Alkali-washable aluminum foil etching intaglio printing UV ink

Abstract

The invention discloses an alkali-washable aluminum foil etching gravure printing UV ink. The gravure UV ink comprises the following components in parts by weight: 30-50 parts of a UV prepolymer, 20-30 parts of a UV monomer, 6-20 parts of an initiator, 10-30 parts of an inorganic filler, 1-5 parts of a pigment, 0.1-3 parts of a dispersant, 0.1-2 parts of a leveling agent, 0.1-2 parts of a defoaming agent and 0.1-2 parts of an adhesion aid. According to the gravure UV etching protection ink, the special UV prepolymer and the UV monomer are matched with the filler, so that the prepared gravure UV etching protection ink not only has excellent aluminum foil adhesive force, but also has excellent corrosion resistance of hot hydrochloric acid, particularly provides effective protection for circuit edges, and meanwhile, the gravure UV etching protection ink can rapidly retreat a film in a sodium hydroxide aqueous solution with the concentration of 1% or above and the temperature of 40 DEG C, so that the service life of the gravure UV etching protection ink is prolonged. When the prepared gravure UV ink is used for gravure printing, diffusion of knife lines and printing lines cannot be generated, and possibility is brought to cost reduction and efficiency improvement of the industry.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of UV ink, in particular to a kind of alkali washable aluminum foil etching gravure printing UV ink. BACKGROUND

[0002] The rapid development of science and technology brings intelligent and convenient changes to people's life. In this process of change, people have an irreplaceable dependence on electronic products. As a result, the demand for electronic products is growing, and flexible lines are the basis of electronic products, so the development of flexible lines must meet the increasingly demanding requirements of people for the performance of electronic products.

[0003] Flexible lines generally use two processes, dry film method and wet film method. The dry film method involves pre-coating the adhesive film on the surface of the copper foil, and then performing processes such as masking, exposure, development, and film removal. The wet film method directly prints the etching protection ink onto the surface of the copper foil or aluminum foil using a silk screen process, and then performs processes such as hot air drying or UV lamp irradiation, etching, and film removal.

[0004] Hot air dried ink is limited in use due to the emission of large amounts of VOC during the drying process. UV-cured ink is widely used due to its advantages such as no VOC emission, rapid curing, and improved efficiency, especially in the RFID industry, which generally uses gravure printing. Due to the small molecular weight of the pre-polymer used in UV ink and the small intra-molecular cohesive force before curing, the adaptability of gravure printing is poor, and faults such as plate fog, knife lines, and pattern edge diffusion often occur during printing. SUMMARY

[0005] The present application aims to provide a kind of alkali washable aluminum foil etching gravure printing UV ink to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a kind of alkali washable aluminum foil etching gravure printing UV ink, characterized in that: the components of the gravure UV ink include UV pre-polymer 30-50 parts, UV monomer 20-30 parts, initiator 6-20 parts, inorganic filler 10-30 parts, pigment 1-5 parts, dispersant 0.1-3 parts, leveling agent 0.1-2 parts, defoaming agent 0.1-2 parts, adhesion aid 0.1-2 parts.

[0007] Preferably, the UV pre-polymer includes any one or a combination of 2, 3, or 4 polyurethane acrylate, 2, 3, or 4 polyester acrylate.

[0008] Preferably, the UV monomer includes any one or more of the combination of monofunctional monomers PHEA, CTFA, HEA, HEMA, THFA, bifunctional monomers HDDA, TPGDA, BPA4EODA, multifunctional monomers TMPTA, PETA, PPTTA, DPHA.

[0009] Preferably, the initiator includes any one or more of the combination of 1-hydroxy-cyclohexyl phenyl ketone (184), 2-hydroxy-2-methyl-1-phenyl-propan-1-one (1173), (2,4,6-trimethylbenzoyl) diphenylphosphine oxide (TPO), 2-isopropylthioxanthone (ITX), 2-methyl-1-(4-methylthiophenyl)-2-morpholin-1-propanone (907), tetraethyl Michler's ketone (EAB).

[0010] Preferably, the inorganic filler includes any one or more of the combination of precipitated barium sulfate, talc, wollastonite, mica, kaolin, diatomite.

