤化物、 醇、 醚、 酯、 酮、 酚、 二醇衍生物中的一种或多种。例如: 所述的常温常压下呈液态的有机溶剂可选自: 甲醇、 乙醇、 异丙醇、 乙二醇、 丙二醇、 二乙二醇、 二丙二醇、 二丙二醇甲醚、 二丙二醇乙醚、 二 丙二醇丙醚、 二丙二醇丁醚、 二乙二醇甲醚、 二乙二醇乙醚、 二乙二醇丙醚、 二乙二醇丁醚, 以及苯、 甲苯、 二基苯、 丙酮、 丁酮、 环乙酮、 乙酸乙酯、 乙酸丙酯、 乙酸丁酯中的一种或 多种。 由于所列溶剂单独使用都能改善不平整承印物的印刷质量, 因此所选溶剂能相互混溶, 则都可以起到改善不平整承印物的印刷质量的作用。
进一步的, 所述印刷助剂中还可根据需要加入树脂、 助溶剂、 表面活性剂、 消泡剂、 遮 蔽剂和流变剂中的一种或多种。 所述印刷助剂中可以含有或不含有印墨用树脂。 优选的, 所述印刷助剂为水、 常温常压下呈液态的有机物中的一种、 常温常压下呈液态 的有机物中多种的均相混合液、 或者常温常压下呈液态的有机物中的一种或多种与水的均相 混合液。 含有水和 /或所述常温常压下呈液态的有机物的印刷助剂即可很好地改善各种非平整表 面承印物的印刷质量。 要获得最佳的印刷效果, 印刷助剂中各成份的比例并非一成不变, 可 根据承印物特性、 印刷机器的加热温度、 热风条件、 涂抹厚度、 印刷速度、 涂抹 -印刷机位的 间距等因素变化。 含有多种成分的印刷助剂可将所选原料按比例混合均匀即可制得。 本发明中所述的印刷助剂及印刷工艺可应用于各种承印物的印刷, 尤其适用于改善承印 物的印刷质量问题。 发明人惊奇地发现, 只要在预印时出现漏印、 漏涂的印刷站前或预计会 出现漏印、 漏涂的印刷站前, 增加单独施加具有一定流动性的印刷助剂的工序, 而无需对原 有印刷工序进行调整, 即可有效预防或改善漏印、 漏涂现象。 所述承印物为无纺材料承印物、 纺织材料承印物、 纸张承印物、 塑料承印物、 橡胶承印 物或陶瓷承印物, 如牛皮纸、 新闻纸、 印书纸、 道林纸、 装饰纸、 铜版纸、 包装纸、 招贴纸、 毛边纸、 钞券纸、 纤维织物、 无纺织物、 建筑板材、 地砖和墙砖。 所述印刷助剂可改善印墨在承印物上的转移, 从而改善承印物的印刷质量问题。 所述改善承印物的印刷质量问题是指改善承印物印刷时由于表面不平整造成的出现漏印 或漏涂的质量问题。 所述印刷助剂可应用于各种承印物印刷中的任选的印刷站压印点之前。 所述印刷助剂的使用方法为: 在所选的任一印刷站压印点之前, 将印刷助剂单独施加到 到承印物上, 施加方法可选自印刷、 涂布、 喷淋或浸渍。 较佳的, 选择在原有的印刷工艺产生漏印或漏涂的印刷站的压印点之前, 增加在待压印 承印物 (等待所选印刷站压印的承印物) 上单独施加一种印刷助剂的工序。 在承印物上施加一种印刷助剂后,应尽可能保持其湿润状态,在所述印刷助剂没有被完全 干燥的情况下进行所选印刷站的压印。
在承印物上单独施加一种印刷助剂后,在印刷助剂中的水和常温常压下为液态的有机物的 总保有量为 0. 5-105g/平方米承印物的情况下对承印物进行压印。对不同材质的承印物, 其优 选的总保有量略有变化, 如对无纺材料承印物, 较佳的总保有量为 l_96g/平方米承印物; 对 纺织材料承印物, 较佳的总保有量为 5-105g/平方米承印物; 对纸张承印物, 较佳的总保有量 为 l_20g/平方米承印物; 对塑料承印物, 较佳的总保有量为 0. 5-15g/平方米承印物; 对橡胶 承印物,较佳的总保有量为 0. 5-20g/平方米承印物;对陶瓷承印物,较佳的总保有量为 5-50g/ 平方米承印物。对于总保有量的控制,本技术领域的技术人员可以通过印刷助剂涂抹量或者适 当干燥等方式来实现。
所述印刷助剂的施加只需采用印刷机已有或外加的印刷站或装置进行印刷, 或者采用手 工方法、 或印刷机已有或外加的装置进行涂布、 喷淋或浸渍。 所述承印物的印刷方法可选自凸版印刷、 凹版印刷、 柔版印刷或孔板印刷 (丝网和圆网 印刷) 等各种印刷方法。 本发明印刷工艺中, 印刷助剂的使用能极大改善承印物的适印性, 使印墨在承印物上的 转移得到极大的提高, 印刷助剂兼顾印刷色墨与承印物的物理化学特性, 只要根据所用印刷 墨和承印物的材质及特性, 选择合适的印刷助剂; 并根据印刷现场的温湿度、 加热干燥条件、 印刷速度等条件调整涂抹量即可得到不同承印物的最佳改性效果。
附图说明 图 1 : 实施例 2的印刷结果 25倍放大比对图 左图未施加印刷助剂, 右图施加印刷助剂 图 2: 实施例 3的印刷结果 25倍放大比对图 左图未施加印刷助剂, 右图施加印刷助剂 图 3: 实施例 4的印刷结果 25倍放大比对图 左图未施加印刷助剂, 右图施加印刷助剂
具体实施方法: 以下列举实例以进一步阐述本发明, 应理解, 实例并非用于限制本发明的保护范围。 实施例 1 : 印刷助剂的配制
按下列重量百分比配方制备印刷助剂。
配制方法: 将各原料按比例混合均匀即可。
Figure imgf000009_0001
油性树脂 11
(%) 消泡剂(%) 0. 5 0. 5 0. 5 流变剂(%) 0. 5 0. 5 0. 5 助溶剂(%) 0. 5 0. 5 0. 5 活性剂(%) 0. 5 0. 5 0. 5
实施例 2 以牛皮纸为承印物, 选用 WA-20色墨印刷, 用凹版机进行印刷, 印刷速度为 60m/min., 采用的印刷工艺为:
1, 放卷:
2, 印刷助剂的涂布印刷: 利用印刷机原有的第一个印刷站,将实施例 1中配方 1的印刷助剂印刷 5. 3g/平方米到承印 物上, 不进行烘干, 随即进入 3。
3, 第一色 (或底色) 印刷: 将色盘中的印墨通过印版转印到承印物上。 4, 后续工序按常规。 对比印刷工序: 除了第 2步外, 其余步骤均与上述印刷工序相同。 印刷结果如图 1所示。 以涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷 物的着色率仅为 42% (请参照对比照片, 相对着色力检测使用 X-Rite SP-62分光光度仪)。 结 果表明, 印刷助剂的使用, 可明显改善粗糙承印物印刷后表面白点及漏印的问题。
实施例 3 以铜版纸为承印物, 选用亚光 WA加 2%蓝色水性色墨, 用凹版机进行印刷, 印刷速度为 80m/min. , 除采用了实施例 1配方 3的印刷助剂 2. 5g/平方米外, 印刷工艺同实施例 2, 对比 印刷工序也同实施例 2。 印刷结果如图 2所示。 以涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印 刷物的着色率仅为 76% (请参照对比照片, 相对着色力检测使用 X-Rite SP-62分光光度仪)。 结果表明, 印刷助剂的使用, 可明显改善承印物印刷后表面白点及漏印的问题。