[0011] Preferably, the pigment includes any one or more of the combination of phthalocyanine blue, titanium dioxide, naphthol red pigment, and other pigments.

[0012] Preferably, the dispersant includes any one or more of the combination of acrylate high molecular dispersant, polyurethane or polyester high molecular dispersant BYK163, BYK2013, BYK111, BYK168.

[0013] Preferably, the leveling agent includes any one or more of the combination of silicon-containing types such as commercially available BYK333, BYK322, and non-silicon types BYK361N, BYK350.

[0014] Preferably, the defoaming agent includes any one or more of the combination of silicon-containing types BYK077, BASF's 750SH, BYK088, and non-silicon types BYK1790, BYK055, DEGUSSA's 2700.

[0015] Preferably, the adhesion aid includes any one or more of the combination of silane coupling agent type, titanate coupling agent type, phosphate ester coupling agent type.

[0016] Beneficial effects:

[0017] The preparation of the aluminum foil etching protection gravure UV ink of the present application mixes UV prepolymer, dispersant and pigment, and then disperses and grinds by using a three-roll machine to obtain B-1 base material. The UV prepolymer, part of monomer, dispersant and filler are mixed, and then dispersed and grinded by using a three-roll machine to obtain B-2 base material. The initiator and monomer are mixed, and then stirred by using a dispersing machine until the initiator is completely dissolved to obtain B-3 base material. The above B-1, B-2, B-3, leveling agent, defoaming agent and adhesion promoter are mixed and uniformly dispersed by using a dispersing machine, and then filtered to obtain the aluminum foil etching protection gravure UV ink. The relationship between the filler and the plate mist and knife line, and the relationship between the filler and the pattern diffusion are studied to avoid the above printing process failures, improve the efficiency and reduce the cost.

[0018] The above description is only a summary of the technical solutions of the embodiments of the present application, in order to more clearly understand the technical means of the embodiments of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. DETAILED DESCRIPTION

[0019] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the specification of the application is only for the purpose of describing specific embodiments and is not intended to limit the application; the terms "include" and "have" and any variations thereof in the specification and claims of the application are intended to cover non-exclusive inclusion.

[0021] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are described clearly and completely.

[0022] Example 1

[0023] The weight of each component is shown in Table 1

[0024] a UV prepolymer, dispersant and pigment are mixed, and then dispersed and grinded by using a three-roll machine to obtain B-1 base material.

[0025] b UV prepolymer and part of monomer, dispersant, filler were mixed and then dispersed and grinded by three-roll mill to prepare B-2 base c initiator and monomer were mixed and stirred by disperser until the initiator was dissolved completely to prepare B-3 base.

[0026] d B-1, B-2, B-3, leveling agent, defoaming agent, adhesion promoter were mixed and dispersed by disperser until uniform, then filtered to prepare aluminum foil etching protection gravure UV ink.

[0027] Example 2

[0028] The weight of each component is shown in Table 1

[0029] The ink preparation method is the same as Example 1

[0030] The difference from Example 1 is that the filler is replaced by D50:1u talc powder

[0031] Example 3

[0032] The weight of each component is shown in Table 1

[0033] The ink preparation method is the same as Example 1

[0034] The difference from Example 1 is that the filler is replaced by D50:5u talc powder and PMMA powder is removed

[0035] Example 4

[0036] The weight of each component is shown in Table 1

[0037] The ink preparation method is the same as Example 1

[0038] The difference from Example 1 is that the filler is replaced by D50:10u talc powder

[0039] Example 5

[0040] The weight of each component is shown in Table 1

[0041] The ink preparation method is the same as Example 1

[0042] The difference from Example 1 is that the filler is replaced by D50:15u talc powder

[0043] Example 6

[0044] The weight of each component is shown in Table 1

[0045] The ink preparation method is the same as Example 1

[0046] The difference from Example 1 is that the filler is replaced by D50:10u:5 parts and D50:15u:10 parts talc powder

[0047] Example 7

[0048] The weights of the components are given in Table 1

[0049] The ink was prepared as in Example 1

[0050] The difference from Example 1 is that the filler is replaced by talc D50: 5u: 5 parts and D50: 15u: 10 parts