实施例 4 以新闻纸为承印物, 选用 WA-20加 2%蓝色水性色墨, 用凹版机进行印刷, 印刷速度为 50m/min. , 除采用了实施例 1配方 2的印刷助剂 3. lg/平方米外, 印刷工艺同实施例 2, 对比 印刷工序也同实施例 2。 印刷结果如图 3所示。 以涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印 刷物的着色率仅为 80% (请参照对比照片, 相对着色力检测使用 X-Rite SP-62分光光度仪)。 结果表明, 印刷助剂的使用, 可明显改善粗糙承印物印刷后表面白点及漏印的问题。
实施例 5 印书纸凹版印刷 采用 4色凹版印刷机, 在 90克印书纸上进行单色(蓝色) 印刷。 着色印刷前利用同一凹版 印刷机的第一机位, 安装 180目凹印辊, 以普通印刷方式印刷助剂 (100%的水) 6. 2g/平方 米, 不经烘干, 随后进入第二版用 180目凹版网纹辊全面印刷蓝色, 完成的印刷物呈全面、 均匀的蓝色, 肉眼检查无明显漏白。 而未使用第一版印刷助剂的印刷物上, 视觉检查有明显 漏白。 以涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 57% (相对着色力检测使用 X-Rite SP-62分光光度仪)。
实施例 6 无纺织物凹版印刷 采用 4色凹版印刷机, 在 147克无纺织物上进行单色 (褐色) 印刷。 着色印刷前利用同一 凹版印刷机的第一机位, 安装 100目凹印辊, 以普通印刷方式印刷助剂 (乙醇) 12g/平方米, 不烘干印刷助剂, 随后进入第二版用 150目凹版网纹辊全面印刷褐色, 完成的印刷物呈全面、 均匀的褐色, 肉眼检查无明显漏白。 而未使用第一版印刷助剂的印刷物上, 视觉检查有明显 漏白。 以涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 39% (相对着色力检测使用 X-Rite SP-62分光光度仪)。 采用同样的方法, 只是分别以甲醇、 异丙醇、 乙二醇、 丙二醇、 二乙二醇、 二丙二醇、 二 丙二醇甲醚、 二丙二醇乙醚、 二丙二醇丙醚、 二丙二醇丁醚、 二乙二醇甲醚、 二乙二醇乙醚、 二乙二醇丙醚、 二乙二醇丁醚作为印刷助剂替换乙醇, 获得的印刷结果以涂布印刷助剂后的 印刷物着色率为 100, 未使用印刷助剂的印刷物的着色率仅为 35-65%。
实施例 7 无纺织物的丝网印刷 采用丝网印刷机, 用 300目丝网在无纺织物上印刷深蓝色。 着色印刷前利用喷雾装置对无 纺布表面喷涂印刷助剂(实施例 1中的配方 6) 12g/平方米致承印物表面浸润, 不经烘干随后 进入正常的深蓝色全面印刷并立即用热风吹干, 完成的印刷物色泽鲜明, 肉眼观测无漏白。 而未使用印刷助剂的印刷物上, 可明显见到漏白现象。 设涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 54%。 (相对着色力检测使用 X-Rite SP-62分 光光度仪)。 采用同样的方法, 只是分别以水、 甲醇、 乙醇、 异丙醇、 乙二醇、 丙二醇、 二乙二醇、 二 丙二醇、 二丙二醇甲醚、 二丙二醇乙醚、 二丙二醇丙醚、 二丙二醇丁醚、 二乙二醇甲醚、 二 乙二醇乙醚、二乙二醇丙醚、二乙二醇丁醚为印刷助剂替换配方 6, 获得的印刷结果以涂布印 刷助剂后的印刷物着色率为 100, 未使用印刷助剂的印刷物的着色率仅为 41-67%。
实施例 8 牛皮纸的柔版印刷 采用三色单张柔版印刷机, 200目网纹辊在牛皮纸上进行黑色色块印刷。印刷前利用同一 柔版印刷机的第一版位, 对即将印刷部位, 以普通柔版印刷方式转印印刷助剂 (实施例 1配 方 4 ) 6. 7g/平方米, 不烘干印刷助剂, 随后在第二版套印黑色色块。 完成的色块清晰、 饱满, 完全没有漏白。设预涂印刷助剂后的印刷物着色率为 100,未使用印刷助剂的印刷物的着色率 仅为 51%。 (相对着色力检测使用 X-Rite SP-62分光光度仪)。 采用同样的方法, 只是分别以甲醇、 乙醇、 异丙醇、 乙二醇、 丙二醇、 二乙二醇、 二 丙二醇、 二丙二醇甲醚、 二丙二醇乙醚、 二丙二醇丙醚、 二丙二醇丁醚、 二乙二醇甲醚、 二 乙二醇乙醚、 二乙二醇丙醚、 二乙二醇丁醚作为印刷助剂替换, 获得的印刷结果以涂布印刷 助剂后的印刷物着色率为 100, 未使用印刷助剂的印刷物的着色率仅为 43-69%。
实施例 9 无纺织物的圆网印刷 采用六色凹版圆网组合印刷机, 用 150目圆网在无纺织物上印刷深红色。 着色印刷前利用 同一圆网印刷机的第一机位, 安装 80目凹印辊, 以抬起刮刀的方式涂布印刷助剂(实施例中 的配方 6 ) 30g/平方米, 不加温干燥, 随后进入第二印刷站用 150目圆网全面印刷红色并立即 用热风吹干, 完成的印刷物呈全面、 均匀的红色, 肉眼检查无明显漏白。 而未使用印刷助剂 的印刷物上, 可明显见到漏白现象。 设涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷 助剂的印刷物的着色率仅为 63%。 (相对着色力检测使用 X-Rite SP-62分光光度仪)。 采用同样的方法, 只是分别以水、 甲醇、 乙醇、 异丙醇、 乙二醇、 丙二醇、 二乙二醇、 二 丙二醇、 二丙二醇甲醚、 二丙二醇乙醚、 二丙二醇丙醚、 二丙二醇丁醚、 二乙二醇甲醚、 二 乙二醇乙醚、 二乙二醇丙醚、 二乙二醇丁醚作为印刷助剂替换, 获得的印刷结果以涂布印刷 助剂后的印刷物着色率为 100, 未使用印刷助剂的印刷物的着色率仅为 52-74%。
实施例 10
采用与实施例 9相同的方法, 只是将承印物替换为 120支棉布, 结果表明, 设涂布印刷助剂 后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 82%。 实施例 11 采用与实施例 3相同的方法, 只是将承印物替换为不平整的发泡 PVC涂层纸, 结果表明, 设 涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 65%。 实施例 12
采用与实施例 7相同的方法, 只是将承印物替换为地砖, 结果表明, 设涂布印刷助剂后的印 刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 78%。 实施例 13
采用与实施例 3相同的方法, 只是将印刷助剂换为实例 1中的配方 7。结果表明, 设涂布印刷 助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 93%。 实施例 14
采用与实施例 3相同的方法, 只是将印刷助剂换为实例 1中的配方 8。结果表明, 设涂布印刷 助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 86%。 实施例 15
采用与实施例 3相同的方法, 只是将印刷助剂换为实例 1中的配方 9。结果表明, 设涂布印刷 助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 79%。 实施例 16