[0051] Example 8

[0052] The weights of the components are given in Table 1

[0053] The ink was prepared as in Example 1

[0054] The difference from Example 1 is that the filler is replaced by talc D50: 5u: 5 parts and D50: 15u: 10 parts

[0055] Example 9

[0056] The weights of the components are given in Table 1

[0057] The ink was prepared as in Example 1

[0058] The difference from Example 1 is that the filler is replaced by talc D50: 5u: 5 parts and D50: 15u: 13 parts, PMMA powder: 7 parts

[0059] Example 10

[0060] The weights of the components are given in Table 1

[0061] The ink was prepared as in Example 1

[0062] The difference from Example 1 is that the filler is replaced by talc D50: 5u: 2 parts, D50: 10u: 3 parts and D50: 15u:

[0063] 12 parts,

[0064] PMMA powder: 8 parts

[0065] Example 11

[0066] The weights of the components are given in Table 1

[0067] The ink was prepared as in Example 1

[0068] The difference from Example 1 is that the filler is replaced by talc D50: 0.42u: 2 parts, D50: 15u: 15 parts,

[0069] PMMA powder: 8 parts

[0070] Performance test

[0071]

[0072]

[0073] Table 1

[0074] The manufacturers and brands of the raw materials used in the embodiments of the present invention are as follows:

[0075]

[0076] Table 2

[0077] The performance test results of the embodiments show that the aluminum foil etching protection gravure ink printing prepared in Examples 10 and 11 has no knife lines, no ink leakage, no pinholes, and the pattern diffusion is minimal. In particular, the pattern diffusion of Example 11 is 0.05 mm, meeting the requirements of fine circuits.

[0078] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An alkali-washable aluminum foil etching gravure printing UV ink, characterized by: The gravure UV ink components include, by weight, 30-50 parts of UV prepolymer, 20-30 parts of UV monomer, 6-20 parts of initiator, 10-30 parts of inorganic filler, 1-5 parts of pigment, 0.1-3 parts of dispersant, 0.1-2 parts of leveling agent, 0.1-2 parts of defoaming agent, and 0.1-2 parts of adhesion promoter.

2. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The UV prepolymer includes any one or more combinations of difunctional, trifunctional, and tetrafunctional polyurethane acrylates, and difunctional, trifunctional, and tetrafunctional polyester acrylates.

3. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The UV monomers include any one or more combinations of monofunctional monomers PHEA, CTFA, HEA, HEMA, THFA, difunctional monomers HDDA, TPGDA, BPA4EODA, and polyfunctional monomers TMPTA, PETA, PPTTA, and DPHA.

4. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The initiator includes any one or more combinations of 1-hydroxy-cyclohexyl phenyl ketone (184), 2-hydroxy-2-methyl-1-phenyl-propan-1-one (1173), (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (TPO), 2-isopropylthioxanthone (ITX), 2-methyl-1-(4-methylthiophenyl)-2-morpholine-1-propanone (907), and tetraethyl Michler's ketone (EAB).

5. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The inorganic filler includes any one or more combinations of precipitated barium sulfate, talc, wollastonite, mica, kaolin, and diatomaceous earth.

6. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The pigment includes any one or more combinations of pigments such as phthalocyanine blue, titanium dioxide, naphthol red pigment, etc.

7. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The dispersant includes any one or more combinations of acrylate polymer dispersants, polyurethane or polyester polymer dispersants BYK163, BYK2013, BYK111, and BYK168.

8. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The leveling agent includes any one or more combinations of silicone-containing agents such as commercially available BYK333, BYK322 and non-silicone agents such as BYK361N and BYK350.

9. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The defoaming agent includes any one or more of silicone-containing BYK077, BASF's 750SH, BYK088 and non-silicone BYK1790, BYK055, Deqian's 2700.

10. The alkali-washable aluminum foil etching gravure printing UV ink according to claim 1, characterized in that: The adhesion promoter includes any one or more combinations of silane coupling agents, titanate coupling agents, and phosphate coupling agents.

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