采用与实施例 4相同的方法, 只是将印刷助剂换为实例 1中的配方 10 ( 3. 5g/平方米)。 结果 表明, 设涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 76%。
采用同样的方法, 只是分别以苯、 甲苯、 二基苯、 丙酮、 丁酮、 环乙酮、 乙酸乙酯、 乙酸丙 酯、 乙酸丁酯作印刷助剂后, 获得的印刷结果以涂布印刷助剂后的印刷物着色率为 100, 未使 用印刷助剂的印刷物的着色率为 73-88%。 实施例 17 采用与实施例 4相同的方法, 只是将印刷助剂换为实例 1中的配方 11 ( 3. 3 g/平方米)。 结果 表明, 设涂布印刷助剂后的印刷物着色率为 100%, 未使用印刷助剂的印刷物的着色率仅为 79%。 实施例 18
采用与实施例 4相同的方法, 只是将印刷助剂换为实例 1中的配方 12 ( 4g/平方米)。 结果表 明,设涂布印刷助剂后的印刷物着色率为 100%,未使用印刷助剂的印刷物的着色率仅为 83%。
根据本发明的揭示, 本技术领域的技术人员还可以按照印刷机速度、 加热条件和送、 排 气状况, 在本发明的印刷工艺的基础上, 进一步调整印刷助剂的配方, 以获得最佳的效果, 而这种调整亦属于本发明的保护范围。

Claims

权利 要 求 书
1. 一种印刷工艺, 包括装版、 上墨、 承印物的输送及压印, 其特征在于, 在任选的印刷站的 压印点之前, 在待压印的承印物上单独施加一种印刷助剂, 所述印刷助剂含有水和 /或常 温常压下呈液态的有机物。
2. 如权利要求 1所述印刷工艺, 其特征在于, 所述的在任选的印刷站压印点之前, 在待压印 的承印物上单独施加一种印刷助剂, 是指以下情况之中的任一:
在仅有一个印刷站的印刷工艺中, 在待压印的承印物到达该印刷站的压印点之前, 在待压 印的承印物的局部或全面积上, 单独施加一种印刷助剂; 或者, 在有多个印刷站的印刷工艺中, 选择一个或多个印刷站, 对所选的任一印刷站, 均 在未经该印刷站压印的承印物到达该印刷站的压印点之前,在未经该印刷站压印的承印物 的局部或全面积上, 单独施加一种印刷助剂。
3. 如权利要求 2所述印刷工艺, 其特征在于, 选择在容易产生漏印或漏涂的印刷站的压印点 之前, 在待压印的承印物上单独施加一种印刷助剂。
4. 如权利要求 1所述印刷工艺, 其特征在于, 在待压印的承印物上单独施加一种印刷助剂的 方法选自印刷、 涂布、 喷淋或浸渍。
5. 如权利要求 1-4所述任一印刷工艺, 其特征在于, 在待压印的承印物上单独施加一种印刷 助剂后, 在印刷助剂中的水和常温常压下为液态的有机物的总保有量为 0. 5-105g/平方米 承印物的情况下对承印物进行压印。
6. 如权利要求 5所述任一印刷工艺, 其特征在于, 对无纺材料承印物, 所述水和常温常压下 为液态的有机物的总保有量为 l_96g/平方米承印物;对纺织材料承印物,所述水和常温常 压下为液态的有机物的总保有量为 5-105g/平方米承印物; 对纸张承印物, 所述水和常温 常压下为液态的有机物的总保有量为 l_20g/平方米承印物;对塑料承印物,所述水和常温 常压下为液态的有机物的总保有量为 0. 5-15g/平方米承印物;对橡胶承印物,所述水和常 温常压下为液态的有机物的总保有量为 0. 5-20g/平方米承印物;对陶瓷承印物,所述水和 常温常压下为液态的有机物的总保有量为 5-50g/平方米承印物。
7. 如权利要求 1所述印刷工艺, 其特征在于, 所述承印物为无纺材料承印物、 纺织材料承印 物、 纸张承印物、 塑料承印物、 橡胶承印物或陶瓷承印物。
8. 如权利要求 7所述印刷工艺, 其特征在于, 所述承印物选自牛皮纸、 新闻纸、 印书纸、 道 林纸、 铜版纸、 包装纸、 招贴纸、 毛边纸、 钞券纸、 纤维织物、 无纺织物、 建筑板材、 装 饰纸、 地砖和墙砖。
9. 如权利要求 1-8所述任一印刷工艺, 其特征在于, 水和常温常压下呈液态的有机物在所述 印刷助剂中的质量百分比之和为 50-100%。
10. 如权利要求 9所述印刷工艺, 其特征在于, 水和所述常温常压下呈液态的有机物在所述印 刷助剂中的质量百分比之和为 70-100%。
11. 如权利要求 10所述印刷工艺, 其特征在于, 水和所述常温常压下呈液态的有机物在所述 印刷助剂中的质量百分比之和为 80-100%。
12. 如权利要求 1-11所述任一印刷工艺, 其特征在于, 所述印刷助剂为均相液体。
13. 如权利要求 12所述印刷工艺, 其特征在于, 所述印刷助剂为水、 常温常压下呈液态的有 机物中的一种、 常温常压下呈液态的有机物中多种的均相混合液、 或者常温常压下呈液态 的有机物中的一种或多种与水的均相混合液。
14. 如权利要求 1-13所述任一印刷工艺, 其特征在于, 所述常温常压下呈液态的有机溶剂选 自: 常温常压下呈液态的芳香烃、 脂肪烃、 脂环烃、 卤化物、 醇、 醚、 酯、 酮、 酚、 二醇衍生物中的一种或多种。
15. 如权利要求 14所述印刷工艺, 其特征在于, 所述的常温常压下呈液态的有机溶剂选自: 甲醇、 乙醇、 丙醇、 异丙醇、 乙二醇、 丙二醇、 二乙二醇、 二丙二醇、 二丙二醇甲醚、 二 丙二醇乙醚、 二丙二醇丙醚、 二丙二醇丁醚、 二乙二醇甲醚、 二乙二醇乙醚、 二乙二醇丙 醚、 二乙二醇丁醚、 苯、 甲苯、 二基苯、 丙酮、 丁酮、 环乙酮、 乙酸乙酯、 乙酸丙酯和乙 酸丁酯中的一种或多种。
16. 如权利要求 1-15所述任一印刷工艺, 其特征在于, 所述印刷助剂中不含印墨用树脂。
17. 如权利要求 1-16所述任一印刷工艺在凸版印刷、 凹版印刷、 孔板印刷或柔版印刷中的应 用。
18. —种印刷助剂的用途, 所述印刷助剂含有水和 /或常温常压下呈液态的有机物, 其特征在 于, 将所述印刷助剂用于承印物的印刷, 以改善承印物由于表面不平整造成的印刷质量问 题。
19. 如权利要求 18所述的印刷助剂的用途, 其特征在于, 所述承印物由于表面不平整造成的 印刷质量问题是指承印物印刷时出现漏印或漏涂的质量问题。
20. 如权利要求 19所述的印刷助剂的用途, 其特征在于, 所述印刷助剂用于承印物的印刷的 方法为: 在任选的印刷站的压印点之前, 在待压印的承印物上单独施加所述印刷助剂。
21. 如权利要求 20所述的印刷助剂的用途, 其特征在于, 所述印刷助剂用于承印物的印刷的 方法为: 选择在原有的印刷工艺产生漏印或漏涂的印刷站的压印点之前, 增加在待压印的 承印物上单独施加一种印刷助剂的工序。
22. 如权利要求 20或 21所述的印刷助剂的用途, 其特征在于, 在待压印的承印物上单独施加 所述印刷助剂的方法选自印刷、 涂布、 喷淋或浸渍。
23. 如权利要求 18-22所述任一印刷助剂的用途, 其特征在于, 在待压印的承印物上单独施加 一种印刷助剂后, 在印刷助剂中的水和常温常压下为液态的有机物的总保有量为 0. 5-105g/平方米承印物的情况下对承印物进行压印。
24. 如权利要求 18所述的印刷助剂的用途, 其特征在于, 对无纺材料承印物, 所述水和常温 常压下为液态的有机物的总保有量为 l_96g/平方米承印物;对纺织材料承印物,所述水和 常温常压下为液态的有机物的总保有量为 5-105g/平方米承印物; 对纸张承印物, 所述水 和常温常压下为液态的有机物的总保有量为 l_20g/平方米承印物;对塑料承印物,所述水 和常温常压下为液态的有机物的总保有量为 0. 5-15g/平方米承印物;对橡胶承印物,所述 水和常温常压下为液态的有机物的总保有量为 0. 5-20g/平方米承印物;对陶瓷承印物,所 述水和常温常压下为液态的有机物的总保有量为 5-50g/平方米承印物。
25. 如权利要求 18所述的印刷助剂的用途, 其特征在于, 所述承印物为无纺材料承印物、 纺 织材料承印物、 纸张承印物、 塑料承印物、 橡胶承印物或陶瓷承印物。
26. 如权利要求 25所述的印刷助剂的用途, 其特征在于, 所述承印物选自牛皮纸、 新闻纸、 印书纸、 道林纸、 铜版纸、 包装纸、 招贴纸、 毛边纸、 装饰纸、 钞券纸、 纤维织物、 无纺 织物、 建筑板材、 地砖和墙砖。
27. 如权利要求 18所述的印刷助剂的用途, 其特征在于, 将所述印刷助剂用于凸版印刷、 凹 版印刷、 孔板印刷或柔版印刷。
28. 如权利要求 18-27所述任一印刷助剂的用途, 其特征在于, 水和常温常压下呈液态的有机 物在所述印刷助剂中的质量百分比之和为 50-100%。
29. 如权利要求 28所述印刷助剂的用途, 其特征在于, 水和所述常温常压下呈液态的有机物 在所述印刷助剂中的质量百分比之和为 70-100%。
30. 如权利要求 29所述印刷助剂的用途, 其特征在于, 水和所述常温常压下呈液态的有机物 在所述印刷助剂中的质量百分比之和为 80-100%。
31. 如权利要求 18-30所述印刷助剂的用途, 其特征在于, 所述印刷助剂为均相液体。
32. 如权利要求 31所述印刷助剂的用途, 其特征在于, 所述印刷助剂为水、 常温常压下呈液 态的有机物中的一种、 常温常压下呈液态的有机物中多种的均相混合液、 或者常温常压下 呈液态的有机物中的一种或多种与水的均相混合液。
33. 如权利要求 18-32所述任一印刷助剂的用途, 其特征在于, 所述常温常压下呈液态的有机 溶剂选自: 常温常压下呈液态的芳香烃、 脂肪烃、 脂环烃、 卤化物、 醇、 醚、 酯、 酮、 酚、 二醇衍生物中的一种或多种。
34. 如权利要求 33所述任一印刷助剂的用途, 其特征在于, 所述的常温常压下呈液态的有机 溶剂选自: 甲醇、 乙醇、 异丙醇、 乙二醇、 丙二醇、 二乙二醇、 二丙二醇、 二丙二醇甲醚、 二丙二醇乙醚、 二丙二醇丙醚、 二丙二醇丁醚、 二乙二醇甲醚、 二乙二醇乙醚、 二乙二醇 丙醚、 二乙二醇丁醚、 苯、 甲苯、 二基苯、 丙酮、 丁酮、 环乙酮、 乙酸乙酯、 乙酸丙酯和 乙酸丁酯中的一种或多种。
35. 如权利要求 33或 34所述任一印刷工艺, 其特征在于, 所述印刷助剂中不含印墨用树脂。
PCT/CN2011/070191 2010-03-12 2011-01-12 一种印刷工艺及其所使用的印刷助剂 WO2011110059A1 (zh)

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